Tuning Octopolar NLO Chromophores: Synthesis and Spectroscopic Characterization of Persubstituted 1,3,5-Tris(ethynylphenyl)benzenes
作者:Gunther Hennrich、Inge Asselberghs、Koen Clays、André Persoons
DOI:10.1021/jo049279i
日期:2004.7.1
The synthesis of a series of octopolar 1,3,5-tris(ethynylphenyl)benzenes via Sonogashira coupling is described, varying the substituents on both the central benzene core as well as the acetylenic periphery. In particular, systems bearing an electron-rich core and an electron-poor periphery are obtained that display advanced optical properties. The linear (by UV−vis and fluorescence spectroscopy) and
描述了通过Sonogashira偶联合成一系列八极的1,3,5-三(乙炔基苯基)苯,同时改变了中心苯核和炔属外围上的取代基。特别地,获得了具有先进的光学性质的带有富电子核和贫电子外围的体系。研究了线性(通过UV-vis和荧光光谱法)和二阶非线性光学性质,后者通过超瑞利散射(HRS)(Hendrickx,E .; Clays,K .; Persoons,A.Acc.Chem。 RES。1998年,31,675−683)。光学性质揭示了不同的核和外围取代的影响,并证实了微调的可能性。因为(单光子)荧光的存在下对所有化合物中,飞秒超瑞利散射已经被应用(Olbrechts,G。; Strobbe,R。;粘土,K。; Persoons,A.启科学。仪器厂。1998年,69,2233-2241)。对高调制频率(Wostyn,K .; Binnemans,K .; Clays,K.)在频域中进行反卷积的