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Open Access Nano Express

Thermosensitive Nanocables Prepared by Surface-Initiated Atom Transfer Radical Polymerization

Qingshan Wei, Wenbo Zhou, Jian Ji* and Jiacong Shen

Author affiliations

Department of Polymer Science and Engineering, Key Laboratory of Macromolecule Synthesis and Functionalization, Ministry of Education, Zhejiang University, Hangzhou, 310027, People’s Republic of China

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Citation and License

Nanoscale Research Letters 2008, 4:84-89  doi:10.1007/s11671-008-9206-5

Published: 19 November 2008

Abstract

Thermosensitive nanocables consisting of Au nanowire cores and poly(N-isopropylacrylamide) sheaths (denoted as Au/PNIPAAm) were synthesized by surface-initiated atom transfer radical polymerization (SI-ATRP). The formation of PNIPAAm sheath was verified by Fourier transform infrared (FTIR) and hydrogen nuclear magnetic resonance (1H NMR) spectroscopy. Transmission electron microscope (TEM) results confirmed the core/shell structure of nanohybrids. The thickness and density of PNIPAAm sheaths can be adjusted by controlling the amount of cross-linker during the polymerization. Signature temperature response was observed from Au/cross-linked-PNIPAAm nanocables. Such smart nanocables show immense potentials as building blocks for novel thermosensitive nanodevices in future.

Keywords:
Nanocables; Gold nanowires; Poly(N-isopropylacrylamide); Surface-initiated atom transfer radical polymerization; Thermoresponsive