Intercalation of Perylenediimide Dye into LDH Clays: Enhancement of Photostability

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• 作者：Chanchal Chakraborty ; Kausik Dana ; Sudip Malik
• 刊名：Journal of Physical Chemistry C
• 出版年：2011
• 出版时间：February 10, 2011
• 年：2011
• 卷：115
• 期：5
• 页码：1996-2004
• 全文大小：1138K
• 年卷期：v.115,no.5(February 10, 2011)
• ISSN：1932-7455

文摘

Intercalation of perylenediimide dye into a host layer of layered double hydroxide (LDH) by the anion-exchange method is studied. N,N鈥?Bis(4-benzosulfonic acid)perylene-3,4,9,10-tetracarboxylbisimide disodium salt (PRSA) has been synthesized and intercalated into the perchlorate form of ZnAl-, CoAl-, and NiAl鈭扡DH. LDH composite with well-defined morphology has been prepared. XRPD and FT-IR investigation show successful intercalation of PRSA, and the interlayer distances are 32.5 脜 for ZnAl鈭扡DH鈭扨RSA, 30.0 脜 for CoAl鈭扡DH鈭扨RSA, and 31.2 脜 for NiAl鈭扡DH鈭扨RSA. These values support the presence of monolayer arrangement of intercalated PRSA molecules in the composite and also indicate vertical orientation of PRSA molecules with the basal plane of LDH. Photophysical properties of these intercalated composites have been measured with UV鈭抳is spectroscopy, photoluminescence spectroscopy, and confocal laser scanning microscopy. The results indicate that the PRSA molecules are stacked in J-type aggregation in the interlayer region. Intercalated PRSA molecules show enhanced thermal and photophysical stabilities.