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Chinese Chemical Letters 2005年第8期16卷 1077-1080页

作者： Xin Cun TANG tian duo li College of Chemistr and Chemical Engineering Central South University Changsha 410083 Shandong Institute of light Industry Jinan 250100

In this paper, the capacity titration technique （CT technique） was developed on basis of the RPG （ratio of potentio-charge capacity to galvano-charge capacity） method to continuously determine the solid diffusion coefficient D of the intercalary species within insertion-host materials with a small voltage region. The linear equations of D vs. q （value of ratio of the potentio-charge capacity to the galvano-charge capacity） were given in different range of q. By the CT technique,the li^＋ solid diffusion coefficients D within liMn2O4 at different voltages were determined. The results showed that the values of D varied from 3.447×10^-9 cm^2/s to 7.60×10^-11 cm^2/s in the voltage range of charge from 3.3V to 4.3V as a function of voltage with “W” shape.

关键词： Capacity titration technique li^+ solid diffusion coefficient liMn2O4.

Selective derivatization of oxime-blocked tolylene-2,4-diisocyanate

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Chinese Chemical Letters 2013年第11期24卷 1019-1022页

作者： Yang Sang Peng-Fei Yang tian-duo li Shandong Provincial Key Laboratory of Fine Chemicals Shandong Polytechnic University

A selective reaction of cyclohexanone oxime-blocked tolylene-2,4-diisocyanate（2,4-TDI）with amino siloxane was observed,in which amines were capable of discriminating two reactive groups in the 2,4-TDI ***,tolylene-2-tert-butyldimethylsilyloxyethyl carbamide-4-cyclohexanone oxime carbamate was synthesized and its precise structure was determined by single-crystal X-ray ***,it was found that oxime-blocked isocyanate could react selectively with the–NH2group with the–OH group unprotected in ethanolamine.

关键词： Cyclohexanone oxime Tolylene-2 4-diisocyanate Ethanolamine Selective reactions

~1H NMR analysis of the tolylene-2,4-diisocyanate-methanol reaction

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Chinese Chemical Letters 2010年第7期21卷 853-855页

作者： Peng Fei Yang Yong De Han tian duo li Jun Ying li Key Laboratory of Fine Chemicals(Shandong Province) Shandong Institute of Light IndustryJinan 250353China Science and Technology Office Shandong Institute of Light IndustryJinan 250353China School of Chemical Engineering Shandong Institute of Light IndustryJinan 250353China

Tolylene-2,4-diisocyanate（2,4-TDI） 1 reacts with methanol through two simultaneous paths in the polyurethane reaction,which involve two different intermediates-tolylene-4-carbamatic-2-isocyanate 2 and tolylene-2-carbamatic-4-isocyanate 3,and the final product is tolylene-2,4-dicarbamate ***-CH_3 chemical shifts in benzene ring in compounds 1,2,3 and 4 can be easily tested and well distinguished,through which those four compounds are quantified and their kinetics are *** shows that four rate constants for the tolylene-2,4-diisocyanate-methanol reaction in CCl_4 at 50℃are k_1=9.6×10^（-2）h^（-2）mol^（-2）min^（-1）, k_2=1.4×10^（-2）h^（-2）mol^（-2）min^（-1）,k_3=4.0×10^（-3）h^（-2）mol^（-2）min^（-1）,k_4=1.4×10^（-3）h^（-2）mol^（-2）min^（-1）.（k_1 is the reaction rate constant from compounds 1 to 2;k_2 is the reaction rate constant from compounds 1 to 3;k_3 is the reaction rate constant from compounds 3 to 4;k_4 is the reaction rate constant from compounds 2 to 4）.

