Results 231 to 240 of about 292,062 (298)

Structurally Constrained Stibenium: Metallomimetic C−Si Bond Activation

Angewandte Chemie, EarlyView.
A structurally constrained stibenium cation supported by a 2,6‐bis(o‐carborano)pyridine pincer‐type ligand was prepared, and its preliminary reactivity toward silanes was investigated. Remarkably, Si−C bonds in silanes undergo activation via an oxidative‐addition‐type process at the cationic Sb center.
Donia Toami, Roman Dobrovetsky
wiley   +1 more source

Highly Efficient Mechanochromic Thermally Activated Delayed Fluorescence in the Deep Red to Near‐Infrared in Copper(I) [2.2]Isoindolinophanyl‐Carbene Carbazolates

Angewandte Chemie, EarlyView.
Electrophilic [2.2]isoindolinophanyl‐based carbene iPC has been employed as charge‐transfer acceptor ligand in a series of [Cu(iPC)(carbazolate)], which show mechanochromism and environment‐dependent luminescence due to intermolecular C─‐H‐π interactions.
André M. T. Muthig, Sabyasachi Maity, Andreas Prüfer, Justin Krieger, Andrei Belyaev, Jan‐Benedikt Weiß, Sebastian Henke, Benjamin Hupp, Björn Ewald, Jens Pflaum, Andreas Steffen   +10 more
wiley   +1 more source

The Curious Case of Dual Emission in 9,10-Bis(phenylethynyl)anthracene. [PDF]

J Am Chem Soc
Sowa JK, Sullivan CM, Otis L, Rousseau BJG, Isokuortti J, Shee J, Rossky PJ, Nienhaus L.   +7 more
europepmc   +1 more source

Light-Assisted Akamptisomerization: Excited-State Bond-Angle Reflection (ESBAR) as a Molecular Photoswitching Element in B₂OF₂-Porphyrins. [PDF]

Inorg Chem
de Andrade KN, de Souza JR, Homem-de-Mello P, Fiorot RG.   +3 more
europepmc   +1 more source

Controlling triplet-pair formation in acene-bridged trimers through locally excited-charge-transfer state mixing. [PDF]

Chem Sci
Sebastian E, Congrave DG, Royakkers J, Montanaro S, Huang H, Sharma A, Osmólska J, Zhu H, Phansa C, Winkel J, Millington O, Tayebjee MJY, Campos LM, Bronstein H, Rao A.   +14 more
europepmc   +1 more source

Aromaticity-Induced Spin State Switching and High-Spin States in Non-Alternant Polyradicals. [PDF]

J Comput Chem
Betkhoshvili S, de P R Moreira I, Poater J, Bofill JM.   +3 more
europepmc   +1 more source

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Triplet Pair States in Singlet Fission

Chemical Reviews, 2019
This account aims at providing an understanding of singlet fission, i.e., the photophysical process of a singlet state ( S1) splitting into two triplet states (2 × T1) in molecular chromophores. Since its discovery 50 years ago, the field of singlet fission has enjoyed rapid expansion in the past 8 years.
Kiyoshi Miyata, Felisa S. Conrad-Burton, Florian L. Geyer, X.-Y. Zhu   +3 more
openaire   +4 more sources

Carotenoid triplet state lifetimes

Journal of Photochemistry and Photobiology B: Biology, 2000
Carotene and xanthophyll triplet lifetimes are found to depend on the concentration of the parent molecule. These results account for some of the variations in carotenoid triplet lifetimes reported previously. The rate constants obtained for ground state quenching correlate with the number of conjugated double bonds, the longer chain systems having ...
M, Burke, E J, Land, D J, McGarvey, T G, Truscott   +3 more
openaire   +2 more sources

Triplet State of DNA

The Journal of Chemical Physics, 1967
Additional proof has been obtained for the fact that the triplet state in DNA and poly dAT resides at the thymine residue by comparing the intensities of the triplet ESR and phosphorescence signals from DNA's from various sources having different (A+T)/(G+C) ratios.
A A, Lamola, M, Guéron, T, Yamane, J, Eisinger, R G, Shulman   +4 more
openaire   +2 more sources

Triplet states in photosynthesis

Biochemical and Biophysical Research Communications, 1974
Abstract A comparison of zero field splitting (ZFS) and spin polarization of triplet spectra of bacteriochlorophyll a in vitro and in vivo provides support for the special pair model of photoreactive chlorophyll in photosynthetic bacteria.
R A, Uphaus, J R, Norris, J J, Katz
openaire   +2 more sources