title: Hybrid silver nanoparticle/conjugated polyelectrolyte nanocomposites exhibiting controllable metal-enhanced fluorescence.
abstract: Metal-enhanced fluorescence of conjugated polyelectrolytes (CPs) is realized using a simple, green hybrid Ag nanocomposite film. Ag nanoparticles (Ag NPs) are pre-prepared by sodium citrate reduction and incorporated into agarose by mixing to form an Ag-containing agarose film (Ag@agarose). Through variation of the amount of Ag NPs in the Ag@agarose film as well as the thickness of the interlayer between CPs and the Ag@agarose film prepared of layer-by-layer assembly of chitosan and sodium alginate, a maximum 8.5-fold increase in the fluorescence of CPs is obtained. After introducing tyrosinase, this system also can be used to detect phenolic compounds with high sensitivity and good visualization under ultraviolet light.
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
authors.forename: Fang
authors.initials: F
authors.lastname: He
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
authors.forename: Xi
authors.initials: X
authors.lastname: Zhu
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
authors.forename: Fu
authors.initials: F
authors.lastname: Tang
authors.affiliation: State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
authors.forename: Lidong
authors.initials: L
authors.lastname: Li
mesh_terms: D000464:Alginates / Q000737:chemistry; D048271:Chitosan / Q000737:chemistry; D002951:Citrates / Q000737:chemistry; D005453:Fluorescence; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D014442:Monophenol Monooxygenase / Q000737:chemistry; D053761:Nanocomposites / Q000737:chemistry*; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis*; D011094:Polyethyleneimine / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D011809:Quinones / Q000737:chemistry; D012685:Sepharose / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D000077559:Sodium Citrate; D012996:Solutions; D013050:Spectrometry, Fluorescence / Q000379:methods*; D014466:Ultraviolet Rays
chemical_list: D000464:Alginates; D002951:Citrates; D006603:Hexuronic Acids; D010636:Phenols; D000644:Quaternary Ammonium Compounds; D011809:Quinones; D012996:Solutions; D000077559:Sodium Citrate; D012834:Silver; D020723:Glucuronic Acid; D011094:Polyethyleneimine; D012685:Sepharose; D048271:Chitosan; D014442:Monophenol Monooxygenase