ANALYTICA CHIMICA ACTA
·
2014
·
IF 4.517
Yanlin Lv,Lili Zhu,Heng Liu,Yishi Wu,Zili Chen,Hongbing Fu,Zhiyuan Tian
A new type of fluorescent probe capable of detecting Ag + and Hg 2+ in two independent channels was developed in the present work. Specifically, in CH 3 CN–MOPS mixed solvents with CH 3 CN/MOPS ratio (v/v) of 15/85, this type of probe fluoresced weakly, and the addition of Ag + remarkably induced fluorescence enhancement of the probe. In CH 3 CN–MOPS mixed solvents with the percentage of CH 3 CN increased up to 65%, the probe was highly fluorescent and addition of Hg 2+ dramatically induced the fluorescence quenching. Thus, using such single-fluorophore-based probe and tuning the polarity of the mixed solvent, Ag + , and Hg 2+ can be detected in independent channels with high selectivity and sensitivity. As a result, the mutual interference usually encountered in most cases of Ag + and Hg 2+ sensing owing to the similar fluorescence response that these two ions induced, can be effectively circumvented by using the probes developed herein.
研究领域:
分析化学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Hu Zhengchuan,Wu You,Tang Li,Zhou Weibo,Wang Jieqiong,Wu Wei,Li Ming,Wang Lu
Wood sponges, characterized by their low density and highly anisotropic porous structure, demonstrate significant potential for wearable and flexible electronic devices. However, fabricating multifunctional integrated sensors with wide operating ranges and linear response characteristics remains a challenge. In this study, we propose a polyaniline/graphene-modified wood sponge piezoresistive sensing material (PGWS). The synergistic interaction between polyaniline (PANI) microspheres and reduced graphene oxide (rGO) nanosheets enhances the structural stability of the sensor. The PGWS material exhibits high compressibility (up to 70% strain), excellent elasticity (95.36% height retention after 200 compression cycles), high sensitivity, and a broad pressure detection range (0–200 kPa). These advancements significantly improve the application prospects of wood sponge-based piezoresistive sensors in next-generation flexible electronics.
研究领域:
材料科学
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电子工程
·
纳米技术
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2025
·
IF 4.6
Lingchen Wang,Yue Huang,Linlin Sun,Xiaojuan Gong,Chuan Dong,Shaomin Shuang
Herein, a novel rapid, specific, and sensitive probe for adenosine triphosphate (ATP) detection is developed. We have pioneered the integration of split ATP aptamers with aggregation-induced emission (AIE) via chemical binding to obtain a novel ATP detection probe (TPE probe). Upon the binding of the ATP split aptamer to the target, the intermolecular distance of the AIE molecules decreases, restricting their spatial rotation, which leads to an enhancement of the fluorescence signal, thereby enabling the detection of ATP. This unique design provides the probe with both target-specific recognition capability of the aptamer and sensitive signal-reporting function. Under the optimized experimental conditions, the probe exhibits a linearity range from 1-1000 nM with limit of detection 0.14 nM, displaying a comparative advantage over previously reported methods in terms of sensitivity and selectivity. Additionally, this method demonstrated satisfactory performance for ATP detection in beer samples, with recoveries between 97.5 % to 104.6 %. More importantly, the current research is expected to provide an effective monitoring method for beer quality control.
研究领域:
生物化学
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分析化学
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产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Kexin Pan,Liyuan Chen,Guangjun Tian,Juyue Zhou,Suying Xu,Leyu Wang
Development of fluorescent probes with high sensitivity and specificity is always desirable, yet, challenging. Conventionally, improving the responses of probes relied on optimizing the reactivities of recognition sites, either by increasing the binding affinity or reaction rates. Herein, we found the sensitivity and response kinetics could be improved by changing the aggregation behaviors of probes. As a proof-of-concept, benzothiazole derivatives with different side chain lengths were prepared and the enhanced responses toward sulfur dioxide (SO 2 ) were observed for the probe with longer side chain. We demonstrated that the long side chain facilitates formation of tightly aggregates, which possessed higher positive charges and susceptible recognition sites as compared with probes possessing short side chains, resulting in better sensitivity and faster responses. In addition, we also demonstrated the generality of such design protocols with probes displaying aggregation induced emission (AIE) properties. Thus, the proposed side chain engineering strategy provides new paradigm for probe design.
研究领域:
化学
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生物成像
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Haoxue Tan,Zhuoran Song,Zhonglong Wang,Xiaoqin Yang,Xiaoping Rao,Ping Zhao,Qian Jiang
As a well-known endogenous reactive oxygen species, hypochlorous acid (HClO) plays key role in body immunity and bacterial disinfection. Thus, it is a high demand for development an analytical method to detect ClO under physiological conditions. Herein, a novel ratiometric fluorescence probe HCP was developed based on p -hydroxycinnamic acid for detecting ClO . When ClO was present, probe HCP underwent an obviously fluorescence and colorimetric color changes, which can be observed by the “naked eye”. The probe HCP had remarkable selectivity, good sensitivity (99.31 nM) and rapid response (45 s) for monitoring ClO in a wide pH range (6.0–10.0). Furthermore, probe HCP had good biocompatibility and low toxicity. Imaging experiments demonstrated that probe HCP could be utilized to detect exogenous and endogenous ClO . In addition, HCP -paper strip was developed for real-time ClO monitoring.
