SYNTHETIC METALS
·
2017
·
IF 2.435
Peng Kong,Rui Wang,Chen Zhang,Zhongjie Du,Hangquan Li,Wei Zou
A novel strategy for synthesizing a quantum dot (QD)-sensitized silver nanowire (AgNW) nanocomposite has been reported. 4-aminothiophenol (PATP) functionalized quantum dots (QDs-PATP) were prepared using the thiol ( SH) end of PATP molecules strongly bound to the surface of QDs via a ligand exchange technique. AgNWs could bind to the remaining amino group ( NH 2 ) of PATP via self-assembly techniques, and quantum dot-sensitized silver nanowires were then formed. The nanocomposite is denoted as QDs-PATP@AgNWs. The photovoltaic properties of a quantum dot-sensitized solar cell (QDSSC) based on QDs-PATP@AgNWs were investigated. Under AM 1.5 illumination, the QDSSC reached a peak conversion efficiency of 3.34%. This finding suggests that QDs-PATP@AgNWs had potential applications as a photoanode for QDSSC.
研究领域:
材料科学
·
纳米技术
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
iScience
·
2023
·
IF 5.8
Yuming Hu,Tingqing Wu,Jiabing Zhang,Wei Sun,Mengfei Lv,Hongfei Xie,Tangyue Xue,Teng Han,Chunbao Li,Meng Su,Yanlin Song
Reliable monitoring the movement amplitude and dynamics during sports exercise is significant for improving training results and preventing training wound. Here, we present a printed perovskite-based photodetector for real-time and quantitative monitoring of sports motion. The ordered nucleation and growth of perovskite crystals are regulated by the 4-acetamidothiophenol (AMTP) at the interface, which promotes the size of perovskite crystals into the micrometer. Benefiting from the uniformity of the AMTP-regulated MAPbI 3 , the as-prepared photodetector gives great photocurrent response under indoor light or outdoor light. During the exercise, real-time monitoring sports motion is achieved through detecting the illumination changing of photodetectors attaching on the wrist and ankles. Moreover, twelve kinds of common sports can be quantitatively analyzed with the detection of illumination changing on the photodetector. Such photodetector provides an efficient measurement method of wearable electronics for sports monitoring.
研究领域:
材料科学
·
生物医学工程
·
运动科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2016
·Vol. 4
·期 31
·7472-7477
·
IF 5.066
Yongqiang Dong,Qian Wang,Lisi Wan,Xu You,Yuwu Chi
A simple method has been developed for the preparation of silver nanoparticles/carbon based quantum dot nano-hybrids (AgNPs@CDs). First, the small-sized CDs with abundant oxygen-containing functional groups adsorbed Ag+ ions through ion exchange or coordination reactions. Then, during the reaction with NaBH4, the Ag+ ions were reduced to AgNPs while the oxygen-containing functional groups were partially removed from the CDs. Thus, CDs were coated on the surfaces of the resultant AgNPs, leading to the formation of AgNPs@CDs. The residual oxygen-containing groups on the CDs made the obtained AgNPs@CDs possess excellent dispersivity and long-term stability in water. The synthesized AgNPs@CDs showed high surface-enhanced Raman scattering (SERS) activity and provided a sensitive SERS sensing ability for 4-aminothiophenol, with a wide dynamic range from 1 × 10−10 to 1 × 10−5 M and a low detection limit (S/N = 3) of 5.0 × 10−11 M.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Jiaqi Chen,Ting Zhong,Xi Lu,Feng Zhao,Pan Wang,Xue Yu,Yuxin Yang,Fengyun Sun,Xiaochun Wu,Wei Feng
Nitrite (NO2–) in water and food is a potential threat to human health. The determination of nitrite content is very significant for people’s life safety. Here, 4-aminothiophenol (4-ATP)-modulated silver growth on gold nanospheres (GNSs) was designed to detect nitrite. It was verified that the exposed amino groups of 4-ATP molecules on GNSs can accelerate Ag overgrowth. On the contrary, the deamination reaction of 4-ATP with nitrite can reduce the Ag overgrowth rates. 4-ATP modified on GNSs can not only increase the spectrophotometry response of nitrite with a low limit of detection (LOD = 36 nM) but also obtain a wide and flexible detection range (0–60 μM). In addition, this method showed good selectivity to nitrite. The excellent optical response, the sharp contrast between the acceleration and deceleration of Ag growth, and the customizable basic setting of the sensing ligands can provide a universal design scheme for high-performance detection methods.
