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Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第01期 329-336页

作者： Yuzhu Li Yumeng Gao Feng Tian Yu Wang Yuan Yao Shaoliang Lin xiang Ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

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Polar Interface Optical Phonon Modes and Froehlich Electron－Phonon Interaction Hamiltonians in an Arbitrary Layer－Number Quantum Well System

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Communications in Theoretical Physics 2003年第2X期40卷 225-230页

作者： zhangli Hong-Jing CHENChuan-Yu DepartmentofMechanicsandElectronics PanyuPolytechnicsCollegePanyu511483China DepartmentofPhysics GuangzhouUniversityGuihuagangCampusGuangzhou510405China

By using determinant method as in our recent work, the IO phonon modes, the orthogonal relation for polarization vector, electron-IO phonon F^6hlich interaction Hamiltonian, the dispersion relation, and the electron-phonon coupling function in an arbitrary layer-number quantum well system have been derived and investigated within the framework of dielectric continuum approximation. Numerical calculation on seven-layer AlxGal-xAs/GaAs systems have been performed. Via the numerical results in this work and previous works, the general characters of the IO phonon modes in an n-layer coupling quantum well system were concluded and summarized. This work can be regarded as a generalization of previous works on IO phonon modes in some fLxed layer-number quantum well systems, and it provides a uniform method to investittate the effects of IO phonons on the multi-layer coupling quantum well systems.

关键词：极性界面光学声子模型耦合量子阱电子-声子相互作用哈密顿函数多层量子阱

Dynamic Analysis for Bose-Einstein Condensation in Quantum Cavity

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Communications in Theoretical Physics 2005年第5期43卷 900-904页

作者： zhangli WANGCheng LIYan-Min WANGJin-Fang SchoolofPhysics NortheastNormalUniversityChangchun130024China／／ChangchunInstituteofOpticsFineMechanicsandPhysicstheChineseAcademyofSciencesChangchun130022China ChangchunInstituteofOptics FineMechanicsandPhysicstheChineseAcademyofSciencesChangchun130022China DepartmentofAppliedMathematics ChangchunTaxationCollegeChangchun130021China SchoolofPhysics NortheastNormalUniversityChangchun130024China

For the two-level atoms system interacting with single-mode active field in a quantum cavity, the dynamics of the Bose-Einstein Condensation (BEC) is analyzed using an ordinary method suggested by authors to solve the system of Schrodinger representation in the Heisenberg representation. The wave function of the atoms is given. The stability factor determining the BEC and the selection rules of the quantum transition are solved.

关键词： Bose-Einstein condensation quantum cavity representation laser cooling

A Polaron in a Quantum Dot quantum Well

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Communications in Theoretical Physics 2002年第6期37卷 755-758页

作者： zhangli XIEHong－Jing 等 DepartmentofPhysics GuihuagangCampusGuangzhouUniversityGuangzhou510405China

The polaron effect in a quantum dot quantum well (QDQW)system is investigated by using the perturbation method. Both the bound electron states outside and inside the shell well are taken into account . Numerical calculation on the CdS/HgS QDQW shows that the phonon correction to the electron ground state energy is quite significant and cannot be neglected.

关键词： polaron quantum dot quantum well

Re-activation characteristics of preserved aerobic granular sludge

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Journal of Environmental Sciences 2005年第4期17卷 655-658页

作者： zhangli-li ZHANGBo HUANGYu-feng CAIWei-min CollogeofEnvironmentalScienceandEngineering ShanghaiJiaotongUniversityShanghai200240China.

