Tehshik Yoon @TehshikYoon Twitter profile | Pikagi

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Tehshik Yoon

@TehshikYoon

14,407

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762

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Professor of Chemistry, University of Wisconsin-Madison. Associate Editor, ACS Catalysis. Nerd-in-Chief of @uwyoongroup . 🇺🇸🇰🇷🇨🇦🏳️‍🌈 (he/him/his)

Madison, WI

https://t.co/LgCQ5daie7

Joined January 2010

Don't wanna be here? Send us removal request.

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@TehshikYoon

Tehshik Yoon

1 month

Another new paper this week: Jesse, @tahoefiala , @DrSwordsChem , and Yerin report the first asymmetric catalytic Paternò–Büchi reaction in @J_A_C_S today. A great collab with Kent Meyer in the Wright lab @UWMadisonChem was critical for this one to work.

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Enantioselective Paternò–Büchi Reactions: Strategic Application of a Triplet Rebound Mechanism for...

The Paternò–Büchi reaction is the [2 + 2] photocycloaddition of a carbonyl with an alkene to afford an oxetane. Enantioselective catalysis of this classical photoreaction, however, has proven to be a...

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@TehshikYoon

Tehshik Yoon

4 years

I had the best class this semester.

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@TehshikYoon

Tehshik Yoon

2 years

In my profile, I said that I could draw a straight line from my coping strategies as a gay child to my scientific career. In support of this claim, a Twitter thread: Many of the most important things I know about being a scientist I learned from being a musician. 🧵

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@TehshikYoon

Tehshik Yoon

4 years

Colleagues. There is a concerted effort to weaponize anti-Chinese sentiment for political gain. It impacts our Chinese students, postdocs, friends, and coworkers. Our silence is complicity. Speak out, act up.

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@TehshikYoon

Tehshik Yoon

3 years

Casually attempting to pocket the Nobel medal while ⁦ @dmac68 ⁩ is distracted…. 🤫

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@TehshikYoon

Tehshik Yoon

4 years

What is perplexing is that scientists continue to assert these opinions without evidence when a large body of data show the opposite: that diverse teams are more creative, more productive, and more innovative. Examples below.

@DrLCsquare

L.-C. Campeau Ph.D.

4 years

I am very disturbed and disappointed by Prof. Hudlickly's comments in this article in @angew_chem where he makes the case that “diversity of the workforce” has a ”negative impact” on the field of organic synthesis (see the ridiculous figure!)

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@TehshikYoon

Tehshik Yoon

5 years

Confession: it's pronounced Orc ID in my head.

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@TehshikYoon

Tehshik Yoon

4 years

Literally every time I post something pro-immigrant, some shit for brains troll asks "Well how do they treat immigrants in YOUR country?" This is my damn country. I'm an American citizen, you fetid turd biscuits.

@TehshikYoon

Tehshik Yoon

4 years

The J1/H1B visa ban is a symptom of the same racist white nationalism that we've all been outraged over for the last month. I invite you to remain outraged. This is a violation of what it means to be an American.

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@TehshikYoon

Tehshik Yoon

2 years

I'm really proud of the group's first paper of 2022: Cu(II) photochemistry enables a new decarboxylative coupling of acids with diverse nucleophilic partners. Thanks to @bagphos and Pfizer for a great collaboration!

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@TehshikYoon

Tehshik Yoon

2 years

The neatest thing about putting together this special issue on LGBTQ+ chemists for @cenmag is that we had -a lot more- highly visible out LGBTQ+ chemists we wanted to highlight than we had space to include. I don't think that would have been true even a decade ago.

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@TehshikYoon

Tehshik Yoon

4 years

The J1/H1B visa ban is a symptom of the same racist white nationalism that we've all been outraged over for the last month. I invite you to remain outraged. This is a violation of what it means to be an American.

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@TehshikYoon

Tehshik Yoon

2 years

The students who stayed after class to ask questions today all wanted to know about the Nobel Prize.

