Assemblies of conjugated polymers: Intermolecular and intramolecular
effects on the photophysical properties of conjugated polymers
J. Kim
Division of Chemistry and Chemical Engineering, California
Institute of Technology, Pasadena, CA 91125, USA
Abstract: Conjugated polymers are emerging materials for electronic
applications due to the tunability of their properties through variation
of their chemical structure. Their applications, which currently include
light-emitting diodes (LEDs), field effect transistors (FETs), plastic
lasers, batteries, and sensors, are expanding to many new areas. The
two critical parameters that determine the function of conjugated polymer-based
devices are chemical structure and nanostructure of a conjugated polymer
in the solid state. While the physical properties of isolated polymers
are primarily controlled by their chemical structure, these properties
are drastically altered in the solid state due to electronic coupling
between polymer chains as determined by their interpolymer packing and
conformation. However, the development of effective and precise methods
for controlling the nanostructure of polymers in the solid state has
been limited because polymers often fail to assemble into organized
structures due to their amorphous character and large molecular weight.
In this review, recent developments of organizing methods of conjugated
polymers and the conformation and interpolymer interaction effects on
the photophysical properties of conjugated polymers are summarized.
* Pure Appl. Chem.
74, 2021-2081 (2002). A collection of invited, peer-reviewed articles
by the winners of the 2002 IUPAC Prize for Young Chemists.
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