Bryan Kudisch

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!

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!

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

Thank you!

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 ...

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...

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)

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...

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!

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!

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.

The situation could not be tensor.

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

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

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 😊.

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 .

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...

Empty gallon of cold brew

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…

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

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

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

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

@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!

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!

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.

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.

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.

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

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!

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?

Molecular structure of Red No. 3

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...

Picture of a "We Work Inclusively" poster, an award letter from the ACS PRF, and an ACS monogrammed baking spatula and measuring spoon set

Got my #acsprf swag today! Really thankful again for the support of the @kudischlab.bsky.social's LMCT mechanistic project, but I'd be lying if I said I wasn't also super pumped to make my first batch of PRF-pastries (or maybe just pancakes) with these monogrammed bad boys!

#chemsky

a screen shot of a movie called black monday showing a man in a suit Alt: A guy in a suit saying "how about those optics"

Lesson for the spectroscopists on #chemsky, especially the ones with a certain brand of commercial transient absorption spectrometer: don't trust the depolarizers.

Set up magic angle the hard way every time, but be careful; magic angle isn't the same setting for different wavelengths!

Sage Journals: Discover world-class research Subscription and open access journals from Sage, the world's leading independent academic publisher.

Me to student: Have you decided on what paper you're doing your lit presentation on?

Student: Sends link: journals.sagepub.com/doi/abs/10.1...

Me: Maybe with ultrafast in it to get you some practice thinking about how others collect and analyze their data?

Student: Please don't click that link.

Dani. You're the lead author of the seminal review "The Photophysics of Photoredox Catalysis" AND you have a stuffed animal(?) named after the most well-known bidentate photoactive ligand in inorganic photochemistry.

You're lucky this starter pack isn't named after you!

it's a picture of the default alt-text for a gif of a cat with laser beams coming out of its eyes. The alt text reads "a fat black and white cat is standing on its hind legs in a hallway"

Dang the default alt-text on this gif is definitely burying the lede...

Also definitely the most "meta" alt-text that I've ever written for a picture?

#chemsky