Luminous Change of Rhodamine 3B Incorporated into Titanate Nanosheet/Decyltrimethylammonium Hybrids under Humid Atmosphere

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  • Sasai Ryo
    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
  • Iyi Nobuo
    National Institute for Materials and Science (NIMS)
  • Kusumoto Hiroki
    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University

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Abstract

In this paper, the structural and spectroscopic properties of rhodamine 3B (R3B) cations incorporated into titanate nanosheet (TNS)/decyltrimethylammonium (C10TMA) cation hybrid was investigated in the presence and absence of adsorbed water. Powder X-ray diffraction measurement under various relative humidity indicated that the TNS/C10TMA/R3B hybrid had at least two water-adsorption sites with different affinity for water in the 2D nanospace of TNS stacked structure. Intensity reduction and blue shift in diffuse reflectance and photoluminescence spectra of the TNS/C10TMA/R3B hybrid powder was observed by water adsorption. This spectroscopic behavior could be explained as lowering of electrostatic interaction between the cation group of R3B and cation exchange sites on the TNS surface.

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