Premium
Systematic Investigation of PPV Analogue Oligomers Incorporating Low‐Coordinate Phosphorus Centres
Author(s) -
Smith Rhett C.,
Protasiewicz John D.
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300551
Subject(s) - chemistry , conjugated system , steric effects , phosphorus , series (stratigraphy) , carbon fibers , stereochemistry , organic chemistry , polymer , paleontology , materials science , composite number , composite material , biology
Sterically‐encumbered ligands tethered to conjugated segments have been developed and employed in concert with existing bulky ligands to prepare a series of phospha ‐PPV oligomers. A study of the variation of λ π‐π* values along this series indicates that low‐coordinate phosphorus centres can support conjugation across extended systems, and generally confirms the expected red shift across the series from all‐carbon oligomers to phosphaalkenes to diphosphenes. These findings provide experimental evidence that low‐coordinate phosphorus centres are in fact capable of supporting electronic communication across extended π conjugated systems. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)