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Volumn 15, Issue 33, 2009, Pages 8319-8330

A cascade FRET-mediated ratiometric sensor for Cu2+ions based on dual fluorescent ligand-coated polymer nanoparticles

Author keywords

Copper chomosonsors; Fluorescence; Nanoparlieles; Raliomelric sensor; Self assembly; Through space interactions

Indexed keywords

COPPER COMPOUNDS; ENERGY TRANSFER; FLUORESCENCE; LIGANDS; NANOPARTICLES; SELF ASSEMBLY; SIGNAL TRANSDUCTION; SYNTHESIS (CHEMICAL);

EID: 68949136627     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200900475     Document Type: Article
Times cited : (76)

References (106)
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    • The percentage of dyes quenched at the plateau and the values of the Stern-Volmer quenching rate constants obtained in this work using NP suspensions diluted 1000 times in pure water are higher than the values obtained previously with DPA-doped NPs diluted 200 times in the presence of 1.5 wt, of the cationic surfactant DTAB, 20] These observed differences indicate that the sensor efficiency increases when the concentration of particles decreases and suggest that the adsorption of cationic surfactant molecules on the NP surface disfavors the binding of cupric ions probably via electrostatic repulsions
    • [20] These observed differences indicate that the sensor efficiency increases when the concentration of particles decreases and suggest that the adsorption of cationic surfactant molecules on the NP surface disfavors the binding of cupric ions probably via electrostatic repulsions.
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    • Similar exponential ratiometric variations are obtained for all the dual NPs prepared in this study, irrespective of the D and A loads. Plots for the whole series of dual NPs NP-DnA m are given in Figures S22-S26 in the Supporting Information
    • m are given in Figures S22-S26 in the Supporting Information.
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    • This method of decreasing the concentration of NPs is limited by the signal-to-noise ratio. The emission intensities of highly loaded NPs (NP-D 53 A23) allow at least a ten-fold dilution with our experimental set-up. The lowering of the detection limits by decreasing the NP concentration is currently under investigation
    • 23) allow at least a ten-fold dilution with our experimental set-up. The lowering of the detection limits by decreasing the NP concentration is currently under investigation.
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    • Linear range (LR) and limit of detection (LOD) of the most sensitive fluorescent copper chemosensors: neocuproine (LR: 16-97 nm); ascorbic acid and o-phenylenediamine (LR: 0-130 nm; LOD: 1 nm), 5-(3-fluoro-4- chlorophenylazo)-8-aminoquinoline (LR: 6-220 nm; LOD: 13 nm), europium tetracycline-hydrogen peroxide complex (LR: 195-1600 nm; LOD: 200 nm), lucifer yellow CH (LR: 1-100 nm; LOD: 0.3 nm).
    • Linear range (LR) and limit of detection (LOD) of the most sensitive fluorescent copper chemosensors: neocuproine (LR: 16-97 nm); ascorbic acid and o-phenylenediamine (LR: 0-130 nm; LOD: 1 nm), 5-(3-fluoro-4- chlorophenylazo)-8-aminoquinoline (LR: 6-220 nm; LOD: 13 nm), europium tetracycline-hydrogen peroxide complex (LR: 195-1600 nm; LOD: 200 nm), lucifer yellow CH (LR: 1-100 nm; LOD: 0.3 nm).
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.