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Pt nanohelices with highly ordered horizontal pore channels as enhanced photothermal materials.

ABSTRACT: Recent studies have further demonstrated that the conjugation of noble metal helical nanostructures could alter their optical and catalytic activities. However, the intrinsic isotropic crystal growth of Pt makes the synthesis of high-quality Pt NCs with unique porous or branched nanostructures difficult. In this work, a new, powerful capping agent, N,N-dimethyloctadecylammonium bromide acetate sodium, was synthesized and used to coordinate Pt ions, slowing down the reaction rate. As a result, in aqueous solution, Pt nanohelices with highly ordered horizontal pore channels were successfully fabricated. Importantly, the Pt nanohelices were composed of several sub-2 nm Pt nanowires coiled together around a central point. The as-obtained samples exhibited enhanced photothermal properties compared with the classic Pt nanoparticles.

SUBMITTER: Song S

PROVIDER: S-EPMC5507185 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature

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Pt nanohelices with highly ordered horizontal pore channels as enhanced photothermal materials.

Song Shuyan S Wang Xiao X Li Sheling S Wang Zhuo Z Zhu Qi Q Zhang Hongjie H

Chemical science 20150723 11

Recent studies have further demonstrated that the conjugation of noble metal helical nanostructures could alter their optical and catalytic activities. However, the intrinsic isotropic crystal growth of Pt makes the synthesis of high-quality Pt NCs with unique porous or branched nanostructures difficult. In this work, a new, powerful capping agent, <i>N</i>,<i>N</i>-dimethyloctadecylammonium bromide acetate sodium, was synthesized and used to coordinate Pt ions, slowing down the reaction rate. A ...[more]

PMID: 28757957

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