Abstract
Polarized photoluminescence in orientated thin films of π-conjugated oligomers is demonstrated here. Vapor-deposited thiophene/p-phenylene co-oligomers are described and it is shown that these molecules form epitaxial needle-like crystals (see Figure). Molecular modification of the co-oligomers enables the emission color to be tuned and the epitaxial crystallization to be controlled, thus leading to polarized emissions of light.
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