EPR Spectroscopic Characterization of Local Nanoscopic Heterogeneities during the Thermal Collapse of Thermoresponsive Dendronized Polymers | Zendy

Junk Matthias J. N. | Zendy; Li Wen | Zendy; Schlüter A. Dieter | Zendy; Wegner Gerhard | Zendy; Spiess Hans W. | Zendy; Zhang Afang | Zendy; Hinderberger Dariush | Zendy

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EPR Spectroscopic Characterization of Local Nanoscopic Heterogeneities during the Thermal Collapse of Thermoresponsive Dendronized Polymers

Author(s) -

Junk Matthias J. N.,

Li Wen,

Schlüter A. Dieter,

Wegner Gerhard,

Spiess Hans W.,

Zhang Afang,

Hinderberger Dariush

Publication year - 2010

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201001469

Subject(s) - polymer , nanoscopic scale , nanometre , characterization (materials science) , phase transition , electron paramagnetic resonance , materials science , chemical physics , polymer science , nanotechnology , chemical engineering , polymer chemistry , chemistry , physics , condensed matter physics , composite material , nuclear magnetic resonance , engineering

The collapse transition of thermoresponsive dendronized polymers was characterized on a molecular scale by CW EPR spectroscopy. Aggregation of the polymer is triggered by dynamic structural inhomogeneities of a few nanometers, and the dehydration of the polymer chains proceeds, despite the sharp phase transition, over a temperature interval of at least 30 °C (see picture).

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