Triplet Excited State Behavior of Naphthalene-Based Pseudopeptides in the Presence of Energy Donors
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Other documents of the author: Bonancía, Paula; Vigara, Laura; Galindo, Francisco; Luis, Santiago V.; Jiménez, M. Consuelo; Miranda, Miguel A.
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7053
comunitat-uji-handle3:10234/8639
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http://dx.doi.org/10.1021/jp304883u |
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Title
Triplet Excited State Behavior of Naphthalene-Based Pseudopeptides in the Presence of Energy DonorsAuthor (s)
Date
2012Publisher
American Chemical SocietyISSN
1520-6106Type
info:eu-repo/semantics/articlePublisher version
http://pubs.acs.org/doi/abs/10.1021/jp304883uSubject
Abstract
In this work, the triplet state behavior of naphthalene-based pseudopeptides with amide-based macrocyclic or lateral chain substructures has been investigated in the presence of benzophenone and/or biphenyl, as suitable ... [+]
In this work, the triplet state behavior of naphthalene-based pseudopeptides with amide-based macrocyclic or lateral chain substructures has been investigated in the presence of benzophenone and/or biphenyl, as suitable energy-donating chromophores. Their behavior has been compared with that of 1,4-dimethylnaphthalene as model compound. In all the cases, the triplet–triplet absorption of naphthalene is detected by transient absorption spectroscopy, upon selective excitation of benzophenone at 355 nm. The kinetics of formation and decay of this species is markedly slower in the pseudopeptides, due to retardation of triplet–triplet energy transfer and exciplex formation. Finally, the delayed fluorescence detected in the model naphthalene is absent in the pseudopeptides. The concept can, in principle, be exploited for the study of excited-state interactions in supramolecular systems. [-]
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The Journal of Physical Chemistry B, 116, 33Rights
Copyright © 2012 American Chemical Society
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