Atanu Ghosh
@ghoshata96
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PhD student in McCusker_Group @MSUChem | @rkmvidyamandira @IITMadras @tifrscience alumni | ultrafast spectroscopy | metal complexes
East lansing, MI
Joined April 2021
Check out our paper @ScienceMagazine where we leverage Marcus Inverted ligand-field ES relaxation dynamics of Cobalt(III) complexes, as a photocatalyst design principle. A wonderful collaboration with @MacMillan_Lab @PrincetonChem @MSUChem
https://t.co/LHkXCx9Jbt 1/4
science.org
An unexpectedly long excited-state lifetime makes an Earth-abundant cobalt complex an effective photoredox catalyst.
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Super excited to see lots of failed experiments turn into such a cool story! Huge thanks to @BjornPfund for helping shape such an awesome discussion of spin-state and reorganization energy effects in photoredox catalysis. Check it out in @J_A_C_S: https://t.co/WGUtbGg9Ga 🥳🥳🥳
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Molecular Design Principles for Achieving High-Efficiency Light-Induced Charge Separation at the Nanometer Scale Mathis Brändlin and Felix Himmelreich in @JACS_Au
https://t.co/njqAzGjeqf Building on recent work in https://t.co/CwtRDeoRY3
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Thrilled to see this paper out in @J_A_C_S. Discovery of Fe(IV)-superoxo led to NO binding which models NO dioxygenase (NOD) activity. Big congrats to @PujaDe28221465 #Prabhakar
@sayams @PankajK15895500
@TIFRScience @iiserkol @IiserTirupati @icmm_csic
https://t.co/cmlXA2jQe3
pubs.acs.org
Nitric oxide (NO) is a vital biological signaling molecule, but its overproduction can be toxic, necessitating its rapid conversion to nitrate (NO3–) via NO dioxygenase (NOD) enzymes. These Fe-cont...
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Use intramolecular electron transfer to make long-lived states out of short-lived LMCTs First Reactions article in @ACSCentSci describing recent work from @LudoTroian, Felix Glaser and workers https://t.co/17tJBhMzZq
pubs.acs.org
Earth-abundant ligand-to-metal charge transfer (LMCT) chromophores in donor–acceptor dyads unlock an electron transfer pathway for efficient triplet state formation.
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Congratulations @KomalThawrani for the wonderful paper that got released in JMCA issue...our first in the journal, and on our 14th Lab anniversary @TIFRScience 😊😊😊🎉🎉 https://t.co/vWQ69D53Ss
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Photoactive Metal-to-Ligand Charge Transfer Excited States in 3d6 Complexes with Cr0, MnI, FeII, and CoIII | Journal of the American Chemical Society #JACSPerspective @UniBasel_en @WengerOliver #126citations
pubs.acs.org
Many coordination complexes and organometallic compounds with the 4d6 and 5d6 valence electron configurations have outstanding photophysical and photochemical properties, which stem from metal-to-l...
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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
https://t.co/CwtRDeoRY3
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A nice read for all early career scientists: https://t.co/m1bOA0s41a
science.org
“Every cleaned data set, debugged script, and refined figure deserves acknowledgment,” this researcher writes
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Congrats to Sarah for this thorough mechanistic study on a Cu(II)/Cu(I) photocycle, now available in ACS Catalysis: https://t.co/Tbw9lT0YV0
pubs.acs.org
As photoredox catalysis continues to yield promising chemical transformations, there is an increased need to understand how specific photocatalysts function to improve reaction efficiencies while...
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Check out our latest in @ChemRxiv ( https://t.co/3ThzJcHaV7), a great piece of collaborative work with the group of Teshik on chiral Lewis acid #photocatalysis. Great work from Riley and @HammerlingLea. @PhotoReAct1 @StAndrewsChem @StAndrewsOsc
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A Unified Picture of Radical Anion Photoredox Chemistry | Journal of the American Chemical Society @Harvard
pubs.acs.org
Radical anions are competent reagents for supporting photoredox transformations of exceptionally strong chemical bonds. However, the excited states of radical anions are extremely short-lived, making...
