采用钯催化的碳碳偶合反应合成了9-戊基咔唑-3,6-双-(炔苯基-4-甲酸乙酯)(Ⅰ).进一步研究了化合物Ⅰ在四氢呋喃和40%四氢呋喃水溶液中的光物理性质,结果显示,化合物Ⅰ在40%四氢呋喃水溶液中的紫外吸收峰位置与其四氢呋喃溶液相比没有发生明显移动,它在40%四氢呋喃水溶液中的单光子荧光发射峰出现在453 nm,较其在四氢呋喃溶液的发射有42 nm红移,其荧光量子效率为0.44.用波长为660 nm飞秒激光激发时,化合物Ⅰ在40%四氢呋喃水溶液中的双光子荧光发射最大峰红移至489 nm,其双光子吸收截面值为251 GM,比其在四氢呋喃溶液中的截面(151 GM)增强了60%.
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