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作 者:解晓艳[1,2] 庞玉莲[3] 肖时卓[1] 杨丽[1] 邹应全[3] 陈萍[1] 周树云[1]
机构地区:[1]中国科学院理化技术研究所光化学转换与功能材料重点实验室,北京100190 [2]中国科学院大学,北京100049 [3]北京师范大学化学学院,北京100875
出 处:《影像科学与光化学》2013年第4期305-315,共11页Imaging Science and Photochemistry
摘 要:本文合成了4种磺酸肟酯类非离子型光产酸剂,用核磁氢谱确认了产物结构,并测试了其热稳定性、紫外吸收特性及产酸效率.结果表明,合成的4种磺酸肟酯类光产酸剂在350—450nm和深紫外区(DUV,248nm)都有很好的吸收,在420nm波段曝光下,(5-对三氟甲基苯磺酸酯亚胺-5H-噻吩-2-亚胺)-苯乙腈(P-2)产酸率最高,可达0.96;(5-对甲基苯磺酸酯亚胺-5H-噻吩-2-亚胺)-苯乙腈(P-1)在365nm和420nm两个波段下,均有较高的产酸率.利用实时红外(RT-IR)研究了相同浓度下4种光产酸剂对乙烯基醚化合物引发的光聚合动力学,同时研究了光产酸剂浓度对光聚合反应的影响,发现产酸剂浓度为2%时,光照30s乙烯基醚化合物的双键转化率(DC%)即能达到80%.A new class of oxime sulfonates type photo-acid generators (PAGs) which are non- ionic and halogen-free was reported here. The structures of the four PAGs were characterized by 1HNMR and their thermal stability, UV absorption properties, and acid generation efficiency were investigated in detail. The results showed that the all four PAGs displayed excellent absorption at the DUV region of 248 nm as well as the region of 350-450 nm. Exposure at 420 nm, P-2 exhibited the highest acid-forming performance with the efficiency up to 0.96. P-1 showed high acid productivity when exposed at both 365 and 420 nm. The photo- polymerization kinetics of vinyl ether initiating by the four PAGs with the same concentration were monitored by real-time infrared spectroscopy (RT-IR). At the same time, the influence of the concentration of photo-acid generator on photo-polymerization was also discussed. The RT-IR results indicated that the double bond conversion (DC%) rate of vinyl ether could reach 80% upon exposure of 30 s with a concentration of 20% for the four photo-acid generators.
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