Solid-State Photochromic Device Based on Nanocrystalline TiO2Functionalized with Electron Donor−Acceptor Species

2005 ◽  
Vol 44 (26) ◽  
pp. 9619-9621 ◽  
Author(s):  
Matteo Biancardo ◽  
Roberto Argazzi ◽  
Carlo A. Bignozzi
Keyword(s):  
Solid State ◽  
Electron Donor ◽  
Donor Acceptor

scholarly journals Colour effects with the Nitrobenzyll Esters of Dimethylaminobenzoic acids

1978 ◽  
Vol 31 (7) ◽  
pp. 1623
Author(s):  
FHC Stewart
Keyword(s):  
Solid State ◽  
Crystal Lattice ◽  
Electron Donor ◽  
Acceptor Interaction ◽  
Polymorphic Modifications ◽  
Donor Acceptor

Nitrobenzyl esters of dimethylaminobenzoic acids are strongly coloured in the solid state but not in solution. The operation of electron donor-acceptor interaction within the crystal lattice is indicated. One of the compounds, o-nitrobenzyl m-dimethylaminobenzoate, formed two differently coloured polymorphic modifications.

Anti-Solvatochromic and Highly Emissive Twisted D-A structure with Intramolecular Hydrogen Bond

2022 ◽  
Author(s):  
Hao Wang ◽  
Hong-Wen Liang ◽  
Tian Jia ◽  
Zhenzhen Wang ◽  
Jia-Qi Wang ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Solid State ◽  
Quantum Yield ◽  
Intramolecular Hydrogen Bond ◽  
Electron Donor ◽  
Fluorescent Dyes ◽  
High Quantum Yield ◽  
Common Strategy ◽  
Donor Acceptor ◽  
Intramolecular Hydrogen

Electron donor-acceptor (D-A) structure are the most common strategy to develop fluorescent dyes with high quantum yield in solution and the solid state. However, most of the D-A type fluorescent...

Metal-Free Photoinduced Hydroalkylation Cascade Enabled by an Electron-Donor-Acceptor Complex

2020 ◽  
Author(s):  
José Tiago Menezes Correia ◽  
Gustavo Piva da Silva ◽  
Camila Menezes Kisukuri ◽  
Elias André ◽  
Bruno Pires ◽  
...  
Keyword(s):  
Electron Donor ◽  
Functional Group ◽  
Photoexcited Electron ◽  
One Pot ◽  
Quaternary Centers ◽  
Metal Free ◽  
Acceptor Complex ◽  
Catalyst Free ◽  
Donor Acceptor ◽  
Radical Cascade

A metal- and catalyst-free photoinduced radical cascade hydroalkylation of 1,7-enynes has been disclosed. The process is triggered by a SET event involving a photoexcited electron-donor-aceptor complex between NHPI ester and Hantzsch ester, which decomposes to afford a tertiary radical that is readily trapped by the enyne. <a>The method provides an operationally simple, robust and step-economical approach to the construction of diversely functionalized dihydroquinolinones bearing quaternary-centers. A sequential one-pot hydroalkylation-isomerization approach is also allowed giving access to a family of quinolinones. A wide substrate scope and high functional group tolerance was observed in both approaches</a>.

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