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@TehshikYoon

Tehshik Yoon

2 years

Our second paper of 2022, published on Twosday 2/22/2022, is about double stereodifferentiation in dual catalytic [2+2] photocycloadditions, with two great collaborators ( @Toste_Group and @christine_m_le )

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Cooperative Stereoinduction in Asymmetric Photocatalysis

Stereoinduction in complex organic reactions often involves the influence of multiple stereocontrol elements. The interaction among these can often result in the observation of significant cooperat...

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@TehshikYoon

Tehshik Yoon

2 years

Hey LGBTQ+ grad students and postdocs, are you feeling inspired by this year's announcement of the first TWO out LGBTQ+ science Nobelists EVER? Do I have an idea for you! (Abstracts due 10/17).

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@TehshikYoon

Tehshik Yoon

4 years

The @UWMadisonChem grad program will not require the GRE this year. Official announcement forthcoming.

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@TehshikYoon

Tehshik Yoon

4 years

This here Korean American is celebrating July 4 by putting kimchi on a hotdog. 🇰🇷🇺🇸🌭

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@TehshikYoon

Tehshik Yoon

2 years

Inspired and uplifted by the audience and speakers in the first @ACSorganic symposium highlighting LGBTQ+ organic chemists. We will definitely do this again.

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@TehshikYoon

Tehshik Yoon

4 years

I still have a mini panic attack every time I give a talk about being gay in front of a science audience. But I am really glad that my first industrial invitation to give the talk is at @Merck , which gave me my first research opportunity in college. 🏳️‍🌈

@Ruck_chem

Rebecca Ruck

4 years

Pre-science and LGBTQ presentations with @TehshikYoon & #MerckChemistry ! @cecibottecchia @danithechemist @johnlukenj #salmon

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@TehshikYoon

Tehshik Yoon

3 years

That's it. I just can't bring myself to ask my students to fill out course evals anymore. We have known for decades about the biases based on gender, gender performance, race, accent, etc. I just can't pretend I endorse these flawed instruments anymore.

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@TehshikYoon

Tehshik Yoon

4 years

Hey anyone else not feeling super productive today? Cool, cool.

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@TehshikYoon

Tehshik Yoon

7 years

Photochemist at work.

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@TehshikYoon

Tehshik Yoon

4 years

Even when you know it’s absolutely the right call, closing up shop really hurts. Goodbye, eerie blue glow. I’ll see you in a few months.

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@TehshikYoon

Tehshik Yoon

2 years

Congratulations @CarolynBertozzi ! Thank you for being a role model and inspiration to all of us along so many axes. Can’t wait to tell my class about the Nobel today!

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@TehshikYoon

Tehshik Yoon

2 years

Studying kinetics of photochemical reactions using LED-NMR with RPKA is so fast that you can get rate laws under different conditions and discover some surprising effects. For details, see Wes and Steven's latest:

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@TehshikYoon

Tehshik Yoon

3 years

So just to recap: this week one group alum was promoted to Director at Merck ( @danithechemist ), another published his second first-author paper in Science ( @trblum ), and their former PI (me!!!) is about to burst with pride.

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@TehshikYoon

Tehshik Yoon

9 months

Is there a case to give all of this year's Nobels to Kariko and Weissman? It's clearly Chemistry as well, probably Peace, and at that point I think Physics should just come along for the ride.

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@TehshikYoon

Tehshik Yoon

4 years

This is racist, counterproductive, and did I mention racist?

@Chemjobber

Chemjobber

4 years

"Senator Tom Cotton (R-AR) and Senator Marsha Blackburn (R-TN) today unveiled the SECURE CAMPUS Act, legislation that would prohibit Chinese nationals from receiving visas to the United States for graduate or post-graduate studies in STEM fields."

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@TehshikYoon

Tehshik Yoon

3 years

Can you die from too many meetings? Asking for a friend.

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@TehshikYoon

Tehshik Yoon

3 years

How have photochemists approached chiral catalyst design? Matt, Jesse, and Wes have thoughts in their new Chem Rev.

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@TehshikYoon

Tehshik Yoon

10 months

New paper! @GenzinkMatthew wasn't satisfied with showcasing his method with an enantio-, diastereo-, regio- and chemoselective synthesis of a cyclobutane natural product. So he made five.

