报告题目：Tiny Chemistry: A General and Robust Strategy for Monodisperse Nanocrystals by
Capitalizing on Amphiphilic Unimolecular Star-Like Block Copolymers
as Nanoreactors
报告人： Assoc. Prof. Zhiqun Lin
Georgia Institute of Technology, USA
时间： 6月24日(周一) 上午10:00
地点： 卢嘉锡楼报告厅（202）
以下为报告的摘要部分：
Abstract:
Colloidal nanocrystals exhibit a wide range of size and shape dependent properties and have found application in a myriad of fields such as optics, electronics, mechanics, drug delivery and catalysis to name but a few. Synthetic protocols that enable simple and convenient production of colloidal nanocrystals with controlled size, shape and composition are therefore of key general importance. Current strategies, however, often require stringent experimental conditions, are difficult to generalize, or require tedious multi-step reactions and purification. Recently, linear amphiphilic block copolymer micelles have been used as template for the synthesis of functional nanocrystals, but the thermodynamic instability of these micelles limits the scope of this approach. In this talk, I will elaborate a general strategy for synthesizing a large variety of functional nanocrystals with precisely controlled dimensions, compositions and architectures by using star-like block copolymers as templates. This new class of copolymers forms unimolecular micelles that are structurally stable under various experimental conditions and therefore overcomes the intrinsic instability of linear block copolymer micelles. Our approach enables the facile synthesis of organic solvent- and water-soluble nearly monodisperse nanocrystals with desired composition and architecture, including core/shell and hollow nanostructures. To demonstrate the generality of our approach we describe, as examples, the synthesis of various sizes and architectures of metallic, semiconductor, ferroelectric, magnetic and luminescent colloidal nanocrystals.1
References
(1) Pang, X.; Zhao, L.; Han, W.; Xin, X.; Lin, Z. Nature Nanotech., 8, 426 (2013)
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固体表面物理化学国家重点实验室
biwn必赢
2013-06-19
