Results 111 to 120 of about 9,652 (250)

Designing a Triplet 2‐Formylphenylnitrene With Fast Tunneling Reactivity

Chemistry – A European Journal, EarlyView.
A 3‐CF3 substituent accelerates tunneling in triplet 2‐formylphenylnitrene, making its reactivity in cryogenic matrices too fast for conventional IR spectroscopic detection. Bringing this chemistry to low‐temperature solutions allows suppression of intrinsic nitrene dimerization through faster cyclization, which even outcompetes the 1,4‐H shift ...
Sofia Braz, Cláudio M. Nunes, Simon Schlosser, Peter R. Schreiner, Rui Fausto   +4 more
wiley   +1 more source

Azulene as an anomaly in triplet-state engineering <i>via</i> bromination and/or carbonylation: internal conversion overrides intersystem crossing. [PDF]

Chem Sci
Vinod K, Tonnelé C, Rana A, Amalnadh T, Swathi Krishna PE, Roldao JC, Ottosson H, Casanova D, Hariharan M.   +8 more
europepmc   +1 more source

High Fatigue‐Resistant Photoswitches Based on iridium(III)‐DTE Systems

Chemistry – A European Journal, EarlyView.
Coordination to iridium(III) enhances fatigue resistance over multiple photoswitching cycles in diarylethenes. This metal coordination modulates photoresponse relative to the free ligands under identical irradiation conditions, opening new avenues for practical applications.'' ABSTRACT A series of four differently substituted nonsymmetrical ...
Ariadna Pazos, F. Borja Urquiola, Nícolas Oliveira Decarli, Brice Kauffmann, Gediminas Jonusauskas, Nathan D. McClenaghan, Zoraida Freixa   +6 more
wiley   +1 more source

Lattice-Directed Spin-Vibronic Coherence-Mediated Ultrafast Intersystem Crossing in Crystalline Diplatinum Complex. [PDF]

J Am Chem Soc
Ghosh N, Eng J, Kromer S, Pope TJ, da Silva-Neto ML, Roy S, Pulleri Vadhyar S, Penfold TJ, Castellano FN, Miller RJD.   +9 more
europepmc   +1 more source

Boron Monofluoride Complexes Bearing π‐Expanded Coumarin Subunits: Facile Synthesis, Crystal Structure, and Solid‐State Enhanced Emission

Chemistry – A European Journal, EarlyView.
We here report the design, facile synthesis, experimental, and theoretical characterization of a novel class of monofluoroborate compounds featuring π‐expanded coumarin subunits displaying solid‐state enhanced Emission. The origin of this phenomenon is disclosed by combined theoretical and spectroscopic investigations.
Amine Assel, Fausto Puntoriero, Mohamed Chellegui, Antonio Santoro, Francesco Nicolò, Mayssa Zayene, Hichem Ben Jannet, Alessandro Auditore, Tianhong Yan, Alessandro Amadeo, Frédéric Labat, Ilaria Ciofini, Sebastiano Campagna   +12 more
wiley   +1 more source

Achieving 1.0-s Thermally Activated Delayed Fluorescence via Synergistic Control of Reverse Intersystem Crossing and Exciton Cycling. [PDF]

Angew Chem Int Ed Engl
Lei Y, Liu R, He Y, Luo G, Liu C, Su J, Li B, Long X, Tan Y, Luo Y, Qiu H, Huang Y, Lu Z.   +12 more
europepmc   +1 more source

A Green Protocol for the Deprotection of ortho‐Nitrobenzyl Esters and Ethers by UVA–LED Irradiation

Chemistry – A European Journal, EarlyView.
This study presents a green and efficient photochemical protocol for the deprotection of ortho‐nitrobenzyl esters or ethers under mild conditions, using UVA‐LED irradiation in methanol. The broad applicability of the protocol was validated in the synthesis of a cytosolic phospholipase A2 inhibitor. ABSTRACT The removal of protecting groups in synthetic
Despoina Poikilidou, Christiana Mantzourani, George Kokotos, Christoforos G. Kokotos   +3 more
wiley   +1 more source

A Qualitative Approach for Predicting Enhanced Intersystem Crossing in Chromophore-Radical Systems. [PDF]

J Phys Chem Lett
Patel YH, Weiss PS, Dergachev ID, Avalos CE.   +3 more
europepmc   +1 more source

Highly Polarized 1,4‐Dihydropyrrolo[3,2‐b]Pyrroles: From Synthesis to Photophysics and Two‐Photon Induced Polymerization

Chemistry – A European Journal, EarlyView.
Quadrupolar, centrosymmetric 1,4‐dihydropyrrolo[3,2‐b]pyrroles (DHPP) possessing two five‐membered rings and highly polarized architecture are not emissive, but they are good photosensitizers in two‐photon induced polymerization. ABSTRACT A series of ladder‐type, highly polarized functional dyes possessing 1,4‐dihydropyrrolo[3,2‐b]pyrrole (DHPP ...
Krzysztof J. Kochanowski, Yuri Tanuma, Rashid Valiev, Michalis Stavrou, David Gray, Maria Farsari, Glib Baryshnikov, Daniel T. Gryko   +7 more
wiley   +1 more source

Self-Adaptive Charge Transfer States in Aqueous Solutions Promote Fast Intersystem Crossing in a Photosensitizer for Tumor Inhibition. [PDF]

Adv Mater
Wang R, Xia X, Zhang Z, Qiu T, Tang W, Zhou D, Zeng X, Fan J, Peng X, Sun W.   +9 more
europepmc   +1 more source