Molecular symmetry breaking and chiral expression of discotic liquid crystals in two-dimensional systems

被引:30
作者
Li, CJ [1 ]
Zeng, QD [1 ]
Wu, P [1 ]
Xu, SL [1 ]
Wang, C [1 ]
Qiao, YH [1 ]
Wan, LJ [1 ]
Bai, CL [1 ]
机构
[1] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
关键词
D O I
10.1021/jp020376u
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have studied the self-assembled monolayers from a series of discotic liquid crystal molecules on graphite substrate using scanning tunneling microscopy. An emergence of chirality in 1,7,13-trialkanoyldecacyclene (with n-carbon side chains, n=14) monolayers was observed in the assembly. The driving force of the assembling behavior could be related to a cooperative interaction mechanism, possibly due to intermolecular steric hindrance, two-dimensional crystallization of alkyl substitutents.
引用
收藏
页码:13262 / 13267
页数:6
相关论文
共 29 条
[1]  
Böhringer M, 1999, ANGEW CHEM INT EDIT, V38, P821, DOI 10.1002/(SICI)1521-3773(19990315)38:6<821::AID-ANIE821>3.0.CO
[2]  
2-A
[3]  
Böhringer M, 2000, ANGEW CHEM INT EDIT, V39, P792, DOI 10.1002/(SICI)1521-3773(20000218)39:4<792::AID-ANIE792>3.0.CO
[4]  
2-2
[5]   Surface-induced chirality in a self-assembled monolayer of discotic liquid crystal [J].
Charra, F ;
Cousty, J .
PHYSICAL REVIEW LETTERS, 1998, 80 (08) :1682-1685
[6]  
De Feyter S, 1998, ANGEW CHEM INT EDIT, V37, P1223, DOI 10.1002/(SICI)1521-3773(19980518)37:9<1223::AID-ANIE1223>3.0.CO
[7]  
2-Z
[8]   Direct determination of the chirality of organic molecules by scanning tunneling microscopy [J].
Fang, HB ;
Giancarlo, LC ;
Flynn, GW .
JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (38) :7311-7315
[9]  
FEYTER SD, 2000, ACCOUNTS CHEM RES, V33, P520
[10]  
FEYTER SD, 2001, ANGEW CHEM INT EDIT, V40, P3217