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| 1 | New deep eutectic solvents composed of crown ether, hydroxide and polyethylene glycol for extraction of non-basic N-compounds显示文摘Here we firstly report a series of new deep eutectic solvents(DESs) induced by small amounts of crown ether complex and mainly formed by polyethylene glycol. These DESs not only presented the ultra-deep extraction of non-basic N-compounds from fuel oils, but also opened up the possibility of other new applications in chemistry and materials science. | Mohammad Chand Ali Ruirui Liu Jia Chen Tianpei Cai Haijuan Zhang Zhan Li Honglin Zhai Hongdeng Qiu | 2019 | Chinese Chemical Letters2019，30，4： | 5 |
| 2 | Facile synthesis of enzyme functional metal-organic framework for colorimetric detecting H_2O_2 and ascorbic acid显示文摘In this work,a metal-organic frameworks material MIL-88 was prepared easily using solvent-thermal method,and was first found to have catalytic activities similar to those of biological enzymes such as catalase and peroxidase.The material was characterized by XRD,SEM,TEM,EDX,FT-IR techniques and an N_2 adsorption method.It exhibited peroxidase-like activity through catalytic oxidation of the peroxidase substrate 3,3',5,5'-tetramethylbenzidine(TMB) in the presence of H_2O_2,producing a blue-colored solution.Under optimal conditions,the absorbance at 652 nm is linearly correlated with the concentration of H_2O_2 from 2.0×10^(-6) mol/L to 2.03×10^(-5) mol/L(R^2=0.981) with a detection limit of 5.62×10^(-7) mol/L(S/N=3).More importantly,a sensitive and selective method for ascorbic acid detection was developed using this material as a catalyst.The analytical method for ascorbic acid detection was observed to have a linear range from 2.57×10^(-6) mol/L to 1.01×10^(-5) mol/L(R^2=0.989) with a detection limit of 1.03×10^(-6) mol/L(S/N=3).This work suggests MOFs have advantages of preparing biomimetic catalysts and extends applications of the functional MOFs in the field of biosensor. | Cunji Gao Hongmei Zhu Jia Chen Hongdeng Qiu | 2017 | Chinese Chemical Letters2017，28，5： | 5 |
| 3 | Recent progress in nanomaterial-enhanced fluorescence polarization/anisotropy sensors显示文摘As a promising signaling transduction approach, fluorescence polarization(FP)/fluorescence anisotropy(FA), provides a powerful quantitative tool for the rotational motion of fluorescently labeled molecules in chemical or biological homogeneous systems. Unlike fluorescence intensity, FP/FA is almost independent the concentration or quantum of fluorophores, but they are highly dependent on the size or molecular weight of the molecules or materials attached to fluorophores. Recently, significant progress in FP/FA was made, due to the introduction of some nanomaterials as FP/FA enhancers. The detection sensitivity is thus greatly improved by using nanomaterials as FP/FA enhancers, and nanomaterial-based FP/FA is currently used successfully in immunoassay, and analysis of protein, nucleic acid, small molecule and metal ion.Nanomaterial-based FP/FA provides a new kind of strategy to design fluorescent sensors and establishes innovative analytical methods. In this review, we summarize the scientific publications in the field of FP/FA sensor in recent five years, and first introduce the recent progress of FP/FA sensor based on nanomaterial. Subsequently, the various analytical applications of FP/FA based on nanomaterial are discussed. Finally, we provide perspectives on the current challenges and future prospects in this promising field. | Jia Chen Juewen Liu Xingguo Chen Hongdeng Qiu | 2019 | Chinese Chemical Letters2019，30，9： | 4 |
| 4 | A novel off-on fluorescent probe for specific detection and imaging of cysteine in live cells and in vivo显示文摘Cysteine(Cys)plays a pivotal role in many physiological and pathological processes,including detoxification and protein synthesis.The abnormal levels of Cys are linked to many diseases.In this study,a novel red-emitting off-on fluorescent probe Cys-TCF was masterly constructed for discriminative detection of Cys.After a series of experimental assessment,Cys-TCF displayed higher selectivity and sensitivity for Cys over other biothilols with a low detection limit(0.04μmol/L).More notably,the probe was also successfully applied to image Cys in live cells and live zebrafishes with low cytotoxicity. | Baoxin Zhang Haijuan Zhang Miao Zhong Song Wang Qianhe Xu Dong-Hyung Cho Hongdeng Qiu | 2020 | Chinese Chemical Letters2020，31，1： | 4 |
