Light-Driven Wettability Changes on a Photoresponsive Electrospun Mat

被引：97

作者：

Chen, Menglin ^{[1
]}

Besenbacher, Flemming ^{[1
,2
]}

机构：

[1] Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus C, Denmark

[2] Aarhus Univ, Dept Phys & Astron IFA, DK-8000 Aarhus C, Denmark

来源：

ACS NANO | 2011年 / 5卷 / 02期

关键词：

nanofibers; light-responsive; electrospinning; wettability; SELF-ASSEMBLED MONOLAYERS; RESPONSIVE SURFACE; ORGANIC-SURFACES; AZOBENZENE; POLYMER; SUPERHYDROPHOBICITY; SUPERHYDROPHILICITY; TEMPERATURE; FABRICATION; NANOFIBERS;

D O I：

10.1021/nn103577g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel nanofibers of biodegradable polycaprolactone (P(L) modified with light-responsive azobenzene were prepared by electrospinning upon a facile one-pot reaction. The surface chemistry of the nanofibers was probed by X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary Ion mass spectrometry (ToF-SIMS). Both XPS and ToF-SIMS spectra proved the successful conjugation of azobenzene with PCL. ToF-SIMS not only enabled chemical mapping but also provided morphology information, supplementary to scanning electron microscopy (SEM). The large, reversible, and light-responsive wettability changes of the functional fibrous surfaces were further demonstrated using UV-vis spectroscopy and contact angle (CA) measurements.

引用

页码：1549 / 1555

页数：7

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