title: Synthesis of Air-Stable Cyclopentadienyl Fe(CO)2(Fp) Polymers by a Host-Guest Interaction of Cyclodextrin with Air-Sensitive Fp Pendant Groups.
abstract: Host-guest chemistry is used to address the challenge of the synthesis of air-stable polymers containing air-sensitive metal complexes. The complexation of the CpFe(CO)2(Fp) pendent group with cyclodextrin (CD) molecules created air-stable poly(Fp-methylstyrene) P(CD/FpMSt). This CD complexation resulted in dimerization of the adjacent Fp groups, which was characterized by NMR, FTIR, and cyclic voltammetry (CV) analyses. P(CD/FpMSt) was soluble in DMSO and remained stable even the solution was exposed to air for months. The host-guest chemistry accounted for the improved stability, because the Fp groups decomposed upon removal of the CD molecules using competing guest molecules. The CD-complexed polymer showed light-trigged properties, including CO release and antimicrobial activity. Host-guest chemistry of air-sensitive organometallic complexes is therefore a promising technique that can be used to broaden the scope of metal-containing polymers (MCPs) with processable novel functions.
authors.affiliation: Department of Chemistry, Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Waterloo, N2L 3G1, Canada.
authors.forename: Na
authors.initials: N
authors.lastname: Zhou
authors.affiliation: Department of Chemistry, Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Waterloo, N2L 3G1, Canada.|Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P.R. China.
authors.forename: Liao
authors.initials: L
authors.lastname: Peng
authors.affiliation: Department of Chemistry, Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Waterloo, N2L 3G1, Canada.
authors.forename: Shehan
authors.initials: S
authors.lastname: Salgado
authors.affiliation: Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P.R. China.
authors.forename: Jinying
authors.initials: J
authors.lastname: Yuan
authors.affiliation: Department of Chemistry, Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Waterloo, N2L 3G1, Canada.
authors.forename: Xiaosong
authors.identifier: 0000-0002-6415-4768
authors.initials: X
authors.lastname: Wang
keywords: cyclodextrin; enhanced air stability; metal-containing polymers; organometallic complexes; photolysis