In some industrial plants, wastewater was intermittently or seasonally generated. There may be periods during which wastewater treatment facilities have to be set into an idle phase over several weeks. When wastewater was generated again, the activated sludge flocs may have disintegrated. In this experiment, re-activation characteristics of aerobic granular sludge starved for 2 months were investigated. Specific oxygen utilization rate(SOUR) was used as an indicator to evaluate the metabolic activity of the sludge. The results revealed that aerobic granular sludge could be stored up to two months without running the risk of losing the integrity of the granules and metabolic potentials. The apparent color of aerobic granules stored at room temperature gradually turned from brownish-yellowish to gray brown. They appeared brownish-yellowish again 2 weeks after re-activation. The velocity and strength of granules after 2-month idle period could be fully restored about 3 weeks after re-activation. Metabolic activity, however, dropped to 15 8 mg O_2/(g MLVSS·h), i.e. 74 % reduction after 2 months of storage. After restarting the reactor, it took 2 weeks that SOUR of up to 48 5 mg O_2 /(g MLVSS·h) was achieved. A stable effluent COD concentration of less than 150 mg/L was achieved during the re-activation process.

关键词： aerobic granular sludge re-activation characteristics SBR specific oxygen consumption rate

Spinor Field Realizations of W2,6 String and W6 String

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Communications in Theoretical Physics 2004年第2期41卷 235-240页

作者： ZHAOShu-Cheng zhangli-Jie LIUYu-Xiao InstituteofTheoreticalPhysics LanzhouUniversityLanzhou730000China

In this paper the spinor field BRST charges of the W2,6 string and W6 string are constructed, where the BRST charges are graded.

关键词： W string BRST charge spinor realization

Laser image refractive index sensor based on the combination of a coreless optical fiber and a digital camera

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Optoelectronics Letters 2025年第2期 65-68页

作者： GUO Jingzhong LAN Feng CHEN xiang LIU Haifeng Xi'an Institute of Space Radio Technology Key Laboratory of Optoelectronic Sensor and Sensing Network Technology College of Electronic Information and Optical Engineering Nankai University

As a laser passes through a scattering medium,the light interacts with the irregular reflections within the medium,resulting in light scattering and the formation of *** this paper,an image sensor based on the combination of a coreless optical fiber and a digital camera is proposed for liquid refractive index sensing *** coreless fiber is used as a sensing unit,and the change in the speckle pattern is measured using the digital correlation method to detect the magnitude of the liquid's refractive *** experimental results indicate that the laser image sensing technique is capable of effectively distinguishing liquid samples with refractive indices ranging from 1.332 8 to1.390 8,with a sensing sensitivity of-1.306 ***,the laser image sensing technique,with its advantages of high experimental reproducibility,simple system design,remote over-control,holds great research significance and potential application in laser communication and sensor integration.

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Design and Implementation of A Dynamic Content Cache Module for Web Server

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Wuhan University Journal of Natural Sciences 2004年第5期9卷 828-834页

作者： LIUDan GUOCheng-cheng zhangli SchoolofElectronicInformation.WuhanUniversity Wuhan430072.Hubei.China

Web offers a very convenient way to access remote information resources, an important measurement of evaluating Web services quality is how long it takes to search and get information. By caching the Web server’s dynamic content, it can avoid repeated queries for database and reduce the access frequency of original resources, thus to improve the speed of server’s response. This paper describes the concept, advantages, principles and concrete realization procedure of a dynamic content cache module for Web server. Key words dynamic content caching - network acceleration - apache module CLC number TP 393.09 Foundation item: Supported by the Science Committee of WuhanBiography: LIU Dan (1980-), male, Master candidate, research direction: high speed computer network, high performance server clusters system.

关键词： dynamic content caching network acceleration apache module

Cell responses of Dunaliella salina FACHB 435 (Green Alga) to microgravitational stimulation by clinorotation

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Chinese Science Bulletin 1998年第20期43卷 1737-1742页

作者： zhangli Hu Yongding Liu Chinese Acad Sci Inst Hydrobiol Wuhan 430072 Peoples R China

Clinorotation experiments were established to simulate microgravity on ground. It was found that there were obvious changes of Dunaliella salina FACHB435 cells and their metabolic characteristics during clinorotation. The changes included the increases of glycerol content, the rate of H + secretion and PM H + ATPase activity, and the decrease of ratio of the plasma membrane (PM) phospholipid to PM protein. These results indicated that microgravity was a stress environment to Dunaliella salina . It is deduced that it would be possible to attribute the effect of microgravity on algal cells to the secondary activation of water stress.

关键词： Dunaliella salina clinostat plasma membrane microgravity.