Biphenyl Bis[(π-cyclopentadienyl)iron]Dication as an Efficient Cationic Photoinitiator for Epoxy Polymerization

›› 2008, Vol. 16 ›› Issue (5): 819-822.

• RESEARCH NOTES • Previous Articles

Biphenyl Bis[(π-cyclopentadienyl)iron]Dication as an Efficient Cationic Photoinitiator for Epoxy Polymerization

WANG Tao, ZHANG Ying, REN Xiaoling

State Key Lab of Chemical Resource Engineering, College of Science, Beijing University of Chemical Technology, Beijing 100029, China

Received:2007-09-25 Revised:2008-06-24 Online:2008-10-28 Published:2008-10-28
Supported by:
the National Natural Science Foundation of China(20676012).

Biphenyl Bis[(π-cyclopentadienyl)iron]Dication as an Efficient Cationic Photoinitiator for Epoxy Polymerization

王涛, 张影, 任晓玲

State Key Lab of Chemical Resource Engineering, College of Science, Beijing University of Chemical Technology, Beijing 100029, China

通讯作者: WANG Tao,E-mail:wangtwj2000@163.com
基金资助:
the National Natural Science Foundation of China(20676012).

Abstract

Abstract: Ferrocenium monocations as photoinitiators for cationic photopolymerization suffer from a limitation of low absorption and low reactivity under high-pressure Hg lamp.Here,a ferrocenium dication salt,biphenyl bis [(π-cyclopentadienyl)iron]hexafluorophosphate([bis(Cp-Fe)-biphenyl](PF₆)₂ was synthesized by the ligand exchange reaction between ferrocene and biphenyl.The chemical structure was characterized with FTIR and ¹HNMR. The separation of ferrocenium monocation cyclopentadien-iron-biphenyl hexafluorophosphate([Cp-Fe-biphenyl] PF₆)and dication[bis(Cp-Fe)-biphenyl](PF₆)₂ was carried out by column chromatography.The photoactivity of initiating photopolymerization of epoxide ERl4221 was studied as a cationic photoinitiator.[Bis(Cp-Fe)-biphenyl](PF₆)₂ can efficiently absorb radiation above 300nm and its photoactivity is higher than that of its monocation.

Key words: cationic photopolymerization, [bis(Cp-Fe)-biphenyl](PF₆)₂, photoinitiator, photoactivity

摘要： Ferrocenium monocations as photoinitiators for cationic photopolymerization suffer from a limitation of low absorption and low reactivity under high-pressure Hg lamp.Here,a ferrocenium dication salt,biphenyl bis [(π-cyclopentadienyl)iron]hexafluorophosphate([bis(Cp-Fe)-biphenyl](PF₆)₂ was synthesized by the ligand exchange reaction between ferrocene and biphenyl.The chemical structure was characterized with FTIR and ¹HNMR. The separation of ferrocenium monocation cyclopentadien-iron-biphenyl hexafluorophosphate([Cp-Fe-biphenyl] PF₆)and dication[bis(Cp-Fe)-biphenyl](PF₆)₂ was carried out by column chromatography.The photoactivity of initiating photopolymerization of epoxide ERl4221 was studied as a cationic photoinitiator.[Bis(Cp-Fe)-biphenyl](PF₆)₂ can efficiently absorb radiation above 300nm and its photoactivity is higher than that of its monocation.

关键词: cationic photopolymerization, [bis(Cp-Fe)-biphenyl](PF₆)₂, photoinitiator, photoactivity

WANG Tao, ZHANG Ying, REN Xiaoling. Biphenyl Bis[(π-cyclopentadienyl)iron]Dication as an Efficient Cationic Photoinitiator for Epoxy Polymerization[J]. , 2008, 16(5): 819-822.

王涛, 张影, 任晓玲. Biphenyl Bis[(π-cyclopentadienyl)iron]Dication as an Efficient Cationic Photoinitiator for Epoxy Polymerization[J]. , 2008, 16(5): 819-822.

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Biphenyl Bis[(π-cyclopentadienyl)iron]Dication as an Efficient Cationic Photoinitiator for Epoxy Polymerization

Biphenyl Bis[(π-cyclopentadienyl)iron]Dication as an Efficient Cationic Photoinitiator for Epoxy Polymerization

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