研究领域:
分析化学
·
纳米技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2022
·
IF 2.042
Abdullah Akhdhar,Amr A. Yakout
Heavy metals sequestration from industrial discharges has aroused increasing attention worldwide to cleaner and sustainable water production by developing fast, effective eco-friendly nanosorbents. This study aimed to design a robust and fast nanocomposite to remove heavy metal ions, mainly Pb(II) and Cd(II). To this end, poly-(2-aminothiophenol); PATP was incorporated into graphene oxide; GO to fabricate PATP@GO nanocomposite. The structure and morphology of the novel nanocomposite were evaluated by FTIR, TEM, XRD, Raman, EDX, and TGA. Integrating PATP improved the adsorption efficiency of the GO from 61.3% to 98.6% for Pb(II) and 34.6% to 87.3% for Cd(II). Furthermore, the impact of pH, the mass of nanocomposite, metal ions concentrations, and coexisting ions were thoroughly investigated and optimized. The potential efficiency and adsorption capacity of PATP@GO nanocomposite toward Pb(II) was 98.6.00%, 142.9 mg.g-1 for Pb(II) at pH 5 and 87.3%, 125.0 mg.g-1 for Cd(II) at pH 7 within 25 minutes, respectively. This behavior was explained in terms of strong complex formation with the thiol groups of PATP, as well as the hydroxyl and carboxyl groups in GO. Kinetic studies were based on pseudo-second order (R2 > 0.99) and the adsorption data are best fitted with the Langmuir model. The excellent stability of PATP@GO nanocomposite enabled effective extractions for seven successive runs (98.6%-95.3% for Pb(II) and 87.3–85.1% for Cd(II)). The developed PATP@GO nanocomposite is believed to show fast and high potential in detoxifying of heavy metal ions from different environmental samples in aquatic life.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Dechan Lu,Rongyuan Cai,Yuqin Liao,Ruiyun You,Yudong Lu
Abnormal uric acid (UA) content in body fluids can fully reflect the status of metabolism and immunity in the body. We have developed a simple, efficient and label-free surface enhanced Raman scattering (SERS) method for UA detection. Briefly, p-aminothiophenol (p-ATP) was used as the internal standard molecule and linking molecule to prepare a glass/p-ATP/Ag NPs SERS substrate. The Raman characteristic peak of p-ATP at 1076 cm −1 can be used as an internal standard molecule to correct the signal fluctuation of UA detection. The results show that the SERS method owns a linear response with a ranging from 5 × 10 -6 to 10 -3 M of UA characteristic peak of both 693 cm −1 and 493 cm −1 with a determination coefficient (R 2 ) of 0.9878 and 0.9649, respectively. Additionally, the SERS sensor has been further used for the analysis of UA in sweat and good recoveries were obtained for the sensing of sweat. We believe that the developed SERS substrate has potential for applications in healthcare monitoring.
