title: A Peptoid-Based Fluorescent Sensor for Cyanide Detection.
abstract: Peptoids, N-substituted glycine oligomers, are versatile peptidomimetics with diverse biomedical applications. However, strategies to the development of novel fluorescent peptoids as chemical sensors have not been extensively explored, yet. Here, we synthesized a novel peptoid-based fluorescent probe in which a coumarin moiety was incorporated via copper(I)-catalyzed azide-alkyne cycloaddition reaction. Fluorescence of the newly generated coumarin-peptoid was dramatically quenched upon coordination of the Cu(2+) ion, and the resulting peptoid-Cu(2+) complex exhibited significant Turn-ON fluorescence following the addition of CN(-). The rapid and reversible response, combined with cyanide selectivity of the synthesized peptoid, reflects a multistep photo-process and supports its utility as a new type of CN(-) sensor.
authors.affiliation: College of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea. hihiboom@snu.ac.kr.
authors.forename: Bumhee
authors.initials: B
authors.lastname: Lim
authors.affiliation: College of Pharmacy, Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea. jyleeut@snu.ac.kr.
authors.forename: Jeeyeon
authors.initials: J
authors.lastname: Lee
mesh_terms: D003300:Copper / Q000737:chemistry; D003374:Coumarins / Q000737:chemistry; D003486:Cyanides / Q000737:chemistry*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D034444:Peptoids / Q000138:chemical synthesis / Q000737:chemistry*; D013057:Spectrum Analysis / Q000379:methods
chemical_list: D003374:Coumarins; D003486:Cyanides; D005456:Fluorescent Dyes; D034444:Peptoids; D003300:Copper; C030123:coumarin
keywords: cyanide sensor; fluorescence; peptoid