CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Linjia Li,Rui Zhang,Yanhong Lin,Dejun Wang,Tengfeng Xie
The exploitation of morphological engineering strategies enables the design of semiconductor-based photocatalysts with a precision that significantly enhances their photocatalytic activity. In this study, a paradigm has been provided that embeds plasmonic nanostructures within the bulk of the semiconductor, which demonstrates an improvement in interfacial charge transfer and separation. It involves a distinct core-double shelled Au@carbon dots@CdS hybrid, exhibiting excellent photocatalytic H 2 generation under the visible light radiation. The interfacial engineering between the plasmonic nucleus and the semiconductor shell has been performed by the incorporation of carbon dots as faster charge channels. The effective driving force for plasmon-enhanced bulk charge separation of semiconductors and the unhindered interfacial charge transmission derived from carbon dots have been demonstrated by the use of steady state surface photovoltage (SPV) and transient state surface photovoltage (TPV) methods, as well as some intrinsic kinetics information of interfacial photoexcited charge carriers transfer processes.
研究领域:
材料科学
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光催化
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纳米技术
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Xiqing Liu,Tao Wang,Yongqing Wang
Fluorescence technology enabled highly sensitive, real-time and multi-scenario detection of lysozyme (Lys). However, fluorescent nanomaterials suffer from aggregation-induced quenching, environmental interference and lack of selective recognition capability. In this work, the ZIF-8 was used as a framework to support red and blue fluorescence quantum dots for constructing ratiometric fluorescence sensor. At the same time, combined with molecular imprinting technology, a Molecular Imprinting Polymers (MIPs)-based ratiometric fluorescence sensor was designed for improving the sensitive and selective. The MIPs-based ratiometric fluorescence sensor exhibited highly sensitively and selectively for the detection of lysozyme. Benefited from ratiometric design, the sensor could realize the effect of visual detection of Lys and the limit of detection (LOD) was reached 0.048 mg/L. The HPLC method was used to further confirm the sensor has the potential for practical application. Furthermore, to the demand of an affordable and portable strategy for visual detection Lys, a dexterous and inexpensive test paper was made in this work.
研究领域:
分析化学
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纳米技术
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荧光传感
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材料科学
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生物传感
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环境监测
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 43
·24308-24314
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IF 12.732
Mingyue Jiang,Yue Yuan,Yuchen Fang,Shouxin Liu,Jian Li,Zhijun Chen,Qiuying Pang,Shujun Li
Using light-harvesting materials to enhance natural photosynthesis is attracting much attention in both materials and plant research. The working efficiency of most light-harvesting materials is, however, compromised by a narrow light-harvesting range (either ultraviolet (UV) only, or near-infrared (NIR) only) and a short lifetime of the excited state. We have now developed a new light-harvesting material (UCNP@CDs) from upconverting nanoparticles (UCNPs) and carbon dots (CDs), which has good photon up- and down-converting properties, because of the UCNPs and CDs, respectively. UCNP@CDs efficiently absorbed and converted both UV and NIR light to visible light, with a long lifetime for the excited state. UCNP@CDs was incorporated into a carboxymethylcellulose (CMC) matrix to produce a light-harvesting film that enhances natural photosynthesis, both by isolated chloroplasts and by living plants. Our rationally designed UCNP@CDs/CMC composite light-harvesting film was able to enhance photosynthesis by Arabidopsis thaliana by ∼12%.
