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Ultralong Room-Temperature Phosphorescence of Silicon-Based Pure Organic Crystal for Oxygen Sensing

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CCS Chemistry 2022年第3期4卷 1007-1015页

作者： wu-jie guo Yu-Zhe Chen Chen-Ho Tung Li-Zhu wu Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049

Quantitative oxygen detection is of great importance in biological fields,complex environments,and chemical process *** to the high sensitivity and rapid response of long-lived phosphorescence to oxygen,pure organic room-temperature phosphorescence(RTP)for oxygen detection has recently attracted considerable ***,to simultaneously achieve ultralong phosphorescence at room temperature and quantitative oxygen detection from pure organic crystals is *** packing to restrict nonradiative decay is not apt to allow oxygen diffusion for *** herein is an exceptional example,that is,a crystal of simple carbazole molecules that bridges with an ethoxysilane(DCzC2OSi)and is capable of oxygen sensing with remarkable *** studies and single-crystal structure analysis reveal that DCzC2OSi crystals display ultralong RTP and suitable oxygen diffusion channels from its butterfly-like tetrahedron *** comparisons with the crystals of CzC2OH and DCzSi verify the important roles of silicon and ethoxy groups of DCzC2OSi for both enhanced phosphorescence lifetime and oxygen *** the crystals of DCzC2OSi were doped into polymer,the lifetime-based oxygen sensor exhibited high KSV(5.308 kPa^(−1))with full reversibility,which is attractive for the development of practical oxygen sensors from pure organic crystals.

关键词： pure organic crystal ultralong roomtemperature phosphorescence oxygen sensor molecular packing

Visualization of supramolecular assembly by aggregation-induced emission

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Aggregate 2023年第2期4卷 102-122页

作者： wu-jie guo Tuokai Peng Wenping Zhu Shixiang Ma Guang Wang Ying Li Bin Liu Hui-Qing Peng Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijingChina Innovation Research Center for AIE Pharmaceutical Biology Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target and Clinical PharmacologyThe NMPA and State Key Laboratory of Respiratory DiseaseSchool of Pharmaceutical Sciences and The Fifth Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of TechnologyGuangzhouChina

Supramolecular architectures are constructed by the self-assembly of small building blocks via the use of metal-ligand coordination,π–πstacking interactions,hydrogen bonding,host-guest interactions,and other noncovalent driving forces,which confer unique dynamic reversibility and stimulus responsiveness to the supramolecular materials and also lead to the demand of expensive and complex equipment for the characterization of supramolecular assembly ***,the self-assembly processes bring the monomeric chromophores together,offering possibilities to establish ties between the supramolecular assembly and aggregation-induced emission(AIE)*** to conventional luminescent molecules,AIE luminogens(AIEgens)exhibit significant fluorescence enhancement upon the restriction of molecular motions,thus displaying the advantages of signal amplification and low background *** the above,the real-time,sensitive,and in situ visualization of the formation of self-assemblies and their stimuli responsiveness based on AIE becomes ***,we review recent works that encompass the visualization of supramolecular assembly-related behaviors by means of AIE characteristics of *** organization of this review will be by different types of supramolecular architectures,including metallacycles/cages,micelles/vesicles,supramolecular polymers,and supramolecular *** overview of future opportunities and challenges for the real-time monitoring of supramolecular assembly by AIE is also provided.

关键词： aggregation-induced emission metallacycles/cages micelles/vesicles supramolecular gels supramolecular polymers visualization

Unveiling size-fluorescence correlation of organic nanoparticles and its use in nanoparticle size determination

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Aggregate 2024年第1期5卷 331-336页

作者： wu-jie guo Shixiang Ma Hui Wang Lu Qiao Lei Chen Chenyu Hong Bin Liu Xiaoyan Zheng Hui-Qing Peng State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijingChina Key Laboratory of Cluster Science of Ministry of Education Beijing Key Laboratory of Photoelectronic/Electro-photonic Conversion MaterialsKey Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering of Ministry of Industry and Information TechnologySchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijingChina

Quantitatively establishing the correlation between nanoparticle size and fluorescence is essential for understanding the behavior and functionality of fluorescent nanoparticles(FNPs).However,such exploration focusing on organic FNPs has not been achieved to ***,we employ the use of supramolecular polymeric FNPs prepared from tetraphenylethylene-based bis-ureidopyrimidinone monomers(bis-UPys)to relate the size to the fluorescence of organic *** an equal concentration of bis-UPys,a logarithmic relationship between them is built with a correlation coefficient higher than *** calculations indicate that variations in fluorescence intensity among FNPs of different sizes are attributed to the distinct molecular packing environments at the surface and within the interior of the *** leads to different nonradiative decay rates of the embedded and exposed bis-UPys and thereby changes the overall fluorescence quantum yield of nanoparticles due to their different specific surface *** established fluorescence intensity-size correlation possesses fine universality and reliability,and it is successfully utilized to estimate the sizes of other nanoparticles,including those in highly diluted dispersions of *** work paves a new way for the simple and real-time determination of nanoparticle sizes and offers an attractive paradigm to optimize nanoparticle functionalities by the size effect.

