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Title: Detection of tight ion-pair in some novel lipopathic oxidants from the monolayer at air-water interface
Authors: Mishra, B K
Sahu, Sandhyamayee
Pradhan, S
Patel, Sabita
Keywords: Solution chemistry;Ion pairs;Tight ion pairs;Water-air interface;Anchoring area;Monolayer properties
Issue Date: Nov-2009
Publisher: CSIR
Abstract: From the isotherms of surface pressure and area of cetyltrimethylammonium dichromate, permanganate and ceric nitrate, the anchoring area on water-air interface for each oxidant has been determined by spreading as Langmuir monolayer. The area/molecule of these oxidants with a common amphiphilic counterion, i.e., cetyltrimethylammonium ion, depends on the size of the anion counterpart indicating the existence of contact ion pair between CTA+ and the anionic group in aqueous medium. However, in aqueous acetic acid subphase, the decrease in area/molecule of cetyltrimethylammonium dichromate indicates dissociation of the constituting ions.
Page(s): 1527-1531
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.48A(11) [November 2009]

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