Self-Assembly of Daisy Chain Oligomers from Heteroditopic Molecules Containing Secondary Ammonium Ion and Crown Ether Moieties
Self-Assembly of Daisy Chain Oligomers from Heteroditopic Molecules Containing Secondary Ammonium Ion and Crown Ether Moieties
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DOI：
10.1002/pola.23861
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发表时间：
2010-02-15
影响因子：
--
通讯作者：
Zakharov, Lev N.
中科院分区：
文献类型：
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作者：
Gibson, Harry W.;Yamaguchi, Nori;Zakharov, Lev N.
异位化合物2-（苄基氨甲基）二苯并-24-冠-8六氟磷酸盐（4）的MALDI-TOF MS显示低聚的“菊花链”物质直至六聚体。对于2-（6 '-羟基己基氨甲基）二苯并-24-冠-8六氟磷酸盐（8）获得了类似的结果。研究了两种取代的二苄基铵盐，2，2 ′-二甲基二苄基六氟磷酸铵（9a）和2，2 ′，5-三甲氧基二苄基六氟磷酸铵（9 b）与二苯并-24-冠-8的络合作用，作为滑移体系的模型;报告了这些体系的缔合常数。本文报道了新的二甲基苄基铵准轮烷的晶体结构。三甲氧基类似物显示能够滑移形成轮烷，尽管产率低。(C)2010 Wiley Periodicals，Inc. J Polym Sci Part A：Polym Chem 48：975-985，2010
MALDI-TOF MS of the heteroditopic compound 2-(benzylammoniomethyl)dibenzo-24-crown-8 hexafluorophosphate (4) revealed oligomeric "daisy chain" species up to the hexamer. Similar results were obtained for 2-(6'-hydroxyhexylammoniomethyl)dibenzo-24-crown-8 hexafluorophosphate (8). The complexations of two substituted dibenzylammonium salts, 2,2'-dimethyldibenzylammonium hexaflurophosphate (9a) and 2,2',5-trimethoxydibenzylammonium hexafluorophosphate (9b), with dibenzo-24-crown-8 were examined as models for slippage systems; association constants are reported for these systems. A crystal structure is reported for the new dimethylbenzylammonoium pseudorotaxane. The trimethoxy analog is shown to be capable of slippage formation of a rotaxane, albeit in low yield. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 975-985, 2010