Fabrication and photophysical properties of singlet oxygen generating nanoporous membrane

Kang Kyun Wang, Min Su Jung, Kyong Hoon Choi, Hee Won Shin, Seung Im Oh, Ji Eun Im, Da Hee Kim, Yong Rok Kim

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9 Citations (Scopus)

Abstract

The nanoporous alumina membranes (NAMs) were fabricated by a two-step aluminium anodic oxidation process. The fabricated NAMs have controllable pore diameters (40-80. nm) and unidirectionally ordered pore direction. The surface of the NAM was modified with the organo-silane agent (APTES: (aminopropyl)triethoxysilane) to induce ionic bonding between the NAM and the photosensitizer (TSPP: tetrakis(p-sulfonatophenyl)porphyrin). The morphology and chemical nature of the surface modified NAM were studied by field emission scanning electron microscope (FE-SEM), FT-IR spectra, and thermo gravimetric analysis (TGA). Furthermore, this singlet oxygen generating nanoporous membranes (SGNMs) were investigated, in detail, to understand their photophysical properties and the singlet oxygen generation efficiency which were the essential factors for their applications. Steady-state spectroscopies and nanosecond laser induced time-resolved spectroscopy were applied to get information on all photophysical properties including the lifetime of singlet oxygen which depended on the pore diameter of the SGNM.

Original languageEnglish
Pages (from-to)3905-3908
Number of pages4
JournalSurface and Coatings Technology
Volume205
Issue number15
DOIs
Publication statusPublished - 2011 Apr 25

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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