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@TehshikYoon

Tehshik Yoon

3 years

Harry Potter and the

@Chemjobber

Chemjobber

3 years

"Half-time Assistant Professor of Chemistry" there's a new one

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@TehshikYoon

Tehshik Yoon

3 years

So good to be back in person for a student hosted seminar at Notre Dame!

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@TehshikYoon

Tehshik Yoon

1 year

Can I get an amen? w/ @drdre4000

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@TehshikYoon

Tehshik Yoon

3 years

Alright, let's just call it. First person to get a Bernie meme into a TOC wins. Go.

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@TehshikYoon

Tehshik Yoon

4 years

Applicants to the @UWMadisonChem PhD program: We are delighted to announce that we have secured application fee waivers for anyone who asks. Contact gradprogram @chem .wisc.edu if you would like one.

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@TehshikYoon

Tehshik Yoon

5 months

2024 @uwyoongroup trailer video, courtesy @CadeChem

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@TehshikYoon

Tehshik Yoon

4 years

A subtle interplay of steric and electronic effects.

@AlbertoPupo84

Alberto Pupo

4 years

Who are they? Wrong answers only.

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@TehshikYoon

Tehshik Yoon

4 years

I love explaining the chemistry Nobel to my class on ChemNobel day, but it's sometimes a rush to educate myself on the science in the couple hours between when I wake up and have to teach. But not this time -- I've had these slides ready to go for two years! Congratulations!!!

@NobelPrize

The Nobel Prize

4 years

BREAKING NEWS: The 2020 #NobelPrize in Chemistry has been awarded to Emmanuelle Charpentier and Jennifer A. Doudna “for the development of a method for genome editing.”

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@TehshikYoon

Tehshik Yoon

4 months

Now on the ChemRxiv: My lab has tried to develop an enantioselective catalytic Paternò–Büchi reaction for 15 years. Jesse, @tahoefiala , and @DrSwordsChem took a mechanistically inspired approach to the problem and finally cracked it!

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@TehshikYoon

Tehshik Yoon

2 years

(6) You will always be critiqued. Some people will critique you because they want you to grow. Others will critique you because they want you to shrink. It's importance to learn the difference.

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@TehshikYoon

Tehshik Yoon

2 years

Pleased to present a method for cross-ketonization of carboxylic acid feedstocks, a project conceived by Andrew Whyte (PhD with @MarkLautens , now at @Merck ) during a COVID lockdown brainstorm! Read the early view now @angew_chem

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@TehshikYoon

Tehshik Yoon

4 years

Got the photochemistry question wrong on my intro orgo exam key. And how's your semester going?

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@TehshikYoon

Tehshik Yoon

7 months

(1/2) Two new papers this week! First, @DrSwordsChem and Hanna from @baikkaist lead a comprehensive synthetic, spectroscopic, and computational study of a new asymmetric catalytic 6π photoelectrocyclization in @J_A_C_S :

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Highly Enantioselective 6π Photoelectrocyclizations Engineered by Hydrogen Bonding

Photochemical electrocyclization reactions are valued for both their ability to produce structurally complex molecules and their central role in elucidating fundamental mechanistic principles of...

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@TehshikYoon

Tehshik Yoon

3 years

Pleased to present Evan, Matt, and Bohyun's latest in @NatureComms : an asymmetric organocatalytic photoreaction where no individual reaction component absorbs light. How? Read the next chapter in our great collaboration with @baikkaist

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@TehshikYoon

Tehshik Yoon

2 years

There's a tweet I keep seeing reposted that claims that academics should disclose our privileges (gender, sexuality, nationality, socioeconomic background, etc) before announcing our accomplishments. I don't often do this, but let's unpack the claim.

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@TehshikYoon

Tehshik Yoon

3 years

I cannot overstate the existential relief one feels when @dasingleton concludes that you weren't -completely- wrong.

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Isotope Effects and the Mechanism of Photoredox-Promoted [2 + 2] Cycloadditions of Enones

13C kinetic isotope effects (KIEs) for the photoredox-promoted [2 + 2] cycloaddition of enones were determined in homocoupling and heterocoupling examples. The only significant KIEs were observed at...

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@TehshikYoon

Tehshik Yoon

4 years

One can (and should) criticize a serious mistake, but a good community citizen also models compassion and forgiveness. To collapse a scientist's whole career to one mistake is illogical and uncompassionate. I celebrate Erick's election to EIC and his mature response.

