Origins of selectivity in a colorimetric charge-transfer sensor for diols.
Bispyridyl hydrogen bonding receptor 1 forms colored charge transfer (CT) complexes with complementary phenols and naphthols. Despite its low association constants of approximately 10(1) M(-1), receptor 1 was highly selective forming CT complexes of varying color and intensity with different diol guests. The selectivity of 1 was correlated with the ability of its CT band to simultaneously yield information about the association constant and the electronic structure of the phenols and naphthols.
Rasberry
Roger D
RD
Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA.
Smith
Mark D
MD
Shimizu
Ken D
KD