1
|
Ghamsari M, Orouji A, Hormozi-Nezhad MR. Fast and Facile Etching of Gold Nanorods by N-Halosuccinimides: Toward Multicolorimetric Identification and Quantification of 20 Natural Amino Acids. Anal Chem 2023; 95:15985-15993. [PMID: 37791823 DOI: 10.1021/acs.analchem.3c03106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Gold nanorods (AuNRs) have recently become fascinating chromophores in the field of colorimetric sensing because of their eye-catching rainbow colors along with the high dimensionality of their optical profile. The etching of AuNRs using an analyte-sensitive oxidizing agent is particularly an attractive tool not only for adjusting their plasmonic behavior through altering their aspect ratio but also for correlating the observed signal with the identity and concentration of the analyte. However, the deployment of this strategy in the field of sensing has been seriously hindered by various factors ranging from slow etching kinetics and the need for nonambient temperatures to low degrees of controllability along with the high toxicity of the etchants. To resolve these challenges, the present study aims to introduce the outstanding potentials of two inexpensive mild oxidants comprising N-bromosuccinimide (NBS) and N-chlorosuccinimide (NCS) in the highly fast and controllable etching of AuNRs at room temperature. By controlling the concentration of the etchant and the pH of the medium, the longitudinal and transversal peaks could be well adjusted with nanometer precision. In an attempt to elucidate the etching mechanism, the effects of various parameters including the etchant concentration and pH, as well as the kinetics of the etching process were thoroughly investigated. After all, the capability of NBS in decarboxylating the amino acids was further exploited in the design of an all-inclusive multicolorimetric sensor array based on the etching of AuNRs for the sensitive quantification and highly accurate discrimination of all 20 amino acids in the micromolar range. To this end, the acquired data set was analyzed by two machine learning techniques including partial least-squares regression (PLSR) and linear discriminant analysis (LDA). The versatility of N-halosuccinimide reactions with various categories of organic compounds underlies ample opportunities for the design of diverse multicolorimetric sensors, further glamorizing the prospect of this approach.
Collapse
Affiliation(s)
- Mahdi Ghamsari
- Department of Chemistry, Sharif University of Technology, Tehran, 11155-9516, Iran
| | - Afsaneh Orouji
- Department of Chemistry, Sharif University of Technology, Tehran, 11155-9516, Iran
| | - Mohammad Reza Hormozi-Nezhad
- Department of Chemistry, Sharif University of Technology, Tehran, 11155-9516, Iran
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, Tehran, 11155-9516, Iran
| |
Collapse
|
2
|
Multicolor colorimetric assay for copper ion detection based on the etching of gold nanorods. Mikrochim Acta 2022; 189:420. [PMID: 36251083 DOI: 10.1007/s00604-022-05515-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 09/28/2022] [Indexed: 10/24/2022]
Abstract
An effective, selective, and multicolor colorimetric assay for Cu2+ detection based on the regulation of peroxidase-like nanozyme-mediated etching of gold nanorods (Au NRs) is proposed. Cu2+-creatinine complex is selected as the nanozyme that exhibits excellent peroxidase-like activity even in the case of low concentration of Cu2+, which can catalyze 3,3,5,5-tetramethylbenzidine (TMB) to produce oxidized TMB (TMB+) in the presence of hydrogen peroxide, and TMB+ is oxidized to generate TMB2+ after adding H+, and the TMB2+ can etch Au NRs. The determination of Cu2+ is achieved based on the blue shift of the longitudinal localized surface plasmon resonance peak of Au NRs. Under the optimal conditions, the developed colorimetric assay exhibits high sensitivity for the detection of Cu2+ (limit of detection is 0.034 μM) with a wide linear range of 0.05-4.0 μM (R2 = 0.987). The solution shows a rainbow-like color in response to the increase of Cu2+ concentration, which can realize the semi-quantitative detection of Cu2+ by naked eyes. In addition, the developed method exhibits excellent selectivity for Cu2+-detection. The established method was used for the determination of Cu2+ in lake water, soil, and normal human serum with satisfactory recovery of spiked samples.
