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Citation: Zhu Duan-Hui, Li Chun-Rong, Liang Shu-Sen, Han Xue-Jun, Zhang Fang, Huang Jia-Xian. The Fluorescent Effect of Ring-Shaped Polystyrene Excimer in Dilute Solution[J]. Acta Physico-Chimica Sinica, ;1992, 8(02): 186-190. doi: 10.3866/PKU.WHXB19920209 shu

The Fluorescent Effect of Ring-Shaped Polystyrene Excimer in Dilute Solution

1.
Department of Chemistry, Nankai University, Tianjin 300071

Received Date: 10 October 1990
Available Online: 15 April 1992

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 od 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)·M
and (I_E/I_m)_(l,c→0)=2.15+3.05×10~(-6)·M
- Ring-shaped polystyrene; Linear polystyrene; Mark-Houwink equation; Excimer; Fluorescent effect
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