研究领域:
材料科学
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植物生物学
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生物物理学
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DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2024
·Vol. 22
·期 1
·1-23
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IF 10.6
Li Haiqiu,Dou Yichen,Yang Hang,Xing Hanlin,Zhu Cheng,Wang Tao,Xuan Zhaopeng,Yang Mingxi
Background Despite the higher sensitivity of melanoma towards ferroptosis and photodynamic therapy (PDT), the lack of efficient ferroptosis inducers and the poor solubility of photosensitizers restrict their synergistic strategies. With unique advantages, carbon dots (CDs) are expected to serve as innovative building blocks for combination therapy of cancers. Results Herein, an ferroptosis/PDT integrated nanoplatform for melanoma therapy is constructed based on chlorin e6-modified Fe ions-doped carbon dots (Fe-CDs@Ce6). As a novel type of iron-carbon hybrid nanoparticles, the as-prepared Fe-CDs can selectively activate ferroptosis, prevent angiogenesis and inhibit the migration of mouse skin melanoma cells (B16), but have no toxicity to normal cells. The nano-conjugated structures facilitate not only the aqueous dispersibility of Ce6, but also the self-accumulation ability of Fe-CDs@Ce6 within melanoma area without requiring extra targets. Moreover, the therapeutic effects of Fe-CDs@Ce6 are synergistically enhanced due to the increased GSH depletion by PDT and the elevated singlet oxygen ( 1 O 2 ) production efficiency by Fe-CDs. When combined with laser irradiation, the tumor growth can be significantly suppressed by Fe-CDs@Ce6 through cyclic administration. The T 2 -weighted magnetic resonance imaging (MRI) capability of Fe-CDs@Ce6 also reveals their potentials for cancer diagnosis and navigation therapy. Conclusions Our findings indicate the multifunctionality of Fe-CDs@Ce6 in effectively combining ferroptosis/PDT therapy, tumor targeting and MRI imaging, which enables Fe-CDs@Ce6 to become promising biocompatible nanoplatform for the treatment of melanoma. Graphic Abstract
研究领域:
纳米技术
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癌症治疗
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生物医学工程
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材料科学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
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2019
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IF 6.35
Yun Ying Cheng,Yi Fen Xie,Chun Mei Li,Yuan Fang Li,Cheng Zhi Huang
Förster resonance energy transfer (FRET) by using fluorescent carbon dots (CDs) as energy donors shows potential for biosensing and bioimaging. However, it remains underused and underestimated for CDs as a building block for FRET owing to the low efficiency and complex operation originating from the surface modification of CDs. To overcome these limitations, herein we develop a novel FRET soft nanoball (fretSNB) in which thousands of green CDs and black hole quencher 2 (BHQ-2) dyes are loaded, and FRET occurs from CDs to BHQ-2 dyes with the consequence of effective fluorescence quenching. These fretSNBs can be ruptured in the presence of phospholipase A2 (PLA2) released in a process of duplex-specific nuclease (DSN)-assisted target recycling amplification (TRA), making the fluorescence of CDs recovered. Thus, a dual amplification strategy is successfully developed for amplified detection of microribonucleic acids (miRNAs) in the concentration range 0.025–10 nM with a limit of detection (3σ) reaching 16.5 pM which is about 515 times lower than without fretSNBs. In addition, the developed strategy exhibits high selectivity for discrimination of a single nucleotide difference and capability to detect miRNAs extracted from cells, suggesting excellent potential in biomedical analysis and clinical diagnosis.
研究领域:
生物化学
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分子生物学
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分析化学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
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2019
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IF 5.383
Zhonghua Yu,Lingting Huang,Jialun Chen,Ying Tang,Biyun Xia,Dianping Tang
This work designed a new photoelectrochemical (PEC) immunoassay for the ultrasensitive detection of alpha-fetoprotein (AFP) based on the flower-like β-In 2 S 3 @carbon dots (CDs). The photocurrent of the as-prepared heterogeneous nanostructure was enhanced significantly under ultraviolet (UV), visible (Vis) and near-infrared (NIR) irradiation thanks to the more generation of carriers and less electron-hole pairs recombination with CDs. The three-layer sandwich-like immunocomplex would be formed upon the target AFP existed, the ascorbic acid 2-phosphate (AA2P) was subsequently transformed into ascorbic acid (AA) owing to the catalysis of alkaline phosphatase-conjugated rabbit polyclonal anti-human AFP (ALP-Ab2). Without additional applied voltage, the photocurrent of the β-In 2 S 3 @CDs-modified electrode was positively correlated with the increasing AA level in the detection cell. Under optimal conditions, the developed PEC immunosensing platform exhibited good reproducibility and high sensitivity for the determination of target AFP within a dynamic working range from 0.5 to 50 ng mL −1 at a detection limit of 37.9 pg mL −1 . In addition, the method accuracy relative to human AFP ELISA kit was evaluated by analyzing human serum specimens, and a good match between two methods was obtained. Such the increasing photocurrent through full-spectrum responsive mode gives a new horizon to develop highly sensitive PEC immunoassay in early clinical diagnosis by monitoring disease-related biomarkers.