关键词： aggregation-induced emission fluorescence detection fluorescent nanoparticle nanoparticle size supramolecular polymer

壳聚糖/聚醚半互穿网络水凝胶的合成与力学性能的研究

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功能材料 2005年第9期36卷 1386-1388页

作者：吴国杰崔英德西北工业大学材料科学与工程学院陕西西安710072 仲恺农业技术学院广东广州510225

介绍了交联壳聚糖/聚醚半互穿网络水凝胶的制备方法,研究了温度、聚醚与壳聚糖质量比、交联剂戊二醛浓度等对壳聚糖/聚醚半互穿网络水凝胶的溶胀度、硬度的影响,采用正交实验对工艺条件进行了优化,实验结果表明当凝胶温度为45℃,聚醚与... 详细信息

介绍了交联壳聚糖/聚醚半互穿网络水凝胶的制备方法,研究了温度、聚醚与壳聚糖质量比、交联剂戊二醛浓度等对壳聚糖/聚醚半互穿网络水凝胶的溶胀度、硬度的影响,采用正交实验对工艺条件进行了优化,实验结果表明当凝胶温度为45℃,聚醚与壳聚糖质量比为0.6,交联剂浓度为1.599mol/L,其凝胶硬度最大。

关键词：壳聚糖聚醚半互穿网络水凝胶硬度

Practical approach for detecting k-nonseparability of multipartite quantum states

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 32-48页

作者： jie guo Jinchuan Hou Xiaofei Qi Kan He College of Mathematics Taiyuan University of Technology School of Mathematics and Statistics Shanxi University Key Laboratory of Complex Systems and Data Science of Ministry of Education Shanxi University

The instantaneous detection of entanglement in quantum states poses a significant challenge in the fields of quantum computation and quantum information, and there are no practical methods or tools to complete this task satisfactorily so far. We propose a sufficient and necessary criterion of k-nonseparability for any n-partite finite or infinite dimensional systems, 2 ≤ k ≤ n. This criterion serves as the foundation for a practical scheme designed to detect entanglement and k-nonseparability across multipartite finite-dimensional systems. To exemplify the application of our scheme, we have developed a software tool that facilitates swift and precise identification of entanglement, k-nonseparability, and genuine entanglement within n-qubit systems, specifically tailored for systems with 2 ≤ n ≤ 4.

关键词： multipartite systems entanglement states entanglement witnesses ${\bm~k}$-nonseparability

Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao guo Hui Bojing Sun Dongfang Hou Meidi Wang Xueqian wu Tao wu Dong-Sheng Li College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory College of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Heterojunctions LSPR Photocatalyst Phase junction Schottky junction Photothermal effect

儿童脊柱肿瘤就诊及诊断延误相关影响因素分析

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中国脊柱脊髓杂志 2017年第9期27卷 812-816页

作者：吴杰郭征石磊李小康第四军医大学附属西京医院骨肿瘤科西安市710032

目的 :探讨儿童脊柱肿瘤患者就诊、诊断延误情况的相关影响因素。方法 :回顾性分析2007年1月~2017年1月就诊于我科的16岁以下脊柱肿瘤患者,收集其临床病例资料,记录患者性别、年龄、肿瘤侵袭性、病变节段、居住地、是否为独生子女、首... 详细信息

目的 :探讨儿童脊柱肿瘤患者就诊、诊断延误情况的相关影响因素。方法 :回顾性分析2007年1月~2017年1月就诊于我科的16岁以下脊柱肿瘤患者,收集其临床病例资料,记录患者性别、年龄、肿瘤侵袭性、病变节段、居住地、是否为独生子女、首次就诊医院的级别、是否受到错误诊断8个可能对就诊延误及诊断延误有影响的因素。采用单因素分析及多因素Logistic回归分析研究以上影响因素与就诊延误、诊断延误的关系。结果:共51例患儿纳入本研究,男28例,女23例,平均年龄9.5±4.1岁,就诊间期:1.3,(0~24)个月,就诊延误率为39.2%;诊断间期:1.0,(0~12)个月,诊断延误率为51.0%。单因素分析结果显示,发病年龄、病变部位和患儿居住地与延误就诊显著相关(P<0.05),首诊医院级别、患儿居住地与延误诊断显著相关(P<0.05)。多因素logistic回归结果显示,大龄患儿、病变位于腰骶椎为就诊延误的独立危险因素(P<0.05),首诊医院级别为二级以下、患儿居于农村为诊断延误的独立危险因素(P<0.05)。结论:大龄儿童、病变位于腰、骶椎患儿更易延误就诊;居住于农村、首诊为二级以下医院的患儿更易延误诊断。

