Discotic metallomesogens: Synthesis and properties of square planar metal bis(β-diketonate) complexes
作者:
SyboutN. Poelsma,
AlastairH. Servante,
FrancescoP. Fanizzi,
PeterM. Maitlis,
期刊:
Liquid Crystals
(Taylor Available online 1994)
卷期:
Volume 16,
issue 4
页码: 675-685
ISSN:0267-8292
年代: 1994
DOI:10.1080/02678299408036539
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Discotic β-diketonate liquid crystals containing palladium(II), and oxovanadium(IV), (V≡0), analogous to known copper complexes (which display discotic lamellar and columnar mesophases), have been prepared and characterized. These are the first enantiotropic discotics containing Pd(II) and among the earliest examples containing VO(IV). The best-behaved Pd(II) complex is [Pd(DK 10, 10)2], and it also is probable that the complexes [Pd(DKn,n)2] (n= 7–9) are mesomorphic, however their characterization is difficult due to decomposition in the isotropic phase. The mesophase of [Pd(DK 102,102)2], which appears below 100°C, is suggested to be an example of the rare Ndphase on the basis of optical microscopy. The complex [VO(DK8,8)2] is an enantiotropic discotic vanadyl complex; the monotropic behaviour of [VO(DK 10,10)2] was also confirmed. It is suggested that the discotic phase which occurs for [VO(DK 8,8)2] is more organized than that of [Cu(DK 8,8)2].
点击下载:
PDF (636KB)
返 回