Thermal variations of iodine nanostructures inside the channels of AlPO4-5 zeolite single crystals

J. T. Ye, Y. Iwasa, and Z. K. Tang
Phys. Rev. B 83, 193409 – Published 25 May 2011

Abstract

The structural changes of ordered hexagonal arrays of iodine nanostructures enclosed inside one-dimensional channels of aluminophosphate zeolites are studied. These isolated nanochains undergo structural transformations between linked chains and separated molecules, as shown by tracing the temperature variations of their distinctive Raman features when these nanostructures are heated thermally to the transition temperature of ∼70 °C. The reversibility of this transition is improved by replacing the conventional thermal heating with localized heating using a focused laser beam, which reduced the diffusion along the channels. In addition, the optically identified transition is consistently confirmed by thermal characterization using differential scanning calorimetric and thermal gravimetric analyses.

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  • Received 6 September 2010

DOI:https://doi.org/10.1103/PhysRevB.83.193409

©2011 American Physical Society

Authors & Affiliations

J. T. Ye1,2,*, Y. Iwasa2, and Z. K. Tang1

  • 1Department of Physics and Institute of Nano Science and Technology, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
  • 2Quantum-Phase Electronics Center and Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

  • *yejianting@ap.t.u-tokyo.ac.jp

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Vol. 83, Iss. 19 — 15 May 2011

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