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Citation: JIANG Zhi-Liang, LIU Shao-Pu, ZOU Cai-Xia. Polarographic Quenching Effect of Associated (PdI₄-2RhB)_n Nanoparticle System[J]. Chinese Journal of Applied Chemistry, ;2003, 20(1): 34-37. shu

Polarographic Quenching Effect of Associated (PdI₄-2RhB)_n Nanoparticle System

1.
a Department of Resource and Environmental Science, Guangxi Normal University, Guilin 541004;
2.
b Institute of Environmental Chemistry, Southwest Normal University, Chongqiang

Corresponding author: JIANG Zhi-Liang,
Received Date: 23 May 2002
Available Online: 19 August 2002
Fund Project: 国家自然科学基金(20175018) (20175018)广西自然科学基金(2014016) (2014016)

Rhodamine B(RhB) produces a single scanning polarographic wave at -0.59 V in a 10 mmol/L H₂SO₄ solution. In the presence of PdI₄^2-, RhB⁺ combining with it produces a hydrophobic associacid molecule PdI₄-2RhB via static attraction. By means of hydrophobic force and Van der Waal's force, this associated molecules form (PdI₄-2RhB)_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 (PdI₄-2RhB)_n nanoparticles are decomposed into PdI₄-2RhB 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 (PdI₄-2RhB)_n associated nanoparticles caures the polarographic quenching effect and resonance scattering effect.
- (PdI₄-2RhB)_n associated nanoparticle,
- polarographic quenching effect,
- resonance scattering
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Polarographic Quenching Effect of Associated (PdI4-2RhB)n Nanoparticle System

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Polarographic Quenching Effect of Associated (PdI₄-2RhB)_n Nanoparticle System