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   https://doi.org/10.1021/acs.jpclett.4c01948  

   Mandal, Haraprasad; Giri, Sajal Kumar; Jovanovski, Sara; Varnavski, Oleg; Zagorska, Malgorzata; Ganczarczyk, Roman; Chiang, Tse-Min; Schatz, George C; Goodson, Theodore (September 2024, The Journal of Physical Chemistry Letters)

   Investigations of entangled and classical two-photon absorption have been carried out for six donor (D)-acceptor(A)-donor(D) compounds containing the dithieno pyrrole (DTP) unit as donor and acceptors with systematically varied electronic properties. Comparing ETPA (quantum) and TPA (classical) results reveals that the ETPA cross section decreases with increasing TPA cross section for molecules with highly off-resonant excited states for single photon excitation. Theory (TDDFT) results are in semiquantitative agreement with this anticorrelated behavior, due to the dependence of the ETPA cross section but not TPA on the two-photon excited state lifetime. The largest cross section is found for a DTP derivative that has a single photon excitation energy closest to resonance with half the two-photon excitation energy. These results are important to the possible use of quantum light for low intensity energy conversion applications. 

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   https://doi.org/10.1021/acs.joc.9b01860  

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   https://doi.org/10.1039/d3sc00734k  

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   Substrates engineered to undergo a 1,4-C–H insertion to yield benzocyclobutenes resulted in a novel elimination reaction to yieldortho-quinone dimethide (o-QDM) products that undergo Diels–Alder or hetero-Diels–Alder cycloadditions. 

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5. NIR-II emissive donor–acceptor–donor fluorophores for dual fluorescence bioimaging and photothermal therapy applications

   https://doi.org/10.1039/D3TC04747D  

   Sparks, Nicholas E; Smith, Cameron; Stahl, Terrence; Amarasekara, Dhanush L; Hamadani, Christine; Lambert, Ethan; Tang, Sheng Wei; Kulkarni, Anuja; Derbigny, Blaine M; Dasanayake, Gaya S; et al (March 2024, Journal of Materials Chemistry C)

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