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  1. Article ; Online: Structural stability, dihydrogen bonding, and pressure-induced polymorphic transformations in hydrazine borane.

    Guan, Rongfeng / Wang, Pan / Ji, Yujin / Li, Youyong / Song, Yang

    Physical chemistry chemical physics : PCCP

    2023  Volume 25, Issue 33, Page(s) 21860–21867

    Abstract: Hydrazine borane ( ... ...

    Abstract Hydrazine borane (N
    Language English
    Publishing date 2023-08-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d3cp01301d
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  2. Article ; Online: Achieving Simplified and Tunable Flexibility in Carborane-Based Emitters for Quantitative Vapochromic VOC Sensing.

    Wang, Zhaojin / Chen, Bo / Zhang, Huike / Hong, Daocheng / Guan, Rongfeng

    Analytical chemistry

    2023  Volume 95, Issue 16, Page(s) 6637–6645

    Abstract: Photoluminescence (PL) sensing of volatile organic compounds (VOCs) represents a convenient and economic detection method toward air pollutants. However, tetraphenylethylene (TPE)-based and recent carborane (Cb)-based sensors retained multiple sites that ...

    Abstract Photoluminescence (PL) sensing of volatile organic compounds (VOCs) represents a convenient and economic detection method toward air pollutants. However, tetraphenylethylene (TPE)-based and recent carborane (Cb)-based sensors retained multiple sites that are responsive to VOC stimulation, making quantitative PL sensing rather challenging. Rendering the simplified and tunable flexibility in the PL sensors is key to achieve the quantitative target. In this work, we proposed a dimeric model of Cb-based emitters to deal with flexibility. Three emissive dibenzothiophene (DBT)-alkynylated carboranes (
    Language English
    Publishing date 2023-04-11
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.2c05816
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4033: Show issues Location:
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  3. Article ; Online: Achieving Simplified and Tunable Flexibility in Carborane-Based Emitters for Quantitative Vapochromic VOC Sensing

    Wang, Zhaojin / Chen, Bo / Zhang, Huike / Hong, Daocheng / Guan, Rongfeng

    Analytical Chemistry. 2023 Apr. 11, v. 95, no. 16, p. 6637–6645

    2023  , Page(s) 6637

    Abstract: Photoluminescence (PL) sensing of volatile organic compounds (VOCs) represents a convenient and economic detection method toward air pollutants. However, tetraphenylethylene (TPE)-based and recent carborane (Cb)-based sensors retained multiple sites that ...

    Abstract Photoluminescence (PL) sensing of volatile organic compounds (VOCs) represents a convenient and economic detection method toward air pollutants. However, tetraphenylethylene (TPE)-based and recent carborane (Cb)-based sensors retained multiple sites that are responsive to VOC stimulation, making quantitative PL sensing rather challenging. Rendering the simplified and tunable flexibility in the PL sensors is key to achieve the quantitative target. In this work, we proposed a dimeric model of Cb-based emitters to deal with flexibility. Three emissive dibenzothiophene (DBT)-alkynylated carboranes (Cb-1/2/3) were designed and synthesized. Among them, Cb-3 contributed green and green–yellow emission in the crystals, as well as yellow and orange emission in the VOC-incorporated films, together unfolding its vapochromic properties. Crystallographic studies revealed that Cb-3 molecules were invariably dimerized in an interlocked fashion and the redshift in PL was caused by the successive through-space conjugation of DBT moieties. Theoretical calculations verified the thermodynamics stability of Cb-3 dimers and suggested that DBT could individually rotate different angles under the simulation of VOCs. Based on the above findings, we introduced DBT-alkynylated carboranes to detect the VOCs and established linear relationships between the photon energy at the PL maxima and the concentrations of benzene and tetrahydrofuran (THF) vapors. Aside from the successful implementation of quantitative vapochromic sensing, the fast response (6 s) and recovery (3∼5 s), as well as the good reusability, were also evidenced in the sensing of THF vapors.
    Keywords air ; analytical chemistry ; benzene ; energy ; models ; photoluminescence ; photons ; tetrahydrofuran ; thermodynamics ; volatile organic compounds
    Language English
    Dates of publication 2023-0411
    Size p. 6637–6645
    Publishing place American Chemical Society
    Document type Article ; Online
    ZDB-ID 1508-8
    ISSN 1520-6882 ; 0003-2700
    ISSN (online) 1520-6882
    ISSN 0003-2700
    DOI 10.1021/acs.analchem.2c05816
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    In stock of ZB MED Bonn / Germany

