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  1. No Access

    Article

    Reducing background absorbance via a double-lock strategy for detection of alkaline phosphatase and α-fetoprotein

    Lowering the background signal for more sensitive analysis of determinands is as important as amplifying the target signal. The photoinduced oxidase of fluorescein has been reported, which can catalyze the oxi...

    Xuemei Hu, Zixuan Wei, Menghuan Tang, Yijuan Long, Huzhi Zheng in Microchimica Acta (2020)

  2. No Access

    Article

    Bifunctional antibody and copper-based metal-organic framework nanocomposites for colorimetric α-fetoprotein sensing

    Cu2+ are found to greatly reduce the photoinduced oxidase activity of fluorescein and then inhibit the chromogenic reaction catalyzed by fluorescein. A simple colorimetric assay for Cu2+ is established. Based on ...

    Xuemei Hu, Zixuan Wei, Chaoqun Sun, Yijuan Long, Huzhi Zheng in Microchimica Acta (2020)

  3. No Access

    Article

    One-pot synthesis of a composite consisting of the enzyme ficin and a zinc(II)-2-methylimidazole metal organic framework with enhanced peroxidase activity for colorimetric detection for glucose

    An enzyme-metal organic framework (MOF) composite with saucer-like structure was prepared via one-pot synthesis from ficin (a cysteine proteolytic enzyme with POx activity), zinc(II) ions and 2-methylimidazole...

    Yadi Pan, Yanjiao Pang, Ying Shi, Wen Zheng, Yijuan Long, Yuming Huang… in Microchimica Acta (2019)

  4. No Access

    Article

    Hollow carbon dots labeled with FITC or TRITC for use in fluorescent cellular imaging

    Hollow carbon dots (HCDs) were prepared by a solvothermal method and conjugated to either tetramethyl rhodamine isothiocyanate (TRITC) or fluorescein-5-isothiocyanate (FITC). This resulted in HCDs with bright ...

    Menghuan Tang, ** Teng, Yijuan Long, **liang Wang, Li** Liang… in Microchimica Acta (2018)

  5. Article

    Open Access

    Intrinsic Peroxidase-like Activity of Ficin

    Ficin is classified as a sulfhydryl protease isolated from the latex of fig trees. In most cases, a particular enzyme fits a few types of substrate and catalyzes one type of reaction. In this investigation, we...

    Yufang Yang, Dongjun Shen, Yijuan Long, Zhixiong **e, Huzhi Zheng in Scientific Reports (2017)

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  6. No Access

    Article

    Maintenance of the activity of mono-dispersed Au and Ag nano-particles embedded in agar gel for ion-sensing and antimicrobial applications

    Composite materials were synthesized by encapsulating Au and Ag nanoparticles in an agar gel matrix. These metallic nano-particles were found to be separately stored, so their optical, catalytic, and antibacte...

    Yijuan Long, Yi Wang, Yue Liu, Qiaoling Zeng, Yuanfang Li in Science China Chemistry (2015)

  7. No Access

    Article

    Gold Nanoparticles as a Probe for Prion Determination via Resonance Light Scattering Method

    Dihydrolipoic acid (DHLA) modified gold nanoparticles (AuNPs) were used as a highly selective probe for the detection of prion proteins. We discovered that AuNPs undergo aggregation selectively in the presence...

    **ao**ao Huang, YiJuan Long, HaiJie Zhang, QinLong Wang, Rui Zhu… in Analytical Sciences (2012)

  8. No Access

    Article

    A Carbon Dots-based Fluorescence Turn-on Method for DNA Determination

    In the present work, we found that methylene blue (MB) caused an efficient quenching of the fluorescence of carbon dots (CDots). However, as ct-DNA was added, the fluorescence of CDots was restored reversibly....

    WenJun Bai, HuZhi Zheng, YiJuan Long, **aoJiao Mao, Mei Gao… in Analytical Sciences (2011)

  9. No Access

    Article

    Rapid Determination of Nanotoxicity Using Luminous Bacteria

    A new luminescence-based toxicity test using luminous bacteria as a reporting agent has been developed to determine EC50 of different nanomaterials, such as gold nanoparticles and carbon nanotubes on living organ...

    Huzhi Zheng, Li Liu, Yihui Lu, Yijuan Long, Lingling Wang… in Analytical Sciences (2010)