研究领域:
分析化学
·
生物医学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2014
·Vol. 16
·期 28
·14706-14712
·
IF 4.198
Xuan He,Hui Wang,Zhongbo Li,Dong Chen,Qi Zhang
An efficient and green approach was used to fabricate novel and low-cost surface-enhanced Raman scattering (SERS) spectroscopy sensors based on 4-aminothiophenol (4-ATP) functionalized ZnO–Ag hybrid nanoflowers for the detection of explosives. Such SERS sensors exhibited high sensitivity to rhodamine 6G (R6G) at a low concentration of 10−12 M and an enhancement factor of over 4.12 × 106 was achieved. Moreover, the Raman-inactive trinitrotoluene (TNT) initiated the high Raman scattering of non-resonated 4-ATP through the formation of a π-donor–π-acceptor interaction between the π-acceptor, TNT, and the π-donor, the 4-ATP–Ag–ZnO complex, on the flower-like hybrids. Because this π-donor–π-acceptor interaction could effectively induce the “hot spots” for SERS, TNT concentrations as low as 5 × 10−9 M could be detected. Furthermore, other derivatives of TNT were also explored, and this sensor exhibited better selectivity for TNT than other similarly structured explosives. The low-cost hybrid SERS substrates presented good sensitivity and reproducibility for the analytes employed, demonstrating promising application in forensic science and homeland security.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2025
·
IF 6.1
Lianyu Bao,Fei Zhou,Ye Liu,Botian Wang,Rang Chu,Qingmao Zhang,Hongcheng Wang
Monitoring chemical reaction processes is of great significance in the study of the reaction mechanisms, and the optimization or control of reaction conditions. In this work, we demonstrate a novel monitoring method of chemical reactions using fiber SERS probes. The high-performance fiber SERS probes are prepared by the laser-induced evaporation self-assembly method (LIESAM), where lots of Au-nanorod clusters are deposited on the fiber facet for providing large SERS enhancement factor and good hot electron catalytic property. The remote and in-situ monitoring of chemical reactions is achieved through simply dipping the probes into the reaction solution. Taking the classic reduction reaction from 4-nitrothiophenol (4-NTP) to 4-aminothiophenol (4-ATP) by sodium borohydride (NaBH 4 ) as an example, the time-resolved SERS spectra collected by probes clearly reflect the reduction procedure of the disappearance of 4-NTP, the formation of intermediate product 4,4′-dimercaptoazobenzene (4,4′-DMAB) and the emergence of the final product 4-ATP. In addition, a new Raman peak at 1366 cm −1 is observed when the 4-NTP is reduced in an H 2 atmosphere generated by the hydrolysis of NaBH 4 , corresponding the formation of a new intermediate product 4-nitrosothiophenol (4-NSTP). Also, the monitoring of the oxidation reaction from 4-ATP to 4,4′-DMAB is demonstrated using fiber SERS probes. Considering that all the SERS spectra are acquired with a portable Raman spectrometer and the fiber has a very low transmission loss, this work provides a good platform for remote, on-site and in situ monitoring of chemical reactions in liquid environments and thus finds important applications in scientific research and industrial scenarios.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Plasmonics
·
2024
·
IF 3.3
Cui Jiahao,Han Xue,Shi Guochao,Li Kuihua,Zhou Wenying,Li Zelong,Yu Zengshan,Wang Mingli
Surface-enhanced Raman scattering (SERS) sensors are ideal for point-of-care testing (POCT) of disease markers; the key to practical applications lies in their quantitative detection capabilities and high sensitivity. In this study, We propose a simple method to develop a high-sensitivity composite SERS substrate using physical vapor deposition (PVD) technology. This SERS substrate, utilizing 4-aminothiophenol (4-ATP) as the detection molecule, demonstrated a high enhancement factor (~ 10 6 ) and a low detection limit (10 −10 M). The corrected linearity problem achieved good linear correlation ( R 2 = 0.988) by using 4-ATP. In the trace detection process of creatinine, when creatinine is dissolved in goat serum solution diluted 1000 times, there is still a clear SERS signal at the characteristic peak when the concentration is only 10 −4 g/l, further demonstrating the potential of SERS sensors in the detection of renal disease biomarkers.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Hui-Yuan Peng,Yuan-Hui Xiao,Huan-Huan Yu,Jia-Zheng Wang,Jian-De Lin,Rajkumar Devasenathipathy,Jia Liu,Pei-Hang Zou,Meng Zhang,Jian-Zhang Zhou,De-Yin Wu,Zhong-Qun Tian
