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Chinese Chemical Letters 2022年第1期33卷 547-550页

作者： Yifei Yue Shengnan Liu Ning Zhang Zhongmin Su Dongxia Zhu key laboratory of nanobiosensing and nanobioanalysis at universities of jilin province Department of ChemistryNortheast Normal UniversityChangchun 130024China

We develop the effective modification strategy based on molecular engineering of s-triazine and its derivatives to improve the photoelectric performance of all-inorganic perovskites(AIP)for the first *** surface modification strategy with cyanuric acid successfully increases the PLQY of AIP from 40.55%to 88.15%,and significantly enhances the current of the AIP film under 3 V by almost 20-fold(from4.44 m A to 81.20 m A).This work has proven the effectiveness of improving the photoelectric performances of AIP via s-triazine and its derivatives and also suggested the potential risks of reducing the photoelectric performance of AIP due to inappropriate substituents in conjugated organic ligands.

关键词： All-inorganic perovskites Surface modification s-Triazine Substituents Photoelectric performance

Strategies for Improving the Brightness of Aggregation-Induced Emission Materials at Aggregate Level

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Chinese Journal of Chemistry 2023年第10期41卷 1249-1259页

作者： Yixiong Gui keyao Chen Yan Sun Yonghong Tan Wenshuai Luo Dongxia Zhu Yu Xiong Dingyuan Yan Dong Wang Ben Zhong Tang Center for AIE Research College of Materials Science and EngineeringShenzhen UniversityShenzhenGuangdong 518060China School of Science and Engineering Shenzhen Institute of Molecular Aggregate Science and EngineeringThe Chinese University of Hong KongShenzhenGuangdong 518172China key laboratory of nanobiosensing and nanobioanalysis at universities of jilin province Department of ChemistryNortheast Normal UniversityChangchunJilin 130024China

The brightness of fluorescent agents directly determines the imaging performance as *** various fluorophores,small organic species are promising given its exact purity/composition and excellent ***,chromophores with planar geometry may suffer from the undesirable aggregation-caused quenching(ACQ)***,luminogens showing aggregation-induced emission(AIE)features are preferable as the aggregates which are the most common used *** this review,we mainly focus on the strategies employed for boosting the brightness of AIE-active luminogens(AIEgens).From molecule to mor-phology levels,approaches that regulate electronic transition processes of the molecule or the packing extent of aggregates in order to confine molecular motion,reduceπ-πstacking,disrupt fluorophore-water interactions,etc.,are *** the end,the current challenges and perspectives are briefly *** anticipate that this review will stimulate new insights and more efforts for the advancement of ultrabright AIEgens.

关键词： Aggregation-induced emission Fluorescence brightness Restriction of molecular motion Radiative energy decay Electron transfer π-πstacking

Electrocatalytic water splitting at nitrogen-doped carbon layers-encapsulated nickel cobalt selenide

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Journal of Energy Chemistry 2019年第7期28卷 161-170页

作者： Chuanlai Jiao Xiangjie Bo Ming Zhou key laboratory of nanobiosensing and nanobioanalysis at universities of jilin province Key Laboratory of Polyoxometalate Science of Ministry of EducationNational & Local United Engineering Laboratory for Power Batteries Department of Chemistry Northeast Normal University

Generally,the catalytic overpotentials of hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)are unavoidable because of the low charge *** this work,two strategies of alloying of Co with Ni and enclosing of electrocatalysts with carbonaceous materials were both used to accelerate the catalytic efficiency of cobalt selenide for water *** nitrogen-doped carbon(NC)layer improves the reaction kinetics by efficient charge *** alloying of metal into composited electrocatalysts can modify the electronic properties of host materials,thereby tuning the adsorption behavior of intermediate and improving the electrocatalytic *** expected,Nyquist plots reveal that the charge-transfer resistance(Rct)of nickel cobalt selenide encapsulated into nitrogen-doped carbon layer(CoNiSe/NC-3,Co:Ni=1:1)are just 5 and 9 for HER and OER,respectively,which are much lower than those of CoSe/NC-1(Co:Ni=1:0)(81 and 138)and CoNiSe/NC-3 without NC(CoNiSe-3)(54 and 25).With the high charge transfer and porous structure,CoNiSe/NC-3 shows good performance for both HER and *** current density reaches 10 m A cm-2,only 100 and 270 mV overpotentials are required for HER and OER,*** the potential of 1.65 V,full water splitting also can be catalyzed by Co Ni Se/NC-3 with current density of 20 m A cm-2,suggesting that CoNiSe/NC-3 could be used as replacement for noble metal electrocatalysts.

