Fluorescent Nanocomposite Based on PVA Polymer Dots

doi:10.6023/A12090690

Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (22): 2311-2315.DOI: 10.6023/A12090690 Previous Articles Next Articles

Article

基于聚乙烯醇聚合物点制备荧光纳米复合材料

朱守俊, 张俊虎, 宋玉彬, 张国彦, 张皓, 杨柏

吉林大学化学学院超分子结构与材料国家重点实验室长春 130012

投稿日期:2012-09-20 发布日期:2012-10-17
通讯作者: 杨柏 E-mail:byangchem@jlu.edu.cn
基金资助:
项目受国家自然科学基金(Nos. 91123031, 20921003, 50973039, 21074048)资助.

Fluorescent Nanocomposite Based on PVA Polymer Dots

Zhu Shoujun, Zhang Junhu, Song Yubin, Zhang Guoyan, Zhang Hao, Yang Bai

State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012

Received:2012-09-20 Published:2012-10-17
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 91123031, 20921003, 50973039, 21074048).

Currently, fluorescent polymer dots (PDs) draw much attention these years in the fields of bioimaging and sensor due to their high fluorescence efficiency and extraordinary light-gathering capability. However, the present PDs are most conjugated polymer dots derived from conjugated polymer assembly. They preserve the advantages of conjugated polymer dots. Moreover, they are more stable than conjugated polymer and can be further functionalized for practical applications. The PDs in this article are prepared from non-conjugated linear polymer instead of conjugated polymer. Linear polymer is a kind of macromolecules composed of repeating non-conjugated structural units, such as polyethylene glycol (PEG), polysaccharides. These polymers show no fluorescence due to lack of photoluminescent centre. As a result, it is fancy to obtain fluorescent materials from this kind of “simple” polymers. Using carbonization method, photoluminescent polymer dots were prepared by moderately hydrothermal treating polyvinyl alcohol (PVA). PDs contain not only the fluorescent carbon center, but also the connected polymer chains. It’s highly interesting to apply these PDs to polymer based fields using the outstanding properties of polymer chains. In this paper, derived from the fluorescent property and connected polymer chains of PDs, we investigated the functional nanocomposite based on PDs. Firstly, the polyvinyl alcohol (PVA)/PDs nanocomposite films were prepared (PDs was synthesized by carbonization of PVA). The nanocomposite films hold the fluorescent properties of PDs while it’s also facile to be processed like the linear PVA, for example, nanocomposite films were prepared based on PDs, the proportion of PDs and PVA can be tuned as requirement from 0, 20%, 40%, 60%, 80%, 100%. The nanocomposite films have multi-color emission properties using different excitations due to the excitation-dependent behavior of PDs. Furthermore, other nanocomposites based on PDs were investigated such as PDs/water-solubility polymers, PDs/graphene quantum dots (GQDs) and PDs/semiconductor quantum dots. These nanocomposites have di-fluorescence property at the same excitation and could be used at sensor fields.

Key words: fluorescent polymer dots, graphene quantum dots, nanocomposite, multi-color emission

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Zhu Shoujun, Zhang Junhu, Song Yubin, Zhang Guoyan, Zhang Hao, Yang Bai. Fluorescent Nanocomposite Based on PVA Polymer Dots[J]. Acta Chimica Sinica, 2012, 70(22): 2311-2315.

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基于聚乙烯醇聚合物点制备荧光纳米复合材料

Fluorescent Nanocomposite Based on PVA Polymer Dots

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