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显示 1-26 共 26 条结果 关于 "524018" 范围 论文
Fang Sun et al.
ACS nano, 9(3), 2668-2676 (2015-03-05)
Reliable surface-enhanced Raman scattering (SERS) based biosensing in complex media is impeded by nonspecific protein adsorptions. Because of the near-field effect of SERS, it is challenging to modify SERS-active substrates using conventional nonfouling materials without introducing interference from their SERS
Weng-I Katherine Chio et al.
The journal of physical chemistry. C, Nanomaterials and interfaces, 123(25), 15769-15776 (2019-07-16)
We demonstrate that the reproducibility of sensors for nitroaromatics based on surface-enhanced Raman spectroscopy (SERS) can be significantly improved via a hierarchical aqueous self-assembly approach mediated by the multifunctional macrocyclic molecule cucurbit[7]uril (CB[7]). Our approach is enabled by the novel
Hui Gu et al.
Analytical and bioanalytical chemistry, 412(15), 3727-3736 (2020-04-30)
Electrochemical detection of dopamine (DA) usually depends on electrochemical oxidation of DA. This conventional method can hardly provide sufficient sensitivity and selectivity in the determination of the cerebral DA down to nanomolar level, because the ability of DA to be
Yingying Xiong et al.
The Analyst, 144(15), 4545-4551 (2019-07-04)
Sialic acid (SA), usually located at the termini of glycan chains, is one of the most important monosaccharide blocks for glycosylation of proteins. The expression level of sialoglycoconjugates (SiaGCs) in cellular secretome is of great significance in diagnosis of tumor
Ya-Chuan Kao et al.
ACS nano, 14(2), 2542-2552 (2020-02-13)
Successful translation of laboratory-based surface-enhanced Raman scattering (SERS) platforms to clinical applications requires multiplex and ultratrace detection of small biomarker molecules from a complex biofluid. However, these biomarker molecules generally exhibit low Raman scattering cross sections and do not possess
Wanjun Zhang et al.
Journal of hazardous materials, 393, 122348-122348 (2020-03-07)
A multiplex surface-enhanced Raman scattering (SERS)-based lateral flow immunosensor was developed to determine six major mycotoxins in maize. Two characteristic Raman reporter molecules-5,5-dithiobis-2-nitrobenzoic acid (DTNB) and 4-mercaptobenzoic acid (MBA)-were used to label the synthesized Au@Ag core-shell nanoparticles for the preparation
Xiao Wang et al.
Talanta, 201, 119-125 (2019-05-28)
Glycated hemoglobin (HbA1c) represents the average glucose level over the past three months and has been considered as the most important biomarker for the diagnosis of Type Ⅱ diabetes (T2D). Herein, a label-free and quantitative electrochemical biosensor based on 4-mercaptophenylboronic
Song Wang et al.
ACS nano, 14(5), 6087-6096 (2020-05-07)
Noble metal nanostructures with plasmonic circular dichroism (PCD) have attracted interest, and a modulation of PCD is of great importance for their potential applications. Herein, we propose a supramolecular strategy for achieving dual thermal and photoswitchable PCD. When guanosine (G)
Weiman Zhao et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 234, 118258-118258 (2020-03-23)
Ginsenoside is a large family of triterpenoid saponins from Panax ginseng with various important biological functions. It is crucial to develop effective analytical approach for qualitative and quantitative analysis of ginsenosides. Herein, a dual boronate affinity nanoparticles-based plasmonic immunosandwich assay
Dongpo Xu et al.
Talanta, 166, 154-161 (2017-02-19)
In this work, the bifunctional Fe
Pir Muhammad et al.
Analytica chimica acta, 995, 34-42 (2017-11-12)
Determination of specific target compounds in agriculture food and natural plant products is essential for many purposes; however, it is often challenging due to the complexity of the sample matrices. Herein we present a new approach called plasmonic affinity sandwich
Sergey N Podoynitsyn et al.
Mikrochimica acta, 187(10), 566-566 (2020-09-16)
The surface-enhanced Raman spectroscopy (SERS) signal of a reporter on silver nanoparticles can be effectively gained by gradient electric field application. The external electric field initiates the dielectrophoresis of nanoparticles and their electrically induced dipole-dipole interaction. Owing to dielectrophoresis, the
Runmei Li et al.
Materials (Basel, Switzerland), 12(11) (2019-06-06)
The difference in gold nanoparticle (AuNPs) aggregation caused by different mixing orders of AuNPs, 4-mercaptophenylboronic acid (4-MPBA), and hydrogen peroxide (H2O2) has been scarcely reported. We have found that the color change of a ((4-MPBA + AuNPs) + H2O2) mixture
Song Zhang et al.
Biomaterials science, 8(13), 3741-3750 (2020-06-06)
Cytosolic protein delivery technique plays an important role in protein-based biotechnologies and therapeutics. However, the development of efficient nanocarriers for delivering cargo proteins into cytosols remains a continuing challenge due to the existence of multiple barriers. Here, we report an
Jiani Wang et al.
