物理化学学报 >> 2009, Vol. 25 >> Issue (03): 545-548.doi: 10.3866/PKU.WHXB20090324

研究论文 上一篇    下一篇

三聚苯撑乙烯/蒙脱土发光光谱的时间依赖性

张海全 张松 杨秀珍 张成波 翟静 李青山   

  1. 燕山大学, 亚稳材料制备技术与科学国家重点实验室, 河北 秦皇岛 066004; 燕山大学环境与化学工程学院, 河北 秦皇岛 066004
  • 收稿日期:2008-09-09 修回日期:2008-12-05 发布日期:2009-03-02
  • 通讯作者: 张海全 E-mail:hqzhang@ysu.edu.cn

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

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摘要：

用原位插层法制备了插层型的三聚苯撑乙烯/蒙脱土(TPV/MMT)纳米复合材料. 研究了新制备及在室温储存180天后的TPV/MMT纳米复合材料的荧光光谱及蒙脱土层间距的变化情况. 荧光光谱分析表明, 储存180天后, TPV/MMT纳米复合材料的最大发射峰由494 nm蓝移到438 nm, 半峰宽由77 nm增加到104 nm. X射线衍射结果表明, 与新制备的复合材料相比, 蒙脱土的层间距由1.52 nm减小到1.22 nm. 红外光谱分析表明, 室温储存180天后的三聚苯撑乙烯苯环的某些特征峰由1598 和1554 cm-1分别红移到1506和1462 cm-1. 依据相关实验和理论数据探讨了储存180 天前后TPV在蒙脱土中聚集态结构的变化方式.

关键词: 三聚苯撑乙烯, 蒙脱土, 聚集态, 光致发光, 层间距

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