关键词： Nickel cobalt selenide Nitrogen-doped carbon layer Water splitting Hydrogen evolution reaction Oxygen evolution reaction

Enhancing long-term stability of bio-photoelectrochemical cell by defect engineering of a WO_(3-x) photoanode

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Journal of Energy Chemistry 2023年第5期80卷 584-593,I0013页

作者： Cheng Zhang Xuchao Zheng Yongyue Ning Zihan Li Zhongdong Wu Xiaoyu Feng Gangyong Li Zhongyuan Huang Zongqian Hu College of Textiles and Clothing Xin Jiang UniversityUrumqi 830046XinjiangChina Beijing Institute of Radiation Medicine Beijing 100850China State key laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082HunanChina Department of Chemistry Northeast Normal UniversityChangchun 130024JilinChina key laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education National&Local United Engineering Laboratory for Power BatteriesKey Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin ProvinceAnalysis and Testing CenterDepartment of ChemistryNortheast Normal UniversityChangchun 130024JilinChina Shanghai key laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200241China key laboratory of Hunan province for Advanced Carbon-based Functional Materials School of Chemistry and Chemical EngineeringHunan Institute of Science and TechnologyYueyang 414006HunanChina

Bio-photoelectrochemical cells(BPECs)can further expand the use of conventional biofuel cells for renewable energy,but the poor stability of the photoelectrode still hinders their practical ***,a BPEC capable of long-term operating in a fuel-free model is fabricated by WO3-xphotoanode with oxygen vacancy(Ov)and bilirubin oxidase catalyzed *** construction of Ov on the WO3surface significantly suppresses the dissolution of W species into the electrolyte,and improves the charge separation efficiency and the reaction kinetics during the photoelectrochemical oxygen evolution process,thus enhancing the stability and power output performance of the *** a result,the assembled BPEC can output an open circuit voltage of 0.81 V and deliver a maximum output power of up to 283μW cm^(-2).Impressively,the BPECs maintain 97%of their original power after 36000 s of consecutive discharge under an enclosed *** fuel-free BPEC based on a robust WO3-xphotoanode shows excellent promise for accurate application.

关键词： WO_(3) Oxygen vacancy Oxygen reduction reaction Fuel-free Bio-photoelectrochemical cell

Stripping Voltammetric Analysis of Mercury at Base-treated Graphene Oxide Electrodes

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Chemical Research in Chinese universities 2018年第6期34卷 971-977页

作者： QIU Yaru DONG Lini XIANG Dong LI Li ZHU Liande key laboratory of nanobiosensing and nanobioanalysis at universities of Jihn province School of Chemtstry Northeast Normal University Changchun 130024 P. R. China

According to the Rourke＇s model, graphene oxide（GO） synthesized from the oxidation of graphite actual- ly consisted of partly oxidized graphene sheets and highly oxidized debris（OD）. The OD was strongly adhered to the surface of graphene sheets, while they could be facilely removed by a base-washing procedure. The existence and removal by base-washing of OD were characterized by means of thermogravimetric analysis（TGA）, FTIR spectros- copy, X-ray photoelectron spectroscopy（XPS）, transmission electron microscopy（TEM） and Raman spectroscopy. The adsorption of O13 not only made a great difference to the physical and chemical properties of GO, but also af- fected its electrochemical behavior when it was employed as an electrode material. In this article, we demonstrated that the electrochemical deposition and the subsequent voltammetric stripping analysis of mercury were significantly influenced by the presence of OD. The conseqnence suggests that the presence of OD on the sheets of GO restricts the electrochemical deposition behavior of mercury and further lowers the sensitivity of the voltammetric stripping responses. The sensitivity was observed as 0.78A·L·mo1^-1 at base-washed（bw）-GO/GC（glassy carbon） better than that at as-prepared GO（a-GO）/GC for 0.28 A·L·mo1^-1. The limit of detection was calculated as 2.95 and 0.83 μmol/L before and after removing the OD, respectively. The availability of both electrodes was evaluated by detecting Hg^2＋ in lake water specimens using standard samples recovery.

关键词： Graphene oxide Oxide debris Stripping voltammetry Mercury

Portable and automated analyzer for rapid and high precision in vitro dissolution of drugs

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Journal of Pharmaceutical Analysis 2021年第4期11卷 490-498页

作者： Zhongmei Chi Siqi Zhao Xiujun Cui Yunxiang Feng Li Yang key laboratory of nanobiosensing and nanobioanalysis at universities of jilin province Department of ChemistryNortheast Normal UniversityChangchun130024China Jingke-Oude Science and Education Instruments Co. LtdChangchun130024China

