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Thermosensitive Nanocables Prepared by Surface-Initiated Atom Transfer Radical Polymerization

Author(s): Wei Qingshan | Zhou Wenbo | Ji Jian | Shen Jiacong

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 4;
Issue: 1;
Start page: 84;
Date: 2008;
Original page

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

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.
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