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罗丹明B-PdI2-4缔合纳米粒子体系的极谱猝灭效应
引用本文:蒋治良,刘绍璞,邹彩霞.罗丹明B-PdI2-4缔合纳米粒子体系的极谱猝灭效应[J].应用化学,2003,20(1):34-0.
作者姓名:蒋治良  刘绍璞  邹彩霞
作者单位:1. 广西师范大学资源与环境学系,桂林,541004;西南师范大学环境化学研究所,重庆
2. 西南师范大学环境化学研究所,重庆
3. 广西师范大学资源与环境学系,桂林,541004
基金项目:国家自然科学基金 (2 0 175 0 18),广西自然科学基金 (2 0 14 0 16),广西高校自然科学基金资助项目
摘    要:缔合纳米微粒;共振散射;罗丹明B-PdI2-4缔合纳米粒子体系的极谱猝灭效应

关 键 词:缔合纳米微粒  共振散射  罗丹明B-PdI2-4缔合纳米粒子体系的极谱猝灭效应
文章编号:1000-0518(2003)01-0034-04
收稿时间:2009-06-29
修稿时间:2002年5月23日

Polarographic Quenching Effect of Associated (PdI4-2RhB)n Nanoparticle System
JIANG Zhi-Liang a,b,LIU Shao-Pu b,ZOU Cai-Xia a.Polarographic Quenching Effect of Associated (PdI4-2RhB)n Nanoparticle System[J].Chinese Journal of Applied Chemistry,2003,20(1):34-0.
Authors:JIANG Zhi-Liang a  b  LIU Shao-Pu b  ZOU Cai-Xia a
Institution:JIANG Zhi-Liang a,b*,LIU Shao-Pu b,ZOU Cai-Xia a
Abstract:Rhodamine B(RhB) produces a single scanning polarographic wave at -0.59 V in a 10 mmol/L H_2SO_4 solution. In the presence of PdI 2- _4, RhB + combining with it produces a hydrophobic associacid molecule PdI_4-2RhB via static attraction. By means of hydrophobic force and Van der Waal's force, this associa- ted molecules form (PdI_4-2RhB)_n associated nanoparticles in violet-red color, in size of about 20 nm. The nanoparticles exhibit a synchronous scattering peak at 470 nm and a characteristic resonance scattering peak at 520 nm, and the polarographic wave at -0.59 V is quenched. When organic solvents such as alcohols and acetone is added into the nanoparticle system, the (PdI_4-2RhB)_n nanoparticles are decomposed into PdI_4-2RhB molecules, and the two mentioned scattering peaks disappear, the polarographic wave and the synchronous fluorescence peak increase, and the color of the system reduces to red. The results demonstrate that the formation of (PdI_4-2RhB)_n associated nanoparticles caures the polarographic quenching effect and resonance scattering effect.
Keywords:PdI_4-2RhB)_n associated nanoparticle  polarographic quenching effect  resonance scattering
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