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Nanoscale Heterogeneities in Nematic Azobenzene Polymethacrylates for Optical Nanowriting
Author(s) -
Galli Giancarlo,
Szanka Istvan,
Andreozzi Laura,
Autiero Ciro,
Faetti Massimo,
Giordano Marco,
Zulli Fabio
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200651366
Subject(s) - azobenzene , nanoscopic scale , liquid crystal , materials science , polymer , chemical physics , molecular dynamics , spin (aerodynamics) , nanotechnology , polymer chemistry , optoelectronics , chemistry , computational chemistry , thermodynamics , physics , composite material
ESR studies of the rotational dynamics of the cholestane spin probe dissolved in nematic azobenzene polymethacrylates from above T NI to below T g are presented. Different dynamic regimes were recognized, in which the molecular sites or distributions of molecular sites were populated depending on the structure of the polymers and their thermal histories. We highlight the significance of such spatial‐temporal nanoscale heterogeneities in view of possible application of the azobenzene polymers in erasable optical nanowriting.