关键词：儿童脊柱肿瘤延误诊断

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聚乙烯醇-壳聚糖复合水凝胶的溶胀性能

精细化工 2006年第6期23卷 532-535页

作者：吴国杰崔英德广东工业大学轻工化工学院广东广州510006 仲恺农业技术学院广东广州510225

以聚乙烯醇(PVA)和壳聚糖为原料、以戊二醛为交联剂,在醋酸溶液中合成了聚乙烯醇-壳聚糖复合水凝胶,研究了影响水凝胶溶胀性能的多种因素,实验结果表明,该凝胶对pH、离子、温度敏感,且在pH=3.13盐酸溶液、常温下的蒸馏水及8℃蒸馏水中... 详细信息

以聚乙烯醇(PVA)和壳聚糖为原料、以戊二醛为交联剂,在醋酸溶液中合成了聚乙烯醇-壳聚糖复合水凝胶,研究了影响水凝胶溶胀性能的多种因素,实验结果表明,该凝胶对pH、离子、温度敏感,且在pH=3.13盐酸溶液、常温下的蒸馏水及8℃蒸馏水中溶胀度较大,分别为1 112.2%、974.2%、1 036.8%,凝胶溶胀度随着干燥温度及干燥时间的增加而减小,聚乙烯醇种类对水凝胶溶胀性能有显著影响,PVA-1788与壳聚糖形成的水凝胶溶胀度最大为2 074.1%。聚乙烯醇-壳聚糖复合水凝胶因具有优良的机械强度、生物相容性及生物降解性,同时又具有pH/离子/温度敏感性,因此日益显示其在生物医学材料等领域的重要性。

关键词：壳聚糖聚乙烯醇复合水凝胶溶胀度敏感性

Viscosity and structure relationship with equimolar substitution of CaO with MgO in the CaO–MgO–Al_(2)O_(3)–SiO_(2)slag melts

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 70-79页

作者： Yong Hou Shuo Zhang jie Dang Jia guo Hanghang Zhou Xuewei Lü College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and New Materials Chongqing UniversityChongqing 400044China

Currently,the Al_(2)O_(3)content in the high-alumina slag systems within blast furnaces is generally limited to 16wt%–18.5wt%,making it challenging to overcome this *** most studies that concentrated on managing the MgO/Al_(2)O_(3)ratio or basicity,this paper explored the effect of equimolar substitution of MgO for CaO on the viscosity and structure of a high-alumina CaO-MgO-Al_(2)O_(3)-SiO_(2)slag system,providing theoretical guidance and data to facilitate the application of high-alumina *** results revealed that the viscosity first decreased and then increased with higher MgO substitution,reaching a minimum at 15mol%MgO *** transform infrared spectroscopy(FTIR)results found that the depths of the troughs representing[SiO_(4)]tetrahedra,[AlO_(4)]tetrahedra,and Si-O-Al bending became progressively deeper with increased MgO *** of the Raman spectra showed that the average number of bridging oxygens per Si atom and the X_(Q^(3))/X_(Q^(2))(X_(Q^(i))is the molar fraction of Q^(i) unit,and i is the number of bridging oxygens in a[SiO_(4)]tetrahedral unit)ratio increased from 2.30 and 1.02 to 2.52 and 2.14,respectively,indicating a progressive polymerization of the silicate structure.X-ray photoelectron spectroscopy(XPS)results highlighted that non-bridging oxygen content decreased from 77.97mol% to 63.41mol% with increasing MgO concentration,whereas bridging oxygen and free oxygen contents *** analysis demonstrated a gradual increase in the polymerization degree of the tetrahedral structure with the increase in MgO ***,bond strength is another important factor affecting the slag *** occurrence of a viscosity minimum can be attributed to the complex evolution of bond strengths of non-bridging oxygens generated during depolymerization of the[SiO_(4)]and[AlO_(4)]tetrahedral structures by CaO and MgO.

关键词： aluminosilicate viscosity structure spectroscopy