作者:Takashi Murase、Makoto Fujita
DOI:10.1021/jo051268h
日期:2005.11.1
novel synthetic strategy and optical properties of highly fluorescent, triazine−amine conjugated oligomers are described herein. Under basic conditions, aromatic dinitrile compounds, NC−C6H4−X−C6H4−CN (X = NMe, O, CH2), underwent cyclic trimerization of the cyano groups at both ends to give a series of triazine-containing oligomers. The oligomers can be expressed as (2n + 1) mer, where n represents the
本文描述了高荧光三嗪-胺共轭低聚物的新颖合成策略和光学性质。在碱性条件下,芳族二腈化合物NC-C 6 H 4 -X-C 6 H 4 -CN(X = NMe,O,CH 2)的两端均进行氰基的循环三聚,得到一系列的三嗪含低聚物。低聚物可以表示为(2 n +1)mer,其中n表示低聚物中三嗪环的数目。与其他三聚体(X = CH 2)相比,胺共轭三聚体(X = NMe,n = 1)的最大吸收峰显着红移。,O)。在酸性介质中,胺共轭三聚体表现出由质子化引起的两步红移。胺共轭的(2 n +1)单体(X = NMe,n = 1-4)的最大吸收量不依赖于n ; 相反,肩峰出现在长波长区域时Ñ ≥2通过亚苯基涉及三嗪和NME基团的缀合交替低聚物在氯仿中显示出强荧光。特别地,所述五聚体是最有效的蓝色发光体(Φ ˚F = 0.82)。其他含三嗪的低聚物(X = CH 2,O)根本不显示荧光。因此,可以得出结论,