Collapse
|
3
|
Zhou HY, Zhang H, Peng LJ, Zhang WY, Tian T, Yang FQ. L-cysteine-regulated in situ formation of Prussian blue/Turnbull’s blue nanoparticles as the colorimetric probe for the detection of copper ion. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
4
|
Gold nanorods etching as a powerful signaling process for plasmonic multicolorimetric chemo-/biosensors: Strategies and applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213934] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
5
|
dos Santos GC, Rodrigues JL, Moreno VF, da Silva-Filho LC. Environmental effects in nitroquinoline derivatives solutions: Solvatochromism, acid-base effect and ion-sensor investigation. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
6
|
Fang B, Xu S, Huang Y, Su F, Huang Z, Fang H, Peng J, Xiong Y, Lai W. Gold nanorods etching-based plasmonic immunoassay for qualitative and quantitative detection of aflatoxin M1 in milk. Food Chem 2020; 329:127160. [DOI: 10.1016/j.foodchem.2020.127160] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 05/21/2020] [Accepted: 05/25/2020] [Indexed: 12/15/2022]
|
7
|
Wang Q, Peng R, Wang Y, Zhu S, Yan X, Lei Y, Sun Y, He H, Luo L. Sequential colorimetric sensing of cupric and mercuric ions by regulating the etching process of triangular gold nanoplates. Mikrochim Acta 2020; 187:205. [PMID: 32152683 DOI: 10.1007/s00604-020-4176-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/18/2020] [Indexed: 01/22/2023]
Abstract
A triangular gold nanoplate (AuNPL)-based colorimetric assay is presented for ultrasensitive determination of cupric ions (Cu2+) and mercuric ions (Hg2+) in sequence. AuNPLs were found to be etched efficiently when producing triiodide ions (I3-) by a redox reaction between Cu2+ and iodide ions (I-), leading to a change of the shape of AuNPLs from triangular to sphere along with a color change from blue to pink. In the presence of Hg2+ the etching of AuNPLs was suppressed due to the consumption of I- by the formation of HgI2. With an increase of the concentration of the Hg2+ a transformation from sphere to triangular in the shape of AuNPLs occurred with a color change from pink to blue. The evolution of AuNPLs from etching to anti-etching state by sequential addition of Cu2+ and Hg2+ was accompanied with color variations and band shifts of localized surface plasmon resonance (LSPR), allowing for visual and spectroscopic determination of Cu2+ and Hg2+ successively within 15 min. In the range 0.01-1.5 μM for Cu2+ and 0.02-3.0 μM for Hg2+, the linear relationship between the band shift values and the target ions concentration was found good (R2 > 0.996). The limit of detections (3S/k) was 19 nM for Cu2+ and 9 nM for Hg2+, respectively. The lowest visual estimation concentration was 80 nM for both Cu2+ and Hg2+ through the distinguishable color changes. This system exhibited desirable selectivity for Cu2+ and Hg2+ over other common ions tested. The method has been successfully applied to sequential determination of Cu2+ and Hg2+ in real water and food samples. Graphical abstract Scheme 1 Schematic illustration for sequential detection of Cu2+ and Hg2+ based on etching of AuNPLs.
Collapse
Affiliation(s)
- Qian Wang
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China
| | - Ruifeng Peng
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China
| | - Yishan Wang
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China
| | - Shouzhe Zhu
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China
| | - Xiaoxia Yan
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China
| | - Yunyi Lei
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China
| | - Youbao Sun
- Shimadzu (China) Co., Ltd., Shanghai, 200052, People's Republic of China
| | - Haibo He
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China.
| | - Liqiang Luo
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai, 200444, People's Republic of China.
| |
Collapse
|
8
|
Daniyal WMEMM, Fen YW, Abdullah J, Sadrolhosseini AR, Saleviter S, Omar NAS. Exploration of surface plasmon resonance for sensing copper ion based on nanocrystalline cellulose-modified thin film. OPTICS EXPRESS 2018; 26:34880-34893. [PMID: 30650905 DOI: 10.1364/oe.26.034880] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 11/20/2018] [Indexed: 06/09/2023]
Abstract
In this research, surface plasmon resonance (SPR) spectroscopy was used for sensing copper ion by combining the SPR with nanocrystalline cellulose modified by hexadecyltrimethylammonium bromide and graphene oxide composite (CTA-NCC/GO) thin film. The binding of Cu2+ on CTA-NCC/GO thin film was monitored by using SPR spectroscopy. By using the obtained SPR curve, detection range, binding affinity, sensitivity, full width at half maximum (FWHM), data accuracy (DA), and signal-to-noise ratio (SNR) have been calculated. The results showed that the sensor detection range was 0.01 until 0.5 ppm, and that it reached a saturation value. Moreover, the resonance angle shift followed the Langmuir isotherm model with a binding affinity constant of 4.075 × 103 M-1. A high sensitivity of 3.271° ppm-1 also was obtained for low Cu2+ concentration ranged from 0.01 to 0.1 ppm. For the FWHM, the lowest value calculated was at 0.08 and 0.1 ppm, which is 3.35°. The DA of the SPR signal consecutively highest at 0.08 and 0.1 ppm. Besides that, the SNR of the SPR signal increases with the Cu2+ concentrations. The CTA-NCC/GO thin film morphological properties were also studied by using atomic force microscopy. The rms roughness values, which were obtained before and after in contact with Cu2+, were 3.51 nm and 2.46 nm, respectively.
