title: Ion and molecular recognition using aryl-ethynyl scaffolding.
abstract: The aryl-ethynyl linkage has been extensively employed in the construction of hosts for a variety of guests. Uses range from ion detection (e.g., of metal cations in the environment or industrial waste and of anions prevalent in nature), to molecular mimics for biological systems, and to applications targeting future safety issues (such as CO2 capture and indicators for the manufacture of chemical weapons). This Focus Review examines the utilization of the aryl-ethynyl linkage in engineering host molecules for a variety of different guests, and how the alkyne unit plays an integral part as both a rigid scaffolding section in host geometry design as well as a linker to allow conjugative communication between discrete π-electron systems.
authors.affiliation: Department of Chemistry & Biochemistry and Materials Science Institute, University of Oregon, Eugene, OR 97403-1253 (USA).
authors.forename: Chris L
authors.initials: CL
authors.lastname: Vonnegut
authors.forename: Blakely W
authors.initials: BW
authors.lastname: Tresca
authors.forename: Darren W
authors.initials: DW
authors.lastname: Johnson
authors.forename: Michael M
authors.initials: MM
authors.lastname: Haley
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002616:Chemical Engineering / Q000379:methods*; D060326:Chemistry Techniques, Synthetic; D015335:Molecular Probes; D015394:Molecular Structure
chemical_list: D000480:Alkynes; D015335:Molecular Probes
keywords: aryl-ethynyl; fluorescent probes; host-guest systems; sensors; supramolecular chemistry