Carbazole capped Schiff base and its boron difluoride complex as luminescent columnar phases with application as turn on chemosensor towards Al3+ as well as WLED

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2024-09-17 DOI:10.1016/j.dyepig.2024.112439

Zilong Guo , Shibo Chen , Yuantang Duan , Qiong Xiao , Qi Yan , Xiaohong Cheng

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Abstract

Three carbazole Schiff base derived hexacatenar liquid crystals (LCs) L/n (n = 12, 14, 16) composed of salicylaldimines as the central core with N-trialkoxylbenzyl carbazole capped at one side and trialkoxybenzoate capped at the other side have been synthesized. The BF₂ complex of L/12 was also successfully prepared. Both carbazole Schiff bases L/n and BF₂ complex L-BF₂/12 can self-assemble into luminescent Col_squ/p4mm LC phases with local helical structures in their bulk states. L/n can additionally self-assemble into luminescent organogels with winkled morphologies. Study on the photophysical property indicates that both L/12 and its BF₂ complex L-BF₂/12 show large Stokes shift with yellow greenish emission. L/12 shows AIEE effect and can be applied as turn on Al³⁺ chemical sensors. BF₂ complex L-BF₂/12 with stronger emission than L/12 has been used to generate a white light emission diode (WLED).

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咔唑封端希夫碱及其二氟化硼配合物作为发光柱状相，可用作 Al3+ 和 WLED 的开启化学传感器

我们合成了三种咔唑席夫碱衍生六碳烯纳液晶（LC）L/n（n = 12、14、16），它们以水杨醛亚胺为中心核，一侧封端为 N-三烷氧基苄基咔唑，另一侧封端为三烷氧基苯甲酸酯。L/12 的 BF2 复合物也已成功制备。咔唑席夫碱 L/n 和 BF2 复合物 L-BF2/12 都能自组装成发光的 Colsqu/p4mm LC 相，其主体状态具有局部螺旋结构。此外，L/n 还能自组装成具有褶皱形态的发光有机凝胶。对其光物理性质的研究表明，L/12 及其 BF2 复合物 L-BF2/12 均显示出较大的斯托克斯偏移，并发出黄绿色的光。L/12 显示出 AIEE 效应，可用作开启 Al3+ 化学传感器。与 L/12 相比，BF2 复合物 L-BF2/12 的发射更强，已被用于生成白光发射二极管（WLED）。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.