Columnar liquid crystals based on Aza-BODIPY dye

化学工业与工程

Chemcial Industry and Engineering

2022, Vol. 39

Issue (6) :14-20 DOI: 10.13353/j.issn.1004.9533.20210333

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Columnar liquid crystals based on Aza-BODIPY dye

GUO Pingping¹, WANG Houchen^1,2, ZHANG Yongjie¹, PAN Hongfei¹, REN Xiangkui¹, CHEN Zhijian¹

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China;
2. College of Chemistry Chemical Engineering and Materials Science, Zaozhuang University, Shandong Zaozhuang 277160, China

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Abstract Aza-BODIPY dyes have been attracting tremendous attention in recent years due to their outstanding optical properties. The new Aza-BODIPY dye 1 with triazole amide hydrophobic alkyl chain was synthesized by "click" reaction. Its structure was characterized by ¹H NMR, ¹³C NMR and MS. Differential scanning calorimetry (DSC), optical polarizing microscope (POM) and small angle X-ray diffraction (SAXD) studies confirmed the liquid crystalline (LC) properties of Aza-BODIPY dye 1 in condensed state. The broken-fan texture was observed under the polarizing microscope. Meanwhile, phase transitions of solid to LC phase as well as LC phase to isotropic phase were observed in the DSC traces. Further XRD results indicated that Aza-BODIPY dye 1 formed a hexagonal columnar LC phase (Col_hd). To the best of our knowledge, this is the first time that the columnar LC phase was reported for this class of functional dyes.

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	GUO Pingping
	WANG Houchen
	ZHANG Yongjie
	PAN Hongfei
	REN Xiangkui
	CHEN Zhijian

Keywords： columnar liquid crystals boron-azadipyrromethene spectroscopic properties

Received 2021-04-03;

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GUO Pingping, WANG Houchen, ZHANG Yongjie, PAN Hongfei, REN Xiangkui, CHEN Zhijian.Columnar liquid crystals based on Aza-BODIPY dye[J] Chemcial Industry and Engineering, 2022,V39(6): 14-20

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