Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (3): 616.

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Preparation of Nanocrystal/Polymer Composite Monolayer for TEM Characterization

YAO Xi, DONG Feng-Xia, WU Jie, NING Yang, ZHANG Hao*   

  1. State Key Laboratory of Supramolecular Structure and Materials, Jilin Univeristy, Changchun 130012, China
  • Received:2009-05-22 Online:2010-03-10 Published:2010-03-10
  • Contact: ZHANG Hao. E-mail: hao_zhang@jlu.edu.cn
  • Supported by:

    高等学校全国优秀博士学位论文作者专项资金(批准号: 200734)、国家自然科学基金(批准号: 20704014)和吉林省青年科研基金(批准号: 20080101)资助.

Abstract:

A facile and feasible method for preparing transmission electron microscope(TEM) specimen was reported by combining the phase transfer of aqueous nanocrystals(NCs) and the formation of polymer-supported free-standing films on water/air interface. In comparison to traditional TEM specimen preparation method-especially for aqueous systems, the quality of TEM images is greatly improved due to better particle dispersion. The TEM images show that through optimizing a few preparation factors, distinct particle dispersion and clear images of individual particles can be observed. In addition, we apply this strategy to other NCs to prove that this method is universal for preparing TEM samples of various NCs, such as Au, Ag, CdS and CdTe.

Key words: Nanocrystal; TEM characterization; Phase transfer; Monolayer; Composite

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