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Statistical Conjugated Polymers Comprising Optoelectronically Distinct Units
Author(s) -
Hollinger Jon,
Sun J.,
Gao D.,
Karl D.,
Seferos D. S.
Publication year - 2013
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201200777
Subject(s) - differential scanning calorimetry , crystallinity , polymer , materials science , conjugated system , monomer , chemical engineering , thin film , organic solar cell , polymer chemistry , absorption (acoustics) , nanotechnology , composite material , physics , engineering , thermodynamics
Abstract Poly(3‐heptylselenophene)‐ stat ‐poly(3‐hexylthiophene) is synthesized and characterized in terms of its crystallinity and performance in an organic photovoltaic (OPV) cell. Despite the random distribution of units along the polymer main chain, the material is semi‐crystalline, as demonstrated by differential scanning calorimetry and wide‐angle X‐ray diffraction. Thin‐film absorption suggests an increased compatibility than seen with 3‐hexylselenophene monomer. Optoelectronic properties are an average of the two homopolymers, and OPV performance is enhanced by a broadened absorption profile and a favorable morphology.