MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Lu Li,Xin Lyu,Saibo Liang,Zhanfang Liu
Hydrogen peroxide (H 2 O 2 ) is an important oxidant that exists widely in biological systems and the environment, and has been extensively used in medical, environmental, food, and industrial fields. Accurate, rapid, and sensitive detection of H 2 O 2 content is of great significance in the fields of biomedicine, environmental monitoring, food safety, and public safety. In this study, a probe was developed by utilizing Rhodamine 6G (Rh6G), a readily available commercial fluorescent dye, within hollow SiO 2 photonic crystals (HSPCs) to produce an amplified fluorescent signal. Furthermore, I - were incorporated into the system, which can be oxidized to I 2 in the presence of H 2 O 2 . The I 3 - produced can react with Rh6G to form a complex that quenches the fluorescence signal, enabling highly efficient detection of H 2 O 2 . The method does not require complex organic synthesis or modification of fluorescent groups. Additionally, the sensors exhibit good performance in terms of repeated use and can also potentially detect different concentrations of ethanol solutions.
研究领域:
生物医学
·
环境监测
·
食品安全
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产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2018
·Vol. 44
·期 8
·4633-4640
·
IF 1.674
Cui Chuanfeng,Lei Juying,Yang Lingang,Shen Bin,Wang Lingzhi,Zhang Jinlong
A highly sensitive molecularly imprinted fluorescent sensor for rhodamine 6G (R6G) was fabricated using carbon dot (CD)-embedded mesoporous organosilica as scaffold through a one-pot self-assembly process. The embedded CDs and R6G exhibit efficient fluorescence resonance energy transfer (FRET) due to the overlap between the emission band of energy donor CDs and the excitation band of energy acceptor R6G, as well as their nanometer-sized distance. After acid treatment, molecularly imprinted silica for recognition of R6G with excellent performance in terms of sensitivity and selectivity was obtained, being attributed to the FRET effect between CDs and R6G and the spatial recognition ability for R6G.
研究领域:
材料科学
·
分析化学
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2017
·
IF 2.536
Yan Jin,Yonghua Sun,Chongying Li,Chao Yang
In present work, rhodamine B hydrazide and rhodamine 6G hydrazide were synthesized and the chemiluminescence performance has been investigated. Based on the chemiluminescence of rhodamine 6G hydrazide‑chromium(VI), a selective and sensitive method for the direct detection of chromium(VI) was developed. The chemiluminescence intensity was linearly related to the concentration of chromium(VI) in the range of 2.60 × 10 − 8 –8.00 × 10 − 6 mol/L with a correlation coefficient of r = 0.998 and a detection limit of 1.4 × 10 − 8 mol/L (S/N = 3). The results indicated rhodamine 6G hydrazide was an excellent chemiluminescent probe for chromium(VI) without reduction of chromium(VI) to chromium(III). A possible mechanism of CL emission was also suggested.
研究领域:
分析化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Journal of Applied Spectroscopy
·
2017
·Vol. 84
·期 5
·900-905
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IF 0.572
Zhao Zh.,Sheng L.,Su B.,Tao C.,Jing W.
The interaction between rhodamine 6G (Rh6G) and cerium sulfate was studied by the fluorescence quenching method. In a sulfuric acid medium, the interaction of Ce(IV) with Rh6G results in Rh6G fluorescence quenching. The maximum excitation wavelength (λ ex ) and the maximum emission wavelength (λ em ) are 530 nm and 555 nm, respectively. A good linearity between the relative fl uorescence intensity (ΔF) and Ce(IV) was observed in the range ~0.12–1.08 μg/mL. The detection limit was 1.4 × 10 –3 μg/mL. The optimum reaction conditions, influencing factors, and effect of coexisting substances were investigated in the experiment. We found that the concentration of Rh6G was 3.2 × 10 –6 mol/L, and the fl uorescence intensity was maximum.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 12
·e70055
·
IF 3.2
Jiarui Si,Yikang Liu,Yuanfei Jiang,Yutong Chen,Anmin Chen,Mingxing Jin
The fluorescence quenching behavior of rhodamine 6G (R6G) by graphene oxide (GO) under varying pH conditions was investigated. Utilizing steady-state fluorescence spectroscopy, single-photon counting, and ultrafast time-resolved absorption spectroscopy, we explored the quenching efficiency at pH values of 3, 7, and 11. Our findings reveal that GO effectively quenches R6G fluorescence across all tested pH levels, with the most significant quenching observed at pH 7. This quenching efficiency is attributed to optimal electrostatic interactions and efficient charge transfer between GO and R6G at neutral pH. At pH 3, the quenching efficiency is moderately reduced due to partial protonation of GO, which weakens electrostatic interactions but maintains hydrogen bonding. At pH 11, the quenching efficiency is lowest, likely due to increased electrostatic repulsion and reduced charge transfer resulting from deprotonation of GO. Ultrafast time-resolved absorption spectroscopy further confirmed the dynamic nature of the quenching process, showing distinct differences in relaxation kinetics across the pH spectrum. This study highlights the critical role of pH in modulating the quenching mechanisms of GO and R6G, providing valuable insights for the design of pH-sensitive fluorescence sensing systems.
