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Responsive hyperbranched poly(formyl-1,2,3-triazole)s toward quadruple-modal information security protection

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Abstract

Secrecy has received tremendous attention in modern information society. Innovative polymer-based fluorescent materials with multiple mode emission are quite desirable to achieve multistage data security. Herein, a series of soluble and thermally stable hyperbranched poly(formyl-1,2,3-triazole)s (hb-PFTAs) with high molecular weights were facilely prepared by catalyst-free polycycloaddition of aldehyde-activated internal triyne and diazides. Functional moieties of triphenylamine and binaphthyl could be incorporated into the polymers to offer them with unique fluorescence and circular dichroism properties, respectively. By taking advantage of activated ethynyl and aldehyde groups on their peripheries and in the internal branch chains, the hb-PFTAs can undergo efficient single- and double-stage post-functionalization. More importantly, based on the remarkable fluorescence responses to hydrazine and hydrochloric acid, the hyperbranched polymers are featured with triple-mode fluorescent patterns and have been applied in quadruple-modal information encryption and storage with enhanced security and density. Collectively, this work not only enriches the structural diversity of the existing triazole-based material library, but also provides new polymeric materials for data and information security application.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (21788102, 21901075), the Natural Science Foundation of Guangdong Province (2016A030312002, 2019B030301003), and the Innovation and Technology Commission of Hong Kong (ITC-CNERC14S01). Li B is thankful for support from the China Postdoctoral Science Foundation (2019M662889).

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Author notes

  1. These authors contributed equally to this work.

Authors and Affiliations

  1. State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, Center for Aggregation Induced Emission, South China University of Technology, Guangzhou, 510640, China

    Baixue Li, Kai You, Anjun Qin & Ben Zhong Tang

  2. Shenzhen Institute of Molecular Aggregate Science and Engineering, School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, China

    Ben Zhong Tang

  3. Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China

    Ben Zhong Tang

  4. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, China

    Zhen Li

  5. Foshan Nanhai Guangdong Technology University CNC Equipment Cooperative Innovation Institute, Foshan, 528225, China

    Zhen Li

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  1. Baixue Li
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  2. Zhen Li
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  3. Kai You
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  4. Anjun Qin
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  5. Ben Zhong Tang
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Corresponding authors

Correspondence to Anjun Qin or Ben Zhong Tang.

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Conflict of interest The authors declare no conflict of interest.

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Supporting information The supporting information is available online at http://chem.scichina.com and http://link.springer.com/journal/11426. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.

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Li, B., Li, Z., You, K. et al. Responsive hyperbranched poly(formyl-1,2,3-triazole)s toward quadruple-modal information security protection. Sci. China Chem. 65, 771–777 (2022). https://doi.org/10.1007/s11426-021-1192-5

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  • DOI: https://doi.org/10.1007/s11426-021-1192-5

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