54648-50-9Relevant articles and documents
Accelerated Discovery of α-Cyanodiarylethene Photoswitches
Hecht, Stefan,K?nig, Niklas F.,Mutruc, Dragos
supporting information, p. 9162 - 9168 (2021/07/01)
Cyanodiarylethene chromophores are able to undergo constitutional exchange via dynamic covalent chemistry (DCC). During this process, the central ethylene bridge of the molecular scaffold can be broken and thereby enables the assembly of a new combination of aryl moieties around the reformed ethylene bridge. The reversible CC double bond exchange has exemplarily been investigated using α-cyanostilbenes. Establishing a dynamic equilibrium reaction from α-cyanodiarylethene with arylacetonitriles under mild conditions has been the basis to access constitutional libraries of new photoswitches with potentially improved properties. When subject to irradiation with light of adequate wavelength, α-cyanodiarylethenes undergo Z/E isomerization followed by ring-closure. By screening the thus accessible dynamic chromophore libraries using a desired detection wavelength, we could identify specific dithienyl analogues that exhibit three-state photochromism. The combination of dynamic constitutional libraries of functional chromophores in combination with the light-guided screening and selection should lead to more rapid exploration of structural diversity dye chemistry.
Facile Preparation of α-Cyano-α,ω-Diaryloligovinylenes: A New Class of Color-Tunable Solid Emitters
An, Peng,Xu, Nian-Sheng,Zhang, Hao-Li,Cao, Xiao-Ping,Shi, Zi-Fa,Wen, Wei
, p. 1959 - 1966 (2015/09/07)
An efficient Knoevenagel condensation reaction was used to construct a series of α-cyano-α,ω-diaryloligovinylenes, which show prominent fluorescence emission in the solid state. On investigating the effect of conjugation length on fluorescent properties,
Synthesis, characterisation and photophysical properties of a,a-diaryl-acrylonitrile derivatives
Yue, Youfeng,Fang, Haiyan,Wang, Meijun,Wang, Zhiyuan,Yu, Mingxin
experimental part, p. 377 - 380 (2009/12/25)
a,b-Diarylacrylonitrile derivatives can be prepared by two different routes: (1) the intermolecular condensation of the same arylacetonitriles (2) the condensation of arylaldehydes and arylacetonitriles with a catalytic amount of NaOCH3 at room temperature. Several a,b-diarylacrylonitrile derivatives have been synthesised in this paper and characterised. The UV-vis absorption and photoluminescent (PL) spectra of the products were investigated.