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A Rational Approach to Selective Recognition of NH 4 + over K +
Author(s) -
Chin Jik,
Walsdorff Christian,
Stranix Brent,
Oh Jinho,
Chung Hyun Jei,
Park SuMoon,
Kim Kimoon
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990917)38:18<2756::aid-anie2756>3.0.co;2-6
Subject(s) - computer science
An ion‐selective electrode (ISE) based on receptor 1 is highly selective for binding NH 4 + over K + (lg K NH 4 + /K +=−2.6); the three imine nitrogen atoms in 1 are ideally positioned for hydrogen bonding with the tetrahedral NH 4 + ion. This selectivity is considerably greater than that found for commercial ISEs based on nonactin (lg K NH 4 + /K +=−1.0).