Biosensors & bioelectronics, 142, 111567-111567 (2019-08-11)
A delicate dual-readout immunosensor based on tetraphenylporphyrin-polymer dots (TPP-Pdots) with brilliant photoelectrochemical and photothermal performance was first successfully fabricated for the ultrasensitive detection of sialic acid (SA). Herein, TPP-Pdots with good biocompatibility, extraordinary light-harvesting ability and excellent photothermal conversion efficiency
Gregory Q Wallace et al.
Analytical and bioanalytical chemistry, 408(2), 609-618 (2015-11-02)
A nanoaggregate-on-mirror (NAOM) structure has been developed for molecular and biomolecular detection using surface-enhanced Raman spectroscopy (SERS). The smooth surface of the gold mirror allows for simple and homogeneous functionalization, while the introduction of the nanoaggregates enhances the Raman signal
Sensing ultra-trace dopamine by restoration of fluorescence on locally acidified gold nanoparticles.
Feichi Hu et al.
The Analyst, 144(15), 4477-4482 (2019-07-04)
An ultra-sensitive sensor was fabricated to measure dopamine through quenching and restoring FITC fluorescence by the competitive binding of dopamine and N-acetylneuraminic acid with mercaptophenylboronic acid anchored on the gold nanoparticles. Assessed by quantifying dopamine in human urine samples, it
Ying Wang et al.
Talanta, 182, 523-528 (2018-03-05)
In the present study, the effects of nine compounds on the luminol-O2 chemiluminescence (CL) reaction catalyzed by gold nanoparticles (Au NPs) were investigated. p-Iodophenol (PIP), known as a traditional enhancer in horseradish peroxidase (HRP)-catalyzed luminol-H2O2 CL reaction, exhibited the highest
Jingai Yang et al.
Journal of chromatography. A, 1513, 118-125 (2017-07-25)
In this work, a facile novel strategy is developed for the preparation of 4-mercapto-phenylboronic acid functionalized silica nanoparticle-graphene oxide composite (GO@MPBA) via thiol-yne click reaction. The morphology, structure and composition of the resulting GO@MPBA was characterized by transmission electron microscopy
Haimei Yang et al.
Mikrochimica acta, 185(11), 512-512 (2018-10-22)
A fluorescent array based on the use of saccharide-functionalized multicolored quantum dots (s-QDs) and of 4-mercaptophenylboronic acid-functionalized MoS2 nanosheets (PBA-MoS2) was constructed for multiple identification and quantitation of lectins and bacteria. In this array, the fluorescence of the s-QDs is quenched by
Haocheng Wu et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 214, 393-398 (2019-02-26)
A highly selective and sensitive colorimetric sensor based on aggregation-induced color change of 4-mercaptophenylboronic modified gold nanoparticles was designed for the determination of fluoride anion. The 4-mercaptophenylboronic modified gold nanoparticles were synthesized by a simple one-pot reaction. The aggregation process
Lulu Li et al.
Talanta, 205, 120116-120116 (2019-08-28)
2 In this paper, we developed a novel surface-enhanced Raman scattering (SERS) nanoprobe via the assembly of 3,4-diaminobenzene-thiol on the surface of porous SiO2-coated Au-Ag alloy nanoparticles and successfully applied this for ratiometric imaging analysis of NO in living cells.
Davide Rovati et al.
Nanomaterials (Basel, Switzerland), 9(9) (2019-09-12)
The adhesion and proliferation of bacteria on abiotic surfaces pose challenges in both health care and industrial applications. Gold nanostars (GNSs) monolayers grafted on glass have demonstrated to exert antibacterial action due to their photo-thermal features. Here, these GNS layers
Siyue Gao et al.
Journal of microbiological methods, 147, 69-75 (2018-03-20)
The existence of pathogenic bacteria in drinking water has been a threat to the safety of human well-being. Traditional methods to detect bacteria are standard plate counts or rapid methods such as ELISA and PCR. However, those methods can be
Shuangshuang Li et al.
Physical chemistry chemical physics : PCCP, 17(27), 17638-17645 (2015-06-18)
Molecular recognition based on specific intermolecular interactions is essential for the design of sensors with high selectivity. Herein, we report the surface-enhanced Raman scattering (SERS) behaviour of 4-mercaptophenyl boronic acid (MPBA) on self-assembled silver nanoparticles and its interaction with d-glucose.
Zhao Yu et al.
Mikrochimica acta, 185(7), 330-330 (2018-06-20)
A surface-enhanced Raman scattering (SERS) method has been developed to determine the concentration of trichloroethylene (TCE) in environmental water. Au-core/Ag-shell nanoparticles containing 4-mercaptophenylboronic acid (4-MPBA) between the core and shell are used as the SERS substrate. 4-MPBA serves as an
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