研究领域:
分析化学
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生物医学
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免疫学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2019
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IF 5.026
Jingwen Wang,Yushan Yang,Guoying Sun,Min Zheng,Zhigang Xie
2,4,6-trinitrophenol (TNP) is environmentally deleterious substance that has been of pressing societal concern. Therefore, developing a convenient and reliable platforms for its fast and efficient detection is of paramount importance from security point of view. Herein, amphiphilic fluorescent carbon dots (CDs) were prepared by a simple solvothermal method . CDs exhibit high selectivity and sensitivity on TNP in the polar and apolar solvent and even natural water samples. Moreover, the simple and portable indicator paper can be prepared conveniently and used for sensing TNP visually with high sensitivity and fast response. Research findings obtained from this study would assist in the development of portable devices for the on-site and real-time detection of environmental hazards.
研究领域:
环境科学
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材料科学
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分析化学
✓ 已验证
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2016
·Vol. 409
·期 8
·2075-2081
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IF 3.125
Zhang Shan,Sun Mingtai,Yan Yehan,Yu Huan,Yu Tao,Jiang Hui,Zhang Kui,Wang Suhua
The sensitive and selective determination of fluoride ions is particularly significant in environmental protection, food safety, and health care products. In this work, a highly selective turn-on fluorescent probe for fluoride ions has been synthesized by simply functionalizing fluorescent isophthalaldehyde with silicone-oxygen bonding. The selectivity of the probe is based on the specific reactivity of the silyl group toward fluoride ions in aqueous solution. The nucleophilic substitution reaction of fluoride ions triggers the cleavage of the Si-O bond to release a strongly fluorescent product, which can be used for the determination of fluoride ions by fluorescence intensity enhancement. The probe molecules are specifically responsive and highly selective for the fluoride anion over other relevant anions and cations. This fluorescent probe also shows high photostability and exhibits good sensitivity for fluoride ions, and the limit of detection is as low as 67 ppb. We have demonstrated its application for on-site sensitive determination of fluoride ions for environmental monitoring and protection.
研究领域:
分析化学
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环境科学
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生物医学
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产品关联
DOI
PubMed
高影响因子
POLYMER
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2020
·
IF 4.231
Yi Wang,Guanghui Gao,Xiuyan Ren
Hydrogels flexible wearable sensors have gained widespread attention. However, there was a great challenge to prepare the flexible hydrogel sensor with rapid response, wide strain monitoring ranges, great sensitivity and self-adhesion. Therefore, the greatly sensitive and rapidly responsive strain sensor with wide monitoring range and self-adhesion was prepared by introducing sodium caseinate (SC) and reduced graphene oxide (rGO) into the polyacrylamide hydrogel due to ions and electrons provide two different ways of conducting electricity. Casein not only imparted excellent adhesion to the hydrogel, but also provided a good ionic conductive pathway. In addition, the introduction of rGO could offer an electronic pathway. Therefore, the obtained hydrogel exhibited excellent rapid response (190 ms), high sensitivity (Gauge factor, GF = 13.14) and wide strain monitoring range (0.1–1100%). As a result, SC/rGO/PAAm hydrogels could detect sensitive locomotor signals (for example speaking) and large-scale mankind movements for example knee bending). It was believed that the ion and electron conduction would provide a new mechanism to preparing greatly sensitive hydrogel strain sensor.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Nano Research
·
2020
·Vol. 14
·期 7
·2337-2344
·
IF 8.183
Hou Chuang,Tai Guo’an,Liu Bo,Wu Zenghui,Yin Yonghe
Heterostructure has triggered a surge of interest due to its synergistic effects between two different layers, which contributes to desirable physical properties for extensive potential applications. Structurally stable borophene is becoming a promising candidate for constructing two-dimensional (2D) heterostructures, but it is rarely prepared by suitable synthesis conditions experimentally. Here, we demonstrate that a novel heterostructure composed of hydrogenated borophene and graphene can be prepared by heating the mixture of sodium borohydride and few-layered graphene followed by stepwise and in situ thermal decomposition of sodium borohydride under high-purity hydrogen as the carrier gas. The fabricated borophene-graphene heterostructure humidity sensor shows ultrahigh sensitivity, fast response, and long-time stability. The sensitivity of the fabricated borophene-based sensor is near 700 times higher than that of pristine graphene one at the relative humidity of 85% RH. The sensitivity of the sensor is highest among all the reported chemiresistive sensors based on 2D materials. Besides, the performance of the borophene-graphene flexible sensor maintains good stability after bending, which shows that the borophene-based heterostructures can be applied in wearable electronics. The observed high performance can be ascribed to the well-established charge transfer mechanism upon H 2 O molecule adsorption. This study further promotes the fundamental studies of interfacial effects and interactions between boron-based 2D heterostructures and chemical species.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Lili Xiao,Qing Zhao,Lin Jia,Qi Chen,Jin Jiang,Qiyu Yu
