Impact of Methoxy Substituents on Thermally Activated Delayed Fluorescence and Room-Temperature Phosphorescence in All-Organic Donor–Acceptor Systems
作者:Jonathan S. Ward、Roberto S. Nobuyasu、Mark A. Fox、Juan A. Aguilar、David Hall、Andrei S. Batsanov、Zhongjie Ren、Fernando B. Dias、Martin R. Bryce
DOI:10.1021/acs.joc.8b02848
日期:2019.4.5
used to characterize asymmetric methoxy-substituted derivative 3b, which is chiral at N because of an extremely high flipping barrier at the phenothiazine N atom. Based on hybrid-density functional theory computations, the methoxy substituents tune the relative stabilities of the axial conformers with respect to equatorial conformers of the phenothiazine units, depending on their substitution position
The interplay of thermally activated delayed fluorescence (TADF) and room temperature organic phosphorescence in sterically-constrained donor–acceptor charge-transfer molecules
作者:Jonathan S. Ward、Roberto S. Nobuyasu、Andrei S. Batsanov、Przemyslaw Data、Andrew P. Monkman、Fernando B. Dias、Martin R. Bryce
DOI:10.1039/c5cc09645f
日期:——
Molecular engineering of phenothiazine–dibenzothiophene-S,S-dioxide molecules is reported.
报道了苯并噻吩-二苯并噻吩-S,S-二氧化物分子的分子工程。
The interplay of conformation and photophysical properties in deep-blue fluorescent oligomers
作者:Haiying Li、Andrei S. Batsanov、Kathryn C. Moss、Helen L. Vaughan、Fernando B. Dias、Kiran T. Kamtekar、Martin R. Bryce、Andrew P. Monkman
DOI:10.1039/c0cc00211a
日期:——
We report the synthesis, X-ray crystal structures and photophysics of new donor-acceptor oligomers of fluorene (F) and dibenzothiophene-S,S-dioxide (S) with constrained dihedral angles in the backbone. The materials display bright deep-blue fluorescence and evidence is presented for a planarised intramolecular charge-transfer (PICT) state in the F-S systems.
Poly(ether sulfone)s using a rigid dibenzothiophene dioxide heterocycle
作者:Adam M. Kortan、Randall J. Cannizzaro、Maxwell J. Robb、Daniel M. Knauss
DOI:10.1002/pola.28197
日期:2016.10.1
Poly(aryl ether)s were prepared by nucleophilic aromatic substitution using conformationally restricted dichloro‐ and difluorodibenzothiophene dioxide heterocyclic monomers with bisphenol A or bisphenol AF. The heterocyclic monomers were prepared from the bis(4‐halophenyl) sulfones in two steps via lithiation followed by copper catalyzed intramolecular coupling and characterized by 1H, 13C, 19F NMR
Method for preparing sulfone or sulfoxide compound
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:US20030171589A1
公开(公告)日:2003-09-11
There is provided a method for preparing a sulfone or sulfoxide compound, characterized in that a sulfide compound is allowed to react with hydrogen peroxide in the presence of a metal oxide catalyst formed by the reaction of hydrogen peroxide with at least one metal or metal compound selected from tungsten metal; molybdenum metal; a tungsten compound comprising tungsten and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen; and a molybdenum compound comprising molybdenum and a Group IIIb, IVb, Vb, or VIb element exclusive of oxygen.