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Chinese Chemical Letters 2024年第2期35卷 374-379页

作者： Yonghui Sun Linnan Jiang Yong Chen Yu Liu College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Nankai UniversityTianjin 300071China

The construction of hydrogels with good mechanical properties and phosphorescent properties is full of ***,we report a supramolecular phosphorescent hydrogel with long lifetime,high tensile strength and self-healing property,which can be easily constructed through in-situ thermalinitiated polymerization of isocyanatoethyl acrylate-modifiedβ-cyclodextrin(β-CD-DA)and acrylatemodified adamantane(Ad-DA),acrylic acid(AA),followed by the non-covalent association with carbon dots(CNDs).The lifetime of phosphorescent hydrogel can reach 1261 ms at room temperature,and the quantum yield is 11%.Importantly,through the efficient triplet to singlet Förster resonance energy transfer(TS-FRET),the phosphorescent hydrogel shows the good phosphorescence energy transfer property for organic dyes Rhodamine B and Eosin Y with the delayed fluorescence lifetime up to 730 ms and 585 ms as well as the energy transfer efficiency(Φ_(ET))up to 99.9%and 99.3%,***,owing to the host-guest interactions betweenβ-CD-DA and Ad-DA,the three-dimensional cross-linked network phosphorescent hydrogel can be easily stretched to 18 times of its original length,and can achieve self-healing of the cut surfaces within 30 *** results will expand the scope of phosphorescent materials and provide new ideas and opportunities for materials science.

关键词： Room temperature phosphorescence Hydrogel Phosphorescence energy transfer Cyclodextrin Supramolecular interaction

Silk fibroin-based flexible pressure sensors:processing and application

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Materials Futures 2024年第3期3卷 71-94页

作者： Muhan Chen Junhong Liu Yidi Hu Yujie Wu Chun-Yan Tang Kai Ke Wei Yang College of Polymer Science and Engineering Sichuan UniversityState Key Laboratory of Polymer Materials EngineeringChengdu 610065SichuanPeople’s Republic of China

With the advent of the internet of things and artificial intelligence,flexible and portable pressure sensors have shown great application potential in human-computer interaction,personalized medicine and other *** comparison with traditional inorganic materials,flexible polymeric materials conformable to the human body are more suitable for the fabrication of wearable pressure *** the consumption of a huge amount of flexible wearable electronics in near future,it is necessary to turn their attention to biodegradable polymers for the fabrication of flexible pressure sensors toward the development requirement of green and sustainable *** this paper,the structure and properties of silk fibroin(SF)are introduced,and the source and research progress of the piezoelectric properties of SF are systematically *** addition,this paper summarizes the advance in the studies on SF-based capacitive,resistive,triboelectric,and piezoelectric sensors reported in recent years,and focuses on their fabrication methods and ***,this paper also puts forward the future development trend of high-efficiency fabrication and corresponding application of SF-based piezoelectric *** offers new insights into the design and fabrication of green and biodegradable bioelectronics for in vitro and in vivo sensing applications.

关键词： silk fibroin flexible pressure sensor piezoelectric biodegradable healthcare

Higgs boson decays h→MZ in the TNMSSM

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Chinese Physics C 2024年第9期48卷 21-35页

作者： Huai-Cong Hu Zhao-Yang Zhang Ning-Yu Zhu Hai-Xiang Chen School of Physical Science and Technology Guangxi UniversityNanning 530004China

We study the SM-like Higgs boson decays h→MZ in the triplet extended NMSSM(TNMSSM),where M is a vector meson(ρ,ω,φ,J/ψ,Υ).Compared to the minimal supersymmetric standard model(MSSM),the TNMSSM includes two new SU(2) triplets with hypercharge ±1 and an SM gauge singlet,which are coupled to each *** indirect contributions to the h→MZ decays are produced from the effective hyZ vertex,and they are more important than the direct *** results of this work could encourage a detection on h→Zγ at the future high energy colliders for exploring new physics beyond the SM.

关键词： supersymmetry Higgs boson decay

Left-Symmetric Algebra Structures on the Planar Galilean Conformal Algebra

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Algebra Colloquium 2019年第2期26卷 285-308页

作者： Lili Chi Jiancai Sun Department of Mathematics Shanghai University Shanghai 200444 China

In this paper, we mainly determine the compatible left-symmetric algebra structures on the planar Galilean conformal algebra with some natural grading conditions. The results of earlier work on left-symmetric algebra structures on the twisted Heisenberg-Virasoro algebra play an important role in determining these compatible structures. As a corollary, any such left-symmetric algebra contains an infinite-dimensional non-trivial subalgebra that is also a submodule of the regular module.