    Z 4' 52/94: Show issues
    Z 2.9: Show issues

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  4. Article ; Online: A novel two-dimensional Janus TiSiGeN

    Sun, Zhe / Guan, Rongfeng / Li, Huimin / Feng, Shilong / Ma, Lin / Shen, Qianqian / Ling, Lixia / Jia, Husheng / Xue, Jinbo

    Physical chemistry chemical physics : PCCP

    2024  Volume 26, Issue 15, Page(s) 12199–12209

    Abstract: The photocatalytic nitrogen reduction reaction (pNRR) is a clean technology that converts ... ...

    Abstract The photocatalytic nitrogen reduction reaction (pNRR) is a clean technology that converts H
    Language English
    Publishing date 2024-04-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d3cp06302j
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Recovering the Thermally Activated Delayed Fluorescence in Aggregation-Induced Emitters of Carborane.

    Wang, Zhaojin / Zhao, Juewen / Muddassir, Mohd / Guan, Rongfeng / Tao, Silu

    Inorganic chemistry

    2021  Volume 60, Issue 7, Page(s) 4705–4716

    Abstract: The aggregation-induced emission (AIE) behaviors of carborane-based hybrid emitters have been extensively reported, while their combinations with the thermally activated delayed fluorescence (TADF) are still scarce. We designed and synthesized three ... ...

    Abstract The aggregation-induced emission (AIE) behaviors of carborane-based hybrid emitters have been extensively reported, while their combinations with the thermally activated delayed fluorescence (TADF) are still scarce. We designed and synthesized three Janus carboranes (the chemical structures resemble the double-faced god, Janus)
    Language English
    Publishing date 2021-03-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.0c03664
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Chiral MOF Derived Wearable Logic Sensor for Intuitive Discrimination of Physiologically Active Enantiomer.

    Yang, Xiu-Li / Yang, Zheng-Ying / Shao, Rong / Guan, Rong-Feng / Dong, Su-Li / Xie, Ming-Hua

    Advanced materials (Deerfield Beach, Fla.)

    2023  Volume 35, Issue 38, Page(s) e2304046

    Abstract: Chiral sensors have attracted growing interest due to their application in health monitoring. However, rational design of wearable logic chiral sensors remains a great challenge. In this work, a dual responsive chiral sensor RT@CDMOF is prepared through ... ...

    Abstract Chiral sensors have attracted growing interest due to their application in health monitoring. However, rational design of wearable logic chiral sensors remains a great challenge. In this work, a dual responsive chiral sensor RT@CDMOF is prepared through in situ self-assembly of chiral γ-cyclodextrin metal-organic framework (CDMOF), rhodamine 6G hydrazide (RGH), and tetracyanovinylindane (TCN). The embedded RGH and TCN inherit the chirality of host CDMOF, producing dual changes both in fluorescence and reflectance. RT@CDMOF is explored as a dual channel sensor for chiral discrimination of lactate enantiomers. Comprehensive mechanistic studies reveal the chiral binding process, and carboxylate dissociation is confirmed by impedance and solid-state
    MeSH term(s) Metal-Organic Frameworks ; Stereoisomerism ; Cyclodextrins ; Carboxylic Acids ; Wearable Electronic Devices
    Chemical Substances Metal-Organic Frameworks ; Cyclodextrins ; Carboxylic Acids
    Language English
    Publishing date 2023-07-21
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202304046
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  7. Article: Pressure-Induced Polymorphic Transformations of Ethylenediamine Bisborane

    Guan, Rongfeng / Wang, Pan / Song, Yang / Staroverov, Viktor N.