| 5 | Basic deep eutectic solvents as reactant, template and solvents for ultra-fast preparation of transition metal oxide nanomaterials显示文摘Developing a new type of deep eutectic solvents(DESs)is indispensable for expanding their application in various fields.Here,we report a series of new highly basic DESs.FT-IR,quantitative 1 H NMR,MD simulation and physical properties show that these basic liquids are made up of hydroxide acceptor of alkali metal hydroxides in which the hydrogen bonding interactions coordinate the donor.These DESs can be played three roles as new solvents,template and reactant for facile and ultra-fast preparation of transition metal oxide nanomaterials such as NiCo2 O4,MnCo2 O4,NiMn2 O4,CoCu2 O4 and Co3 O4 under mild condition.This work shows one of the low energy-intensive methods for nanomaterial preparation.These initial findings of basic deep eutectic solvents provide a potential applicability around the systematic development of transition metal oxide nanosheets. | Jia Chen Mohammad Chand Ali Ruirui Liu Jean Claude Munyemana Zhan Li Honglin Zhai Hongdeng Qiu | 2020 | Chinese Chemical Letters2020，31，6： | 2 |
| 6 | Poly(1-allylimidazole)-grafted silica, a new specific stationary phase for reversed-phase and anion-exchange liquid chromatography 显示文摘 | Sun Min Qiu Hongdeng Wang Licheng | 2009 | Journal of Chromatography A2009，1216，18： | 1 |
| 7 | Novel imidazolium stationary phase for high-performance liquid chromatography显示文摘 | QIU Hongdeng JIANG Shengxiang LIU Xia ZHAO Liang | 2006 | J Chromatogr:A2006，1116，12： | 1 |
| 8 | The Interplay Between Social Cynicism Beliefs and Person–Organization Fit on Work‐Related Attitudes Among Chinese Employees显示文摘 | HongDeng YanjunGuan Michael HarrisBond ZhiyongZhang TianHu | 2011 | Journal of Applied Social Psychology2011，，1： | 1 |
| 9 | N-Methylimidazolium anion-exchange stationary phase for high-performance liquid chromatography显示文摘 | QIU Hongdeng JIANG Shengxiang LIU Xia | 2006 | J Chromatogr:A2006，1103，2： | 1 |
| 10 | Novel imidazolium stationary phase for high-performance liquid chromatography显示文摘 | Hongdeng Qiu Shengxiang Jiang Xia Liu Liang Zhao | 2006 | Journal of Chromatography A2006，，1： | 1 |
| 11 | N-Methylimidazolium Anion- Exchange Stationary Phase for High-Performance Liquid Chromatography显示文摘 | Hongdeng Q Shengxiang J Xia L | 2006 | Chromatography A2006，1103，： | 1 |
| 12 | Chiral pillar[n]arenes:Conformation inversion,material preparation and applications显示文摘Chiral pillar[n]arenes have shown great research value and application prospect in construction of chiral materials and chiral applications,due to their inherent planar chiral configurations,chiral recognition ability,easy modification and highly symmetric hydrophobic cavity.This review systematically summarized the conformation inversion factors of planar chiral pillar[5]arenes(pR/p S),such as solvents,temperature,substituent size,alkyl chains,chiral and achiral guest molecules.We firstly introduced the applications of chiral pillar[n]arenes for constructing chiral materials and pointed out that planar conformation inversion showed a great potential role in constructing chiral materials.Then,we mainly concluded the chiral applications of chiral and planar chiral pillar[n]arenes like chiral enantiomer analysis by circular dichroism,electrochemistry or chiral fluorescence sensing.From this review,we found that the inherent planar chiral conformation of chiral pillar[n]arenes have played a very important role in chiral field in the future. | Chengxiang Shi Hui Li Xiaofeng Shi Liang Zhao Hongdeng Qiu | 2022 | Chinese Chemical Letters2022，33，8： | 1 |
