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Poly(pyrazinoquinoxaline)s: New n ‐Type Conjugated Polymers That Exhibit Highly Reversible Reduction and High Electron Affinity
Author(s) -
Zhu Yan,
Yen ChengTyng,
Jenekhe Samson A.,
Chen WenChang
Publication year - 2004
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.200400358
Subject(s) - conjugated system , quinoxaline , electron affinity (data page) , polymer , electrochemistry , thiophene , materials science , phenylene , density functional theory , conductive polymer , electronic structure , polymer chemistry , crystallography , chemistry , molecule , organic chemistry , computational chemistry , electrode , composite material
Abstract Summary: The pyrazinoquinoxaline‐based conjugated polymers poly(2,7‐diphenylpyrazino(2,3‐ g )quinoxaline‐3,8‐diyl‐1,4‐phenylene) (PZQP) and poly(2,7‐diphenylpyrazino(2,3‐ g )quinoxaline‐3,8‐diyl‐2,5‐thiophene) (PZQT) have been synthesized and characterized. PZQP and PZQT have optical band gaps of 2.44 and 1.76 eV, respectively. Both polymers showed highly reversible electrochemical reduction, with an electron affinity of 3.6 eV for PZQP and 3.8 eV for PZQT. The electronic structures of PZQP, PZQT, and related poly(pyrazinoquinoxaline)s, were calculated by density functional theory and compared with the experimental results.Molecular structure and reduction cyclic voltammogram of PZQP.