关键词： planar Galilean conformal algebra twisted Heisenberg-Virasoro algebra leftsymme trie algebra

Multiple-Stimuli Responsive and Tunable Luminescent Suprarnolecular Assembly by Oligo（p-phenylvinylene） and Surfactant

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Chinese Journal of Chemistry 2018年第6期36卷 526-530页

作者： Xu-Man Chen Yong Chen Yu Liu College of Chemistry State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China

Achieving multicolor photoluminescence under multiple stimuli response based on a single fluorescent compound remains a great challenge. Herein, we report a novel multicolor fluorescent supramolecular assembly, which was constructed from surfactant sodium dodecyl sulfate （SLS） and fluorescent compound 1 bearing a rigid symmetrical acceptor-donor-acceptor structure. The luminescence property of 1/SLS assembly showed the multiple stimuli response towards temperature, cyclodextrin complexation and UV light irradiation, exhibiting the tunable emission wavelengths from 490 nm to 590 nm and the multicolor photoluminescence including cyan, green, yellow and orange. Furthermore, this assembly could be used in light writing owing to the fast fluorescence change within 15 s. These results could provide a convenient and useful method for fabricating smart tunable photoluminescent materials.

关键词： tunable photoluminescence supramolecular assembly multiple stimuli response oligo(p-phenylvinylene) surfactant

Synthesis and Crystal Structure of [Cis-1,10phenanthroline-palladium(Ⅱ)(THF)_2]dinitrate (THF = Tetrahydrofuran)

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Chinese Journal of Structural Chemistry 2003年第5期22卷 547-549页

作者： HUANG Hui YU Shu-Yan② (State Key Laboratory of Polymer Physics and Chemistry, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China) Institute of Chemistry The Chinese Academy of Sciences State Key Laborator6y of Polymer Physics and Chemistry Joint Laboratory of Polymer Science and Materials CAS 北京 100080

A mononuclear complex, cis-1,10-phenanthroline-palladium(Ⅱ)(THF)2]dinitrate (THF = tetrahydrofuran) [Pd(C10H8N2)(C4H8O)2](NO3)2 1, has been prepared and structurally characterized by single-crystal X-ray diffraction. The crystal belongs to monoclinic system, space group P21/c with a = 7.881(1), b = 27.371(3), c = 10.178(1) ? ?= 103.313(3)? V = 2136.5(4) 3, Mr = 554.83, Dc = 1.725 g/cm3, Z = 4, F(000) = 1128 and (MoK) = 0.926 mm-1. The structure was refined to R = 0.0678 and wR = 0.1651 for 1687 observed reflections with I > 2(I). It is revealed that the central Pd(Ⅱ) ion in the title complex is bonded to two THF and two phenanthroline molecules in a cis-configuration to form the coordination geometry, deviating slightly from the square plane.

关键词： crystal structure Pd(Ⅱ) complex 1,10-phenanthroline

Ionothermal Synthesis and Characterization of a New Selenidomercurate

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Chinese Journal of Structural Chemistry 2019年第9期38卷 1557-1563页

作者： LI Wei-An ZHANG Dong BAI Bing ZHOU Chuang-Yu JIANG Jiang FENG Mei-Ling College of Chemistry Fuzhou UniversityFuzhou 350002China State Key Laboratory of Structural Chemistry Fujian Institute of Research onthe Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry Fujian Agriculture and Forestry UniversityFuzhou 350002China

A new selenidomercurate compound, namely(bmmim)2Hg(Se4)2(1, bmmim = 1-butyl-2,3-dimethylimidazolium), has been ionothermally synthesized by the reaction of HgSe, Sb and Se in a mixed solvent of the ionic liquid of(bmmim)Cl and methylamine aqueous solution. The(bmmim)Cl acted as an efficient structure-directing agent(SDA) and reactive solvent in the formation of 1. Single-crystal X-ray diffraction study reveals that 1 crystallizes in the monoclinic space group C2/c with a = 17.9540(10), b = 10.8863(5), c = 16.4728(9)?, β = 110.024(2)°, V = 3025.0(3) ?3, Z = 4, D-1 c = 2.500 mg·m-3, F(000) = 2088, μ = 14.729 mm, R = 0.0186 and wR = 0.0503(I > 2σ(I)). The structure of compound 1 features a bamboo dragonfly-like anion unit of [Hg(Se4)2]2-in which the Hg atom binds to two(Se4)2-groups to form two five-membered rings. The thermal stability and optical property of compound 1 were also investigated.