We developed a novel portable and automated dissolution test analyzer for rapid and high precision in vitro dissolution testing of *** analyzer consists of a flow-through-cell drug dissolution system,an automated sequential sampling system,a high-speed capillary electrophoresis(HSCE)system,and a data acquisition *** the high-temporal resolution flow-gating sampling approach with HSCE,which has outstanding advantages of efficient separation and resolution,the analyzer can achieve rapid analysis and exhibits the ability in miniaturization for on-site assessment of different active pharmaceutical *** integrate the flow-through-cell dissolution system with HSCE,a specially designed flow-gating-injection(FGI)interface was *** performance of the analyzer was investigated by analyzing the dissolution of immediate-release drugs including single dose(amoxicillin dispersible tablets)and fixed dose combination(amoxicillin and clavulanate potassium)drug tablets with the high-temporal resolutions of 12 s and 20 s,*** dissolution profiles of different active pharmaceutical ingredients could be simultaneously and automatically monitored with high repeatability and *** analyzer was successfully utilized for the pharmaceutical quality control and bio-relevant dissolution testing,as well as in vivo-in vitro correlation *** portable analyzer is miniaturized,convenient and of low-cost,and will provide a valuable tool for dissolution testing in pharmaceutical research and development.

关键词： Dissolution test analyzer Portable Automated Immediate-release drug Fixed dose combination drug

Amperometric Ascorbic Acid Sensor Based on Disposable Facial Tissues Derived Carbon Aerogels

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Chemical Research in Chinese universities 2020年第1期36卷 139-144页

作者： GU Yanan LIU Jingju ZHOU Ming key laboratory of nanobiosensing and nanobioanalysis at universities of jilin province Key Laboratory of Polyoxometalate Science of Ministry of EducationNational&Local United Engineering Laboratory for Power BatteriesFaculty of ChemistryNortheast Normal UniversityChangchun 130024P.R.China

In this study,the disposable facial tissues derived carbon aerogels(DFTs-CAs)were synthesized using disposable facial tissues as the raw material for fabricating a sensitive amperometric ascorbic acid(AA)*** experimental results indicated that compared to glassy carbon electrode(GCE)and the popular carbon nanotubes modified GCE(CNTs/GCE),DFTs-CAs modified GCE(DFTs-CAs/GCE)exhibited better electrocatalytic activity(i.e.,lower peak potential and higher peak current)for AA electrooxidation and higher analytical performance for AA determination(i.e.,wider linear range,higher sensitivity and lower detection limit),which could be most likely due to the high density of defective sites and large specific surface area of ***,the DFTs-CAs/GCE was used for evaluating the AA level in real samples(i.e.,medical injection dose,vitamin C tablets,fresh orange juice and human urine)and the results are satisfactory.

关键词： Ascorbic acid Biomass Disposable facial tissues derived carbon aerogel Electrochemical sensor

Proton-Conducting Polyoxometalates as Redox Electrolytes Synergistically Boosting the Performance of Self-Healing Solid-State Supercapacitors with Polyaniline

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CCS Chemistry 2021年第3期3卷 1649-1658页

作者： Dongming Cheng Bo Li Sai Sun Li-Jie Zhu Ying Li Xing-Long Wu Hong-Ying Zang key Lab of Polyoxometalate Science of Ministry of EducationKey Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin ProvinceFaculty of ChemistryNortheast Normal UniversityChangchun 130024

Energy storage devices with high volumetric and gravimetric capacitance are in urgent demand due to the booming market of portable and wearable *** redox-active molecules as electrolytes is a strategy to improve the capacitance and energy density of solid-state supercapacitors(SCs).In this study,polyoxometalates(POMs)are applied as proton conductors and redox mediators in polyvinyl alcohol(PVA)electrolytes,which increase the capacitance of obtained SCs with polyaniline(PANI).H_(3)PMo_(12)O_(40)-loaded PANI electrodes provide pseudocapacitance with an eight-electron Faraday reaction in a charge–discharge *** has rarely been reported in SCs *** largest capacitance of SCs with H_(3)PMo_(12)O_(40)and H_(3)PW_(12)O_(40)as electrolytes is 7.69 F/cm^(2)(3840 F/g)based on a single electrode at 0.5 mA/cm^(2).In addition,POM electrolytes exhibit excellent self-healing ability,which is attributed to the rich hydrogen-bonding network between POMs and *** study demonstrates that the capacitance of solid-state SCs is improved by using molecular redox-active electrolytes and showcases the potential of applying this strategy to other energy storage devices in the future.

关键词： polyoxometalates solid-state supercapacitors redox electrolytes proton conductors self-healing

Design and synthesis of integrally structured Ni3N nanosheets/carbon microfibers/Ni3N nanosheets for efficient full water splitting catalysis

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Design and synthesis of integrally structured Ni3N nanosheet...