具有光开关润湿性的含偶氮苯单分子层。

Azobenzene-containing monolayer with photoswitchable wettability.

作者信息

Delorme N, Bardeau J-F, Bulou A, Poncin-Epaillard F

机构信息

Laboratoire de Physique de l'Etat Condensé (CNRS, UMR 6087) and Laboratoire Polymères, Colloïdes et Interfaces (CNRS, UMR 6120), Université du Maine, Avenue O. Messiaen, 72085 Le Mans Cedex 09, France.

出版信息

Langmuir. 2005 Dec 20;21(26):12278-82. doi: 10.1021/la051517x.

DOI:10.1021/la051517x

PMID:16343003

Abstract

A compact monolayer containing azobenzene has been prepared on silicon substrates. The elaboration route consisted of covalent grafting of freshly synthesized azobenzene moieties onto an isocyanate-functionalized self-assembled monolayer (SAM). The highly packed and ordered isocyanate-functionalized SAM and the azobenzene-functionalized SAM were monitored and characterized by contact angle measurements and X-ray reflectivity (XR). Photoswitching of the wettability of the film induced by the reversible cis-trans isomerization of the azobenzene chromophores is experimentally shown from water and olive oil contact angle measurements.

摘要

已在硅衬底上制备了包含偶氮苯的致密单层。制备路线包括将新合成的偶氮苯部分共价接枝到异氰酸酯功能化的自组装单分子层（SAM）上。通过接触角测量和X射线反射率（XR）对高度密集且有序的异氰酸酯功能化SAM和偶氮苯功能化SAM进行了监测和表征。通过水和橄榄油接触角测量实验表明，由偶氮苯发色团的可逆顺反异构化引起的薄膜润湿性光开关效应。