Lamination of Cationic Perylene in Montmorillonite Nano-Gallery: Induced J-Aggregated Nanostructure with Enhanced Photophysical and Thermogravimetric Aspect

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• 作者：Chanchal Chakraborty ; Kausik Dana ; Sudip Malik
• 刊名：The Journal of Physical Chemistry C
• 出版年：2012
• 出版时间：October 4, 2012
• 年：2012
• 卷：116
• 期：39
• 页码：21116-21123
• 全文大小：577K
• 年卷期：v.116,no.39(October 4, 2012)
• ISSN：1932-7455

文摘

Intercalation of perylenediimide dye into host layer of native Na-montmorillonite (Na-MMT) by anion exchange method is studied. Three cationic perylene diimides (PMC, PEC, and PBC) with different side chains have been synthesized and intercalated into Na-MMT to produce three composites PM-MMT, PE-MMT, and PB-MMT, respectively. Perylene-MMT composites with well-defined intercalated morphology have been prepared. XRPD and FT-IR and HR-TEM investigations show successful intercalation of cationic perylene and the interlayer distances are 0.74 nm for PM-MMT, 0.84 nm for PE-MMT, and 1.24 nm for PB-MMT. These values support the presence of monolayer arrangement of intercalated perylene dye molecules inclined within MMT nanogalleries. Photophysical properties of these intercalated composites have been measured with UV鈥搗is spectroscopy, photoluminescence spectroscopy, and fluorescence microscopy. The results indicate that the perylene dyes are stacked as J-type aggregation in the interlayer region. Intercalated perylene molecules show enhanced thermal and photophysical stability.