| 13 | Porous graphene decorated silica as a new stationary phase for separation of sulfanilamide compounds in hydrophilic interaction chromatography显示文摘Porous graphene(PG) has potential applications in numerous fields because of the existence of nanopores in the plane. In this study, porous graphene decorated silica microspheres(Sil-PG) were successfully fabricated by assembling PG onto the silica particles surface in deep eutectic solvents(DESs).Experimental results demonstrate that this new stationary phase can facilitate the separation of six sulfonamides compounds in hydrophilic chromatographic conditions. The successful synthesis of the SilPG stationary phase provides a basis for the application of porous graphene-modified materials as the stationary phase for liquid chromatography, and offers the possibility to broaden the application of PG in the field of chromatography. | Lijun Song Haijuan Zhang Tianpei Cai Jia Chen Zhan Li Ming Guan Hongdeng Qiu | 2019 | Chinese Chemical Letters2019，30，4： | 1 |
| 14 | Synthesis and modification of spherical/hollow metal-organic frameworks for efficient extraction of sulfonamides in aqueous environments显示文摘In this study,two novel spherical/hollow metal-organic frameworks were successfully synthesized,and further modified by a mild non-covalent modification strategy with dopamine and 1,4-benzenedithiol(BDT)as polymeric monomers to obtain pB DT@PDA-Ni-MOF and p BDT@PDA-Ni/Co-MOF,respectively.The results showed that the above MOFs possessed extremely fast adsorption rates and ideal adsorption capacities for sulfonamides(SAs)and the modified MOFs exhibited enhanced adsorption capacities for SAs owing to a large number of additional functional groups.Then,benefit of their regular morphology and size,a facile syringe-assisted dispersive solid phase extraction(S-DSPE)method was developed for efficient detection of SAs,which will provide a powerful tool for monitoring trace level of SAs in aqueous environment. | Yongxing Sun Kaijun Quan Jia Chen Hui Li Xin Li Zuguang Li Hongdeng Qiu | 2023 | Chinese Chemical Letters2023，34，9： | 0 |
| 15 | Augmented virtual environment: fusion of real-time video and 3D models in the digital earth system显示文摘An Augmented virtual environment(AVE)is concerned with the fusion of real-time video with 3D models or scenes so as to augment the virtual environment.In this paper,a new approach to establish an AVE with a wide field of view is proposed,including real-time video projection,multiple video texture fusion and 3D visualization of moving objects.A new diagonally weighted algorithm is proposed to smooth the apparent gaps within the overlapping area between the two adjacent videos.A visualization method for the location and trajectory of a moving virtual object is proposed to display the moving object and its trajectory in the 3D virtual environment.The experimental results showed that the proposed set of algorithms are able to fuse multiple real-time videos with 3D models efficiently,and the experiment runs a 3D scene containing two million triangles and six real-time videos at around 55 frames per second on a laptop with 1GB of graphics card memory.In addition,a realistic AVE with a wide field of view was created based on the Digital Earth Science Platform by fusing three videos with a complex indoor virtual scene,visualizing a moving object and drawing its trajectory in the real time. | Hongdeng Jian Jingjuan Liao Xiangtao Fan Zhuxin Xue | 2017 | International Journal of Digital Earth2017，10，12： | 0 |
| 16 | Nanomaterials for analytical chemistry显示文摘Over the last few decades, nanomaterials have been playing increasingly important roles in developing analytical biosensors. With a large specific surface area, nanomaterials offer various surfaces for immobilization of biological probes. In addition, taking advantage of their magnetic, catalytic and various optical properties such as fluorescence emission and quenching, light absorption and scattering, Raman enhancement, localized surface plasmon resonance, versatile signaling and signal amplification methods can be realized. | Juewen Liu Hongdeng Qiu | 2019 | Chinese Chemical Letters2019，30，9： | 0 |
