Morphology-controllable synthesis of pyrene nanostructures and its morphology dependence of optical properties

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Xiujuan Zhang
  • Xiaohong Zhang
  • Wensheng Shi
  • Xiangmin Meng
  • Shuittong Lee

Detail(s)

Original languageEnglish
Pages (from-to)18777-18780
Journal / PublicationJournal of Physical Chemistry B
Volume109
Issue number40
Publication statusPublished - 13 Oct 2005

Abstract

Morphology-controllable synthesis of various pyrene nanostructures from nanoparticles to short nanorods and nanowires (long nanorods) was achieved by a simple self-assembly method. In this approach, aqueous sodium dodecyl sulfate (SDS) micelles were used as templates to direct the self-assembly of the pyrene molecules into nanorods. It was found that changing the concentration ratio of the pyrene to SDS molecules could be employed to control the aspect ratio (length to diameter) of the pyrene nanostructures from 1 to 50 or higher. Moreover, the dimensional variation was accompanied by changes of their optical properties. With the increase of the aspect ratio, the characteristic fluorescence of the isolated pyrene molecules was suppressed and concurrently replaced by the excimer emission of the pyrene nanostructures. A blue-shift was observed in the excimer emission peaks as the length of the nanorods increased. The growth mechanism and the change in optical properties of these pyrene nanostructures were discussed in detail. © 2005 American Chemical Society.

Citation Format(s)

Morphology-controllable synthesis of pyrene nanostructures and its morphology dependence of optical properties. / Zhang, Xiujuan; Zhang, Xiaohong; Shi, Wensheng et al.
In: Journal of Physical Chemistry B, Vol. 109, No. 40, 13.10.2005, p. 18777-18780.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review