Photo‐triggered redox frontal polymerization: A new tool for synthesizing thermally sensitive materials |
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| Authors: | Minghui He Xun Huang Zhaohua Zeng Jianwen Yang |
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| Institution: | 1. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, , Guangzhou, 510275 China;2. State Key Laboratory of Pulp & Paper Engineering, South China University of Technology, , Guangzhou, 510640 China |
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| Abstract: | A novel approach of photo‐triggered redox frontal polymerization (FP) by integrating photocaged superbase (QA‐DBU) with a peroxide initiator (dibenzoyl peroxide, BPO) is presented for the synthesis of thermally sensitive materials. Under photo‐irradiation at a localized region, the regenerated superbase can diffuse into unirradiated regions and effectively actuate redox FP in a diffusion‐controlled manner. Moreover, the redox FP can be conducted at a much lower front temperature with enhanced front velocity. Astonishingly, the front temperature can be well‐modulated by changing the concentration of latent superbase. The prepared thermally sensitive fluorescent polymer composites exhibit enhanced fluorescence emission intensity compared to that of conventional thermal FP. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013 , 51, 4515–4521 |
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| Keywords: | diffusion frontal polymerization lower temperature photocaged superbase photopolymerization photo‐triggered redox radical polymerization thermal sensitive materials |
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