| 17 | Facile and sensitive S1 endonuclease activity and inhibition assay using positively-charged Ag nanorods显示文摘In this work, we designed a facile and promising strategy for fluorescence determination of S1 endonuclease activity and inhibition based on fluorescence resonance energy transfer(FRET) between positively Ag nanorods(AgNRs) and negatively-charged ROX-labeled sing-stranded DNA(ROX-ssDNA). In the absence of Sl endonuclease, the fluorescence signal of the ROX-ssDNA was efficiently quenched when the ROX-ssDNA was adsorbed on the surface of AgNRs via strong electrostatic interaction. However, upon addition of different concentration of Sl endonuclease, the fluorescence was gradually restored owing to the reduction of FRET efficiency caused by S1 endonuclease specific cleavage ROX-ssDNA into short fragments, which reduced the electrostatic interaction between AgNRs and short oligonucleotide fragment. This assay strategy exhibited a high sensitivity and excellent specificity for S1 endonuclease with a detection limit of 0.004 U/mL and a dynamic concentration range from 0.01 U/mL to 5.0 U/mL. In addition, the capabilities for screening of S1 endonuclease inhibitors and S1 endonuclease detection from complex biological matrixes were also verified. | Mei Li Jia Chen Jiaping Pan Zuliang Huang Hongdeng Qiu | 2019 | Chinese Chemical Letters2019，30，3： | 0 |
| 18 | 3D Path prediction of moving objects in a video-augmented indoor virtual environment显示文摘Augmented virtual environments(AVE)combine real-time videos with 3D scenes in a Digital Earth System or 3D GIS to present dynamic information and a virtual scene simultaneously.AVE can provide solutions for continuous tracking of moving objects,camera scheduling,and path planning in the real world.This paper proposes a novel approach for 3D path prediction of moving objects in a video-augmented indoor virtual environment.The study includes 3D motion analysis of moving objects,multi-path prediction,hierarchical visualization,and path-based multi-camera scheduling.The results show that these methods can give a closed-loop process of 3D path prediction and continuous tracking of moving objects in an AVE.The path analysis algorithms proved accurate and time-efficient,costing less than 1.3 ms to get the optimal path.The experiment ran a 3D scene containing 295,000 triangles at around 35 frames per second on a laptop with 1 GB of graphics card memory,which means the performance of the proposed methods is good enough to maintain high rendering efficiency for a video-augmented indoor virtual scene. | Hongdeng Jian Xiangtao Fan Zhenzhen Yan Mingrui Huang | 2021 | International Journal of Digital Earth2021，14，12： | 0 |
| 19 | GeoGlue: feature matching with self-supervised geometric priors for high-resolution UAV images显示文摘We present GeoGlue,a novel method using high-resolution UAV imagery for accurate feature matching,which is normally challenging due to the complicated scenes.Current feature detection methods are performed without guidance of geometric priors(e.g.,geometric lines),lacking enough attention given to salient geometric features which are indispensable for accurate matching due to their stable existence across views.In this work,geometric lines arefirstly detected by a CNN-based geometry detector(GD)which is pre-trained in a self-supervised manner through automatically generated images.Then,geometric lines are naturally vectorized based on GD and thus non-significant features can be disregarded as judged by their disordered geometric morphology.A graph attention network(GAT)is utilized forfinal feature matching,spanning across the image pair with geometric priors informed by GD.Comprehensive experiments show that GeoGlue outperforms other state-of-the-art methods in feature-matching accuracy and performance stability,achieving pose estimation with maximum rotation and translation errors under 1%in challenging scenes from benchmark datasets,Tanks&Temples and ETH3D.This study also proposes thefirst self-supervised deep-learning model for curved line detection,generating geometric priors for matching so that more attention is put on prominent features and improving the visual effect of 3D reconstruction. | Weijia Bei Xiangtao Fan Hongdeng Jian Xiaoping Du Dongmei Yan | 2023 | International Journal of Digital Earth2023，16，1： | 0 |
| 20 | 在白噪声分析中的广义维里拉普拉斯(英文)显示文摘一类广义维里拉普拉斯,把在白噪声分析构架中通常定义的维里拉普拉斯作为特殊情形而包含. | Yan Huizhao Chun Hongdeng Yu Lingliao (Department of Mathematics Lingling Teachers college Yongzhou Hunan 425006) | 2002 | 数学理论与应用2002，22，3： | 0 |
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