Solubility, acid-base and complexation properties of calix[4]resorcinarene in aqueous solutions of nonionic surfactants

被引：9
|
作者：
Mustafina, AR
Amirov, RR
Elistratova, YG
Skripacheva, VV
Nugaeva, ZT
Kazakova, EK
机构：
[1] Russian Acad Sci, Kazan Sci Ctr, Arbuzov Inst Organ & Phys Chem, Kazan 420008, Russia
[2] Kazan VI Lenin State Univ, Kazan 420008, Russia
来源：
COLLOID JOURNAL | 2002年 / 64卷 / 06期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1023/A:1021554323367
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：
Solubility and acid-base properties of calix[4]resorcinarene (H8L) in aqueous solutions of nonionic surfactants Triton X-100, Triton X-405, and Brij-35, as well as isopropanol were studied by pH-potentiometry. The dependence of the amount of a nonionic surfactant necessary to dissolve H8L on the length of ethylene oxide chain was found. The dissociation constants of macrocycle for the first four steps are low sensitive to the medium nature (micellar or water-alcohol solutions). Complexation ability of the [H8-nL](n-) anions with respect to tetramethyl- and tetraethylammonium, N-methylpyridinium, and [Co(En)(2)(C2O4)(+) cations was studied by pH-potentiometry. A noticeable increase in the selectivity of guest-host binding was found on going from aqueous or water-alcohol to rnicellar solutions.
引用
收藏
页码：734 / 739
页数：6
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