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Structures and Properties of Three solvent-dependent Chiral Compounds Based on N-Benzoyl-L-glutamic Acid

Chinese Journal of Chemistry 2016年第12期34卷 1335-1343页

作者： Yajing Shi Na Li Huihua Song Haitao Yu College of Chemistry and Material Sciences Hebei Normal University Shijiazhuang Hebei 050024 China

Three solvent-dependent chiral copper（II） compounds, {[Cu2（bzgluO）2（HzO）2]-4HzO}n （1）, {[Cu2（bzgluO）2-（DMSO）2].H2O}, （2） and [Cuz（bzgluO）2（DMF）2], （3）（H2bzgluO=N-benzoyl-L-glutamic acid） have been synthe-sized under ambient temperature conditions and characterized by elemental analysis, IR spectra, UV spectra, ther- mogravimetric analysis, powder X-ray diffraction （PXRD） and single-crystal X-ray diffraction. Compounds 1 and 2 both crystallize in the orthorhombic space group P212121. Compound 3 crystallizes in the tetragonal space group P43. Compound 1 exhibits a ladder-like 1D chain structure, which is extended by hydrogen-bonding interactions to form a 3D supramolecular network. Compounds 2 and 3 both give a diamond-like 3D structure. Besides, there are hydrogen-bonding interactions in 2. The structural difference indicates that the solvent system plays a crucial role in modulating structures of coordination compounds. Circular dichroism （CD） and the magnetic properties of the compounds have also been investigated.

关键词： N-benzoyl-L-glutamic acid chiral copper(Ⅱ) compounds solvent-dependent magnetic properties

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Synthesis of carbon dots with a tunable photoluminescence and their applications for the detection of acetone and hydrogen peroxide

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Chinese Chemical Letters 2020年第2期31卷 487-493页

作者： Shitong Cui Yanfen Wu Yao Liu Qingwen Guan Yida Zhang Yilin Zhang Song Luo Meng Xu Juncheng Wang State Key Laboratory of Heavy Oil Processing China University of Petroleum-BeijingBeijing 102249China Research Institute for New Materials Technology Chongqing University of Arts and SciencesChongqing 402160China Stomatology Department of the General Department of OrthopedicHospital of Chinese PLABeijing 100853China

Carbon dots(CDs) with multi-color emissive properties and a high photoluminescent quantum yield(PLQY) have attracted great attention recently due to their potential applications in chemical,environmental,biological and photo-electronic ***-dependent effect in photoluminescence provides a facial and effective approach to tune the emission of *** this study,green emissive nitrogen-doped carbon dots(N-CDs) are synthesized from p-hydroquinone and ethylenediamine through a simple hydrothermal *** as-prepared N-CDs possess a robust excitation-independent green luminescence and a high PLQY of up to 15.9%.Further spectroscopic characterization indicates that the high PLQY is achieved by the balance of nitrogen doping states and the surface passivation extent in *** N-CDs also exhibit solvent-dependent multi-color emissive property and distinct PLQY in different solvents(the maximum can reach up to 25.3%).Furthermore,the as-prepared N-CDs are applied as fluorescence probes to detect acetone and H2O2 in *** method has exhibited a low detection limit of acetone(less than 0.1 %) and a quick and linear response to the H_2O_2 with the concentration from 0 to 120 μmol/*** work broadens the knowledge of applying CDs as probes in the bio and chemical sensing fields.

关键词： Carbon dots Photoluminescence quantum yield solvent-dependent emissions Biosensors Acetone Fenton reaction

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