Collapse
|
9
|
Yang X, Jia Z, Cheng X, Luo N, Choi MMF. Synthesis of N-acetyl-l-cysteine capped Mn:doped CdS quantum dots for quantitative detection of copper ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 199:455-461. [PMID: 29655131 DOI: 10.1016/j.saa.2018.04.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 03/31/2018] [Accepted: 04/04/2018] [Indexed: 06/08/2023]
Abstract
In this work, a new assembled copper ions sensor based on the Mn metal-enhanced fluorescence of N-acetyl-l-cysteine protected CdS quantum dots (NAC-Mn:CdS QDs) was developed. The NAC and Mn:CdS QDs nanoparticles were assembled into NAC-Mn:CdS QDs complexes through the formation of CdS and MnS bonds. As compared to NAC capped CdS QDs, higher fluorescence quantum yields of NAC-Mn:CdS QDs was observed, which is attributed to the surface plasmon resonance of Mn metal. In addition, the fluorescence intensity of as-formed complexes weakened in the presence of copper ions. The decrease in fluorescence intensity presented a linear relationship with copper ions concentration in the range from 0.16-3.36μM with a detection limit of 0.041μM . The characterization of as-formed QDs was analyzed by photoluminescence (PL), ultra violet-visible (UV-vis), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and energy dispersive spectroscopy (EDS) respectively. Furthermore, the recoveries and relative standard deviations of Cu2+ spiked in real water samples for the intra-day and inter-day analyses were 88.20-117.90, 95.20-109.90, 0.80-5.80 and 1.20-3.20%, respectively. Such a metal-enhanced QDs fluorescence system may have promising application in chemical and biological sensors.
Collapse
Affiliation(s)
- Xiupei Yang
- College of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637000, PR China.
| | - Zhihui Jia
- College of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637000, PR China
| | - Xiumei Cheng
- College of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637000, PR China
| | - Na Luo
- College of Chemistry and Chemical Engineering, Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637000, PR China
| | - Martin M F Choi
- Department of Chemistry, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Hong Kong SAR, PR China.
| |
Collapse
|
10
|
Rasouli Z, Ghavami R. Enhanced Sensitivity to Detection Nanomolar Level of Cu 2+ Compared to Spectrophotometry Method by Functionalized Gold Nanoparticles: Design of Sensor Assisted by Exploiting First-order Data with Chemometrics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:336-344. [PMID: 29055278 DOI: 10.1016/j.saa.2017.10.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 09/24/2017] [Accepted: 10/09/2017] [Indexed: 06/07/2023]
Abstract
A simple, sensitive and efficient colorimetric assay platform for the determination of Cu2+ was proposed with the aim of developing sensitive detection based on the aggregation of AuNPs in presence of a histamine H2-receptor antagonist (famotidine, FAM) as recognition site. This study is the first to demonstrate that the molar extinction coefficients of the complexes formed by FAM and Cu2+ are very low (by analyzing the chemometrics methods on the first order data arising from different metal to ligand ratio method), leading to the undesirable sensitivity of FAM-based assays. To resolve the problem of low sensitivity, the colorimetry method based on the Cu2+-induced aggregation of AuNPs functionalized with FAM was introduced. This procedure is accompanied by a color change from bright red to blue which can be observed with the naked eyes. Detection sensitivity obtained by the developed method increased about 100 fold compared with the spectrophotometry method. This sensor exhibited a good linear relation between the absorbance ratios at 670 to 520nm (A670/520) and the concentration in the range 2-110nM with LOD=0.76nM. The satisfactory analytical performance of the proposed sensor facilitates the development of simple and affordable UV-Vis chemosensors for environmental applications.
