Probing Cavitand-Organosilane Hybrid Bilayers via Sum-Frequency Vibrational Spectroscopy

被引:2
|
作者
Aprile, A. [1 ]
Pagliusi, P. [1 ,2 ]
Ciuchi, F. [2 ]
De Santo, M. P. [1 ,2 ]
Pinalli, R. [3 ,4 ]
Dalcanale, E. [3 ,4 ]
机构
[1] Univ Calabria, Dipartimento Fis, CNR IPCF UOS Cosenza, Ponte Pietro Bucci 33B, I-87036 Arcavacata Rende Cosenza, Italy
[2] Univ Calabria, Licryl Lab, CNR IPCF UOS Cosenza, I-87036 Arcavacata Rende Cosenza, Italy
[3] Univ Parma, Dipartimento Chim, I-43100 Parma, Italy
[4] INSTM, I-43100 Parma, Italy
关键词
SURFACTANT MONOLAYERS; LANGMUIR MONOLAYERS; HEAD GROUP; CONFORMATION; RECOGNITION; INTERFACES; ORIENTATION; GENERATION; MEMBRANES; SENSORS;
D O I
10.1021/la503150z
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Quinoxaline cavitands (QxCav) are transferred by Langmuir-Schaefer method on self-assembled monolayers (SAMs) of octadecyltrichlorosilane (OTS) and N,N-dimethyl-N-octadecyl-3-aminopropyltrimethoxysilyl chloride (DMOAP) on fused silica substrates. The molecular architectures of both the hydrophobic SAMs templates and the hybrid cavitand-organosilanes bilayers at the solid-air interface are investigated and correlated by sum-frequency vibrational spectroscopy. The results show that QxCav are always in the closed vase configuration and orient with their principal axis normal to the substrates. The role of the alkyl chains density in the SAM templates on the QxCav transfer ratio is pointed out.
引用
收藏
页码:12843 / 12849
页数:7
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