Lightnews — Scholar-powered news

Bryan Kudisch @bkudisch.bsky.social · 22d

ACS Spring 2026 is just around the corner, and Qilei, Miguel, and I have the pleasure of organizing a joint symposium between PHYS, INOR, and ORGN on Mechanisms of Photoredox Catalysis. The abstract submission deadline is Sept. 29th, and we hope to see y'all there!

1 2

Bryan Kudisch @bkudisch.bsky.social · Jul 21

The abstract submission deadline for our symposium is TODAY! Submit your abstract at sermacs-swrm2025.abstractcentral.com/submission before it’s too late; I hope to see you all in sunny Orlando this October!

Bryan Kudisch @bkudisch.bsky.social · Apr 18

Mark your calendars: NSUNS is hosting its third "Ultrafast and Nonlinear Spectroscopy" symposium at the joint SERMACS/SWRM this October! Abstract submission opens Monday, April 21st. We hope to see you there!

1 1

Bryan Kudisch @bkudisch.bsky.social · Jun 12

Woo we’re big fans of iron LMCT photocatalysts, too!

Chemistry World @chemistryworld.com · Jun 12

By bubbling simple alkane gas through a liquid phase containing heterocycle substrates and an iron catalyst, and then irradiating, pharmaceutical heterocycles can be alkylated in a scalable way that could transform drug discovery. #ChemSky

Abundant alkanes become gaseous alkylating agent with flow chemistry

Photocatalytic process can carry out late-stage optimisation of drug candidates

www.chemistryworld.com

2

Bryan Kudisch @bkudisch.bsky.social · Jun 5

Thank you!

Bryan Kudisch @bkudisch.bsky.social · Jun 5

I’m excited to share my lab’s first research article! LMCT photocatalysts are interesting and poorly understood chromophores. We dive into their photophysics to see what limits their photoreactivity, finding an unusual and pervasive competing pathway to homolysis!

chemrxiv.org/engage/chemr...

Ultrafast nonradiative relaxation limits the efficiency of photoinduced bond homolysis in molecular LMCT photocatalysts

Ligand-to-metal charge transfer photocatalysts (LMCT PCs) are being increasingly implemented towards construction and functionalization of organic molecules. Leveraging photoinduced metal-ligand bond ...

chemrxiv.org

2 1 12

Bryan Kudisch @bkudisch.bsky.social · May 26

don’t worry everyone, #chemsky can be perfect so long as we all get along. first things first, I have a question, and then a quick comment

(chemsky needs more memes and less journals, you heard it here first)

Chemjobber @chemjobber.bsky.social · May 26

don’t worry everyone, #chemsky can be perfect so long as we all get along. first things first, we simply need to get Singleton over here

(really, we do)

Andre the Chemist @andrechemist.bsky.social · May 26

don’t worry everyone, #chemsky can be perfect so long as we all get along. first things first, we just need to agree on the pKa of water

10

Bryan Kudisch @bkudisch.bsky.social · May 14

In case anyone is interested for future reference, I was sent this google doc with a copy of the Q&A part of the NSF CAREER Webinar today. I think the webinar will be public but not sure about the in text Q&A. It was definitely a strange one...
#chemsky
docs.google.com/document/d/e...

NSF CAREER Webinar Chat

docs.google.com

1 10

Bryan Kudisch @bkudisch.bsky.social · Apr 22

Abstract submission for our SERMACS/SWERM 2025 symposium on Ultrafast and Nonlinear Spectroscopy is open! Paul, Sean and I have worked hard to get an exciting lineup of invited speakers on our list this year, and we're looking forward to choosing additional presenters from the abstracts!

Bryan Kudisch @bkudisch.bsky.social · Apr 18

Mark your calendars: NSUNS is hosting its third "Ultrafast and Nonlinear Spectroscopy" symposium at the joint SERMACS/SWRM this October! Abstract submission opens Monday, April 21st. We hope to see you there!

1

Bryan Kudisch @bkudisch.bsky.social · Apr 18

Mark your calendars: NSUNS is hosting its third "Ultrafast and Nonlinear Spectroscopy" symposium at the joint SERMACS/SWRM this October! Abstract submission opens Monday, April 21st. We hope to see you there!

2 4

Bryan Kudisch @bkudisch.bsky.social · Apr 18

Thankfully my group, my close contacts at FSU, and I were not harmed in the shooting at FSU today. A sincere thank you to everyone who checked in today; it really means a lot.

10

Bryan Kudisch @bkudisch.bsky.social · Mar 14

The situation could not be tensor.

