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Advantage of Fluorescence Correlation Spectroscopy for the Study of Polyelectrolytes

Advantage of Fluorescence Correlation Spectroscopy for the Study of Polyelectrolytes
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摘要 The advantage of fluorescence correlation spectroscopy to study single chain behavior of polyelectrolytes has been demonstrated by checking the coil-to-globule transition ofpoly 2-vinylpyridine with the change ofpH value in aqueous solution. The ultra-high sensitivity of FCS allows measurement at extreme dilution where the effect of electrostatic interaction between the chains is greatly suppressed. The results exposed first-order conformation tran- sition of P2VP as detected by FCS while inter-chain aggregation occurred in the experiments of dynamic light scat- tering. The advantage of fluorescence correlation spectroscopy to study single chain behavior of polyelectrolytes has been demonstrated by checking the coil-to-globule transition ofpoly 2-vinylpyridine with the change ofpH value in aqueous solution. The ultra-high sensitivity of FCS allows measurement at extreme dilution where the effect of electrostatic interaction between the chains is greatly suppressed. The results exposed first-order conformation tran- sition of P2VP as detected by FCS while inter-chain aggregation occurred in the experiments of dynamic light scat- tering.
出处 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2012年第9期2237-2240,共4页 中国化学(英文版)
关键词 POLYELECTROLYTE dynamic light scattering fluorescence correlation spectroscopy hydrodynamic radius polyelectrolyte, dynamic light scattering, fluorescence correlation spectroscopy, hydrodynamic radius
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