关键词： Tolylene-2 4-diisocyanate Polyurethane reaction Kinetics

The amount effect of catalyst on the urethane reaction of o-hydroxybenzyl alcohol

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Chinese Chemical Letters 2012年第2期23卷 241-244页

作者： Peng Fei Yang Yan Hong Yu Shun Ping Wang tian duo li Shandong Provincial Key Laboratory of Fine Chemicals Shandong Polytechnic UniversityJinan 250353China School of Business Shandong Polytechnic UniversityJinan 250353China

The urethane reaction of o-hydroxybenzyl alcohol with phenyl isocyanate was monitored with in situ *** dilaurate was used as catalyst and its amount effect was *** was found that there was an obvious induction period before reaction *** was interesting that the time of induction period climbed up and then declined with the increase of dibutyltin dilaurate. When the concentration of dibutyltin dilaurate reached 9.58×10^（-5） mol/L,the induction period disappeared completely and hereafter did not appear any ***,the urethane reaction kinetics was *** the concentration of dibutyltin dilaurate increased,the reaction rate of phenolic group（k_1） increased sharply,but the reaction rate of alcoholic group（k_2） appeared of little change on the whole.k_1 increased about 20-fold,yet k_2 increased about 2-fold when the concentration of dibutyltin dilaurate varied from 9.58×10^（-6） mol/L to 1.92×10~4 mol/L,which made the value of k_1/k_2 enlarge.

关键词： Urethane reaction FT-IR Dibutyltin dilaurate Polymerization

Synthesis and characterization of asymmetric substituted dicarbamates

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Chinese Chemical Letters 2011年第10期22卷 1167-1170页

作者： Chao Zhao Peng Fei Yang Shun Ping Wang Jun Ying li tian duo li Shandong Provincial Key Laboratory of Fine Chemicals Shandong Polytechnic University Jinan 250353 China

Several new asymmetric substituted dicarbamates were synthesized with a convenient ***,tolylene-2,4-diisocyanate dimmer was obtained from monomer with tributylphosphine as ***,the dimmer reacted with alcohol（R^1OH） to prepare carbamate substituted ***,uretidione ring was opened and the released isocyanate reacted with another alcohol （R^2OH,R^1≠R^2）.

关键词： Asymmetric substituted dicarbamates Tolylene-2 4-diisocyanate Uretidione

Synthesis and characterization ofα-butyl-ω-{3-[(2,2-dihydroxymethyl)-propionyloxy]}propylpolydimethylsiloxanes

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Chinese Chemical Letters 2009年第12期20卷 1514-1517页

作者： Meng Zhang Jun Ying li GUO Wei Zhou Yuan Juan Wu Yong Mei Xia tian duo li School of Chemical and Materials Engineering Jiangnan UniversityWuxi 214122China School of Chemical Engineering Shandong Institute of Light IndustryJinan 250353China Central Laboratory Shandong Academy of Agriculture ScienceJinan 250100China

A series of polydimethylsiloxanes containing two primary hydroxyl groups at one single chain end were synthesized by five-step reactions which included esterification,hydroxyl protection,anionic ring-opening polymerization,hydrosilylation and *** prepared compounds in each step were *** results showed that each step synthesis was successfully carded out and objective products could be achieved.

关键词： Esterification Hydroxyl protection Anionic ring-opening polymerization Hydrosilylation Deprotection α-Butyl-ω-{3-[(2,2-dihydroxymethyl)propionyloxy]}propylpolydimethylsiloxane

Mosaic structure ZnO formed by secondary crystallization with enhanced photocatalytic performance

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International Journal of Minerals,Metallurgy and Materials 2021年第3期28卷 495-502页

作者： Hai-xia liu Meng-yuan Teng Xu-guang Wei tian-duo li Zai-yong Jiang Qing-fen Niu Xu-ping Wang Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Pharmaceutical EngineeringQilu University of Technology(Shandong Academy of SciencesJinan 250353China State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology(Shandong Academy of SciencesJinan 250353China Advanced Materials Institute Qilu University of Technology(Shandong Academy of SciencesJinan 250014China

Zinc acetate is used as a raw material to synthesize the desired ZnO in hot solvent by controlling the amount of citric acid(CA)***,the amount of CA added has a significant relationship with the control of the morphology of *** ZnO wrapped in nanosheets is synthesized through the secondary crystallization of Zn^(2+).The optical properties of the ZnO sample are tested through the degradation of organic ***,the photocatalytic properties of ZnO vary with the different amounts of CA *** of the active crystal face increases the photocatalytic activity of *** addition,the number of defects on the surface of the ZnO sample increases because of its large specific surface area,thus changing the bandgap of ***,the resulting sample can respond under visible light.