1 1

Bryan Kudisch @bkudisch.bsky.social · Feb 23

Approx. 5 bullets on what I did this past week:

- electron transfer
- energy transfer
- intersystem crossing
- internal conversion
- photoluminescence

Chemjobber @chemjobber.bsky.social · Feb 22

Approx. 5 bullets on what I did this past week:

- singlet or triplet state
- C-H insertion
- cyclopropanation
- ylide formation
- Wolff rearrangement

C🎃lin @colin1.bsky.social · Feb 22

Approx. 5 bullets on what I did this past week:

-drank a whiskey drink
-drank a vodka drink
-drank a lager drink
-drank a cider drink
-sang a song that reminded of the good times
-sang a song that reminded of the best times

1 9

Bryan Kudisch @bkudisch.bsky.social · Feb 8

Parts of it already feel outdated since acceptance in the summer, but that just means the field is rapidly growing and developing! We're privileged to have the opportunity to crystallize our understanding of the field at this time, and I look forward to reassessing where we're at in a few years 😊.

2

Bryan Kudisch @bkudisch.bsky.social · Feb 8

We're ecstatic to have collaborated with our former colleagues at Princeton to write this review (a @kudischlab.bsky.social first!) on the ultrafast spectroscopy and dynamics of photoredox catalysis. I hope you'll enjoy this *light* reading in these dark times.
www.annualreviews.org/content/jour...

a cat is sitting under a lamp and looking at the camera .

ALT: a cat is sitting under a lamp and looking at the camera .

media.tenor.com

1 1 8

Bryan Kudisch @bkudisch.bsky.social · Feb 7

It’s hard to tell when @kudischlab.bsky.social is in its last day at the @nationalmaglab.bsky.social, but if you look closely there are signs…

1 4

Bryan Kudisch @bkudisch.bsky.social · Jan 31

Visiting weekend AND magnet time? Enough to make our heads *spin* 😎. We just finished building the setup around this 25 T magnet and are nearly ready for testing at field!

Hope those of you in town have time to meet with the Kudisch Lab as they bounce between campus and the Maglab! #chemsky

Picture of Kudisch Lab members surrounding a home built ultrafast spectroscopy setup that surrounds a 25 T resistive magnet.

3 1 8

Bryan Kudisch @bkudisch.bsky.social · Jan 21

Come on Tallahassee, get it together this isn’t like you

1

Bryan Kudisch @bkudisch.bsky.social · Jan 19

@racicotleanne.bsky.social got the correct answer on the initial post, and hopefully #chemsky enjoyed the cool structures and pretty colors as much as I enjoy the featured snacks!

a baby yoda is sitting at a table with a bowl of chicken nuggets

ALT: a baby yoda is sitting at a table with a bowl of chicken nuggets

media.tenor.com

1

Bryan Kudisch @bkudisch.bsky.social · Jan 19

Finally, we have our blue raspberry Jolly Rancher (my favorite flavor), which gets its characteristic blue from Blue #1, a triarylmethane dye! Interestingly enough, its the spectral position of that little band on the blue side that largely controls the color, varying from blue to violet and green!

Bryan Kudisch @bkudisch.bsky.social · Jan 19

Next up: what makes Hot Cheetos so red? Well it's Red #40, the other azo-dye featured in the challenge! The added electron donating groups on the phenylsulfonate group as compared to Yellow #6 redshifts its absorption spectrum to absorb the yellow part of the spectrum, too, making it red.

1

Bryan Kudisch @bkudisch.bsky.social · Jan 19

Alright first up we've got the dye responsible for the Pineapple Jarritos: It's the simpler azo-dye on the left, AKA Yellow #6! With an extinction coefficient on the order of 10,000 M-1 cm-1, you could get the deep yellow seen in this soda with < 1 mg of Yellow #6.

1

Bryan Kudisch @bkudisch.bsky.social · Jan 19

Wow that's super cool! Like the bilin-containing proteins then or do they isolate the chromophore? Either way seems like a strategy that I'm surprised isn't more common.

2

Bryan Kudisch @bkudisch.bsky.social · Jan 18

Went further down the rabbit hole following the Red #3 banning, and now a challenge to #Chemsky: can you match the molecular structure of the food dye to its implementation? Let's see the photochemists (or more realistically the food chemists) flex their absorption spectrum muscles! No cheating!

Three molecular structures of food dyes on the top, and three common highly colored foods on the bottom. Which molecules correspond to which food?

6 3 12

Bryan Kudisch @bkudisch.bsky.social · Jan 15

Right?? It's making me try to think about what other petroleum-derived products are typically consumed. Anything with an arene on it? Maybe aspirin is a good counterexample?

Bryan Kudisch @bkudisch.bsky.social · Jan 15

Had fun going down the rabbit hole of finding out that Red Dye No. 3 is this fluorescein-looking derivative; now I want to dissolve Hot Cheetos in acetone and see if it fluoresces red.

Also, lots of claims that it is synthesized from petroleum? Thoughts #chemsky?

www.nbcnews.com/health/healt...

3 6