| 溶液中聚电解质分子内激态缔合体的形成 |
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| 引用本文： | 王甦畛,舒立金.溶液中聚电解质分子内激态缔合体的形成[J].高分子学报,1992,0(6):641-647. |
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| 作者姓名： | 王甦畛 舒立金 |
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| 作者单位： | 浙江大学化学系，浙江大学化学系 杭州，邮政编码:310027，杭州，邮政编码:310027 |
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| 摘 要： | 采用荧光分光光度法,实验测定了聚苯乙烯磺酸钠在无盐和有盐的水溶液中,单体和激态缔合体的荧光发射光谱.结果表明:激态缔合体单体发射强度比I_E/I_M随外加盐种类、浓度和价态而变化.在相同盐浓度下,各体系的I_E/I_M次序为:KCl>NaCl>LiCl和CaCl_2>MgCl_2。 也研究了NaCl水溶液中聚电解质分子的荧光猝灭.结果表明:随外加盐浓度逐渐增大,聚电解质分子由类棒状向无规线团状转化,该状态有利于激态缔合体的形成.
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| 关 键 词： | 荧光光谱 聚电解质溶液 聚苯乙烯磺酸钠 |
| 收稿时间： | 1988-10-15 |
THE FORMATION OF INTRAMOLECULAR EXCIMER OF POLYELECTROLYTE IN SOLUTION |
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| WANG Su-zhen,SHU Li-jin.THE FORMATION OF INTRAMOLECULAR EXCIMER OF POLYELECTROLYTE IN SOLUTION[J].Acta Polymerica Sinica,1992,0(6):641-647. |
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| Authors: | WANG Su-zhen SHU Li-jin |
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| Institution: | Department of Chmistry; Zhejiang University; Hangzhou; Post code: 310027 |
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| Abstract: | Flourimetric emission spectra of monomer and excimer in aqueous solution of sodium poly (styrenesulfonate), with or without added salt has been expermentally measured py fluorescent spectrophotometry. It shows that the ratios (IE/IM) between excimer and monomer emission intansity varies with the kind, concentration and vaiens of added salt. At the same salt concentration the order of IE/IM systems can be described as: KCl > NaCl≥LiCl and CaCl≥MgCl.Also, the fluorescence quenching of molecule of polyelectrolyty in aqueous NaCl were studied. Results shows that as the concentration of added salt increase gradually, the polyelec-troyte molecule will turn from rod-like state into random string ball state which makes the forming of excimer easily. |
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| Keywords: | Flourescence spectrum Solution of polyelectrolyte Sadium poly(styrenesulfonate) |
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