Impact of surface free energy on two-dimensional crystallization

被引：7

作者：

Yao, Jiarong ^{[1
,2
]}

Sun, Lingjie ^{[1
,2
,3
]}

Xiao, Yanling ^{[4
]}

Liu, Jinyu ^{[5
]}

Jie, Jiansheng ^{[4
]}

Liu, Xuying ^{[6
]}

Yang, Fangxu ^{[1
,2
]}

Sun, Yajing ^{[1
,2
]}

Li, Rongjin ^{[1
,2
]}

Hu, Wenping ^{[1
,2
,3
]}

机构：

[1] Tianjin Univ, Tianjin Key Lab Mol Optoelect Sci, Dept Chem, Sch Sci, Tianjin 300072, Peoples R China

[2] Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China

[3] Joint Sch Natl Univ Singapore & Tianjin Univ, Int Campus Tianjin Univ, Fuzhou 350207, Peoples R China

[4] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab CarbonBased Funct Mat & Devices, Suzhou 215123, Peoples R China

[5] Chinese Acad Sci, Beijing Natl Lab Mol Sci, Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China

[6] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China

来源：

SCIENCE CHINA-MATERIALS | 2023年 / 66卷 / 04期

基金：

中国国家自然科学基金;

关键词：

surface free energy; 2D crystallization; 2D molecular crystals; organic field-effect transistor; THIN-FILM TRANSISTORS; CRYSTAL-GROWTH; MOBILITY; SOLVENT;

D O I：

10.1007/s40843-022-2261-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two-dimensional (2D) molecular crystals are emerging materials with fascinating optoelectronic properties. However, growing 2D organic single crystals is challenging because little is known about the factors that determine 2D crystallization. Herein, we investigated the relationship between 2D crystallization and the surface free energy of organic semiconductors. We proposed a term called surface free energy anisotropy factor (g) to measure the tendency of 2D crystallization. Taking two [1]benzothieno [3,2-b] [1] benzothiophene derivatives as examples, we identified that the one with a larger g factor showed a higher tendency for 2D crystallization, irrespective of the external factors. This work provides a guideline for the rational design of organic semiconductors toward 2D crystallization.

引用

页码：1511 / 1517

页数：7

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