Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (03): 545-548.doi: 10.3866/PKU.WHXB20090324

• ARTICLE • Previous Articles     Next Articles

Deposited Time Dependence of Luminescence Spectra of Trimeric Phenylenevinylene/Montmorillonite

ZHANG Hai-Quan, ZHANG Song, YANG Xiu-Zhen, ZHANG Cheng-Bo, ZHAI Jing, LI Qing-Shan   

  1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei Province, P. R. China; College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, Hebei Province, P. R. China
  • Received:2008-09-09 Revised:2008-12-05 Published:2009-03-02
  • Contact: ZHANG Hai-Quan E-mail:hqzhang@ysu.edu.cn

Abstract:

The incorporation of trimeric phenylenevinylene (TPV) into the interlayer space of montmorillonite (MMT) was performed by an in-situ intercalation method. Effects of storage time on the photoluminescence spectra of TPV/MMT were studied. Photoluminescence analysis of the TPV/MMT composite indicated that the maximal emission band changed from 494 nm (the as-prepared sample) to 438 nm (the sample deposited at room temperature for 180 days). The intrinsic gallery of MMT decreased from 1.52 to 1.22 nm as the storage time increased as shown in X-ray diffraction (XRD) patterns. In IRspectra of TPV/MMT the two bands of the aromatic ring (at 1598 and 1554 cm-1) shifted to lower wavenumbers (at 1506 and 1462 cm-1), respectively, after preservation at room temperature for 180 days. The variational aggregation of the TPV molecule in MMT is discussed according to theoretical and experimental data.

Key words: Trimeric phenylenevinlyene, Montmorillonite, Aggregation, Photoluminescence, Intrinsic gallery

MSC2000: 

  • O644