Construction of Chiroptical Switch on Silica Nanoparticle Surface <italic style="font-style: italic">via</italic> Chiral Self-assembly of Side-chain Azobenzene-containing Polymer

Guang-Xing Song; Teng-Fei Miao; Xiao-Xiao Cheng; Hao-Tian Ma; Zi-Xiang He; Wei Zhang; Zheng-Biao Zhang; Xiu-Lin Zhu

doi:10.1007/s10118-021-2580-5

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Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer

ARTICLE | Updated：2021-06-04

- Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer
- Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer
- Chinese Journal of Polymer Science 2021年39卷第12期页码：1528-1537
- Affiliations：
  
  1.Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou 215123, China
- Author bio：
  
  weizhang@suda.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 21971180 and 92056111), Natural Science Key Basic Research of Jiangsu Province for Higher Education (No. 19KJA360006), Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX20_2655), College Students’ Innovation and Entrepreneurship Program (No. 201910285021Z), the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions and the Program of Innovative Research Team of Soochow University. Prof. W. Zhang thanks Mr. J. Z. Wang in University of Waterloo for English editing.
- DOI：10.1007/s10118-021-2580-5
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Guang-Xing Song, Teng-Fei Miao, Xiao-Xiao Cheng, 等. Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer[J]. Chinese Journal of Polymer Science, 2021,39(12):1528-1537.

Guang-Xing Song, Teng-Fei Miao, Xiao-Xiao Cheng, et al. Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer[J]. Chinese Journal of Polymer Science, 2021,39(12):1528-1537.
Guang-Xing Song, Teng-Fei Miao, Xiao-Xiao Cheng, 等. Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer[J]. Chinese Journal of Polymer Science, 2021,39(12):1528-1537. DOI： 10.1007/s10118-021-2580-5.

Guang-Xing Song, Teng-Fei Miao, Xiao-Xiao Cheng, et al. Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer[J]. Chinese Journal of Polymer Science, 2021,39(12):1528-1537. DOI： 10.1007/s10118-021-2580-5.

摘要

Abstract

In this contribution, we utilized surface-initiated atom transfer radical polymerization (SI-ATRP) to prepare organic-inorganic hybrid core/shell silica nanoparticles (NPs), where silica particles acted as cores and polymeric shells (PAzoMA*) were attached to silica particles ,via, covalent bond. Subsequently, chiroptical switch was successfully constructed on silica NPs surface taking advantage of supramolecular chiral self-assembly of the grafted side-chain Azo-containing polymer (PAzoMA*). We found that the supramolecular chirality was highly dependent on the molecular weight of grafted PAzoMA*. Meanwhile, the supramolecular chirality could be regulated using 365 nm UV light irradiation and heating-cooling treatment, and a reversible supramolecular chiroptical switch could be repeated for over five cycles on silica NPs surface. Moreover, when heated above the glass transition temperature (,T,g,) of PAzoMA*, the organic-inorganic hybrid nanoparticles (SiO,2,@PAzoMA* NPs) still exhibited intense DRCD signals. Interestingly, the supramolecular chirality could be retained in solid film for more than 3 months. To conclude, we have prepared an organic-inorganic hybrid core/shell chiral silica nanomaterial with dynamic reversible chirality, thermal stability and chiral storage functions, providing potential applications in dynamic asymmetric catalysis, chiral separation and so on.

关键词

Keywords

Silica nanoparticlesChiroptical switchSupramolecular chiral assemblyAzo-containing polymer

references

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Construction of Chiroptical Switch on Silica Nanoparticle Surface via Chiral Self-assembly of Side-chain Azobenzene-containing Polymer

DOI：10.1007/s10118-021-2580-5

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