| 尿素对若丹明6G在MMA-MA体系中的协同效应 |
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| 引用本文： | 何宜,张雪馨. 尿素对若丹明6G在MMA-MA体系中的协同效应[J]. 中山大学学报论丛, 1990, 0(3) |
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| 作者姓名： | 何宜 张雪馨 |
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| 作者单位： | 中山大学高分子研究所，中山大学高分子研究所 |
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| 摘 要： | 研究了尿素对若丹明6G(R6G)在甲基丙烯酸甲酯(MMA)和甲基丙烯酸(MA)聚合体系中的协同效应,尿素的存在使R6G的缔合平衡向单分子体方向移动。在MA溶液中尿素与R6G以1∶1形成分子间络合物,络合平衡常数为80mol~(-1)。荧光量子效率随尿素的含量增加而增大,R6G在MMA-MA共聚物固溶态介质中的表面荧光强度比相应组分在聚合前的液态介质中要高。
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| 关 键 词： | 若丹明6G 尿素 共聚物 络合平衡常数 |
Cooperative Effect of Urea for Rhodamine 6G in MMA-MA System |
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| He Yi,Zhang Xuexin. Cooperative Effect of Urea for Rhodamine 6G in MMA-MA System[J]. Studies in Logic, 1990, 0(3) |
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| Authors: | He Yi Zhang Xuexin |
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| Affiliation: | He Yi;Zhang Xuexin |
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| Abstract: | The cooperative effect of urea for Rhodamine 6G (R6G) in methyl metha- crylate (MMA) - methacrylic acid (MA) system before and after polymeriza- tion has been studied. The association equilibrium of R6G shifts to mono-mole- cules in the presence of urea.It has been found that the complexation between R6G and urea in MA solution produces a complex with composition 1:1 by mole. The complexation equilibrium constant is 30 mol~(-1). The fluorescent quantum efficiency of R6G in MMA-MA liquid system increases with increasing content of urea. The surface fluorescerce intensity of R6G in MMA-MA copolymer is higher than that in the liquid system. |
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| Keywords: | Rhodamine 6G urea copolymer complexation equilibrium constant |
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