Collapse
Affiliation(s)
- Zolaikha Rasouli
- Department of Chemistry, Faculty of Science, University of Kurdistan, P. O. Box 416, Sanandaj, Iran
| | - Raouf Ghavami
- Department of Chemistry, Faculty of Science, University of Kurdistan, P. O. Box 416, Sanandaj, Iran.
| |
Collapse
|
11
|
Abstract
Colorimetric detection of target analytes with high specificity and sensitivity is of fundamental importance to clinical and personalized point-of-care diagnostics. Because of their extraordinary optical properties, plasmonic nanomaterials have been introduced into colorimetric sensing systems, which provide significantly improved sensitivity in various biosensing applications. Here we review the recent progress on these plasmonic nanoparticles-based colorimetric nanosensors for ultrasensitive molecular diagnostics. According to their different colorimetric signal generation mechanisms, these plasmonic nanosensors are classified into two categories: (1) interparticle distance-dependent colorimetric assay based on target-induced forming cross-linking assembly/aggregate of plasmonic nanoparticles; and (2) size/morphology-dependent colorimetric assay by target-controlled growth/etching of the plasmonic nanoparticles. The sensing fundamentals and cutting-edge applications will be provided for each of them, particularly focusing on signal generation and/or amplification mechanisms that realize ultrasensitive molecular detection. Finally, we also discuss the challenge and give our future perspective in this emerging field.
Collapse
Affiliation(s)
- Longhua Tang
- State
Key Laboratory of Modern Optical Instrumentation, College of Optical
Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jinghong Li
- Department
of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry and
Chemical Biology, Tsinghua University, Beijing 100084, China
| |
Collapse
|
12
|
Colorimetric sensors for rapid detection of various analytes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:1231-1245. [PMID: 28575962 DOI: 10.1016/j.msec.2017.05.018] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 03/23/2017] [Accepted: 05/04/2017] [Indexed: 01/14/2023]
Abstract
Sensor technology for the rapid detection of the analytes with high sensitivity and selectivity has several challenges. Despite the challenges, colorimetric sensors have been widely accepted for its high sensitive and selective response towards various analytes. In this review, colorimetric sensors for the detection of biomolecules like protein, DNA, pathogen and chemical compounds like heavy metal ions, toxic gases and organic compounds have been elaborately discussed. The visible sensing mechanism based on Surface Plasmon Resonance (SPR) using metal nanoparticles like Au, Ag, thin film interference using SiO2 and colorimetric array-based technique have been highlighted. The optical property of metal nanoparticles enables a visual color change during its interaction with the analytes owing to the dispersion and aggregation of nanoparticles. Recently, colorimetric changes using silica substrate for detection of protein and small molecules by thin film interference as a visible sensing mechanism has been developed without the usage of fluorescent or radioisotopes labels. Multilayer of biomaterials were used as a platform where reflection and interference of scattering light occur due to which color change happens leading to rapid sensing. Colorimetric array-based technique for the detection of organic compounds using chemoresponsive dyes has also been focused wherein the interaction of the analytes with the substrate coated with chemoresponsive dyes gives colorimetric change.
Collapse
|
13
|
Selective and sensitive determination of copper ions in soft drink based on high catalysis of hemin–graphene hybrid nanosheets coupled with enzyme inhibitions. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2016. [DOI: 10.1007/s13738-016-0910-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
14
|
Localized surface plasmon resonance of gold nanorods and assemblies in the view of biomedical analysis. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.03.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
15
|
Alex SA, Chandrasekaran N, Mukherjee A. State-of-the-art strategies for the colorimetric detection of heavy metals using gold nanorods based on aspect ratio reduction. ANALYTICAL METHODS 2016; 8:2131-2137. [DOI: 10.1039/c5ay03428k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Current colorimetric detection techniques for metals using gold nanorods based on variations in the aspect ratio have been summarized.