研究领域:
化学
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材料科学
·
光谱学
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DOI
PubMed
高影响因子
Analytical Methods
·
2018
·Vol. 10
·期 47
·5731-5737
·
IF 2.073
Q. Huang,Y. T. Chen,Y. W. Ren,Z. Y. Wang,Y. X. Zhu,Y. Zhang
A new rhodamine 6G derivative (R6GHP) has been synthesized for quick recognition of copper(II) ions (Cu2+) in aqueous solutions. The structure of R6GHP has been characterized by nuclear magnetic resonance and electrospray ionization mass spectrometry. Upon binding of Cu2+, the fluorescence intensity remarkably increases with about 36-fold enhancement. In addition, the color change from colorless to pink is visible to the naked eye. In optimal conditions, the fluorescence intensity and absorbance of R6GHP show good linearity with concentration of Cu2+ in the ranges of 1.0 × 10−6 to 1.0 × 10−5 mol L−1 and 1.0 × 10−6 to 1.2 × 10−5 mol L−1, respectively, with detection limits of 3.9 × 10−7 mol L−1 and 1.0 × 10−6 mol L−1. Besides, it has been successfully applied to detect Cu2+ in two water samples.
研究领域:
分析化学
·
环境科学
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产品关联
DOI
高影响因子
Analytical Methods
·
2021
·Vol. 13
·期 19
·2189-2195
·
IF 2.896
Lu Li,Jingru Li,Tiantian Meng,Zhanfang Liu,Hong Zhou,Jun Zhu,Junqing Shi
In this study, based on silica hollow sphere photonic crystals (SHSPCs), a simple and selective fluorescence sensor for high-performance diethylamine detection was developed. The sensor does not involve complicated integration of arrays or tedious synthetic work. During the detection, the SHSPCs could significantly enhance the fluorescence intensity of rhodamine 6G (Rh6G), and meanwhile, adsorb some Rh6G on their surface. Due to the competitive adsorption, diethylamine could free the Rh6G which was adsorbed on the surface of the SHSPCs, thus enhancing the fluorescence emission intensity with the increase of Rh6G concentration. The second enhancement of the fluorescence emission enabled the selective detection of diethylamine. It is remarkable that a simple and readily available dye (Rh6G) facilitates the efficient detection of diethylamine. Moreover, the sensor has good interference immunity, stability and reusability.
研究领域:
材料科学
·
分析化学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Hong Yan Zou,Qiang Wang,Tong Yang,Peng Fei Gao,Chun Mei Li,Yuan Fang Li,Cheng Zhi Huang
Synthesis and engineering of nanostructures with multiple components for the acceptable biosensing platform is a hot topic research. Herein, flower-like nonstoichiometric copper chalcogenides nanocrystals (Cu 2− x S y Se 1− y NCs) loaded with rhodamine 6G (R6G) were used as a selective and sensitive off-on fluorescent probe for biothiols based on inner filter effect (IFE). The Cu 2 −x S y Se 1− y showed the strong interband transition band in the UV–vis region and broad localized surface plasmon resonance (LSPR) in the near-infrared region which exhibited good light-harvesting features, and thus can show sufficient absorption of the excitation or emission light of fluorescent R6G with high fluorescence quenching ability. When the biothiols (glutathione, homocysteine and cysteine) were added, the interband transition bands of Cu 2− x S y Se 1− y NCs were suppressed, resulting in the fluorescence of R6G switched on. There was a good linear relationship between fluorescent recovery of R6G and the concentrations of glutathione, homocysteine and cysteine over the range of 1.0–150 μM, 1.0–200 μM, 1.0–150 μM with a detection limit of 32.0 nM, 34.0 nM and 31.0 nM, respectively. The established strategy exhibited the selective response to biothiol compounds and was also been applied for detecting biothiols in the human serum samples.
