期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 142, 期 4, 页码 1667-1672出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.9b10156
关键词
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资金
- National Science Foundation (NSF) Materials Research Science and Engineering Center at UC Santa Barbara [DMR-1720256 (IRG-2)]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Institute for Collaborative Biotechnologies [W911NF-09-0001]
- Victorian Endowment for Science, Knowledge and Innovation (VESKI)
- Louisiana State University
DNA-mediated assembly of inorganic particles has demonstrated to be a powerful approach for preparing nanomaterials with a range of interesting optical and electrical properties. Building on this inspiration, we describe a generalizable gram-scale method to assemble nanoparticles through the formation of poly(methyl methacrylate) (PMMA) triple-helices. In this work, alkene-terminated syndiotactic (st-) and isotactic (it-) PMMA polymers were prepared and subsequently functionalized to afford nanoparticle ligands. Nanoparticles with complementary st- and it-PMMA ligands could then be spontaneously assembled upon mixing at room temperature. This process was robust and fully reversible through multiple heating and cooling cycles. The versatility of PMMA stereocomplexation was highlighted by assembling hybrid structures composed of nanoparticles of different compositions (e.g., Au and quantum dots) and shapes (e.g., spheres and rods). These initial demonstrations of nanoparticle self-assembly from inexpensive PMMA-based materials present an attractive alternative to DNA-based nanomaterials.
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