JOURNAL 828


Organic Communications
VOLUME & ISSUE
Year: 2017 Issue: 4 October-December
PAGES
p.304 - 313
STATISTICS
Viewed 1944 times.
AUTHORS
    Abha Naveen Kumar, Jayshree Ramkumar, S. Chandramouleeswaran and Sandip Kumar Nayak
PDF OF ARTICLE

GRAPHICAL ABSTRACT


ABSTRACT


This article describes one-step synthesis of a singly bridged biscalix[6]arene ( 2 ) and evaluation of its recognition properties towards alkali metal ions for the first time. Synthesis of 2 was accomplished through coupling of two 4-tert-butylcalix[6]arene units with one molecule of diethyleneglycol ditosylate. Both base and linker were found to play a role in the outcome of coupling reaction for the simple and efficient synthesis of 2 . Complexation ability of 2 was studied by liquid-liquid extraction using alkali metal (Na +, K +, Cs +) picrates. Carrier activity of 2 towards the facilitated transport of alkali metal ions across a bulk liquid membrane was also studied and the transport behaviour was mechanistically explained. The predominant role of an ion exchange action mechanism in the transport process was observed.

KEYWORDS
  • Biscalix[6]arene
  • singly bridged
  • bulk liquid membrane transport
  • alkali metal ions

SUPPORTING INFORMATION


Supporting Information
Download File 28-OC-1706-029-SI.pdf (656.61 KB)