Abstract
We report the synthesis and multi-sensitive performances of a novel type of poly(N-vinylimidazole-co-N-methylolacrylamide) (poly(VI-co-NMA)) hydrogels. These hydrogels behave excellent electric-sensitive properties and reversible bending behaviors. The influence of various parameters such as VI concentration, electric voltage, pH, and ionic strength on the electric-sensitive properties was thoroughly investigated. To obtain electrochromic hydrogels, we further prepared colloidal crystal (CC)-loaded hydrogels in which the color of the CC can be tuned by the bending behavior of the hydrogels. Moreover, these as-prepared hydrogels present excellent adsorption performances toward quantum dots, and the photoluminescence (PL) of CdTe-doped poly(VI-co-NMA) hydrogels was investigated. We found that the PL wavelengths of the CdTe-doped hydrogels could be switched reproducibly by altering the process of swelling and deswelling. These multi-functional hydrogels coupling with the characteristics of electrochromism and PL response confer them a variety of potential applications in sensors.
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Acknowledgments
This work was supported by the National Natural Science Foundations of China (21076103 and 21006046), National Natural Science Foundations of China-NSAF (10976012), the Natural Science Foundations for Jiangsu Higher Education Institutions of China (10KJB530006), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (20103221110001).
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Shi, XF., Yu, ZY., Guo, X. et al. Electrochromic performances and photoluminescence characteristics of versatile N-vinylimidazole-based hybrid hydrogels. Colloid Polym Sci 290, 371–377 (2012). https://doi.org/10.1007/s00396-011-2560-3
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DOI: https://doi.org/10.1007/s00396-011-2560-3