研究领域:
分析化学
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生物医学工程
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临床诊断
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Yanqin Wang,Yu Zhu,Xuehui Zhang,Fengbo Zhu,Yi-Xian Qin,Weiyi Chen,Qiang Zheng
It is quite urgent to develop a smart and high through-put confidential information storage, protection, and display platform based on the fluorescent hydrogels that could exhibit diverse fluorescent variation behavior during each stimulus-based shape memory and recovery process. Herein, it proposed an effective approach to develop a novel fluorescent composite gel with Fe 3+ , pH, and glucose-dependent diversity fluorescence variation and shape memory behavior. For this composite gel system, based on the reversible coordination interactions between Fe 3+ and carboxylic acid groups of carboxymethyl cellulose (CMC), boric acid groups of carbon dots (CDs), and hydroxyl groups of PVA , it can stabilize and memorize the temporary shapes under the stimulus of Fe 3+ and pH, respectively. Meanwhile, the fluorescence of the CDs within the gels can also exhibit diversity variation behaviors during each shape recovery process. Furthermore, the compositions of the composite gel were optimized to realize relatively high efficiency of shape recovery and fluorescence variation under each type of stimulus. In summary, this study presented a universal strategy for multi-shape memory hydrogels with diverse fluorescence variation properties which exhibited prominent prospective in the field of information encryption with high-level security.
研究领域:
材料科学
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化学
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纳米技术
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信息安全
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产品关联
DOI
高影响因子
POLYMER TESTING
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2019
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IF 2.943
Di Yang,Junkai Ren,Jiwei Li,Qinglin Wang,Qiu Wang,Zheng Xie,Xiaozhong Qu
Herein we report on a biluminophore fast-responding pressure sensitive coating with a bi-layer structure prepared by a non-sensitive reference base paint and subsequently a classic polymer-ceramic pressure sensitive paint (PSP). The coating procedure is fully sprayable and allows the separation of the two luminophores in each layer to prevent their interference that may affect the pressure responsibility. The major advance is the use of sol-gel process of tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) to make the bottom reference layer which ensures the spreading and affinity of the top PSP, composed of a room-temperature vulcanizing silicone rubber (RTV), so that very thin PSP layer, i.e. less than 5 μm, was achieved. Besides, silane-functionalized carbon dots (CDs) was selected as the reference probe, for it could be well-incorporated with the TEOS/MTES matrix, and gained high loading level and hence strong luminescence of the basecoat to overcome the attenuation effect of the top PSP layer. The resultant biluminophore bi-layer fast-responding PSP (denoted as Fast bi-PSP) showed two completed separated emissions with λ max at 430 and 600 nm for the incorporated CDs and the oxygen sensitive ruthenium complex dye, which enables the utility of intensity ratio from blue and red luminescence for the measurement of surface pressure by following Stern-Volmer relationship. Using a shock tube , the response time of the Fast bi-PSP coating was determined to be 0.4–0.6 ms according to the chemical composition . The ability of the coating for monitoring the dynamic evolution of full-field surface pressure was demonstrated on sample plates at attack angles of 0° and 5°. Our work suggests a facile but efficient way for the future design of self-referenced photoluminescent non-contact surface pressure sensing systems.
研究领域:
航空航天工程
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材料科学
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光学传感
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DOI
高影响因子
危险品化学品经营许可证（带存储）