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  • First-order conformation transition of single poly(2-vinylpyridine) molecules in aqueous solutions.

First-order conformation transition of single poly(2-vinylpyridine) molecules in aqueous solutions.

The Journal of chemical physics (2007-03-17)
Shengqin Wang, Jiang Zhao
ABSTRACT

By measuring diffusion rate, the conformation change of single poly(2-vinylpyridine) chain in aqueous solution was studied by fluorescence correlation spectroscopy. The data showed a stepwise change of hydrodynamic radius when pH value was tuned, reflecting a sign of first-order conformation transition, and a continuous change was found at varying salt concentration.

MATERIALS
Product Number
Brand
Product Description

Supelco
Poly(2-vinylpyridine), analytical standard, average Mw 37,500 (Typical), average Mn 35,000 (Typical)
Supelco
Poly(2-vinylpyridine), analytical standard, average Mw 159,000 (Typical), average Mn 152,000 (Typical)