Highly sensitive and selective fluorescent chemosensor for Ag+ based on a coumarin-Se2N chelating conjugate

• Published in: Chemical communications (Cambridge, England) Vol. 47; no. 8; pp. 2408 - 2410
• Main Authors: Huang, Shanshan, He, Song, Lu, Yan, Wei, Fangfang, Zeng, Xianshun, Zhao, Liancheng
• Format: Journal Article
• Language: English
• Published: CAMBRIDGE Royal Soc Chemistry 01.01.2011
• Subjects: Binding; Cations; Chelating; Chelating Agents - chemistry; chemical communication; Chemistry; Chemistry, Multidisciplinary; Conjugates; Coumarins - chemical synthesis; Coumarins - chemistry; detection limit; Electron transfer; Electron Transport; fluorescence; Organoselenium Compounds - chemical synthesis; Organoselenium Compounds - chemistry; Pathways; Physical Sciences; Quenching; Science & Technology; Selenium - chemistry; silver; Silver - analysis; Spectrometry, Fluorescence - methods; Tomography; SILVER ION; RECOGNITION; ESCHERICHIA-COLI; SENSOR MOLECULES; ELECTRODE; ADENINE; RECEPTORS; DERIVATIVES; NEUTRAL CARRIER; AQUEOUS-SOLUTION

A highly sensitive and selective fluorescent chemosensor SC1 for Ag+ based on a coumarin-Se2N chelating conjugate has been synthesized and characterized. Due to inhibiting a photoinduced electron transfer (PET) quenching pathway, a fluorescent enhancement factor of 4-fold is observed under the bindi...