Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-<italic style="font-style: italic">b</italic>-PEO and CdS Quantum Dots

Liu Wei; Zhang Hai-shan; Ji Xiang-ling

doi:10.1007/s10118-016-1824-2

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Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots

PAPERS | Updated：2021-05-12

- Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots
- Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots
- Chinese Journal of Polymer Science 2016年34卷第9期页码：1079-1090
- Affiliations：
  
  a. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  b. University of Chinese Academy of Sciences, Beijing 100049, China
  c. Department of Colorectal and Anal Surgery, China-Japan Union Hospital, Jilin University, Changchun 130033, China
- Author bio：
  
  Hai-shan Zhang(张海山),E-mail:hszhang@jlu.edu.cn
  ;Xiang-ling Ji(姬相玲),E-mail:xlji@ciac.ac.cn
- Funds：
  
  the National Natural Science Foundation of China(No. 21274145)
- DOI：10.1007/s10118-016-1824-2
  中图分类号：
- 收稿：2016-03-30，
  
  修回：2016-5-4，
  
  录用：2016-5-4，
  
  纸质出版：2016-10-05
- Accepted：
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Liu Wei, Zhang Hai-shan, Ji Xiang-ling. Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots[J]. Chinese Journal of Polymer Science, 2016,34(9):1079-1090. DOI: 10.1007/s10118-016-1824-2.

Liu Wei, Zhang Hai-shan, Ji Xiang-ling. Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots[J]. Chinese Journal of Polymer Science, 2016, 34(9): 1079-1090. DOI: 10.1007/s10118-016-1824-2.
Liu Wei, Zhang Hai-shan, Ji Xiang-ling. Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots[J]. Chinese Journal of Polymer Science, 2016,34(9):1079-1090. DOI: 10.1007/s10118-016-1824-2. DOI：

Liu Wei, Zhang Hai-shan, Ji Xiang-ling. Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots[J]. Chinese Journal of Polymer Science, 2016, 34(9): 1079-1090. DOI: 10.1007/s10118-016-1824-2. DOI：

摘要

Abstract

The hybrid structures of polystyrene-

-poly(ethylene oxide) (PS-

-PEO) block copolymer and inorganic nanoparticles with good stability and biocompatibility have potential applications in drug delivery and bioimaging. Spherical co-assemblies of PS

120

-PEO

318

and oleylamine-capped CdS quantum dots (QDs) are produced successfully in this work by adding water to a mixed common solvent

such as

-dimethylmethanamide (DMF)/chloroform

DMF/tetrahydrofuran (THF)

or DMF/toluene. The energy dispersive X-ray (EDX) spectrum indicates that QDs are located at the interface between the core and shell of the spherical co-assemblies. The co-assembly process during water addition is traced by transmission electron microscopy (TEM) and turbidity measurement. Spherical co-assemblies are formed through budding from bilayers of the block copolymer and QDs. The morphology of the co-assemblies is related to the miscibility of the QD-dispersing solvents with water and the morphology changes from a spherical to a vesicle-like structure with DMF/toluene. Increasing THF content in the mixed solvent causes morphological transitions from spherical co-assemblies to multi-branched cylinders and micelles where QDs are located in the central core. Increasing chloroform content yields vesicle-like structures with protruding rods on the surface. The mechanism of the morphological transitions is also discussed in detail.

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Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots

Influence of Mixed Common Solvent on the Co-assembled Morphology of PS-b-PEO and CdS Quantum Dots

DOI：10.1007/s10118-016-1824-2

摘要

Abstract

关键词

Keywords

references