No, not that Sam Shepard, sorry. Assistant Professor of Physical Chemistry at @AlleghenyCol Postdoc w/ @CastellanoGroup, PhD w/ Damrauer Lab @CUBoulder
Meadville, PA
Joined January 2009
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Sam Shepard retweeted
Read the truly fascinating science story behind the invention of 2D electronic spectroscopy in 1998 by Prof. David Jonas, then Assistant Prof @CUBoulder @JChemPhys
pubs.aip.org/aip/jcp/article…
Special to write this with @bardmital , a friend and former colleague in the Jonas group.
Photochemistry is a great tool for making strained heterocycles! Out now in ACS Organic Inorganic AU. I'm grateful to my colleagues at @haverfordedu for support and research collaboration and to @alleghenycol for helping make this work open access!
pubs.acs.org/doi/10.1021/acs…
Sam Shepard retweeted
🧪 Hear from co-presidents of the Chemii chemistry club, Lauren Schmader '26 and Sydni Junker '26, about how Allegheny faculty supported them every step of the way!
🌟 Connect with an Allegheny professor by scheduling a personalized visit experience at go.allegheny.edu/visit-alleg….
Incorporation of the CW pump to create a steady state population of the initial charge separated molecule is a great way to demonstrate the two-photon nature of this process. Beautiful work which brings us close to replicating the multiphoton nature of biological photosynthesis.
New molecular design absorbs 2 photons to store 2 positive and 2 negative charges
100 ns lifetime, 3 eV energy storage, and 37% quantum yield
A step toward multi-electron photochemistry
Mathis Brändlin and @BjornPfund in @NatureChemistry
nature.com/articles/s41557-0…
Some excellent undergraduate chemistry research presentations at the 2024 ISCC conference at @LincolnUofPA .
Special congratulations to @haverfordedu students Aliya, Kyra, Trinity, Hannah, and Sidney from the Shepard and Seebald Labs for winning presentation awards!
The lab is photo-flow ready! @haverfordedu
ALT A photograph of a flow reactor coil wrapped in blue LEDs
Sam Shepard retweeted
America is suffering from a lack of bureaucracy -- by which I don't mean rules and red tape, but a competent civil service capable of getting things built cheaply.
We need to bring back the bureaucrats!
noahpinion.blog/p/america-ne…
It was great celebrating the hard work of all of the chemistry majors at @haverfordedu this afternoon in our chemistry department senior poster session. Thanks also to the students over at @BrynMawrCollege who brought posters over to present.
Just now discovered that the regal portrait of Legendre from my textbooks is wrong and the mathematician that helped me turn internal energy into Gibbs free energy actually had the same expression I made throughout my statistical mechanics class. en.wikipedia.org/wiki/Adrien…
ALT 1820 watercolor caricature of the Legendre (via wikipedia)
Two days in, I love teaching with my tablet and the ability to share annotated slides after class. One exception: in class, I keep writing in "blank" areas, only to advance the animation and now my ink and text overlap. How are other educators avoiding this? Giving up animations? – at Ardmore, PA
Broke: searching the inorganic literature for good example figures for my slides for class
Woke: searching the backlog of @InorgC2vMemes to find a topical meme to start each class with
In about 15 minutes (3 PM EST) I'll be headed on stage with the Haverford Chorale. It's a fantastic group of students, staff, alumni, and, yes, even faculty and it's been such a pleasure to join the group this semester. Please tune in to the livestream!
Sam Shepard retweeted
Are meat substitutes really better for the climate than meat and dairy?
It was surprisingly hard to find a dataset that answered this question, so I started building one.
I show the results in my new Substack post.
Spoiler: yes, most are lower-carbon.
hannahritchie.substack.com/p…
Something a little different this week for #FluorescenceFriday : a homebuilt reactor for photochemistry in flow. Plus two of my students testing out their reaction on the system. Thanks to @haverfordedu for the support!
ALT A coil of tubing connected to a syringe pump with a lamp pointing at it.
ALT Two students standing next to a homemade flow reactor.
Running some cyclic voltammetry experiments with my students today, but I had to throw on the blacklight for my #FluorescenceFriday photo!
ALT A vial with three electrodes in it glows red under a blacklight.
Sam Shepard retweeted
One thing I know already.
If not for voters under 30 ... tonight WOULD have been a Red Wave.
CNN National House Exit Poll
R+ 13 65+
R+ 11 45-64
D +2 30-44
D +28 18-29
#GenZ did their job.