    Journal of physical chemistry. 2021 Aug. 19, v. 125, no. 34

    2021  

    Abstract: Pressure-induced phase transitions of crystalline ethylenediamine bisborane (EDAB), a prospective hydrogen storage material, are investigated using vibrational spectroscopy, X-ray diffraction, evolutionary crystal structure prediction, and density ... ...

    Abstract Pressure-induced phase transitions of crystalline ethylenediamine bisborane (EDAB), a prospective hydrogen storage material, are investigated using vibrational spectroscopy, X-ray diffraction, evolutionary crystal structure prediction, and density functional theory. The results indicate that EDAB undergoes two transitions in the 0–17 GPa pressure range: the first one is near 1 GPa, from the orthorhombic ambient-pressure Pbca structure (phase I) to a monoclinic structure of P2₁/c symmetry (phase II); the second is near 7 GPa, from phase II to another P2₁/c structure (phase III). The latter coexists with phase II and remains the most stable form of EDAB up to at least 15 GPa. Unlike phase I, phases II and III have multiple dihydrogen bonds between neighboring EDAB molecules. The findings provide information for evaluating EDAB as a candidate material for hydrogen storage.
    Keywords X-ray diffraction ; crystal structure ; density functional theory ; ethylenediamines ; hydrogen ; prediction ; spectroscopy
    Language English
    Dates of publication 2021-0819
    Size p. 18614-18622.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1932-7455
    DOI 10.1021/acs.jpcc.1c05593
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  8. Article ; Online: Preparation of highly dispersed Ni single-atom doped ultrathin g-C

    Ma, Lin / Guan, Rongfeng / Kang, Wenxiang / Sun, Zhe / Li, Huimin / Li, Qiurong / Shen, Qianqian / Chen, Chaoqiu / Liu, Xuguang / Jia, Husheng / Xue, Jinbo

    Journal of colloid and interface science

    2024  Volume 660, Page(s) 381–392

    Abstract: Single-atom photocatalysts can modulate the utilization of photons and facilitate the migration of photogenerated carriers. However, the preparation of single-atom uniformly doped photocatalysts is still a challenging topic. Herein, we propose the ... ...

    Abstract Single-atom photocatalysts can modulate the utilization of photons and facilitate the migration of photogenerated carriers. However, the preparation of single-atom uniformly doped photocatalysts is still a challenging topic. Herein, we propose the preparation of Ni single-atom doped g-C
    Language English
    Publishing date 2024-01-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 241597-5
    ISSN 1095-7103 ; 0021-9797
    ISSN (online) 1095-7103
    ISSN 0021-9797
    DOI 10.1016/j.jcis.2024.01.023
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    In stock of ZB MED Bonn / Germany

    Z 71/707: Show issues

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  9. Article ; Online: Chiral UiO-MOFs based QCM sensors for enantioselective discrimination of hazardous biomolecule.

    Yang, Xiu-Li / Zang, Rong-Bin / Shao, Rong / Guan, Rong-Feng / Xie, Ming-Hua

    Journal of hazardous materials

    2021  Volume 413, Page(s) 125467

    Abstract: Developments of enantioselective devices for discriminating bio-enantiomers is of significant importance. Due to the vital role of Cysteine (Cys) in biological processes and the hazardous effect of its D-enantiomer, discriminating Cys enantiomers without ...

