Copper-containing dendromesogens:: the influence of the metal on the mesomorphism

被引:35
作者
Barberá, J [1 ]
Marcos, M [1 ]
Omenat, A [1 ]
Serrano, JL [1 ]
Martínez, JI [1 ]
Alonso, PJ [1 ]
机构
[1] Univ Zaragoza, CSIC, Fac Ciencias, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain
关键词
D O I
10.1080/026782900203065
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The synthesis and liquid crystalline behaviour of the first and second generations of a dendrimeric structure based on poly(propyleneimine) (DAB-dendr(NH2)(x)) are reported. 4-(4-n-Alkoxybenzoyloxy)salicylaldehydes are used as mesogenic moieties attached at the peripheral amino groups of the dendrimers giving rise to dendromesogens with four and eight mesogenic branches. From these dendromesogens, considered as organic ligands, were prepared sis metal-containing dendrimers which incorporate two or four copper atoms in their structures. All the dendrimeric ligands and three of the metal-containing dendrimers exhibit liquid crystalline properties which were studied by optical microscopy, DSC, X-ray diffraction and EPR spectroscopy.
引用
收藏
页码:255 / 262
页数:8
相关论文
共 27 条
[1]   PERSISTENCE OF SHORT-RANGE ORDER IN THE FLUID PHASES OF A MESOGEN COPPER COMPLEX STUDIED BY EPR [J].
ALONSO, PJ ;
MARCOS, M ;
MARTINEZ, JI ;
ORERA, VM ;
SANJUAN, ML ;
SERRANO, JL .
LIQUID CRYSTALS, 1993, 13 (04) :585-596
[2]  
Baars MWPL, 1998, CHEM-EUR J, V4, P2456, DOI 10.1002/(SICI)1521-3765(19981204)4:12<2456::AID-CHEM2456>3.0.CO
[3]  
2-L
[4]   FERROELECTRIC BEHAVIOR IN METAL-CONTAINING LIQUID-CRYSTALS - A STRUCTURE-ACTIVITY STUDY [J].
BAENA, MJ ;
BARBERA, J ;
ESPINET, P ;
EZCURRA, A ;
ROS, MB ;
SERRANO, JL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (05) :1899-1906
[5]   Rational design of the first spherical supramolecular dendrimers self-organized in a novel thermotropic cubic liquid-crystalline phase and the determination of their shape by X-ray analysis [J].
Balagurusamy, VSK ;
Ungar, G ;
Percec, V ;
Johansson, G .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (07) :1539-1555
[6]  
Barberá J, 1999, CHEM-EUR J, V5, P1834, DOI 10.1002/(SICI)1521-3765(19990604)5:6<1834::AID-CHEM1834>3.0.CO
[7]  
2-A
[8]   HIGHLY BRANCHED LIQUID-CRYSTALLINE POLYMERS WITH CHIRAL TERMINAL GROUPS [J].
BAUER, S ;
FISCHER, H ;
RINGSDORF, H .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1993, 32 (11) :1589-1592
[9]   Poly(propyleneimine) dendromesogens with hexagonal columnar mesophase [J].
Cameron, JH ;
Facher, A ;
Lattermann, G ;
Diele, S .
ADVANCED MATERIALS, 1997, 9 (05) :398-&
[10]   Ferrocene-containing liquid-crystalline dendrimers: a novel family of mesomorphic macromolecules [J].
Deschenaux, R ;
Serrano, E ;
Levelut, AM .
CHEMICAL COMMUNICATIONS, 1997, (16) :1577-1578