Correlation
between Optical Properties and Nanomorphology of Fluoranthene-Based
Conjugated Copolymer
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Abstract
Nanoparticles of conjugated polymers
are receiving attention due to their interesting optical properties.
Here we report nanoparticles of fluoranthene-based conjugated copolymer
prepared by the Suzuki coupling reaction. The copolymer forms nanoparticles
by the spontaneous self-assembly after evaporation of organic solvent.
The mean diameter of the nanoparticles can be manipulated by varying
solvent composition. We investigated the parameters that govern the
nanostructured morphology of polymer by systematic variation of good
and poor solvent. The UV–vis and time-resolved fluorescence
spectroscopy measurement reveal the use of poor solvent in the organization
of nanostructures. Furthermore, transmission electron microscopy highlights
the importance of rigidity of the polymer backbone in morphological
development