利用电子自旋共振技术捕捉烯类单体双光子聚合反应的自由基信号  

Capturing Radical Signal of Two-photon Initiated Photopolymerization of Vinyl Monomer by Means of ESR Technique

作　　者：赵宁[1] 孙渝明[2] 张元红[1] 张宝芹[1] 于晓强[1] 蒋民华[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100 [2]山东大学信息科学与工程学院,济南250100

出　　处：《高等学校化学学报》2010年第7期1285-1287,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:50673053;NSFC/RGC50218001;50173015)资助

摘　　要：自1999年烯类单体的双光子聚合方法被发现以来[1],其产物在光开关制备[2]、光子晶体[3]、微机械[4]及三维微加工[5]等领域得到了广泛的应用.由此,烯类双光子聚合机理也成为人们研究的焦点[6].到目前为止,研究者们普遍认为烯类单体的双光子聚合反应属于自由基历程,The radical signal of two-photon initiated photopolymerization（ TPIP） was captured in site firstly by means of electron spin resnance spectroscopy（ ESR） technique and N-tert-butyl-α-phenylnitrone（ BPN） captor,and the experimental results clear verify that the reaction of TPIP is radical mechanism. That one/twophoton fluorescence of the initiator can be quenched by monomers. The results show that there is energy transfer between initiator and monomer. Furthermore alone BDBAS can not give radical signal,thus we believe that this energy transfer is very important for producing radicals.

关 键 词：双光子 光聚合反应 自由基 

分 类 号：O631.23[理学—高分子化学] O631.5[理学—化学]