Synthesis and NLO properties of new trans 2-(thiophen-2-yl)vinyl heteroaromatic iodides
作者:Cosimo Gianluca Fortuna、Carmela Bonaccorso、Fadi Qamar、Anu Anu、Isabelle Ledoux、Giuseppe Musumarra
DOI:10.1039/c0ob00046a
日期:——
The synthesis and characterisation of new trans 2-(thiophen-2-yl)vinyl pyridinium, imidazolium and quinoilinium iodides is reported together with their solvatochromic shifts and EFISH characterization. 2-(E)-2-[5′-(dibutylamino)-2,2′-bithien-5-yl]vinyl}-1-methyl pyridinium and quinolinium iodides display high μ.βvec values up to 1200 × 10−48 esu. The promising non-linear optical (NLO) properties of this new family of chromophores, which can be further improved by the design of highly efficient systems exploiting the donor and acceptor properties of both heteroaromatic rings and substituents, make them suitable candidates for second harmonic generation imaging with interesting biological applications.
报告了新的反式 2-(噻吩-2-基)乙烯基吡啶鎓、咪唑鎓和喹啉鎓碘化物的合成和表征,以及它们的溶解色移和 EFISH 表征。2-(E)-2-[5′-(dibutylamino)-2,2′-bithien-5-yl]vinyl}-1-methyl 吡啶鎓和喹啉鎓碘化物显示出高达 1200 × 10-48 esu 的 μ.βvec 值。这一新的发色团家族具有良好的非线性光学(NLO)特性,可通过设计利用杂芳香环和取代基的供体和受体特性的高效系统来进一步改善这些特性。