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化学进展 2011, Vol. 23 Issue (5): 941-950 前一篇   后一篇

• 综述与评论 •

量子点的聚合物表面修饰及其应用

来守军, 关晓琳   

  1. 重庆三峡学院化学与环境工程学院 重庆 404000
  • 收稿日期:2010-08-01 修回日期:2010-11-01 出版日期:2011-05-24 发布日期:2011-05-04
  • 基金资助:

    教育部春晖计划(No.Z2008-1-63016)、重庆市教委项目(No.KJ091107)和重庆三峡学院重点项目(No.10ZD-14)资助

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导出 被引次数 ( 34 | 5 )

Surface Modification and Application of Quantum Dots Based on Polymers

Lai Shoujun, Guan Xiaolin   

  1. Department of Chemistry & Environmental Engineering, Chongqing Three Gorges University, Chongqing 404000, China
  • Received:2010-08-01 Revised:2010-11-01 Online:2011-05-24 Published:2011-05-04

量子点作为新型纳米发光材料备受关注,但由于光学稳定性和生物相容性的问题而在实际应用上受限。聚合物对量子点的修饰能够提供量子点合成的有效支撑基质,而且还可以改善量子点的稳定性和单分散性,进而可以拓展量子点应用于化学、物理以及生物学领域。基于聚合物修饰量子点的优势,本文简述了聚合物表面修饰量子点的方法、合成路线、步骤、特点以及发展现状。其中,双亲分子涂敷的量子点可以改善量子点的水溶性;多基配体包裹的量子点更具有稳定性和功能性;末端功能化聚合物表面修饰的量子点则可以合成更为先进功能的材料;胶封树枝状定域量子点具有单分散和优越发光特性。同时,还综述了各种表面修饰方法的最新研究进展,存在问题以及应用发展趋势。

关键词： 量子点, 聚合物, 修饰

Quantum dots (QDs) are nanometer-sized structures with the remarkable optical characteration, which have widely used in biology, chemistry and physics. Polymeric materials are not only employed as matrices for QDs for optical applications, but also provide mechanical and chemical stability to QDs as well as preventing nanocrystal agglomeration, and offering processability into technologically relevant structures. Using polymers as the modifier of QDs, surface modifications are especially required to permit monodispersion of materials, and further functionalization is necessary to facilitate specific biological and chemical interactions. The present review summarizes recent research in the development of polymer-modified QDs materials, their synthesis and fabrication methods, as well as resulting optical properties and applications. It is briefly described on surface coating of QDs with amphiphilic polymers, multivalent polymerization of QDs surface, synthesis of end-functionalized polymers on the QDs surface and preparation of the dendrimer-quantum dots materials. Surface coating of QDs with amphiphilic polymers would improve water solubility and chemical functionality of the materials. Multidentate polymeric ligands have the ability to retain the luminescence quantum yields, and to simultaneously provide the necessary colloidal stability with chemical functionality. Attachment of end-functionalized polymers to the QDs surface lead to many new applications for such advanced materials. In addition, dendrimer-encapsulated approaches have been used for the controlled synthesis of QDs. Moreover, the perspective and application about the modification are also reviewed.

Key words: quantum dots, polymers, modification Contents

中图分类号: 

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