title: 3-(Dicyanomethylidene)indan-1-one-Functionalized Calix[4]arene-Calix[4]pyrrole Hybrid: An Ion-Pair Sensor for Cesium Salts.
abstract: A chromogenic calix[4]arene-calix[4]pyrrole hybrid ion pair receptor bearing an indane substituent at a β-pyrrolic position has been prepared. On the basis of solution-phase UV-vis spectroscopic analysis and (1)H NMR spectroscopic studies carried out in 10% methanol in chloroform, receptor 1 is able to bind only cesium ion pairs (e.g., CsF, CsCl, and CsNO3) but not the constituent cesium cation (as its perchlorate salt) or the F(-), Cl(-), or NO3(-) anions (as the tetrabutylammonium salts). It thus displays rudimentary AND logic gate behavior. Receptor 1 shows a colorimetric response to cesium ion pairs under conditions of solid-liquid (nitrobenzene) and liquid-liquid (D2O-nitrobenzene-d5) extraction.
authors.affiliation: Department of Chemistry, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States.
authors.forename: Yerim
authors.initials: Y
authors.lastname: Yeon
authors.affiliation: Department of Chemistry, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States.
authors.forename: Soojung
authors.initials: S
authors.lastname: Leem
authors.affiliation: Department of Chemistry, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States.
authors.forename: Corin
authors.initials: C
authors.lastname: Wagen
authors.affiliation: Department of Chemistry, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States.
authors.forename: Vincent M
authors.initials: VM
authors.lastname: Lynch
authors.affiliation: Department of Chemistry and Research Institute of Natural Science, Gyeongsang National University , Jinju 660-701, Korea.
authors.forename: Sung Kuk
authors.initials: SK
authors.lastname: Kim
authors.affiliation: Department of Chemistry, The University of Texas at Austin , 105 East 24th Street, Stop A5300, Austin, Texas 78712-1224, United States.
authors.forename: Jonathan L
authors.initials: JL
authors.lastname: Sessler