Synthesis, characterization, energy transfer and photophysical properties of ethynyl bridge linked porphyrin-naphthalimide pentamer and its metal complexes

Zhijie Xu, Qunbo Mei, Qingfang Hua, Ruqiang Tian, Jiena Weng, Yujie Shi, Wei Huang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Abstract A novel ethynyl bridge linked naphthalimide-functionized porphyrin TANPH2 has been synthesized by a combination of Sonogashira coupling and Gonsalves and Pereira nitrobenzene reaction, and the corresponding metal (Zn2+ and Cu2+) complexes TANPZn and TANPCu were synthesized. The structures of these compounds were characterized by 1H and 13C NMR spectra, FT-IR, MALDI-TOF-MS and elemental analysis. The photophysical properties have been investigated by UV-Vis absorption and steady-state fluorescence spectroscopy. Energy transfer studies have revealed that the excitation energy transfer occurred from the naphthalimide units to the porphyrin core. By the introduction of ethynyl bridges between the peripheral naphthalimide arms and the porphyrin core, TANPH2 and TANPZn can emit intense red light with high fluorescent quantum yields.

Original languageEnglish
Article number21389
Pages (from-to)1-8
Number of pages8
JournalJournal of Molecular Structure
Volume1094
DOIs
StatePublished - 15 Aug 2015
Externally publishedYes

Keywords

  • Energy transfer
  • Ethynyl bridge
  • Light harvesting
  • Naphthalimide
  • Porphyrin

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