    Abstract Developments of enantioselective devices for discriminating bio-enantiomers is of significant importance. Due to the vital role of Cysteine (Cys) in biological processes and the hazardous effect of its D-enantiomer, discriminating Cys enantiomers without auxiliary enzyme is highly wanted. In this work, a pair of UiO-MOF enantiomers (UiO-tart) have been fabricated through post-modification, which could be further fabricated into enantiomeric sensing devices (UiO-tart@Au). By employing the Quartz Crystal Microbalance (QCM) technology, gravimetric discrimination of Cys enantiomers could be achieved. UiO-tart@Au is highly enantioselective, and the afforded enantioselective factor (5.97 ± 0.54) represents the best performance reported ever. In the fabricated device, MOF layer acts as the chiral selector for specific Cys enantiomer, and the reaction between the captured Cys enantiomer and Au results in the mass growth of the system. Solid-phase extraction (SPE) gives an e.e. value of 71.6 ± 3.8%, substantially confirming the chiral-selector role of UiO-tart. DFT calculations indicate that enantiomeric H-bonding effect and greater reaction enthalpy should be the reason. To the best of our knowledge, this work represents the first example of chiral tartaric acid derived MOF sensors for enantioselective discrimination of Cys, suggesting a promising potential of developing chiral MOFs based devices for enhanced enantioselective application.
    MeSH term(s) Cysteine ; Quartz Crystal Microbalance Techniques ; Solid Phase Extraction ; Stereoisomerism
    Chemical Substances Cysteine (K848JZ4886)
    Language English
    Publishing date 2021-02-19
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2021.125467
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  10. Article: Energy storage and hydrogen production by proton conducting solid oxide electrolysis cells with a novel heterogeneous design

    Lei, Libin / Zhang, Jihao / Guan, Rongfeng / Liu, Jianping / Chen, Fanglin / Tao, Zetian

    Energy conversion and management. 2020 Aug. 15, v. 218

    2020  

    Abstract: The proton-conducting solid oxide electrolysis cell is a promising technology for energy storage and hydrogen production. However, because of the aggressive humid condition in the air electrode side, the stability of electrolysis cells is still a concern. ...

    Abstract The proton-conducting solid oxide electrolysis cell is a promising technology for energy storage and hydrogen production. However, because of the aggressive humid condition in the air electrode side, the stability of electrolysis cells is still a concern. In addition, the energy efficiency needs further improvement before its practical application. In this work, considering both stability and energy efficiency, a novel heterogeneous design is proposed for proton-conducting solid oxide electrolysis cells. In this heterogeneous design, the merits of proton-conducting materials can be taken advantage of and the drawbacks of proton-conducting materials can be circumvented synchronously, resulting in better stability and higher efficiency of electrolysis cells. The feasibility and advantages of the heterogeneous design are demonstrated in electrolysis cells with yttrium and zirconium co-doped barium cerate-nickel as the fuel electrode material and yttrium-doped barium zirconate as the electrolyte material by experiment and modeling. The experimental results demonstrate that compared with the conventional homogeneous design, this novel design can efficiently improve the proton conductivity of the yttrium-doped barium zirconate electrolyte (from 0.88 × 10⁻³ S cm⁻¹ to 2.13 × 10⁻³ S cm⁻¹ at 873 K) and slightly improve the ionic transport number of the electrolyte (from 0.941 to 0.964 at 873 K), resulting in better electrochemical performance. The electrolysis cells with this design also show good stability. Moreover, the simulation results show that the faradaic efficiency and energy efficiency of electrolysis cells are improved by applying this novel design. These impressive results demonstrate that heterogeneous design is a rational design for high-performance and efficient proton-conducting solid oxide electrolysis cell.
    Keywords administrative management ; air ; barium ; cells ; design ; electrochemistry ; electrodes ; electrolysis ; electrolytes ; energy efficiency ; fuels ; hydrogen production ; materials ; models ; storage ; yttrium ; zirconium
    Language English
    Dates of publication 2020-0815
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-light
    ZDB-ID 2000891-0
    ISSN 0196-8904
    ISSN 0196-8904
    DOI 10.1016/j.enconman.2020.113044
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