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Electron spin resonance study of polymeric charge‐transfer complexes
Author(s) -
Palaniappan Srinivasan,
Sathyanarayana Dixit N.
Publication year - 1990
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260280308
Subject(s) - chemistry , electron paramagnetic resonance , diamagnetism , monomer , paramagnetism , acceptor , charge (physics) , spin (aerodynamics) , electron paramagnetic resonance spectroscopy , semiconductor , spectroscopy , electron transfer , polymer , analytical chemistry (journal) , nuclear magnetic resonance , condensed matter physics , organic chemistry , materials science , magnetic field , physics , optoelectronics , quantum mechanics , aerospace engineering , engineering
Polymeric charge‐transfer complexes with different polymer donors and monomer acceptors were investigated by electron spin resonance spectroscopy. The spin concentrations, g ‐values and line widths in the complexes have been determined. The concentration of the paramagnetic charge‐transfer complexes generally increased with increasing strength of the donor‐acceptor tendencies, and exhibited an exponential temperature dependence of spin concentration characteristic of semiconductors. The paramagnetic charge‐transfer complexes were finally transformed into a diamagnetic product; this was confirmed by electronic spectroscopy.