Alkoxylated p-phenylenevinylene oligomers: Synthesis and spectroscopic and electrochemical properties
摘要:
Twenty-one n-alkoxy substituted phenylenevinylene oligomers were synthesized, varying in size, number and position of the OR groups. IR,MS and solubility data are presented. NMR measurements provided the molecular structure as well as information about conformations and molecular dynamics. UV and of cyclic voltammetric data give correlations of chemical structure (number and position of OR substituents) with separate HOMO and LUMO energies. (C) 1997 Elsevier Science Ltd.
dehydration polymerization of propargylicalcohols. Coppercatalysis allows for efficient in situ generation of [n]cumulenes (n = 3, 5) by a soft deprotonation/β-elimination pathway and subsequent polymerization via organocopper species. Alkyne polymers (Mn up to 36.2 kg/mol) were produced with high efficiency (up to 95% yield) and excellent functional group tolerance. One-pot synthesis of semiconducting head-to-head
在这里,我们报告了一种铜催化的炔丙醇形式脱水聚合。铜催化允许通过软去质子化/β-消除途径有效地原位生成 [ n ]cumulenes ( n = 3, 5),然后通过有机铜物种进行聚合。炔烃聚合物(Mn高达36.2 kg/mol)的生产效率高(产率高达 95%)和优异的官能团耐受性。通过聚合-异构化序列证明了半导体头对头聚苯乙炔的一锅法合成。
Tschierske, C.; Zaschke, H.; Kresse, H., Molecular Crystals and Liquid Crystals (1969-1991), 1990, vol. 191, p. 223 - 230
337. Amino-oxy-derivatives. Part V. Some O-ethers of 2-substituted 4,6-diamino-1,2-dihydro-1-hydroxy-1,3,5-triazines
作者:P. Mamalis、J. Green、D. J. Outred、M. J. Rix
DOI:10.1039/jr9650001829
日期:——
New Chiral Ether Derivatives of 2-Arylidene-<i>p</i>-Menthane-3-Ones as Components of Induced Ferroelectric Systems
作者:M. N. Pivnenko、V. V. Vashchenko、A. I. Krivoshey、L. A. Kutulya、J. W. Goodby
DOI:10.1080/10587250108025025
日期:2001.8
New 2-arylidene-p-menthane-3-ones containing the ether bridging group in the arylidene fragment have been synthesized and studied as chiral dopants in ferroelectric liquid crystal mixtures. The ferroelectric properties of these compositions were compared with those for compositions including chiral dopants that do not contain any bridging group. The influence of bridging group and terminal alkyl substituent length in the dopant molecule on the ferroelectric parameters of systems studied is discussed.