Phosphorus as a carbon copy and as a photocopy: New conjugated materials featuring multiply bonded phosphorus

Phosphaalkenes (RP=CR ) and diphosphenes (RP=PR) are main group analogues of alkenes (R C=CR ). Molecules featuring such multiply bonded phosphorus functionalities often display structural features and chemical reactivities that mimic their purely organic counterparts, lending credence to the claim...

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Bibliographic Details
Published in:Pure and applied chemistry 2013-03, Vol.85 (4), p.801-815
Main Authors: Simpson, M. Cather, Protasiewicz, John D.
Format: Article
Language:English
Subjects:
Alkenes
Carbon
Conjugation
Fluorescence
main group chemistry
multiple bonds
Oligomers
Organic chemistry
Phosphorus
photochemistry
Photoluminescence
polycyclic aromatics
synthesis
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Summary:Phosphaalkenes (RP=CR ) and diphosphenes (RP=PR) are main group analogues of alkenes (R C=CR ). Molecules featuring such multiply bonded phosphorus functionalities often display structural features and chemical reactivities that mimic their purely organic counterparts, lending credence to the claim that these compounds are “carbon copies”. We have been expanding this analogy to include oligomers and polymers with extended conjugation that directly involve P=C and P=P units. Many of these materials, however, display little or no photoluminescence (PL). This article summarizes our efforts to understand P=C and P=P photobehavior and to produce materials having significant PL that mimic or “photocopy” the PL properties of the phosphorus-free systems. Recent materials based on benzoxaphospholes (BOPs), benzobisoxaphospholes (BBOPs), and higher analogues having significant fluorescence quantum yields are covered.
ISSN:0033-4545
1365-3075
DOI:10.1351/PAC-CON-12-09-13