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Distance Dependence of Photoinduced Electron‐Transfer: Syntheses and Properties of Biphenylene‐Spacered Porphyrin‐Quinone Cyclophanes
Author(s) -
Staab Heinz A.,
Kratzer Bernd,
Quazzotti Serge
Publication year - 1998
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/(sici)1099-0690(199810)1998:10<2149::aid-ejoc2149>3.0.co;2-e
Subject(s) - biphenylene , chemistry , porphyrin , quinone , anthracene , electron transfer , photochemistry , cyclophane , electron acceptor , polycyclic compound , acceptor , naphthalene , photoinduced electron transfer , isomerization , stereochemistry , crystallography , crystal structure , organic chemistry , molecule , phenylene , catalysis , physics , condensed matter physics , polymer
In continuation of previous syntheses of benzene‐, naphthalene‐, and anthracene‐spacered porphyrin‐quinone cyclophanes 1 , 2 , and 4 , biphenylene‐spacered porphyrin‐quinone cyclophanes of structure 3 as the “missing link” between 2 and 4 were prepared in multistep syntheses. These donor‐acceptor systems are of interest since, with regard to electron‐transfer rates, they complete the series of 1 , 2 , and 4. As expected the electron‐transfer of 3 proceeds between that of 2 and 4 in an especially steep region of distance dependences of electron‐transfer rates.