Nickel-based nanoparticles have been widely used in detection of glucose due to its multiple oxidation states and high stability in alkaline environment. In this work, amorphous nickel phosphate was supported by Co-based zeolitic imidazolate framework (ZIF-67) through ion exchange to prepare Ni 3 (PO 4 ) 2 @ZIF-67 composites as the electrode material . In comparison to glassy carbon electrode (GCE), Ni 3 (PO 4 ) 2 /GCE and ZIF-67/GCE, the Ni 3 (PO 4 ) 2 @ZIF-67/GCE showed significantly enhanced performances in electrocatalytic oxidation of glucose. The great improvement on glucose oxidation current could be ascribed to the unique structure of Ni 3 (PO 4 ) 2 @ZIF-67, the mutual promotion between Ni(III)/Ni(II) and Co(IV)/Co(III) interfacial redox reactions and increased surface areas. Under optimum conditions, as-prepared Ni 3 (PO 4 ) 2 @ZIF-67/GCE showed an ultra-high sensitivity of 2783 μA mM −1 cm −2 with a wide linear ranged from 1.0 μM to 4.0 mM, and a low limit detection of 0.7 μM at a signal-to-noise ratio of 3. Moreover, Ni 3 (PO 4 ) 2 @ZIF-67/GCE were successfully applied to detect glucose of human serum with good recoveries (92–109%), which indicated that Ni 3 (PO 4 ) 2 @ZIF-67 can found application in the clinical detection.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Dongyan Li,Yuxiong Lv,Huaiyue Xia,Jing Huang,Wenjie Liu,Jianna Yu,Guoxing Jing,Wen Liu,Yingying Sun,Wenshan Li
Sensitivity and selectivity are critical parameters to evaluate the performance of sensors. For trace detection, it remains a challenge to design a new sensor that achieves high sensitivity and selectivity simultaneously. Here, we present a target-activated dual Mg 2+ -dependent DNAzyme (MNAzyme) that served as a simple sensing model to explore the multivalency in improving the analytical sensitivity and selectivity for target detection. Mercury ion (Hg 2+ ), a notorious toxic metal ion , was selected as a model target. In the presence of Hg 2+ , the thymine-rich regions of the hairpin probe and primer could hybridize to form a stable duplex via the thymine-Hg 2+ -thymine structure. Then, an intact enzyme sequence was exposed and two separate enzyme fragments were close to each other, generating a dual MNAzyme. Benefiting from the localized high-concentration of the enzyme strand, the dual MNAzyme showed a remarkable improvement in binding stability. The catalytic rate constant of the dual MNAzyme was theoretically 1.60 times higher than that of the monomeric counterpart, and the sensitivity and selectivity had 4.50 and 1.44-fold enhancement, respectively. When the dual MNAzyme was used for sensor applications , the limit of detection was determined to be 0.04 and 0.2 nM via UV–vis spectrophotometer and naked eye, respectively. Meanwhile, the method offered desirable selectivity toward Hg 2+ against other metal ions. With the advantages of simple operation, high sensitivity, and desirable selectivity, the developed multivalent sensing platform could be easily expanded in the future for the on-site detection of other low-abundance analytes.
研究领域:
生物化学
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环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 10
·期 22
·11980-11989
·
IF 12.732
Zhuo Liu,He Lv,Ying Xie,Jue Wang,Jiahui Fan,Baihe Sun,Lin Jiang,Yang Zhang,Ruihong Wang,Keying Shi
Very diverse two-dimensional (2D) materials have bloomed in NO2 gas sensing applications, which provides new opportunities and challenges in function oriented gas sensors. In this work, a 2D/2D/2D structure of the Ti3C2Tx@TiO2@MoS2 composite was well designed via a facile one-step hydrothermal route, in which TiO2 nanosheets are in situ grown on ultrathin and highly conductive Ti3C2Tx MXene. Simultaneously, the few-layer and vertically oriented MoS2 nanoflakes rich in active edge-sites were uniformly distributed in the composite. Ti3C2Tx MXene and MoS2 act respectively as the electron reservoir and main sensitive material. The strong interfacial contact in different components facilitated the transfer of charge carriers and their spatial separation. Integrating the unique structural and electronic properties, the as-prepared Ti3C2Tx@TiO2@MoS2 sensor exhibited a remarkable gas sensing performance at room temperature (Ra/Rg = 55.16, 50 ppm NO2), which is 7.3, 3.8 and 2.1 times higher than that of pristine MoS2, TiO2@MoS2 and Ti3C2Tx@MoS2 composites, respectively. It also achieved ultrafast response time (1.8 s), more than 90% recoverability, low detection limit (23 ppb), dedicated selectivity and as long as eight-week stability.
研究领域:
材料科学
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传感器技术
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环境监测
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）