Luminescent columnar liquid crystals based on 1,3,4-oxadiazole

被引：40
作者：
Girotto, Edivandro [1 ]
Eccher, Juliana [2 ]
Vieira, Andre A. [1 ]
Bechtold, Ivan H. [2 ]
Gallardo, Hugo [1 ]
机构：
[1] Univ Fed Santa Catarina, Dept Quim, BR-88040900 Florianopolis, SC, Brazil
[2] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC, Brazil
来源：
TETRAHEDRON | 2014年 / 70卷 / 20期
关键词：
Synthesis; 1,3,4-Oxadiazoles; Liquid crystals; Columnar mesomorphic; Luminescent; LIGHT-EMITTING-DIODES; ROOM-TEMPERATURE; OPTICAL-PROPERTIES; CHARGE-TRANSPORT; FLUORESCENCE; MESOGENS; BEHAVIOR; DERIVATIVES; MOLECULES; DIMERS;
D O I：
10.1016/j.tet.2013.09.079
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
In this study five new compounds, derivatives of 1,3,4-oxadiazole, were synthesized in order to achieve mesomorphic behavior and luminescence. Different types of aliphatic chains were used in order to investigate the influence of alkoxide groups in mesomorphic behavior. All of the compounds showed high thermal stability and strong blue photoluminescence in solution and in solid films. Furthermore, compounds 10a-d presented hexagonal columnar mesomorphism, which was characterized by polarizing optical microscopy and X-ray diffraction, and strong pi-stacking was observed. Notably, for two compounds (10c,d), the liquid crystal properties were preserved on cooling from the isotropic state to room temperature. These characteristics make these materials good candidates for application in organic electronics. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3355 / 3360
页数：6
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