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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 | 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 |
| 9 | 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 |
| 10 | 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 |
| 11 | 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 |
| 12 | 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 |
| 13 | 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 |
| 14 | 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 |
| 15 | Chiral phenethylamine synergistic tricarboxylic acid modified β-cyclodextrin immobilized on porous silica for enantioseparation显示文摘In this work, a series of chiral phenethylamine synergistic tricarboxylic acid modified β-cyclodextrin bonded stationary phase for high performance liquid chromatography(HPLC) were synthesized via a simple one-pot synthesis approach. Various racemates(aryl alcohols, flavanones, triazoles, benzoin, etc.) were well separated on the tricarboxylic acid modified chiral stationary phases in both normal and reversed modes with good reproducibility and stability, and the influence of mobile phase composition on resolution(R_(s)) were deeply investigated. The RSD values of Rsfor repeatability and column-to-column were below 1.28% and 3.05%, respectively. Hence, the fabrication of tricarboxylic acid modified chiral stationary phase(CSPs) is a new efficient strategy to improve the application of β-cyclodextrin as CSPs in the field of chromatography. | Hui Li Xiaoping Wang Chengxiang Shi Liang Zhao Zuguang Li Hongdeng Qiu | 2023 | Chinese Chemical Letters2023，34，3： | 0 |
| 16 | Responsive switchable deep eutectic solvents:A review显示文摘Deep eutectic solvents(DESs)have drawn considerable attention as a new type of green solvent since they were reported.Subsequent studies have shown that DESs have the potential to be used as“designable”solvents,which means that the precursors of DESs with different structures and properties can be screened to customize DESs for specific functions.Researchers have found that during the sample preparation process involving DESs,the specific properties of some“smart”DESs can be switched by directing external driving forces,leading to a reversible phase transition of the target solution.These'smart'DESs are called switchable deep eutectic solvents(SDESs).The advent of SDES simplifies the sample pretreatment steps,reduces the use of organic solvents,and makes solvents easy to recycle,which matches the concept of green and sustainable chemistry.Compared with the number of previous experimental studies,the reviews and summaries on SDESs are rare.Therefore,this review made a summary of the concept and research progress of SDESs based on some related works in the past decade,including composition and type,characterization,switching mechanism,etc.It is expected to provide a certain reference and guidance for the subsequent in-depth research of SDESs in the analytical sample pretreatment. | Jingyu Zhang Shang Li Liping Yao Yuexing Yi Lingqi Shen Zuguang Li Hongdeng Qiu | 2023 | Chinese Chemical Letters2023，34，5： | 0 |
| 17 | Octadecylamine and glucose-coderived hydrophobic carbon dots-modified porous silica for chromatographic separation显示文摘A hydrophobic carbon dots(Glc-OCDs)derived from octadecylamine and glucose were successfully synthesized for the first time and then grafted onto the porous silica surface by the“Nano-on-Micro”strategy,which was served as a new stationary phase(Sil-Glc-OCDs)for reversed-phase liquid chromatography.The structure of this stationary phase was carefully verified by laser scanning confocal microscope,Fourier transform infrared spectrometry,elemental analysis,contact angle measurement,etc.Several analytes including seven polycyclic aromatic hydrocarbons,eight alkylbenzenes,eight phenols and seven sulfonamides can be well separated on this stationary phase.Better separation performance for certain analytes over commercial C_(18) column was obtained.Interestingly,this stationary phase exhibited excellent chromatographic selectivity in the separation of the isomers of tert‑butylbenzene,sec‑butylbenzene,isobutylbenzene and n-butylbenzene.In addition,this new Sil-Glc-OCDs column was also applied for detection of calycosin-7-glucoside,ononin,calycosin,formononetin,genistein and isorhamnetin in the extract of Radix Astragali,which were found that the concentration was 0.15 g/L,0.088 g/L,0.14 g/L,0.086 g/L,0.18 g/L and 0.29 g/L,respectively.We believe that this CDs-grafted silica materials are promising for chromatographic separation. | Jia Chen Ning Yuan Danni Jiang Qian Lei Bei Liu Weiyang Tang Kyung Ho Row Hongdeng Qiu | 2021 | Chinese Chemical Letters2021，32，11： | 0 |
| 18 | Synthesis strategies of covalent organic frameworks: An overview from nonconventional heating methods and reaction media显示文摘Covalent organic frameworks(COFs), as an emerging class of porous crystalline materials constructed by covalent links between the building monomers, have gained tremendous attention. Over the past 15 years, COFs have made rapid progress and substantial development in the chemistry and materials fields. However, the synthesis of COFs has been dominated by solvothermal methods for a long time and it usually involves high temperature, high pressure and toxic organic solvents, which created many challenges for environmental considerations. Recently,the exploration of new approaches for facile fabrication of COFs has aroused extensive interest. Hence, in this review, we comprehensively describe the synthetic strategies of COFs from the aspects of nonconventional heating methods and reaction media. In addition, the advantages,limitations and properties of the preparation methods are compared. Finally, we outline the main challenges and development prospects of the synthesis of COFs in the future and propose some possible solutions. | Jing Xiao Jia Chen Juewen Liu Hirotaka Ihara Hongdeng Qiu | 2023 | Green Energy & Environment2023，8，6： | 0 |
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