A Biomimetic Chemical Approach to Facile Preparation of Large-Area, Patterned, ZnO Quantum Dot/Polymer Nanocomposites on Flexible Plastics
writer：Shengli Zou, Peng Yang*, Wantai Yang*
keywords：CORE-SHELL NANOPARTICLES; LIGHT-EMITTING-DIODES; ZINC-OXIDE NANORODS; SEMICONDUCTOR CLUSTERS; DENDRIMER TEMPLATES; AQUEOUS-SOLUTION; METAL-CLUSTERS; SOLAR-CELLS; THIN-FILMS; POLYMER
source：期刊
specific source：Macro. Chem. Phys.
Issue time：2009年
This study reports a new biomimetic approach to fabricate ZnO quantum dots (QDs) directed by surface-immobilized acidic-polymer brushes. Through multiple characterization methods including XPS, high-resolution TEM, SEM, AFM, XRD, UV-vis absorption and fluorescence spectroscopy, we found that surface-photografted poly(acrylic acid) chains could mediate the heterogeneous nucleation and growth processes of zinc precursors to obtain ZnO QDs with a diameter of 4-5 nm. These QDs show quantum effects such as a blue shift of the excitation energy and enhanced UV emission, and more importantly, could be further formed in situ within the polymer matrix to fabricate transparent inorganic/organic hybrid nanocomposites and large-area arrays on flexible plastic (poly(propylene)) substrate. It is expected that the result presented could instantly raise interest in the research and industrial fields, such as polymer-supported advanced technologies, ZnO nanocrystals, biomineralization, and macroelectronics.