Controlled orientation of cyclodextrin derivatives immobilized on gold surfaces
Controlled orientation of cyclodextrin derivatives immobilized on gold surfaces
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DOI：
10.1021/ja9539812
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发表时间：
1996-05-29
影响因子：
15
通讯作者：
MittlerNeher, S
中科院分区：
文献类型：
--
作者：
Nelles, G;Weisser, M;MittlerNeher, S
几种不同的环糊精硫醇衍生物已被固定在金表面上，通过化学吸附过程形成的薄膜，表现出显着不同的功能。合成了三种在环糊精空腔和硫醇基团之间具有不同间隔基的单硫醇化环糊精衍生物和多硫醇化环糊精的混合物，并进行了表征。这些化合物到金表面的化学吸附得到的薄膜进行了研究，通过傅里叶变换红外光谱（FTIR），飞行时间质谱，接触角测量，等离子体表面极化激元（PSP）光谱，和循环伏安法。结果发现，每种环糊精衍生物的化学结构对所得膜中的分子结构，特别是对环糊精环面的取向具有强烈的影响。模型被开发来描述在膜中的分子排列。
Several different cyclodextrinthiol derivatives have been immobilized on gold surfaces through a chemisorption process to form films which exhibit significantly different features. Three monothiolated cyclodextrin derivatives with different spacers between the cyclodextrin cavity and the thiol group and a mixture of multithiolated cyclodextrins were synthesized and characterized. Chemisorption of these compounds onto gold surfaces gave films which were investigated by Fourier transform infrared (FTIR) spectroscopy, time-of-flight mass spectrometry, contact angle measurements, plasmon surface polariton (PSP) spectroscopy, and cyclic voltammetry. It was found that the chemical structure of each cyclodextrin derivative had a strong influence on the molecular architecture in the resulting films, and in particular on the orientation of the cyclodextrin torus. Models were developed to describe the molecular arrangement in the films.