A Biomimetic Chemical Approach to Facile Preparation of Large-Area, Patterned, ZnO Quantum Dot/Polymer Nanocomposites on Flexible Plastics

作者：Zou Shengli; Bai Huadong; Yang Peng^*; Yang Wantai

来源：Macromolecular Chemistry and Physics, 2009, 210(18): 1519-1527.

DOI：10.1002/macp.200900100

• biomimetic
• nanocomposites
• photografting
• surface modification
• surface patterning

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.

• 出版日期2009-9-22
• 单位北京化工大学