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- Title
Interfacial Synthesis and Functionality of Self-Stabilized Polydiaminonaphthalene Nanoparticles.
- Authors
Li, Xin-Gui; Zhang, Jia-Li; Huang, Mei-Rong
- Abstract
A simple and effective template-free synthesis method for nanosized conducting polymers with self-stability and functionality is a main challenge. Herein, a strategy is reported for the facile synthesis of poly(1,5-diaminonaphthalene) nanospherical particles by an interfacial miniemulsion oxidative polymerization of 1,5-diaminonaphthalene at mobile microinterfaces between a stirred biphase without external emulsifiers. The size of the nanospheres was carefully optimized by controlling the polymerization conditions. Formation and self-stabilization mechanisms of the nanoparticles are proposed. The constantly movable and refreshed microinterface is a key to successful synthesis of the nanospheres, for significantly suppressing secondary growth leading to agglomerated particles because vigorous stirring makes as-formed self-stabilized nanospheres instantly leave the microinterfaces. The resulting nanospheres possess several advantages: clean surface, self-stability, redispersibility, semiconductivity, electroactivity, and fluorescence emission. The fluorescence emission can be quenched by specific quenchers, thus enabling low-cost, high-performance chemosensors to be obtained for the sensitive detection of ZnII ions in a wide linear concentration range of more than five orders of magnitude with a superior detection limit down to 1 n M.
- Publication
Chemistry - A European Journal, 2012, Vol 18, Issue 32, p9877
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201200860