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Journal ArticleDOI: 10.1039/D0CC08403D

AIEgen modulated per-functionalized flower-like IRMOF-3 frameworks with tunable light emission and excellent sensing properties.

04 Mar 2021-Chemical Communications (Royal Society of Chemistry (RSC))-Vol. 57, Iss: 19, pp 2392-2395
Abstract: A series of functional IRMOF-3 frameworks with solid-state luminescence and tuneable light emission (from 490 to 608 nm) have been synthesized by per-functionalizing AIE-active Schiff-bases with zinc These precursor AIE-active ligands endowed the functional frameworks with boosted fluorescence emission efficiencies (from 016% to 103%) IRMOF-3-h revealed a flower-like morphology attributed to the formation of J-aggregates, and could be used as a fluorescent probe for sensitive detection of copper(ii) (135 pM) and thiols (subnanomole)

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Topics: Light emission (63%), Luminescence (54%), Fluorescence (53%)
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Open accessJournal ArticleDOI: 10.3390/MOLECULES26144176
Rosita Diana1, Barbara Panunzi1Institutions (1)
09 Jul 2021-Molecules
Abstract: Aggregation-induced emission (AIE) compounds display a photophysical phenomenon in which the aggregate state exhibits stronger emission than the isolated units. The common term of “AIEgens” was coined to describe compounds undergoing the AIE effect. Due to the recent interest in AIEgens, the search for novel hybrid organic–inorganic compounds with unique luminescence properties in the aggregate phase is a relevant goal. In this perspective, the abundant, inexpensive, and nontoxic d10 zinc cation offers unique opportunities for building AIE active fluorophores, sensing probes, and bioimaging tools. Considering the novelty of the topic, relevant examples collected in the last 5 years (2016–2021) through scientific production can be considered fully representative of the state-of-the-art. Starting from the simple phenomenological approach and considering different typological and chemical units and structures, we focused on zinc-based AIEgens offering synthetic novelty, research completeness, and relevant applications. A special section was devoted to Zn(II)-based AIEgens for living cell imaging as the novel technological frontier in biology and medicine.

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3 Citations


Journal ArticleDOI: 10.1039/D1CC01672E
Ying Liu1, Jianmin Lu2, Qianxiao Zhang1, Yajie Bai1  +4 moreInstitutions (3)
Abstract: Ag-decorated ultrathin Ni-MOF on Cu2O was fabricated for the first time. The charge-transfer dynamics at the heterostructure was studied by ultrafast transient absorption spectroscopy in depth. An NH3 yield rate of 4.63 μg h−1 cm−2 with a faradaic efficiency of 24.3% has been achieved. DFT calculations further supported to further comprehend the nitrogen reduction reaction mechanism.

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3 Citations


Journal ArticleDOI: 10.1007/S10876-021-02081-W
Fayun Chen1, Fayun Chen2, Hai-Yang Zhang1, Guangzhao Li  +1 moreInstitutions (2)
Abstract: Two novel complexes, namely [Cu2(L)2] (1) and [Ni4(L)4] (2, H2L = 1-{3-[(5-bromo-2-hydroxy-benzylidene)-amino]-2-hydroxyphenyl}-ethanone) were synthesized through solvothermal methods at the same condition. The complexes 1 and 2 were characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction. 1 is dinuclear copper complex while 2 is a cubane nickel cluster. The L ligand displays two different coordination modes. One is the μ1-L-κ3N1:O1:N2 coordination mode and the other is μ3-L-κ6O1:O2:O2:O2:N1:O3 coordination mode. Magnetic studies reveal that the complex 2 displays dominant antiferromagnetic intracluster interactions between the NiII ions through the μ3 oxide bridges with g = 2.29, J = − 0.939 cm−1, and zJ′ = − 0.333 cm−1. Hirshfeld surface analysis revealed that H···H interaction was the dominant intermolecular interaction.

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Topics: Ligand (53%), Cubane (52%), Schiff base (52%) ... read more

1 Citations


Journal ArticleDOI: 10.1039/D1AY00324K
Hexiang Li1, Fawei Zhu1, Jun Xiang, Fangbin Wang  +2 moreInstitutions (1)
27 May 2021-Analytical Methods
Abstract: We herein report a facile and scalable strategy for the fabrication of a metal-organic framework (MOF) based composite by in situ growing ZIF-8 on gold nanoparticle (AuNP) loaded magnetic carbon nanotubes (mCNTs). AuNPs were firstly loaded on PEI (polyethylenimine) modified mCNTs by electrostatic forces, and then AuNPs/mCNTs were encapsulated into the ZIF-8 frame through in situ self-assembling of zinc ions and 2-methylimidazole. The morphology, spectroscopy and structural properties of the AuNP/mCNT@ZIF-8 nanocomposites were systematically characterized. The conductivity-strain tests revealed that the in situ insertion of AuNPs/mCNTs in ZIF-8 could not only shorten the electron transfer distance between active sites and mCNTs, but also increase the dispersion of mCNTs, which would benefit the electron and mass transfer. Besides, by adopting the AuNP/mCNT@ZIF-8 nanocomposite-modified glassy carbon electrode (GCE) as the working electrode, a novel electrochemical sensor was successfully developed for the detection of bisphenol A (BPA). A linear range of BPA detection from 1 μM to 100 μM with a limit of detection of 690 nM was favorably obtained. Moreover, the developed sensor exhibited satisfactory reproducibility and superior stability with excellent anti-interference ability, and was successfully applied in the detection of BPA in real samples.