Collapse
Affiliation(s)
- Sruthi Ann Alex
- Centre for Nanobiotechnology
- VIT University
- Vellore-632014
- India
| | | | | |
Collapse
|
16
|
Chaiyo S, Siangproh W, Apilux A, Chailapakul O. Highly selective and sensitive paper-based colorimetric sensor using thiosulfate catalytic etching of silver nanoplates for trace determination of copper ions. Anal Chim Acta 2015; 866:75-83. [PMID: 25732695 DOI: 10.1016/j.aca.2015.01.042] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/19/2015] [Accepted: 01/28/2015] [Indexed: 11/17/2022]
Abstract
A novel, highly selective and sensitive paper-based colorimetric sensor for trace determination of copper (Cu(2+)) ions was developed. The measurement is based on the catalytic etching of silver nanoplates (AgNPls) by thiosulfate (S2O3(2-)). Upon the addition of Cu(2+) to the ammonium buffer at pH 11, the absorption peak intensity of AuNPls/S2O3(2-) at 522 nm decreased and the pinkish violet AuNPls became clear in color as visible to the naked eye. This assay provides highly sensitive and selective detection of Cu(2+) over other metal ions (K(+), Cr(3+), Cd(2+), Zn(2+), As(3+), Mn(2+), Co(2+), Pb(2+), Al(3+), Ni(2+), Fe(3+), Mg(2+), Hg(2+) and Bi(3+)). A paper-based colorimetric sensor was then developed for the simple and rapid determination of Cu(2+) using the catalytic etching of AgNPls. Under optimized conditions, the modified AgNPls coated at the test zone of the devices immediately changes in color in the presence of Cu(2+). The limit of detection (LOD) was found to be 1.0 ng mL(-1) by visual detection. For semi-quantitative measurement with image processing, the method detected Cu(2+) in the range of 0.5-200 ng mL(-1)(R(2)=0.9974) with an LOD of 0.3 ng mL(-1). The proposed method was successfully applied to detect Cu(2+) in the wide range of real samples including water, food, and blood. The results were in good agreement according to a paired t-test with results from inductively coupled plasma-optical emission spectrometry (ICP-OES).
Collapse
Affiliation(s)
- Sudkate Chaiyo
- Electrochemistry and Optical Spectroscopy Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Weena Siangproh
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattanna, Bangkok 10110, Thailand
| | - Amara Apilux
- Center for Innovation Development and Technology Transfer, Faculty of Medical Technology, Mahidol University, 999 Phuttamonthon 4 Road, Salaya, Nakhon Pathom 73170, Thailand.
| | - Orawon Chailapakul
- Electrochemistry and Optical Spectroscopy Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand; Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand.
| |
Collapse
|
17
|
Lin JM, Huang YQ, Liu ZB, Lin CQ, Ma X, Liu JM. Design of an ultra-sensitive gold nanorod colorimetric sensor and its application based on formaldehyde reducing Ag+. RSC Adv 2015. [DOI: 10.1039/c5ra16266a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
HCHO could reduce Ag+ to Ag on the surface of AuNRs to form Au core–Ag shell nanorods (Au@Ag↓NRs) in AuNRs–Ag+–HCHO system, which caused LPAB of AuNRs to redshift. Thus, a responsive AuNRs colorimetric sensor for the detection HCHO has been developed.
Collapse
Affiliation(s)
- Jin-Mei Lin
- College of Chemistry and Environmental
- Minnan Normal University
- Zhangzhou
- P. R. China
| | - Yi-Qun Huang
- College of Chemistry and Environmental
- Minnan Normal University
- Zhangzhou
- P. R. China
- Zhangzhou Affiliated Hospital of Fujian Medical University
| | - Zhen-bo Liu
- The Third Hospital of Xiamen
- Xiamen
- P. R. China
| | - Chang-Qing Lin
- Department of Food and Biological Engineering
- Zhangzhou Institute of Technology
- Zhangzhou
- P. R. China
| | - Xudong Ma
- Zhangzhou Affiliated Hospital of Fujian Medical University
- Zhangzhou
- P. R. China
| | - Jia-Ming Liu
- College of Chemistry and Environmental
- Minnan Normal University
- Zhangzhou
- P. R. China
| |
Collapse
|
18
|
Yuan H, Janssen KPF, Franklin T, Lu G, Su L, Gu X, Uji-i H, Roeffaers MBJ, Hofkens J. Reshaping anisotropic gold nanoparticles through oxidative etching: the role of the surfactant and nanoparticle surface curvature. RSC Adv 2015. [DOI: 10.1039/c4ra14237c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We study reshaping of gold nanorods, bipyramids and triangles to reveal roles of the surfactant in the oxidative etching process.
Collapse
Affiliation(s)
- Haifeng Yuan
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
| | | | - Thomas Franklin
- Department of Microbial and Molecular Systems
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- B-3001 Leuven
- Belgium
| | - Gang Lu
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
| | - Liang Su
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
| | - Xian Gu
- Department of Microbial and Molecular Systems
- Centre for Surface Chemistry and Catalysis
- KU Leuven
- B-3001 Leuven
- Belgium
| | - Hiroshi Uji-i
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
- PRESTO
| | - Maarten B. J. Roeffaers
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
- Department of Microbial and Molecular Systems
| | - Johan Hofkens
- Department of Chemistry
- KU Leuven
- B-3001 Leuven
- Belgium
- Nano-Science Center
| |
Collapse
|