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Title: Adsorption characteristics and spectroscopic studies of 3,6-diaminoacridine adsorbed on clays
Authors: Ramaraj, R
Jeyanthy, D Rachel
Srinivasan, C
Issue Date: Dec-1991
Publisher: NISCAIR-CSIR, India
Abstract: Adsorption isotherms for the adsorption of 3,6-diaminoacridine on kaolin clay show that the dye molecules penetrate into the interlayer space of the aluminosilicate layer of the clay, while in the case of alumina, the dye molecules cover only the surface. Adsorption spectral studies of dye adsorbed on kaolin and bentonite at lower dye concentrations indicate that 3,6-diaminoacridine exists as a monomer in the adsorbed state. The emission of dye adsorbed on clays is completely quenched even in dilute solution. As the emission of free dye in aqueous solution is quenched by AI3+ ions (kq = 3.9 X 109 M-1 S-1), it is suggested that AI3+ of the aluminosilicate layer of the clay may also partly be responsible for the quenching of the adsorbed 3,6-diaminoacridine.
Page(s): 1044-1046
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.30A(12) [December 1991]

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