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1 Citations


Open accessJournal ArticleDOI: 10.3389/FMATS.2021.750247
Abstract: Zinc (II) cation is an environmentally friendly metal, less expensive, easy to dispose of, and managed. Highly engineered symmetric systems can be built using zinc (II) atoms as the metal nodes of hybrid organic-inorganic supramolecular structures. In biological contexts, luminescent zinc-based nanoprobes are in growing demand. Specifically, they are currently employed to detect biologically and environmentally relevant analytes, in therapeutic drug delivery, and for bioimaging and diagnostic techniques monitoring aspects of cellular functions. This review will provide a systematic and consequential approach to zinc-based nanoprobes, including zinc-based MOFs and other zinc-based organized nanoparticles. A progression from detecting the biological target to the intracellular sensing/marking/carriage has been followed. A selection of significant cutting-edge articles collected in the last five years has been discussed, based on the structural pattern and sensing performance, with special notice to living cell bioimaging as the most targeted and desirable application.

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27 results found


Journal ArticleDOI: 10.1039/B105159H
Jingdong Luo1, Zhiliang Xie1, Jacky W. Y. Lam1, Lin Cheng1  +7 moreInstitutions (2)
Abstract: Aggregation greatly boosts emission efficiency of the silole, turning it from a weak luminophor into a strong emitter.

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4,631 Citations


Journal ArticleDOI: 10.1021/CR200101D
08 Feb 2012-Chemical Reviews
Topics: Luminescent Measurements (67%)

4,507 Citations


Journal ArticleDOI: 10.1021/ACS.CHEMREV.5B00263
Ju Mei1, Nelson L. C. Leung1, Ryan T. K. Kwok1, Jacky W. Y. Lam1  +1 moreInstitutions (2)
22 Oct 2015-Chemical Reviews
Abstract: Ju Mei,†,‡,∥ Nelson L. C. Leung,†,‡,∥ Ryan T. K. Kwok,†,‡ Jacky W. Y. Lam,†,‡ and Ben Zhong Tang*,†,‡,§ †HKUST-Shenzhen Research Institute, Hi-Tech Park, Nanshan, Shenzhen 518057, China ‡Department of Chemistry, HKUST Jockey Club Institute for Advanced Study, Institute of Molecular Functional Materials, Division of Biomedical Engineering, State Key Laboratory of Molecular Neuroscience, Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China

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4,166 Citations


Journal ArticleDOI: 10.1002/ADMA.201200164
Sen Liu, Jingqi Tian1, Lei Wang, Yingwei Zhang  +5 moreInstitutions (2)
17 Apr 2012-Advanced Materials
Abstract: Dr. S. Liu , J. Tian , L. Wang , Zhang , Dr. . Y X. Qin , Luo , . Y Prof. X. Sun State Key Lab of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Changchun 130022, Jilin, China; Fax: ( + 86) 431-85262065 E-mail: sunxp@ciac.jl.cn J. Tian Graduate School of the Chinese Academy of Sciences Beijing 100039, China Prof. A. M. Asiri , A. O. Al-Youbi , Prof. X. Sun Chemistry Department, Faculty of Science King Abdulaziz University Jeddah 21589, Saudi Arabia Prof. A. M. Asiri , A. O. Al-Youbi , Prof. X. Sun Center of Excellence for Advanced Materials ResearchKing Abdulaziz University Jeddah 21589, Saudi Arabia

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1,110 Citations


Journal ArticleDOI: 10.1002/ADMA.200904056
Wang Zhang Yuan1, Ping Lu1, Shuming Chen1, Jacky Wing Yip Lam1  +6 moreInstitutions (3)
18 May 2010-Advanced Materials
Abstract: The development of efficient luminescent materials in the solid state is of both scientific and technological interest. An obstacle to their development is the notorious aggregation-caused quenching (ACQ) effect: the emission of conventional luminophores is often weakened in the solid state in comparison to in solution, due to aggregate formation in the condensed phase. [1‐3] The ACQ problem must be properly tackled, because the luminophores are commonly used as solid films in their practical applications. Various chemical, physical, and engineering approaches have been taken to frustrate luminophore aggregation. [4,5] The attachment of bulky alicyclics, encapsulation by amphiphilic surfactants, and blending with transparent polymers are widely used methods to impede aggregate formation. These processes, however, are often accompanied by severe side effects. The steric effects of bulky alicyclics, for example, can twist the conformations of the chromophoric units and jeopardize the electronic conjugation in the luminophores, and the electronic effects of the saturated surfactants and nonconjugated polymers can dilute the luminophore density and obstruct the charge transport in electroluminescence (EL) devices. The current approaches to the problem are thus far from ideal, because the ACQ effect is alleviated at the expense of other useful properties of the luminophores. A win‐win strategy would be the elimination of the ACQ effect without sacrificing other functional properties of the luminophores. In the work reported here, we have developed such a new approach. Triphenylamine (TPA) and its derivatives are luminescent when dissolved in good solvents [6] for them but become less emissive when aggregated in the solid state, and are therefore typical ACQ luminophores. [7] For

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Topics: Luminophore (58%)

692 Citations