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@TehshikYoon

Tehshik Yoon

3 years

Applying to @UWMadisonChem for graduate school? We are delighted to announce a second year of fee waivers for anyone who wants one. Contact gradprogram @chem .wisc.edu and we will set you up!

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@TehshikYoon

Tehshik Yoon

4 years

When you get sick, Senator, I hope you have luck finding a hospital without Asian immigrant doctors and nurses. And enjoy taking that vaccine that no Asian immigrant scientists worked on.

@atrupar

Aaron Rupar

4 years

"If Chinese students want to come here and study Shakespeare & the Federalist Papers, that's what they need to learn from America. They don't need to learn quantum computing" -- Sen. Tom Cotton proposes restricting Chinese students from studying science & tech at US universities

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@TehshikYoon

Tehshik Yoon

4 years

I heartily approve of this new tradition my group is calling “ee donuts”.

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@TehshikYoon

Tehshik Yoon

4 years

Stuck at 60% ee.

@medburnbook

status annoyicus

4 years

give me a horror story from your specialty in five words or less

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@TehshikYoon

Tehshik Yoon

4 years

How do you edit your lecture videos without hating your own stupid voice? Asking for a friend.

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@TehshikYoon

Tehshik Yoon

6 years

I thought this retweet would be appropriate for #LGBTQSTEMDay . Sorry my hair is a mess.

@TehshikYoon

Tehshik Yoon

7 years

Photochemist at work.

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@TehshikYoon

Tehshik Yoon

4 years

We lost a titan of the field yesterday. Hans Reich was as deep a thinker as they come, a dedicated educator, and a selfless colleague. I deeply regret that we won't be able to gather to grieve his passing together.

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@TehshikYoon

Tehshik Yoon

4 years

Hey, that's me! #LGBTSTEM #proud

@MFQCPod

My Fave Queer Chemist

4 years

This week, we chatted with the incredible @TehshikYoon (he/him, currently UWisconsin-Madison), a true force in photochemistry & LGBTQ+ advocacy in chemistry We discuss mentoring the next gen of queer chemists, & coming 2 terms with ur queerness, & MORE! New episode tomorrow!!

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@TehshikYoon

Tehshik Yoon

1 year

New Paper! My favorite part of @grace_lutovsky and Sam's latest in @Chem_CP is Figure 6: first they identified an unexpected side product, then they realized what it told us about mechanism, and then they figured out how to leverage it to expand scope.

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@TehshikYoon

Tehshik Yoon

3 years

Man I love teaching in person. Man I hate that I'm teaching in person.

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@TehshikYoon

Tehshik Yoon

4 years

I never deleted the placeholder for Pacifichem on my calendar, and now I'm sad.

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@TehshikYoon

Tehshik Yoon

4 years

Fucking hell, Madison. You are better than this.

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@TehshikYoon

Tehshik Yoon

4 years

We were really sad to cancel the LGBTQ+ Student/Postdoc Symposium at ACS Philly. So let me take a second and thank some folks. (1/n)

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@TehshikYoon

Tehshik Yoon

4 years

Hey, guess who the previous occupant of my visiting professor’s office at Seoul National was? I’ll give you a hint:

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@TehshikYoon

Tehshik Yoon

2 years

@DirkTrauner

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@TehshikYoon

Tehshik Yoon

5 years

Dichlorofreedom gas. TMS diazofreedom gas. Freedom gas monooxygenase. The magic freedom gasyl effect. You know, I think we should stick with IUPAC on this one?

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@TehshikYoon

Tehshik Yoon

4 years

I was in the group 96-98, right after the letter was written. I've avoided replying publicly when it was reemerged previously because it's hard to defend the letter. It was a mistake. We mocked EMC for it behind his back because even 25 years ago it was ridiculous. (1)

@SchindlerLab

SchindlerLab

4 years

As there is the request for @CarreiraGroup members to weigh in, I will do so as a former PhD student starting in 2005. When joining, I was aware of the letter but quickly realized that the impression given did not reflect reality. (1)

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@TehshikYoon

Tehshik Yoon

4 years

“Your screen time was up 430% last week”

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@TehshikYoon

Tehshik Yoon

4 years

My favorite part of today's ruling is in Alito's dissent: “What the court has done today—interpreting discrimination because of ‘sex’ to encompass discrimination because of sexual orientation or gender identity—is virtually certain to have far-reaching consequences” DARN TOOTIN🏳️‍🌈

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@TehshikYoon

Tehshik Yoon

3 years

Hello, I'm Tehshik Yoon and I approve this pun.

