Versatile Core鈥揝hell Nanoparticle@Metal鈥揙rganic Framework Nanohybrids: Exploiting Mussel-Inspired Polydopamine for Tailored Structural Integration

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• 作者：Jiajing Zhou ; Peng Wang ; Chenxu Wang ; Yi Ting Goh ; Zheng Fang ; Phillip B. Messersmith ; Hongwei Duan
• 刊名：ACS Nano
• 出版年：2015
• 出版时间：July 28, 2015
• 年：2015
• 卷：9
• 期：7
• 页码：6951-6960
• 全文大小：835K
• ISSN：1936-086X

文摘

We report a versatile strategy based on the use of multifunctional mussel-inspired polydopamine for constructing well-defined single-nanoparticle@metal鈥搊rganic framework (MOF) core鈥搒hell nanohybrids. The capability of polydopamine to form a robust conformal coating on colloidal substrates of any composition and to direct the heterogeneous nucleation and growth of MOFs makes it possible for customized structural integration of a broad range of inorganic/organic nanoparticles and functional MOFs. Furthermore, the unique redox activity of polydopamine adds additional possibilities to tailor the functionalities of the nanohybrids by sandwiching plasmonic/catalytic metal nanostructures between the core and shell via localized reduction. The core鈥搒hell nanohybrids, with the molecular sieving effect of the MOF shell complementing the intrinsic properties of nanoparticle cores, represent a unique class of nanomaterials of considerable current interest for catalysis, sensing, and nanomedicine.