In Situ Multiple Optical Monitoring of Bulk Polymerization

doi:10.7503/cjcu20260051

Chem. J. Chinese Universities

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In Situ Multiple Optical Monitoring of Bulk Polymerization

ZHANG Ruiqingi, YIN Kuo, CHEN Yanjie, GU Fan, LIU Jian^*, MA Xiang

School of Chemistry and Molecular Engineering, East China University of Science and Technology

Received:2026-01-28 Revised:2026-03-02 Online First:2026-03-10 Published:2026-03-10
Contact: Jian LIU E-mail:liujianecust@ecust.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China(Nos.22125803, 22308102, T2488302) and the Guangxi Department of Science and Technology, China(No.AA23062016)

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Abstract

Abstract: Optical visualization provides a highly sensitive, non-invasive, and straightforward approach for the in situ monitoring of bulk polymerization processes. This work describes a 9,14-Diphenyl-9,14-dihydrodibenzo[a,c]phenazine(DPAC)-based molecular, whose distinct excited-state conformational responses under different micro-environments enable the detection of microscopic dynamic changes within the system. During the polymerization of MMA, the system transitions from a liquid monomer to a solid polymer. Accompanying this process, the fluorescence of DPAC shifts from red to blue, reflecting the increase in local viscosity and the restriction of molecular motion. Subsequently, the gradual enhancement of phosphorescence and the extension of its lifetime indicate the rising rigidity of the polymer network. Through dual-channel monitoring based on ratio-metric fluorescence and phosphorescence, this strategy makes the visual tracking of bulk polymerization feasible.

Key words: In situ monitoring, Bulk polymerization, Vibration-induced emission

CLC Number:

O626

TrendMD:

ZHANG Ruiqingi, YIN Kuo, CHEN Yanjie, GU Fan, LIU Jian, MA Xiang. In Situ Multiple Optical Monitoring of Bulk Polymerization[J]. Chem. J. Chinese Universities, doi: 10.7503/cjcu20260051.

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In Situ Multiple Optical Monitoring of Bulk Polymerization

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