4.4 Article

Fluorenyl dendrimer porphyrins: synthesis and photophysical properties

Journal

TETRAHEDRON
Volume 65, Issue 51, Pages 10693-10700

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2009.10.043

Keywords

Fluorescence; Porphyrins; Fluorene; Light harvesting; Red emission

Funding

  1. CRMPO
  2. ICMV-UMR [6226]

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New symmetrical dendrimeric type super-porphyrin bearing sixteen fluorenyl donor groups sixteen fluorenylporphyrin SOFP (1) have been synthesized and characterized. Preliminary photophysical properties are reported; in comparison to the references first generation dendrimer tetrafluorenylporphyrin TOFP (2) bearing four peripheral fluorenyl and second generation dendrimer octafluorenylporphyrin OOFP (3) bearing eight peripheral fluorenyl, the luminescence properties are slightly improved. It is found that the excitation energy transfer occurs from the sixteen fluorenyl units to the porphyrin core, following what the porphyrin emits intense red light. (C) 2009 Elsevier Ltd. All rights reserved.

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