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Fluorescence techniques in the study of polymer colloids
Author(s) -
Winnik Mitchell A.
Publication year - 1984
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760240205
Subject(s) - materials science , fluorescence , colloid , excimer , polymer , core (optical fiber) , anthracene , luminescence , pyrene , chemical engineering , nanotechnology , chemical physics , photochemistry , optics , chemistry , organic chemistry , optoelectronics , composite material , physics , engineering
Applications of fluorescence techniques to the study of polymer colloids are reviewed, with emphasis on excimer and exciplex forming probes and fluorescence energy transfer processes. In these experiments non‐aqueous dispersions covalently labelled with naphthalene or anthracene were examined by a variety of techniques in order to elucidate aspects of core morphology with a resolution of about 10Å. The current “concentric sphere” or “core‐shell” model of colloid structure was found to be inconsistent with the results of the luminescence experiments. A new “microphase” model is proposed which overcomes these difficulties. In this model, the core structure is seen to be made up of phase‐separated microdomains of core and stabilizer chains.