STUDY ON THE PHOTOSENSITIVITY AND SENSITIZATION OF CATIONIC PHOTOINITIATOR[CpFe(η6-tol)]BF4

doi:10.7517/j.issn.1674-0475.2002.03.177

Abstract

Abstract: The photosensitivity of cationic polymerization of cycloaliphatic diepoxide oligomer ERL-4221 initiated by photoinitiator[CpFe(η⁶-tol)]BF₄ has been studied.The main absorptions λ max are 374 nm and 450 nm which are longer than those of diaryliodonium salts.The optimized photosensitivity is 283.8 mJ/cm² when irradiated by 365 nm UV-ray,which is better than tol₂I⁺BF^4-.Meanwhile,the promotion of some kinds of organic peroxides on polymerization of alicyclic diexpoxide oligomer which initiated by[CpFe(η⁶-tol)]BF₄ have been studied.lt shows that BPO and CHP could promote the initiation of[CpFe(η⁶-tol)]BF₄ significantly,in accordance with the oxidability and concentration of the peroxide.The mechanism of the sensitization has been discussed preliminarily.

Key words: iron arene complex, cationic polymerization, cycloaliphatic epoxide, sensitization

CLC Number:

TQ57

LIU Ji, WANG Tao, HUANG Yu-li. STUDY ON THE PHOTOSENSITIVITY AND SENSITIZATION OF CATIONIC PHOTOINITIATOR[CpFe(η⁶-tol)]BF₄[J]. Imaging Science and Photochemistry, 2002, 20(3): 177-184.

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STUDY ON THE PHOTOSENSITIVITY AND SENSITIZATION OF CATIONIC PHOTOINITIATOR[CpFe(η⁶-tol)]BF₄

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