关键词： ionothermal synthesis crystal structure selenidomercurate

Studies on the Synthesis of Morphinan Alkaloid:Preparation of the Key Allylic Silyl Ether Precursor

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Chinese Chemical Letters 2005年第11期16卷 1445-1447页

作者： Zhen Lei SONG Yong Qiang TU Shuan Hu GAO Yi Jun JIANG Shu Yu ZHANG State Key Laboratory of Applied Organic Chemistry ＆ Department of Chemistry Lanzhou University Lanzhou 730000

A convergent strategy to the key allylic silyl ether precursor 4 in our synthetic efforts toward morphinan alkaloid is presented. The vital step is the selective 1,2-addition of the organocerium agent of 6 to ketene 5.

关键词： Morphinan alkaloid Weinreb amide cerium chloride synthesis.

Structure Engineered g-C3N4 Nano-Sheets by Switching the Pyrolysis Gas Atmosphere for Enhanced Photo-Catalytic Degradation

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Chinese Journal of Chemistry 2017年第2期35卷 173-182页

作者： Yuanyuan Chai Qianqian Liu Lu Zhang Jia Ren Wei-Lin Dai Department of Chemistry & Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan University Shanghai 200433 China

We developed a new one step approach to synthesize g-C3N4 nano-sheets by direct thermal pyrolysis process of urea in NH3 atmosphere. For the first time, the influence of the preparation gas atmosphere on the composition, crystalline and polymerization degree, and the activity of the g-C3N4 synthesized from thermal condensation of urea was investigated. Impressively, the g-C3N4 nano-sheets obtained under NH3 gas atmosphere exhibited much superi- or photo-catalytic activities to the prepared g-C3N4 in air or N2, and the rate of the g-C3N4-NH3 was about 5 times higher than that on g-C3N4-N2 sample. The detailed characterization analysis revealed that NH3 thermal pyrolysis atmosphere contributed to the polymerization degree and the formation of the layer with a more regular structure due to the efficiently extending of the conjugated π-conjugative system, which was favorable to the transfer of the photo-induced charge carriers. Furthermore, we studied in depth the structure-performance relationship in the sys- tem, and it was found that the synergistic effect of the larger surface area, the adjusted band energy structure and the well crystallization may be conductive to the higher separation of the electron-hole pair, thus leading to the won- derful performance for the g-C3N4-NH3. Notably, the method has the merits of low cost, scalable production and environmental friendliness.

关键词： g-C3N4 nano-sheets NH3 urea photo-catalyst

Peptide-assembled siRNA nanomicelles confine MnOx-loaded silicages for synergistic chemical and gene-regulated cancer therapy

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Chinese Chemical Letters 2023年第4期34卷 453-458页

作者： Jingjing Li Juanjuan Wei Yixuan Gao Qi Zhao Jianghui Sun Jin Ouyang Na Na Key Laboratory of Radiopharmaceuticals Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100085China

Chemodynamic therapy(CDT) is a promising therapeutic approach for in situ cancer treatment, but it is still hindered by inefficient single-modality treatment and the weak targeted delivery of reagents into mitochondria(the main site of intracellular ROS production). Herein, to obtain a multimodal strategy,peptide-assembled si RNA nanomicelles were prepared to confine ultrasmall MnOxin small silica cages(silicages), which is convenient for synergistic chemical and gene-regulated cancer therapy. Given the free energy and versatility of small silicages, as well as the excellent Fenton-like activity of ultrasmall MnOx,MnOx-inside-loaded silicages(10 nm) were prepared for CDT delivery to mitochondria. Subsequently, to obtain a synergistic CDT and gene silencing treatment, the peptide-mediated assembly of si RNA and MnOx-loaded silicages were employed to obtain silicage@MnOx-si RNA nanomicelles(SMS NMs). After multiple modifications, sequential cancer cell-targeted delivery, GSH-controlled reagent release of si RNA and mitochondria-targeted delivery of MnOx-loaded silicages were successfully achieved. Finally, by both in vitro and in vivo experiments, SMS NMs were confirmed to be effective for synergistic chemical and gene-regulated cancer therapy. Our findings expand the applications of silicages and initiate the development of multimodal CDT.

关键词： Peptide-assembled siRNA nanomicelles MnOx-loaded silicages GSH-stimulated release Mitochondria-targeted delivery Cancer therap