Self-assembly of mesoscopically ordered chromatic polydiacetylene/silica nanocomposites

Yunfeng Lu, Yi Yang, Alan Sellinger, Mengcheng Lu, Jinman Huang, Hongyou Fan, Raid Haddad, Gabriel Lopez, Alan R. Burns, Darryl Y. Sasaki, John Shelnutt and C. Jeffrey Brinker ()
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Yunfeng Lu: The University of New Mexico Center for Micro-Engineered Materials and Department of Chemical and Nuclear Engineering
Yi Yang: The University of New Mexico Center for Micro-Engineered Materials and Department of Chemical and Nuclear Engineering
Alan Sellinger: Sandia National Laboratories, Advanced Materials Laboratory
Mengcheng Lu: The University of New Mexico Center for Micro-Engineered Materials and Department of Chemical and Nuclear Engineering
Jinman Huang: The University of New Mexico Center for Micro-Engineered Materials and Department of Chemical and Nuclear Engineering
Hongyou Fan: Sandia National Laboratories, Advanced Materials Laboratory
Raid Haddad: The University of New Mexico Center for Micro-Engineered Materials and Department of Chemical and Nuclear Engineering
Gabriel Lopez: The University of New Mexico Center for Micro-Engineered Materials and Department of Chemical and Nuclear Engineering
Alan R. Burns: Sandia National Laboratories, Advanced Materials Laboratory
Darryl Y. Sasaki: Sandia National Laboratories, Advanced Materials Laboratory
John Shelnutt: Sandia National Laboratories, Advanced Materials Laboratory
C. Jeffrey Brinker: The University of New Mexico Center for Micro-Engineered Materials and Department of Chemical and Nuclear Engineering

Nature, 2001, vol. 410, issue 6831, 913-917

Abstract: Abstract Nature abounds with intricate composite architectures composed of hard and soft materials synergistically intertwined to provide both useful functionality and mechanical integrity. Recent synthetic efforts to mimic such natural designs have focused on nanocomposites1,2,3,4,5, prepared mainly by slow procedures like monomer or polymer infiltration of inorganic nanostructures6,7 or sequential deposition8,9. Here we report the self-assembly of conjugated polymer/silica nanocomposite films with hexagonal, cubic or lamellar mesoscopic order using polymerizable amphiphilic diacetylene molecules as both structure-directing agents and monomers. The self-assembly procedure is rapid and incorporates the organic monomers uniformly within a highly ordered, inorganic environment. Polymerization results in polydiacetylene/silica nanocomposites that are optically transparent and mechanically robust. Compared to ordered diacetylene-containing films prepared as Langmuir monolayers10 or by Langmuir–Blodgett deposition10, the nanostructured inorganic host alters the diacetylene polymerization behaviour, and the resulting nanocomposite exhibits unusual chromatic changes in response to thermal, mechanical and chemical stimuli. The inorganic framework serves to protect, stabilize, and orient the polymer, and to mediate its function. The nanocomposite architecture also provides sufficient mechanical integrity to enable integration into devices and microsystems.

Date: 2001
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DOI: 10.1038/35073544

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