Abstract: A highly stable fluorescent Ag nanoclusters (DMF/AgNCs) is prepared simply through reflux method with N,N-dimethylformamide (DMF) as reducer and stabilizer,and the quantum yield is 23.5%.The prepared DMF/AgNCs samples are characterized by HRTEM and fluorescence spectroscopy.The results indicate that small size AgNCs emits strong blue fluorescence possessing excellent water-solubility and photostability.After the addition of picric acid (PA),the charge transfer happens between the benzene ring of PA and DMF/AgNCs,which enables the fluorescence of DMF/AgNCs be efficiently quenched by PA.Therefore,a new,simple method for rapid and sensitive detection of PA is established.Under the optimized experimental conditions,this method shows a good linear relationship within the concentration range of 3.3×10-9-4.5×10-8 mol·L-1,the detection limit is 1.0×10-9 mol·L-1 and the correlation coefficient R2=0.993 8.This method has good selectivity for the detection of PA,which can be used for the detection of PA in environmental water samples.
戴兴露, 代蕊, 邓文清, 胡平越, 黄科, 熊小莉. DMF/AgNCs荧光探针检测苦味酸[J]. 现代化工, 2018, 38(11): 243-247.
DAI Xing-lu, DAI Rui, DENG Wen-qing, HU Ping-yue, HUANG Ke, XIONG Xiao-li. DMF/Ag nanoclusters fluorescent probe for detection of picric acid. Modern Chemical Industry, 2018, 38(11): 243-247.
[1] Demchenko A P.Advanced fluorescence reporters in chemistry and biology Ⅱ[M].Berlin:Springer,2010:307-332. [2] Lin C,Lee C,Hsieh J,et al.Synthesis of fluorescent metallic nanoclusters toward biomedical application:Recent progress and present challenges[J].J Med Biol Eng,2009,29(6):276-283. [3] Guo W W,Yuan J P,Wang E.Oligonucleotide-stabilized Ag nanoclusters as novel fluorescence probes for the highly selective and sensitive detection of the Hg2+ ion[J].Am Heart Journal,1982,104(2):289-302. [4] Xiong X L,Tang Y,Zhang L L,et al.A label-free fluorescent assay for free chlorine in drinking water based on protein-stabilized gold nanoclusters[J].Talanta,2015,132(132):790-795. [5] Vosch T,Antoku Y,Hsiang J C,et al.Strongly emissive individual DNA-encapsulated Ag nanoclusters as single-molecule fluorophores[J].P Natl Acad Sci USA,2007,104(31):12616-12621. [6] Yu J,Choi S,Richards C I,et al.Live cell surface labeling with fluorescent Ag nanocluster conjugates[J].Photochem Photobiol,2008,84(6):1435-1439. [7] Diezi,Ras R H A.Fluorescent silver nanoclusters[J].Nanoscale,2011,3(5):1963-1970. [8] Xavier L G,Spies C,Damn N,et al.Highly fluorescent silver nanoclusters stabilized by glutathione:A promising fluorescent label for bioimaging[J].Nano Res,2012,5(6):379-387. [9] Muhammeded M A H,Aideek F,Palui G,et al.Growth of in situ fimctionalized luminescent silver nanoclusters by direct reduction and size focusing[J].ACS Nano,2012,6:8950-8961. [10] Roy S,Baral A,Baneijee A.Tuning of silver cluster emission from blue to red using a bio-active peptide in water[J].ACS Appl Mater Inter,2014,6(6):4050-4056. [11] Yuan X,Tay Y Q,Dou X Y,et al.Glutathione-protected silver nanoclusters as cysteine-selective fluorometric and colorimetric probe[J].Anal Chem,2013,85(3):1913-1919. [12] Liu X Q,Wang R,Niazov-Eikan A,et al.Probing biocatalytic transformations with luminescent DNA/silver nanoclusters[J].Nano Lett,2013,13(1):309-314. [13] Yang X,Gan L F,Han L,et al.High-yield synthesis of silver nanoclusters protected by DNA monomers and DFT prediction of their photoluminescence properties[J].Angew Chem Int Edit,2013,52(7):2076-2080. [14] Holler R P M,Dulle M,Thoma S,et al.Protein-assisted