Polymer-bound dirhodium tetracarboxylate films for fluorescent detection of nitric oxide.
A polymer-bound dirhodium complex, [{Rh2(O2CCH3)3(Ds-pip)}n(O2C-P)], was prepared via ligand exchange of [Rh2(O2CCH3)4] with the side chains of a methyl methacrylate/methacrylic acid copolymer (O2C-P) followed by axial coordination of the fluorophore, N-dansylpiperazine (Ds-pip). Emission from Ds-pip is quenched when coordinated to the dirhodium complex but can be restored upon displacement by analytes. Exposure of [{Rh2(O2CCH3)3(Ds-pip)}n(O2C-P)] films to aqueous nitric oxide (NO) evokes a 2.2-fold increase in integrated emission. The polymer matrix excludes potentially interfering analytes including reactive oxygen or nitrogen species, which cannot readily permeate the film.
Smith
Rhett C
RC
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Tennyson
Andrew G
AG
Lippard
Stephen J
SJ
D002264:Carboxylic Acids; D005453:Fluorescence; D009569:Nitric Oxide / Q000032:analysis*; D011108:Polymers; D012238:Rhodium
D002264:Carboxylic Acids; D011108:Polymers; D009569:Nitric Oxide; D012238:Rhodium