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Citation: ZHOU Yun-You, SHE Shi-Ke, ZHANG Li, YAN Zheng-Quan, LU Qin, WANG Lun. Preparation and Resonance Light Scattering Property of Functional β-Diketone Polymeric Nanoparticles[J]. Chinese Journal of Applied Chemistry, ;2004, 21(12): 1225-1228. shu

Preparation and Resonance Light Scattering Property of Functional β-Diketone Polymeric Nanoparticles

1.
College of Chemistry and Material Science, Anhui Normal University, Wuhu 241000

Corresponding author: WANG Lun,
Received Date: 17 February 2004
Available Online: 4 June 2004
Fund Project: 国家自然科学基金资助项目(20375001) (20375001)

A kind of functional β-diketone polymeric nanoparticles(PVK) was prepared by an oxidation-degradation of PVK under ultrasonic radiation. The enol structures of PVK were characterized by IR spectroscopy. The nanoparticles are spherical with an average diameter of 20 nm. Studies on the resonance light scattering(RLS) properties of PVK show that the interaction of PVK with the proteins results in a great enhancement of RLS signals at 380 nm when pH=3.0. And the enhanced intensity of PLS at this wavelength is proportional to the concentration of the proteins. A protein determination method is thus proposed based on this property. Under optimal conditions, the linear ranges are o~15.0×10^-6 g/mL and 0.2×10^-6~8.5×10^-6 g/mL for HSA and γ-G, respectively. The detection limits are 1.4×10^-9 g/mL and 17.5×10^-9 g/mL for HSA and γ-G, respectively. The method has been applied to the analysis of total proteins in human serum samples with satisfactory result.
- polymeric nanoparticle,
- PVA,
- β-diketone,
- protein,
- resonance light scattering
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