Generation of a carbon dots/ammonium persulfate redox initiator couple for free radical frontal polymerization

Xiang Yun Du; Juncai Shen; Jing Zhang; Luting Ling; Cai Feng Wang; Su Chen

doi:10.1039/c7py01969f

Generation of a carbon dots/ammonium persulfate redox initiator couple for free radical frontal polymerization

Xiang Yun Du, Juncai Shen, Jing Zhang, Luting Ling, Cai Feng Wang, Su Chen

College of Chemical Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

We report a new redox initiator couple of ammonium persulfate (APS)/carbon dots (CDs) with high initiation efficiency used in frontal polymerization (FP). The CDs also served as fluorescent reagents, and had good dispersion and a relatively high absolute quantum yield (>60%). The initiation efficiency and possible mechanism of CDs/peroxydisulfate (S₂O₈^2-) initiators were investigated. The electron transfer between the CDs and S₂O₈^2- made decomposition of the latter into free radicals easier. Besides, electron transfer occurred between the CDs and vinyl monomers, prompting the CDs to be applied to initiate monomers alone. Therefore, the combined effects of the CDs and APS made vinyl monomers more prone to be triggered in FP, thereby lowering the reaction temperature considerably. This research might provide a promising avenue to discover other polymerization initiators with high efficiency for the synthesis of versatile materials.

Original language	English
Pages (from-to)	420-427
Number of pages	8
Journal	Polymer Chemistry
Volume	9
Issue number	4
DOIs	https://doi.org/10.1039/c7py01969f
State	Published - 28 Jan 2018

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title = "Generation of a carbon dots/ammonium persulfate redox initiator couple for free radical frontal polymerization",

abstract = "We report a new redox initiator couple of ammonium persulfate (APS)/carbon dots (CDs) with high initiation efficiency used in frontal polymerization (FP). The CDs also served as fluorescent reagents, and had good dispersion and a relatively high absolute quantum yield (>60%). The initiation efficiency and possible mechanism of CDs/peroxydisulfate (S2O82-) initiators were investigated. The electron transfer between the CDs and S2O82- made decomposition of the latter into free radicals easier. Besides, electron transfer occurred between the CDs and vinyl monomers, prompting the CDs to be applied to initiate monomers alone. Therefore, the combined effects of the CDs and APS made vinyl monomers more prone to be triggered in FP, thereby lowering the reaction temperature considerably. This research might provide a promising avenue to discover other polymerization initiators with high efficiency for the synthesis of versatile materials.",

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T1 - Generation of a carbon dots/ammonium persulfate redox initiator couple for free radical frontal polymerization

AU - Du, Xiang Yun

AU - Shen, Juncai

AU - Zhang, Jing

AU - Ling, Luting

AU - Wang, Cai Feng

AU - Chen, Su

PY - 2018/1/28

Y1 - 2018/1/28

N2 - We report a new redox initiator couple of ammonium persulfate (APS)/carbon dots (CDs) with high initiation efficiency used in frontal polymerization (FP). The CDs also served as fluorescent reagents, and had good dispersion and a relatively high absolute quantum yield (>60%). The initiation efficiency and possible mechanism of CDs/peroxydisulfate (S2O82-) initiators were investigated. The electron transfer between the CDs and S2O82- made decomposition of the latter into free radicals easier. Besides, electron transfer occurred between the CDs and vinyl monomers, prompting the CDs to be applied to initiate monomers alone. Therefore, the combined effects of the CDs and APS made vinyl monomers more prone to be triggered in FP, thereby lowering the reaction temperature considerably. This research might provide a promising avenue to discover other polymerization initiators with high efficiency for the synthesis of versatile materials.

AB - We report a new redox initiator couple of ammonium persulfate (APS)/carbon dots (CDs) with high initiation efficiency used in frontal polymerization (FP). The CDs also served as fluorescent reagents, and had good dispersion and a relatively high absolute quantum yield (>60%). The initiation efficiency and possible mechanism of CDs/peroxydisulfate (S2O82-) initiators were investigated. The electron transfer between the CDs and S2O82- made decomposition of the latter into free radicals easier. Besides, electron transfer occurred between the CDs and vinyl monomers, prompting the CDs to be applied to initiate monomers alone. Therefore, the combined effects of the CDs and APS made vinyl monomers more prone to be triggered in FP, thereby lowering the reaction temperature considerably. This research might provide a promising avenue to discover other polymerization initiators with high efficiency for the synthesis of versatile materials.

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DO - 10.1039/c7py01969f

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JO - Polymer Chemistry

JF - Polymer Chemistry

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Generation of a carbon dots/ammonium persulfate redox initiator couple for free radical frontal polymerization

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