研究领域:
分析化学
·
生物传感
·
纳米材料科学
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2013
·Vol. 43
·期 4
·1846-1853
·
IF 3.806
Pan Wang,Mingliang Du,Ming Zhang,Han Zhu,Shiyong Bao
Tubular heterostructures based on titanium dioxide (TiO2) and silica nanotubes (SNTs) with high photocatalytic activity have been successfully obtained by a simple combination of an electrospinning technique and a solvothermal process. The as-prepared products were characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and N2 absorption–desorption experiments. The results confirmed that SNTs with high specific surface area were obtained by efficiently controlling the phase separation and solvent evaporation during the process of electrospinning and calcination, and TiO2 was successfully grown on the SNT substrates. The obtained titanium dioxide/silica nanotubes (TiO2/SNTs) heterostructures showed high photocatalytic activities to degrade Rhodamine 6G because of the formation of heterostructures, which might improve the separation of photogenerated electrons and holes. Furthermore, the TiO2/SNTs heterostructures could be easily recycled without an evident decrease in photocatalytic activity.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
OPTIK
·
2019
·
IF 1.914
Xiaxia Yue,Xiangxiang Zheng,Guodong Lv,Jiaqing Mo,Xiaoyang Yu,Jie Liu,Zhenhong Jia,Xiaoyi Lv,Jun Tang
Uniform, low-cost, surface-enhanced Raman scattering (SERS) active substrates were prepared by sputtering silver onto porous silicon (pSi) fabricated by an electrochemical etching method. The resulting Ag/pSi SERS substrates were characterized by scanning electron microscopy (SEM), and the SERS effect of the substrates was investigated using rhodamine 6G (R6G) as a probe. Furthermore, the signal uniformity of the Ag/pSi SERS substrates was confirmed through mapping measurements. The Ag/pSi SERS substrates exhibited uniform shape and size and stable SERS activity. Then, we demonstrated the capacity of the prepared silicon-based SERS substrates for detecting bovine serum albumin (BSA) and serum samples. Therefore, our Ag/pSi SERS substrates can be easily employed in practical applications to effectively assess healthcare.
研究领域:
生物传感
·
材料科学
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DOI
高影响因子
Scientific Reports
·
2020
·Vol. 10
·期 1
·1-10
·
IF 3.998
Qu Zixiang,Meng Xia,Duan Hongdong,Qin Dawei,Wang Lizhen
A highly effective method for the research and development of a novel macroscopic hydrogel sensor and bilayer hydrogel is reported. Based on Rhodamine 6G, an Hg 2+ sensitive fluorescent functional monomer was synthesized, then the monomer was utilized to synthesize hydrogel sensors and bilayer hydrogels. Hydrogel sensor has prominent selectivity to Hg 2+ , the bilayer hydrogel has shape changing function additionally. By combining a thermoresponsive hydrogel layer, poly N-isopropylacrylamide (PNIPAM), with an Hg 2+ selective hydrogel layer via macroscopic supramolecular assembly, a bilayer hydrogel is obtained that can be tailored and reswells. The bilayer hydrogel sensor can show complex shape deformation caused by the PNIPAM layer and the Hg 2+ -responsive characteristic of hydrogel sensor layer can be observed under visible light or UV light. This work will provide novel insights for the design and synthesis of novel smart materials with synergistic functions.
研究领域:
材料科学
·
化学传感
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
Nano Research
·
2019
·Vol. 12
·期 7
·1643-1649
·
IF 8.515
Liu Yang,Tian Xiaorui,Guo Weiran,Wang Wenqiang,Guan Zhiqiang,Xu Hongxing
Integrating surface enhanced Raman scattering with microfluidics is the long-term goal for reduced volume, multiplex and automation fingerprint detection of biomolecules. High sensitivity, repeatability, stability, reusability and real-time detection are the performance goals of Raman detection in the aqueous solution environment. Here, we reported the study on cavity mode enhanced SERS detection of both surface-adsorbed molecules and non-surface-adsorbed molecules in the solution environment. The cavity modes had important influence on the SERS enhancement, especially for the non-surface adsorbed molecules. Uniform, repeatable, reusable and real-time Raman signal detection of the non-surface adsorbed Rhodamine 6G molecules was demonstrated. Our work is an important step for the practical on-chip microfluidic Raman detection applications.
研究领域:
生物分析
·
光学检测
·
微流控技术
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产品关联
DOI
高影响因子
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