125655-50-7Relevant articles and documents
Synthesis, photophysics and nonlinear optical properties of stilbenoid pyrimidine-based dyes bearing methylenepyran donor groups
Achelle, Sylvain,Malval, Jean-Pierre,Aloise, Stephane,Barsella, Alberto,Spangenberg, Arnaud,Mager, Loic,Akdas-Kilig, Huriye,Fillaut, Jean-Luc,Caro, Bertrand,Robin-Le Guen, Francoise
, p. 2725 - 2736 (2013/09/12)
The nonlinear properties and the photophysical behavior of two π-conjugated chromophores that incorporate an electron-deficient pyrimidine core (A) and γ-methylenepyrans as terminal donor (D) groups have been thoroughly investigated. Both dipolar and quadrupolar branching strategies are explored and rationalized on the basis of the Frenkel exciton model. Even though a cooperative effect is clearly observed if the dimensionality is increased, the nonlinear optical (NLO) response of this series is moderate if one considers the nature of the D/A couple and the size of the chromophores (as measured by the number of π electrons). This effect was attributed to a disruption in the electronic conjugation within the dyes' scaffold for which the geometry deviates from planarity owing to a noticeable twisting of the pyranylidene end-groups. This latter structural parameter also has a strong influence on the excited-state dynamics, which leads to a very efficient fluorescence quenching. Copyright
Synthesis and characterization of novel para- and meta-phenylenevinylene derivatives: Fine tuning of the electronic and optical properties of conjugated materials
Pascal,Vanden Eynde,Van Haverbeke,Dubois,Michel,Rant,Zojer,Leising,Van Dorn,Gruhn,Cornil,Breì?das
, p. 6442 - 6450 (2007/10/03)
We report the synthesis of novel phenylenevinylene derivatives that allow for the introduction of meta versus para connections on the phenylene rings, as well as the incorporation of nitrogen atoms within the conjugated backbone and the attachment of elec
Topochemical Photopolymerization and Photo-Copolymerization of the Crystals of Unsymmetrically Substituted Diolefin Compounds Having Pyrimidine Ring
Hasegawa, Masaki,Endo, Yasuhiro,Aoyama, Masato,Saigo, Kazuhiko
, p. 1556 - 1560 (2007/10/02)
Several new diolefin compounds, methyl and ethyl 4-cinnamates (1a and 1b), and methyl, ethyl, and propyl α-cyano-4cinnamates (1c, 1d, and 1e) were synthesized, and their photoreactivity in the crystalline s