Phase behaviors of binary mixtures composed of electron-richand electron-poor triphenylene discotic liquid crystals

doi:10.1088/1674-1056/25/9/096402

中国物理B ›› 2016, Vol. 25 ›› Issue (9): 96402-096402.doi: 10.1088/1674-1056/25/9/096402

• SPECIAL TOPIC—Physical research in liquid crystal • 上一篇下一篇

Phase behaviors of binary mixtures composed of electron-richand electron-poor triphenylene discotic liquid crystals

Lingling An(安玲玲), Min Jing(景敏), Bo Xiao(肖波), Xiao-Yan Bai(白小燕), Qing-Dao Zeng(曾庆祷), Ke-Qing Zhao(赵可清)

1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China;
2. CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China

收稿日期:2016-05-30 出版日期:2016-09-05 发布日期:2016-09-05
通讯作者: Ke-Qing Zhao E-mail:kqzhao@sicnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51273133 and 51443004).

Phase behaviors of binary mixtures composed of electron-richand electron-poor triphenylene discotic liquid crystals

Lingling An(安玲玲)¹, Min Jing(景敏)¹, Bo Xiao(肖波)^1,2, Xiao-Yan Bai(白小燕)¹, Qing-Dao Zeng(曾庆祷)², Ke-Qing Zhao(赵可清)¹

1. College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China;
2. CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology (NCNST), Beijing 100190, China

Received:2016-05-30 Online:2016-09-05 Published:2016-09-05
Contact: Ke-Qing Zhao E-mail:kqzhao@sicnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51273133 and 51443004).

摘要/Abstract

摘要： Disk-like liquid crystals (DLCs) can self-assemble to ordered columnar mesophases and are intriguing one-dimensional organic semiconductors with high charge carrier mobility. To improve their applicable property of mesomorphic temperature ranges, we exploit the binary mixtures of electronic donor-acceptor DLC materials. The electron-rich 2,3,6,7,10,11-hexakis(alkoxy)triphenylenes (C4, C6, C8, C10, C12) and an electron-deficient tetrapentyl triphenylene-2,3,6,10-tetracarboxylate have been prepared and their binary mixtures have been investigated. The mesomorphism of the 1:1 (molar ratio) mixtures has been characterized by polarizing optical microscopy (POM), differential scanning calorimetry (DSC), and small angel x-ray scattering (SAXS). The self-assembled monolayer structure of a discogen on a solid-liquid interface has been imaged by the high resolution scanning tunneling microscopy (STM). The match of peripheral chain length has important influence on the mesomorphism of the binary mixtures.

关键词: binary mixtures, discotic liquid crystals, triphenylene, mesomorphism

Abstract: Disk-like liquid crystals (DLCs) can self-assemble to ordered columnar mesophases and are intriguing one-dimensional organic semiconductors with high charge carrier mobility. To improve their applicable property of mesomorphic temperature ranges, we exploit the binary mixtures of electronic donor-acceptor DLC materials. The electron-rich 2,3,6,7,10,11-hexakis(alkoxy)triphenylenes (C4, C6, C8, C10, C12) and an electron-deficient tetrapentyl triphenylene-2,3,6,10-tetracarboxylate have been prepared and their binary mixtures have been investigated. The mesomorphism of the 1:1 (molar ratio) mixtures has been characterized by polarizing optical microscopy (POM), differential scanning calorimetry (DSC), and small angel x-ray scattering (SAXS). The self-assembled monolayer structure of a discogen on a solid-liquid interface has been imaged by the high resolution scanning tunneling microscopy (STM). The match of peripheral chain length has important influence on the mesomorphism of the binary mixtures.

Key words: binary mixtures, discotic liquid crystals, triphenylene, mesomorphism

中图分类号: (Experimental studies of liquid crystal transitions)

64.70.mj

安玲玲, 景敏, 肖波, 白小燕, 曾庆祷, 赵可清. Phase behaviors of binary mixtures composed of electron-richand electron-poor triphenylene discotic liquid crystals[J]. 中国物理B, 2016, 25(9): 96402-096402.

Lingling An(安玲玲), Min Jing(景敏), Bo Xiao(肖波), Xiao-Yan Bai(白小燕), Qing-Dao Zeng(曾庆祷), Ke-Qing Zhao(赵可清). Phase behaviors of binary mixtures composed of electron-richand electron-poor triphenylene discotic liquid crystals[J]. Chin. Phys. B, 2016, 25(9): 96402-096402.

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Phase behaviors of binary mixtures composed of electron-richand electron-poor triphenylene discotic liquid crystals

Phase behaviors of binary mixtures composed of electron-richand electron-poor triphenylene discotic liquid crystals

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