The analysis of plasmonic photoelectrochemical reactions on nanostructured noble metal electrodes is an attractive field, but little is known about the detailed competition between the photochemical and electrochemical reaction processes, product selectivity, and synergistic kinetics. In this work, para-aminothiophenol (PATP), as a probe molecule in surface-enhanced Raman spectroscopy (SERS), was used to investigate electrochemical and photochemical oxidation on nanostructured gold electrodes. Using electrochemical SERS (EC-SERS) and density functional theory (DFT) calculations, the sophisticated oxidation process and the selectivity of PATP oxidation (electrochemical oxidation and photochemical oxidation) under different conditions were determined. Moreover, based on the provided oxidation pathways of PATP on the gold electrode, the oxidation kinetics of PATP was studied by COMSOL simulation and a spectroscopic tool. The increasing rate constant of cationic radical formation due to hot holes at a high laser power has induced the selective generation of photochemical products. This work built a system to modulate the reaction selectivity and will inspire photoelectrochemical kinetic research in other plasmonic metal electrode–adsorbate systems of nanostructures.
研究领域:
电化学
·
材料科学
·
纳米技术
·
理论计算
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Lushi Kong,Nanxi Dong,Guofeng Tian,Shengli Qi,Dezhen Wu
Surface-enhanced Raman scattering (SERS) spectroscopy is considered as a highly powerful analytical tool for environmental contaminants monitoring, detection of bio/chemical warfare agents, explosive detection and biological sensing. In this study, silver nanoparticles (Ag NPs) decorated polyimide (PI) nanofabric was successfully prepared as an active flexible substrate for SERS. Without any surface modification and activation, this Ag@PI nanofabric SERS substrate was prepared via an integrated process of electrospinning and ion exchange-in situ reduction. ATR-FTIR, ICP, XRD, SEM, and TGA were used to investigate the influencing factors during preparation. p-Aminothiophenol (p-ATP) was used as the probe molecule to characterize the SERS performance of Ag@PI nanofabric substrate. As a result, this Ag@PI nanofabric exhibits remarkable enhancement effect (EF = 9.0 × 10 3 ), good reproducibility, ultra-low detection limit (10 −14 mol/L), and a good linear relationship between the concentration of p-ATP and intensity of its characteristic peak, making it a desirable candidate as the SERS substrate.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2013
·
IF 5.437
Minmin Liu,Wei Chen
Sensitive and selective detection of 2,4,6-trinitrotoluene (TNT) has attracted considerable attention due to the wide applications of TNT as explosive material . Many efforts have been made to develop various sensors for detecting TNT in recent years. We herein report a novel sensor based on p-aminothiophenol (PATP) functionalized silver nanoparticles supported on graphene nanosheets (Ag/GNs), which was found to be a kind of effective chemosensor for the ultratrace detection of TNT by using surface enhanced Raman scattering (SERS). In the present hybrid material, PATP is paired together to form a corresponding azo compound p, p′-dimercaptoazobenzene (DMAB) and thus can be used as a model Raman probe. The π-donor–acceptor interaction between π-acceptor TNT and π-donor DMAB-Ag/GNs complex can effectively induce the “hot spots” for SERS. The intense spectral resonance from the DMAB–TNT–DMAB bridges formed between the Ag/GNs nanosheets could result in enhanced Raman signals of DMAB molecules with the presence of ultratrace TNT. SERS measurements demonstrated that TNT with concentration as low as 10 −11 M can be detected by using the present SERS platform. The present study not only provides a facile method for ultrasensitive and selective detection of TNT but also could develop a graphene-based SERS platform.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）