In:
Chemistry – A European Journal, Wiley, Vol. 12, No. 20 ( 2006-07-05), p. 5238-5245
Abstract:
Bichromophoric compounds BP‐C‐NP and BP‐C‐NBD were synthesized with benzophenone chromophore (BP) as the donor, and 2‐naphthyl (NP) and norbornadiene group (NBD) as the acceptor, respectively. Their intramolecular triplet energy transfer was examined. The bridges linking the donor and acceptors in these molecules involve a crown ether moiety complexing a sodium ion. Phosphorescence quenching, flash photolysis and photosensitized isomerization experiments indicate that intramolecular triplet energy transfer occurs with rate constants of about 3.3×10 5 and 4.8×10 5 s −1 and efficiencies of about 33 and 42 % for BP‐C‐NP and BP‐C‐NBD, respectively. Theoretical calculations indicate that these molecules adopt conformations below room temperature which allow their two‐end chromophores conducive to through‐space energy transfer.
Type of Medium:
Online Resource
ISSN:
0947-6539
,
1521-3765
DOI:
10.1002/chem.200501151
Language:
English
Publisher:
Wiley
Publication Date:
2006
detail.hit.zdb_id:
1478547-X
detail.hit.zdb_id:
1231884-X