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Geometry‐induced charge localization in doped phenylene chains
Author(s) -
Gregorius Heike,
Heitz Walter,
Müllen Klaus
Publication year - 1993
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19930050411
Subject(s) - delocalized electron , materials science , cyclic voltammetry , phenylene , polymer , doping , absorption spectroscopy , charge (physics) , spectroscopy , oligomer , spectral line , chemical physics , absorption (acoustics) , polymer chemistry , photochemistry , organic chemistry , chemistry , electrochemistry , optoelectronics , electrode , optics , composite material , physics , quantum mechanics , astronomy
The mechanism of charge delocalization in mono‐ and dianions of differently substituted oligo( p ‐phenylenes) has been studied by absorption spectroscopy. (Polyp‐phenylene) is of great interest in this respect, but is experimentally inaccessible because of its complete insolubility and infusibility, so data on more soluble oligomeric systems that are structurally related to the polymer have to be used to extrapolate towards the behavior of the polymer. Results from UV/vis/NIR spectra and cyclic voltammetry are reported that allow the influence of substituents on the conjugation length to be reliably predicted.