Structural characterization and physical properties of new tetrabenzopentaphene mesogens

被引：11
作者：
Romero, Carmen [1 ]
Pena, Diego [1 ]
Perez, Dolores [1 ]
Guitian, Enrique [1 ]
Termine, Roberto [2 ]
Golemme, Attilio [2 ]
Omenat, Ana [3 ]
Barbera, Joaquin [3 ]
Luis Serrano, Jose [3 ]
机构：
[1] Univ Santiago de Compostela, Dept Quim Organ, Fac Quim, Santiago De Compostela 15782, Spain
[2] Univ Calabria, Lab Licryl INFM CNR, Dipartimento Chim, Ctr Eccelenza CEMIF CAL,INSTM UdR Calabria, I-87036 Arcavacata Di Rende, Italy
[3] Univ Zaragoza, Dept Quim Organ, Inst Ciencia Mat Aragon, CSIC, E-50009 Zaragoza, Spain
来源：
JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 27期
关键词：
DISCOTIC LIQUID-CRYSTALS; FIELD-EFFECT TRANSISTORS; CHARGE-CARRIER MOBILITY; TRANSIENT PHOTOCONDUCTIVITY; EXTENDED TRIPHENYLENES; SPACE-CHARGE; EFFICIENCY; TRANSPORT; DERIVATIVES; MESOPHASES;
D O I：
10.1039/b901260e
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：
The synthesis, structural and mesomorphic properties of five tetrabenzopentaphene derivatives are presented. All the compounds exhibit columnar mesophases which have been characterized by optical microscopy, differential scanning calorimetry and X-ray diffraction. The thermogravimetric analysis of the ester derivatives reveals that they suffer a decomposition process to the anhydride derivative at temperatures above 200 degrees C. The influence of the length of the terminal alkyl chains on the mesomorphic behaviour of the compounds has been studied. The structural characterization of the compounds has been completed with the study of their aggregation in solution by means of NMR. The fluorescent properties of the compounds are reported as well as a preliminary study of the photoconductivity of one of them.
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页码：4725 / 4731
页数：7
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