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New luminescent fluorenyl-armed linear porphyrin trimers with diphenylacetylene bridges

Paper ID Volume ID Publish Year Pages File Format Full-Text
26539 43961 2014 11 PDF Available
Title
New luminescent fluorenyl-armed linear porphyrin trimers with diphenylacetylene bridges
Abstract

•Synthesis of new porphyrin trimers within totally eight peripheral fluorenyl arms is presented.•New bis zinc trimer exhibits a relatively high luminescence quantum yield (9%), higher than reference compound ZnTPP (3.3%) and parent compound ZnTFP (5%).•We report an efficient energy transfer from the fluorenyl arms toward the porphyrins, as well as from the zinc complexes toward the free base central porphyrin.

First a series of porphyrins bearing various fluorenyl donor groups is presented; an intermediate porphyrin bearing three fluorenyl arms (zinc complex 12) and compound 13, bearing only two fluorenyl groups. Then starting from these building blocks, synthesis of new porphyrin trimers 7 and 8, with in totally eight peripheral fluorenyl arms is performed by using a palladium catalyst. Photophysical properties; absorption and luminescence, of new trimers 7 and 8 are presented. We can then compare these properties to those of reference porphyrin monomer TFP (2), as well as to those of porphyrin dendrimers bearing various numbers of fluorenyl arms (3 and 4) and finally to those of the corresponding dimers 5 and 6, which are the precursor models of this work.

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Keywords
Porphyrins; Fluorene; Trimer; Diphenylacetylene; Luminescence
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New luminescent fluorenyl-armed linear porphyrin trimers with diphenylacetylene bridges
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 288, 15 August 2014, Pages 23–33
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us