关键词： active crystal face citric acid secondary crystallization photocatalysis

Calculation of the Physical and Microdosimetric Parameters of Electron and Alpha-Particle Radiation Using Monte Carlo Simulations

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Chinese Physics Letters 2014年第3期31卷 181-183页

作者： GENG Jin-Peng CAO tian-Guang li duo-Fang AN Hai-Long HAN Ying-Rong li Jin HU Jin-Shan li Nan-Nan ZHAN Yong Institute of Biophysics School of Sciences Hebei University of Technology Tianjin 300401

Various ionizing radiations, such as electrons and alpha particles, transfer their energy to media by produced secondary electrons and induce double- or single-strand break of DNA, which result in variable effects. To understand how the ionizing radiations interact with DNA and break it, several models have been developed, most of them consider the water as a vapor state. Actually, the ionizing particles interact with DNA which is solved in liquid water. To compare the difference of vapor and liquid water models, we calculate the stopping power, continuous slowing down approximation （CSDA） range and S value of electrons and alpha particles at cellular scale in liquid and vapor by Monte Carlo simulations, respectively. Our data show that the stopping power and CSDA range are different in liquid and vapor water in a special energy range. For many S values, the liquid model is better than the vapor model when the energy of the electrons is higher than 100 keV and the vapor model is higher than the liquid model for the 1 MeV alpha particles.

关键词： DNA

Effect of aggregation behavior of gelatin in aqueous solution on the grafting density of gelatin modified with glycidol

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Effect of aggregation behavior of gelatin in aqueous solutio...

Ultra‑High Sensitivity Anisotropic Piezoelectric Sensors for Structural Health Monitoring and Robotic Perception

中国化学会第28届学术年会

作者： Jing Xu,tian-duo li,Xiao-Long Tang,Cong-De Qiao,Qing-Wei Jiang Key Laboratory of Fine Chemicals of Shandong Province,Shandong Polytechnic University,Jinan 250353,PR

＜正＞The aggregate structure of gelatin formed in aqueous solution at different concentrations largely affected the grafting density of glycidol grafted gelatin polymers（GGG polymers）.The grafting density was measu... 详细信息

关键词： Gelatin Modify Grafting density Glycidol Aggregation behavior Structural transition

来源： cnki会议评论

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Nano-Micro Letters 2025年第2期17卷 432-446页

作者： Hao Yin Yanting li Zhiying tian Qichao li Chenhui Jiang Enfu liang Yiping Guo State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Beijing Vacuum Electronics Research Institute Beijing 100015People’s Republic of China Fundamental Science On Vibration Shock and Noise LaboratoryState Key Laboratory of Mechanical System and VibrationSchool of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Monitoring minuscule mechanical signals,both in magnitude and direction,is imperative in many application scenarios,e.g.,structural health monitoring and robotic sensing ***,the piezoelectric sensor struggles to satisfy the requirements for directional recognition due to the limited piezoelectric coefficient matrix,and achieving sensitivity for detecting micrometer-scale deformations is also ***,we develop a vector sensor composed of lead zirconate titanate-electronic grade glass fiber composite filaments with oriented arrangement,capable of detecting minute anisotropic *** as-prepared vector sensor can identify the deformation directions even when subjected to an unprecedented nominal strain of 0.06%,thereby enabling its utility in accurately discerning the 5μm-height wrinkles in thin films and in monitoring human pulse *** ultra-high sensitivity is attributed to the formation of porous ferroelectret and the efficient load transfer efficiency of continuous lead zirconate titanate ***,when integrated with machine learning techniques,the sensor’s capability to recognize multi-signals enables it to differentiate between 10 types of fine textures with 100%*** structural design in piezoelectric devices enables a more comprehensive perception of mechanical stimuli,offering a novel perspective for enhancing recognition accuracy.

关键词： Flexible piezoelectric filaments Anisotropic Ultra-high sensitivity Structural health detection Texture recognition