Paper Title:
Purple Photoluminescence from Banana-Shaped Molecules 1,3-Phenylene bis(4-methoxybenzylideneamine)
  Abstract

The optical absorption and photoluminescence spectra of banana-shaped molecules 1,3-phenylene bis(4-methoxybenzylideneamine) have been investigated with an ultraviolet-visible spectrometers and a spectrofluorometer, respectively. The optical characterizations indicate that the banana-shaped molecules exhibit strong absorptions in a broad range of 260-370 nm and that they can give off strong purple photoluminescence when excited by ultraviolet photons. Using Hückel tight-binding program, we have calculated the electronic structures of the banana-shaped molecules. In light of the calculated electronic structures, the origin of the purple photoluminescence is discussed, and our results have demonstrated that not only the lowest unoccupied molecular orbital and the highest occupied molecular orbital but also the localized energy levels of the lone pairs are responsible for the recorded purple photoluminescence.

  Info
Periodical
Key Engineering Materials (Volumes 428-429)
Edited by
Yuan Ming Huang
Pages
182-185
DOI
10.4028/www.scientific.net/KEM.428-429.182
Citation
Y. M. Huang, B. G. Zhai, "Purple Photoluminescence from Banana-Shaped Molecules 1,3-Phenylene bis(4-methoxybenzylideneamine)", Key Engineering Materials, Vols. 428-429, pp. 182-185, 2010
Online since
January 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Lan Li Chen, Bao Gai Zhai, Yuan Ming Huang
Abstract:We have investigated the photostability of an antiferroelectric banana-shaped liquid crystal 4-chloro-1,3-phenylene bis [4-(4-n-tetradecyl)...
194
Authors: Yuan Ming Huang, Bao Gai Zhai
Abstract:With the ultraviolet-visible spectrometer and photospectrometer, we have investigated the optical absorption and light emission from the...
212
Authors: Bao Gai Zhai, Yuan Ming Huang
Abstract:The electronic transitions in a classical banana-shaped liquid crystal 1,3-phenylene-bis [4-(4-octylphenylimino) methyl] benzoate have been...
317
Authors: Yuan Ming Huang, Qing Lan Ma, Bao Gai Zhai
Abstract:The effects of cyclic heating and cooling on the banana-phase growth behaviors of the prototype banana-shaped liquid crystal...
322
Authors: Yuan Ming Huang, Bao Gai Zhai, Qing Lan Ma
Abstract:We have investigated the optical absorption and photoluminescence (PL) of a classical banana-shaped liquid crystal,...
146