Chakraborty, Chanchal and Dana, Kausik and Malik, Sudip (2012) Lamination of cationic perylene in montmorillonite nano-gallery: induced J-aggregated nanostructure with enhanced photophysical and thermogravimetric aspect. Journal of Physical Chemistry C, 116 (39). pp. 21116-21123. ISSN 1932-7447

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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-vis 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.

Item Type: Article
Subjects: Structural Clay Products
Divisions: Advanced Clay & Traditional Ceramics
Depositing User: Bidhan Chaudhuri
Date Deposited: 01 Nov 2012 08:32
Last Modified: 01 Nov 2012 08:32

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