@uwyoongroup

Yoon Group

3 years

yoon in corn 🦄

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@TehshikYoon

Tehshik Yoon

10 months

I have been trying to find words, and everything seems completely insufficient. All my love, @UNC . This should never have happened.

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@TehshikYoon

Tehshik Yoon

6 years

Spent Easter setting up my favorite biocatalytic reaction.

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@TehshikYoon

Tehshik Yoon

2 years

October is LGBTQ+ History Month, so it's a perfect time to submit your abstract for this @ACSPride_prof Symposium at the Indy ACS National Meeting. Deadline is Oct 17. Here's why (1/n):

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@TehshikYoon

Tehshik Yoon

4 years

Kudos to my Orgo II students who did pretty darn great on Exam 1 under the crappiest of circumstances. Proud of you.

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@TehshikYoon

Tehshik Yoon

1 year

I had the privilege of curating last year's special issue on LGBTQ Trailblazers in @cenmag . To quote from my essay: "It is difficult to determine whether LGBTQ+ people are being excluded [from STEM] because demographic data are hard to come by." (1/n)

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Out and proud: C&EN's 2022 Trailblazers

C&EN’s 2022 Trailblazers issue, curated by guest editor Tehshik P. Yoon, celebrates LGBTQ+ chemists

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@TehshikYoon

Tehshik Yoon

4 years

Undergrads! Two weeks until applications for the PhD program at @UWMadisonChem are due. Reminder: (1) No GREs required (2) Application fee waivers available this year to any who ask (email gradprogram @chem .wisc.edu) (3) No citizenship requirement for waivers 🦡⚗️🦡⚗️🦡⚗️🦡⚗️

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@TehshikYoon

Tehshik Yoon

3 years

I’m in.

@AndrewBarnas

Dr. Andrew Barnas

3 years

Universities could quadruple the vaccination rate by boosting everyone's organic chemistry grade by 10% in exchange for proof of vaccination.

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@TehshikYoon

Tehshik Yoon

3 years

Congratulations, to a pioneer of organic photoredox catalysis and the most instagram-famous chemprof of them all!

@uncchemistry

UNC-Chapel Hill Chemistry

3 years

Please join us in congratulating Professor David Nicewicz on being named an Arthur C. Cope Scholar! The award recognizes and encourages excellence in #organicchemistry . @NicewiczLab @AmerChemSociety @acs_ncls @unccollege #uncchemistry #faculty #award

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@TehshikYoon

Tehshik Yoon

2 years

(5) Nobody else's success is a threat to you.

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@TehshikYoon

Tehshik Yoon

3 years

Two Yoon lab papers accepted this week! First, a project on photosensitized synthesis of Bpin-cyclobutanes, started by @spenceroscholz many years ago that just kept growing and changing as different folks took it on.

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@TehshikYoon

Tehshik Yoon

4 years

I have run out of things to stress-eat.

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@TehshikYoon

Tehshik Yoon

5 years

Life goal: avoid getting read to filth by @dasingleton

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@TehshikYoon

Tehshik Yoon

3 years

We've been thinking a lot about photoredox oxidation reactions lately. Nic used the pandemic shutdown to write up some thoughts in this new @ChemSocRev tutorial review. Take a look!

Oxidase reactions in photoredox catalysis

The nature of the terminal oxidant in oxidation reactions is an important reaction variable that can profoundly impact the mechanism, efficiency, and practicality of a synthetic protocol. One might...

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@TehshikYoon

Tehshik Yoon

6 years

If someone successfully interfaces the new retrosynthesis AI with Marty Burke's synthesis machine, please name it Robort B. Woodward.