assembly of modular 3D plasmonic raspberry-like core/satellite nanoclusters:CCorrelation of structure and optical properties[J].ACS Nano,2016,10(6):5740-5750. [15] Fang W,Dong Y,Liu F,et al.Horseradish peroxidase functionalized fluorescent gold nanoclusters for hydrogen peroxide sensing[J].Anal Chem,2011,83(4):1193-1196. [16] Borghei Y S,Hosseini M,Ganjali M R.Fluorescence based turn-on strategy for determination of microRNA-155 using DNA-templated copper nanoclusters[J].Microchim Acta,2017,184(8):2671-2677. [17] Apama R S,Anjali Devi J S,Sachidanandan P,et al.Polyethylene imine capped copper nanoclusters-fluorescent and colorimetric onsite sensor for the trace level detection of TNT[J].Sensor Actuat B,2018,254:811-819. [18] Liu S H,Lu R,Zhu J J.Highly fluorescent Ag nanoclusters:Microwave-assisted green synthesis and sensing[J].Chem Commun,2011,47(9):2661-2663. [19] Qu R,Li N B,Luo H Q.Polyethyleneimine-templated Ag nanoclusters:A new fluorescent and colorimetric platform for sensitive and selective sensing halide ions and high disturbance-tolerant recognitions of iodide and bromide in coexistence with chloride under condition of high ionic strength[J].Anal Chem,2012,84(23):10373-10379. [20] Lan J,Zhang P,Wang T T,et al.One-pot hydrothermal synthesis of orange fluorescent silver nanoclusters as a general probe for sulfides[J].Analyst,2014,139(13):3441-3445. [21] Wen T,Qu F,Li N B,et al.Polyethyleneimine-capped silver nanoclusters as a fluorescence probe for sensitive detection of hydrogen peroxide and glucose[J].Anal Chim Acta,2012,749(20):56-62. [22] Moghimi M,Arvand M,Javandel R,et al.Picrate ion determination using a potentiometric sensor immobilized in a graphite matrix[J].Sensor Actuat B,2005,107(1):296-302. [23] Vyskocil V,Navratil T,Danhel A,et al.Voltammetric determination of selected nitro compounds at a polished silver solid amalgam composite electrode[J].Electroanalysis,2011,23(1):129-139. [24] Steuckart C,Bergerpreiss E,Levsen K.Determination of explosives and their biodegradation products in contaminated soil and water from former ammunition plants by automated multiple development high-performance thin-layer chromatography[J].Anal Chem,1994,66(15):2570-2577. [25] Astratov M,Preiss A,Levsen K,et al.Identification of pollutants in ammunition hazardous waste sites by thermospray HPLC/MS[J].Int J Mass Spectrom,1997,167-168(6):481-502. [26] Kawasaki H,Yamamoto H,Fujimori H,et al.Stability of the DMF-protected Au nanoclusters:Photochemical,dispersion,and thermal properties[J].Langmuir,2010,26(8):5926-5933. [27] 熊小莉,唐艳,薛康,等.DMF保护的荧光银纳米簇的制备及其对Hg2+浓度的检测[J].发光学报,2016,37(1):117-123. [28] Kumar S,Bolan M D,Bigioni T P.Glutathione-stabilized magic-number silver cluster compounds[J].J Am Chem Soc,2010,132(38):13141-13143. [29] Liu J,Ren X G,Meng X W,et al.Sensitive and selective detection of Hg2+ and Cu2+ ions by fluorescent Ag nanoclusters synthesized via a hydrothermal method[J].Nanoscale,2013,5(20):10022-10028. [30] Zhang J R,Wang Z L,Qu F,et al.Polyethylenimine-capped silver nanoclusters as a fluorescence probe for highly sensitive detection of folic acid through a two-step electron-transfer process[J].J Agric Food Chem,2014;62(28):6592-6599. [31] Hemmateenejad B,Shakerizadeh-Shirazi F,Samari F.BSA-modified gold nanoclusters for sensing of folic acid[J].Sen Actuat B,2014,199(6):42-46. [32] Yan X,Li H,Cao B,et al.A highly sensitive dual-readout assay based on gold nanoclusters for folic acid detection[J].Microchim Acta,2015,182(7-8):1281-1288.