Determination of silver(I) ion based on the aggregation of gold nanoparticles caused by silver-specific DNA, and its effect on the fluorescence of Rhodamine B

Zhan, Shenshan; Xu, Hanchu; Zhan, Xuejia; Wu, Yuangen; Wang, Lumei; Lv, Jing; Zhou, Pei

doi:10.1007/s00604-015-1462-3

Cited by 33 publications

(9 citation statements)

References 51 publications

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“…When the excitation and emission are controlled in given wavelengths, biosensing detections can be achieved via the measurement of fluorescence intensity. [98][99][100] In general, the fluorophore concentration that is in certain value would show a significant influence on fluorescence intensity with a proportional parameter. Huang et al prepared a multi-stopband photonic crystals (PC) microchip on a substrate with patterned hydrophilicity-hydrophobicity ( Figure 5A-D), 101 realizing a universal and high-performance multi-analyte discriminant testing method.…”

Section: Fluorescencementioning

confidence: 99%

“…During a light absorption, initial electronic in a molecule is excited to induce an emission phenomenon, which is called fluorescence. When the excitation and emission are controlled in given wavelengths, biosensing detections can be achieved via the measurement of fluorescence intensity 98‐100 . In general, the fluorophore concentration that is in certain value would show a significant influence on fluorescence intensity with a proportional parameter.…”

Section: Bioinspired Superwetting Surfaces For Biosensingmentioning

confidence: 99%

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Bioinspired superwetting surfaces for biosensing

Zhu

Huang

Lou

et al. 2020

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Inspired by nature, scientists and researchers have studied the wetting behaviors on various creatures and mimicked their structures to fabricate diverse functional superwetting materials. As one kind of emerging application, the bioinspired superwettable surfaces used for biosensing have been aroused wide interests. In this review, we summarized the recent developments of bioinspired superwettable surfaces in the field of biosensing. In the first part, superwettable creatures in nature, namely, superhydrophobic self-cleaning lotus leaf, high-adhesion superhydrophobic rose petal, amphiphobic springtail, patterned wetting desert beetles, slippery pitcher plant, were introduced. In sequence, we successively described the special wetting models of superhydrophobicity, superamphiphobicity, responsive wettability, patterned wettability, and slipperiness. Then, biosensing applications based on the respective patterned wettable, superhydrophobic, responsive wettable, and slippery substrates that were combined with the common detection approaches (colorimetry, fluorescence, surface-enhanced Raman scattering (SERS), electrochemistry) were shown in detailed. At last, an insight of remaining challenges and future development for bioinspired superwetting materials applied in biosensing was provided.

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Section: Fluorescencementioning

confidence: 99%

Section: Bioinspired Superwetting Surfaces For Biosensingmentioning

confidence: 99%

Bioinspired superwetting surfaces for biosensing

Zhu

Huang

Lou

et al. 2020

VIEW

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“…Respectable advantages such as high accuracy and sensitivity were shown by these techniques, however, most of them need expensive sophisticated instruments, complicated sample pretreatment and well-trained personnel, failing to meet the requirement of portable and easy-to-use detection (Wei et al, 2014;Zhan et al, 2015a). Recently, novel methods based on FNAs have shown great potential in heavy metal ions detection due to their low-cost and easy to operate merits (Zhan et al, 2015b).…”

Section: Introductionmentioning

confidence: 98%

A mini-review on functional nucleic acids-based heavy metal ion detection

Zhan

Wang

et al. 2016

Biosensors and Bioelectronics

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148

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“…26 In addition, since the obvious overlap between the absorption spectrum of AuNPs and the emission spectra of dyes such as rhodamine B (RhoB) and rhodamine 6G, AuNPs have a significant effect on the photoluminescence of these dyes and are used in some fluorescence aptasensors as "super quencher". 27 RhoB is a synthetic dye with strong fluorescence, light stability and water solubility. 28 Study has shown that when RhoB is absorbed on the surface of AuNPs through electrostatic interactions, dispersed AuNPs can greatly quench the fluorescence of RhoB, while aggregated AuNPs exhibit weak quenching ability.…”

Section: Introductionmentioning

confidence: 99%

An Ultrasensitive Label-Free Fluorescent Aptasensor Platform for Detection of Sulfamethazine

Wang¹,

Yan²,

Kou³

et al. 2021

IJN

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Purpose: Sulfamethazine (SMZ) exposed in the environment can enter the human body through the food chain and pose a serious threat to human health. Therefore, it is important to develop a rapid and sensitive method for detecting SMZ in environmental samples. In order to fastly and quantitatively detect SMZ in environmental samples, we developed a label-free fluorescent aptasensor based on specific aptamer (SMZ1S) and fluorescence resonance energy transfer (FRET) between gold nanoparticles (AuNPs) and rhodamine B (RhoB). Methods: In the absence of SMZ, SMZ1S was adsorbed on the surface of AuNPs, which led to dispersion of the AuNPs in high concentration saline solution, thus effectively quenching the fluorescence of RhoB. With the increase of the SMZ concentration, the specific binding of SMZ1S and SMZ led to the aggregation of AuNPs in the presence of NaCl, which reduced the quenching of RhoB fluorescence and increased the fluorescence intensity. The sensitivity and linearity curve of the label-free fluorescent aptasensor were determined with different concentrations of sulfamethazine standard solutions. The specificity of this fluorescent aptasensor was determined by replacing sulfamethazine with different antibiotics. In addition, the actual water and soil samples were spiked and recovered. Results: Under optimized conditions, the proposed fluorescent aptasensor demonstrated a good linear detection of SMZ in binding buffer from 1.25 ng mL −1 to 40 ng mL −1 and the limit of detection was 0.82 ng mL −1 . The spiked recoveries for SMZ were 94.4% to 108.8% with a relative standard deviation of 1.8-10.3% in water and soil samples, respectively. Conclusion:The label-free fluorescent aptasensor investigated in the current study is a promising tool to detect and quantify SMZ in water and soil samples.

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Determination of silver(I) ion based on the aggregation of gold nanoparticles caused by silver-specific DNA, and its effect on the fluorescence of Rhodamine B

Cited by 33 publications

References 51 publications

Bioinspired superwetting surfaces for biosensing

Bioinspired superwetting surfaces for biosensing

A mini-review on functional nucleic acids-based heavy metal ion detection

An Ultrasensitive Label-Free Fluorescent Aptasensor Platform for Detection of Sulfamethazine

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