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@TehshikYoon

Tehshik Yoon

5 years

I’m spending two weeks in Korea and bravely resisting the urge to instagram literally everything I eat.

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@TehshikYoon

Tehshik Yoon

5 years

This is an absolutely gorgeous study. Among the many things I love about the paper is that there are at least two points where it would have been reasonable to pull the plug on the project. This sort of long-term, slow, thoughtful science is hard to do but incredibly important.

@JakeYeston

Jake Yeston

5 years

This week in @sciencemagazine we've got photoredox deracemization from @knowles_lab and Scott Miller's group:

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@TehshikYoon

Tehshik Yoon

2 years

Delighted to be recorded in @cenmag saying "Holy shit" for all posterity. On brand.

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@TehshikYoon

Tehshik Yoon

2 years

I wanted to talk a little about why I'm so excited about this symposium highlighting LGBTQ+ chemists doing top-notch organic chemistry research:

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@TehshikYoon

Tehshik Yoon

4 years

Yoon family Thanksgiving pro tip: turkey with kimchi.

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@TehshikYoon

Tehshik Yoon

4 years

Please allow me to introduce a new Badger Chemist to the world: BJ Lee is Yoon lab PhD #19 and is off to Austin for his postdoc with @thehullgroup1 !

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@TehshikYoon

Tehshik Yoon

6 years

Looking forward to my lectures at Hope and Calvin Colleges today and tomorrow. In the few minutes before I start my day, I'd like to address something.

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@TehshikYoon

Tehshik Yoon

3 years

Hello NSF fellowship applicants! This is my annual reminder that you almost certainly mean "precedent" and not "precedence".

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@TehshikYoon

Tehshik Yoon

4 years

Faculty @UWMadisonChem waiting their turn to present to the virtual recruiting session!

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@TehshikYoon

Tehshik Yoon

4 years

Y’all, give @AmerChemSociety a break. It’s the weekend, and they deserve a little breather before the epically crap week they are about to have. #ACSPhilly

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@TehshikYoon

Tehshik Yoon

4 years

It's unexpectedly moving to hear Academy Awards being accepted in Korean.

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@TehshikYoon

Tehshik Yoon

4 years

I'm observing #ShutDownSTEM because the first Pride was a riot, led largely by QPOC women against police brutality. Among the most prominent was Marsha P Johnson, a Black trans woman whose murder police refused to investigate. Enough is enough.

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@TehshikYoon

Tehshik Yoon

3 years

Take a day. Take a week! And then once your emotional brain has satisfied its innate needs, pick yourself up, move on to the next thing, and continue to kick ass.

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@TehshikYoon

Tehshik Yoon

3 years

Relevant to this article, I note without surprise that at least one pharma company that refused to hire F1-visa-holding Chinese chemists this past cycle has been tweeting support for its Asian and Asian American employees, like we weren't paying attention.

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@TehshikYoon

Tehshik Yoon

5 years

Summer REU student flashes up an 86% ee in subgroup like it’s no big thing. ⭐️⭐️⭐️⭐️⭐️

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@TehshikYoon

Tehshik Yoon

2 years

Folks, @johnlukenj and I like to invite you to a symposium featuring LGBTQ+ leaders in organic chemistry at the #ACSChicago meeting next week. Mark your calendars. (1/3)

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@TehshikYoon

Tehshik Yoon

5 years

Oh that's me. Would you like me to recite from memory some of the negative comments from my 2008 teaching evaluations?

@jenheemstra

Jen Heemstra

5 years

How often do we dwell on bad news for days or weeks, and then skip right past good news in a moment? Maybe we should teach ourselves to do the opposite.

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@TehshikYoon

Tehshik Yoon

2 years

As in-person ACS meetings are ramping back up, so too is the @ACSPride_prof Symposium for LGBTQ+ grad students and postdocs, back this Spring at the ACS National Meeting in Indianapolis. Abstracts due Oct 17!

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@TehshikYoon

Tehshik Yoon

3 years

A safe, happy, and prosperous New Year to those of you observing the holiday! 새해 복 많이 받으십시오!

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@TehshikYoon

Tehshik Yoon

4 years

TBH my group did spend a little time over lunch brainstorming over "injectable UV light."

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