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Check out our recent paper @ChemicalScience where we use broadly accessible NMR methods to probe different types of ion-pairs in solution and its impact on ES dynamics of Co(III). Thanks to our excellent NMR specialist Dan Holmes for his inputs. @MSUChem
https://t.co/9LZX447gl7
pubs.rsc.org
Exploration of the photophysical and photochemical properties of transition metal complexes has driven ground-breaking advancements in solar energy conversion technologies, including photoredox...
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Finally Kishan's remarkable observation of proximity induced [4+2] light induced cycloaddition is out!!! Thank @vamseeker @RITAJTYAGI
@KishanKYadav95 @TIFRScience Confinement shape change does the trick!!!😊😊🎊 @CellReports
https://t.co/6cgGPbAzhT
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Rethinking Iron Photoredox Catalysis For Fe(III) complexes, excited-state redox potentials don’t follow the usual rules - standard estimation methods fall short @JoelWellauer with Paul Francis & colleagues at @Deakin in @J_A_C_S
https://t.co/fF0q3RkFJO
pubs.acs.org
The reduction potentials of electronically excited states are crucial input values for photoredox reaction design. Since they are not directly measurable, they are typically estimated from the...
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Unbelievable milestone for our group with a new publication in the prestigious @ACSCentSci ! Electron transfer, not energy transfer is controlling population of the final triplet state in a Fe(III)-PhAn dyad! @CadraLab @Gio_Ben_ @frsFNRS @WELRI_asbl
pubs.acs.org
An iron-anthracene dyad was recently used to populate a microsecond-lived nonluminescent (dark) triplet state, but with a surprisingly low triplet population yield. In-depth spectroscopic experiments...
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Our Account on exploring organic reactions in water using host-guest CT states in nanocages is out !!! We recount our photocatalytic scheme based on temporal ordering of chemical events after light absorption!!! @roy_957 @KishanKYadav95 @ACSPublications
https://t.co/fgMWEf9Hje
pubs.acs.org
ConspectusVisible-light-mediated photoredox catalysis, rejuvenated by David MacMillan in 2008 following the early work by Richard Kellogg and Shunichi Fukuzumi on photosensitized reactions, has been...
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Bite angle optimization weakens ligand fields in cobalt(III) complexes, yet lifetimes can increase due to rigidification pi-donor ligand properties are key New insights by @PolinaYaltseva in @J_A_C_S
https://t.co/AJRUjuV26U
pubs.acs.org
CoIII complexes have recently become an important focus in photophysics and photoredox catalysis due to metal-centered excited states with strong oxidizing properties. Optimizing chelate ligand bite...
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Happy to share our latest publication with @Irialized published in @J_A_C_S: Understanding Anomalous Cage-Escape Dynamics in Photoredox Processes Driven by a Fe(III) N-Heterocyclic Carbene Complex | Journal of the American Chemical Society
pubs.acs.org
Solvent cage-escape dynamics of bimolecular photoredox products in solution has been investigated computationally through a combination of molecular dynamics simulations and quantum chemical calcul...
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Cr(III) complexes with enhanced metal–ligand covalency enable tunable NIR luminescence and endergonic red-light photoreduction. @GiacomoMorsell2 and team find signs of doublet–doublet annihilation, or excited-state disproportionation. Now in @J_A_C_S: https://t.co/0ckIcD4Ppu
pubs.acs.org
Photoactive CrIII complexes are typically based on polypyridine coordination environments, exhibit red luminescence, and are good photo-oxidants but have modest photoreducing properties. We report...
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Thrilled to share our new JACS paper on anti-Kasha photoreactivity! We show that higher-lying excited states can drive electron transfer — opening new doors for photoredox catalysis. Huge thanks to @WengerOliver for the incredible mentorship! https://t.co/6ev230GD6v
pubs.acs.org
Nearly all photochemical transformations known to date follow Kasha’s rule, implying that reactions occur only from the lowest electronically excited state of a given spin multiplicity due to the...
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