| 稀溶液中环型聚苯乙烯的激基缔合物荧光效应 |
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| 引用本文： | 朱端慧,李春荣,梁树森,韩学军,张芳,黄家贤.稀溶液中环型聚苯乙烯的激基缔合物荧光效应[J].物理化学学报,1992,8(2):186-190. |
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| 作者姓名： | 朱端慧 李春荣 梁树森 韩学军 张芳 黄家贤 |
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| 作者单位： | Department of Chemistry, Nankai University, Tianjin 300071 |
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| 摘 要： | 采用乙酸乙酯为环型和线型聚苯乙烯的非良溶剂, 确定了Mark-Houwink方程分别为η]_r=1.91×10~(-2)·M~(0.607)和η]_l=4.06×10~(-2)·M~(0.572)。研究了环型和线型聚苯乙烯的激基缔合物的荧光效应。通过稀溶液中环型和线型高分子线团在柔顺性上存在着差异, 解释了二者之间在荧光效应方面的差异, 并根据实验结果,确定了(I_E/I_M)c→0～M关系式分别为(I_E/I_M)r,c→0=1.91+3.40×10~(-6)M和(I_E/I_M)l,c→0=2.15+3.05×10~(-6)M。
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| 关 键 词： | 环型聚苯乙烯 线型聚苯乙烯 Mark-Houwink方程 激基缔合物 荧光效应 |
| 收稿时间： | 1990-10-10 |
| 修稿时间： | 1991-02-14 |
THE FLUORESCENT EFFECT OF RING-SHAPED POLYSTYRENE EXCIMER IN DILUTE SOLUTION |
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| Zhu Duanhui,Li Chunrong,Liang Shusen,Han Xuejun,Zhang Fang,Huang Jiaxian.THE FLUORESCENT EFFECT OF RING-SHAPED POLYSTYRENE EXCIMER IN DILUTE SOLUTION[J].Acta Physico-Chimica Sinica,1992,8(2):186-190. |
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| Authors: | Zhu Duanhui Li Chunrong Liang Shusen Han Xuejun Zhang Fang Huang Jiaxian |
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| Institution: | Department of Chemistry, Nankai University, Tianjin 300071 |
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| Abstract: | Mark-Houwink equations of ring-shaped and linear polystyrene in ethyl acetate were obtained as: η]_r=1.91×10~(-2)·M~(0.607) and η]_1=4.06×10~(-2)·M~(0.572). The excimer fluorescent effect of the ring-shaped and linear polystyrene was studied. According to the difference of flexibility between ring-shaped and linear polymer coils in their dilute solution formed by not good solvent the difference of the excimer effect between them may be interpreted. Two correlation linear equations concerning to the (I_E/I_M)_(c→0) versus molecular weight of the samples were obtained.(I_E/I_m)_(r,c→0)=1.91+3.40×10~(-6)·Mand (I_E/I_m)_(l,c→0)=2.15+3.05×10~(-6)·M |
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| Keywords: | Ring-shaped polystyrene Linear polystyrene Mark-Houwink equation Excimer Fluorescent effect |
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