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Dramatical enhancement of circular dichroism in chiral hybrid perovskites via carboxylic hydrogen bond engineering

Science China Chemistry 2025年

作者： Hang li xinling li Peng Wang Tingting Zhu Ruiqing li Huang Ye Yaru Geng Hongliang Dai Junhua Luo State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of Chinese Academy of Sciences Fujian College University of Chinese Academy of Sciences College of Chemistry Fuzhou University College of Chemistry and Materials Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of EducationJiangxi Normal University

Chiral hybrid perovskites （CHPs） have been regarded as promising candidates for developing chiroptoelectronics ***,circular dichroism （CD）,as one of the most important characteristics to evaluate the chiroptical activity,remains at a comparatively low level in CHPs compared to other chiral materials,which hinders the successful applications of CHPs in stateof-the-art ***,exploring new methods for enhancing CD in CHPs is urgently needed and remains ***,enhanced CD response has been successfully realized via constructing carboxylic hydrogen bonding in chiralachiral mixed cations perovskites （R/S-PPA）2（ABA）PbBr5（2R/2S）(PPA=1-phenylpropylamine,ABA=4-aminobutyric acid).Compared with the prototype （R/S-PPA）PbBr3（1R/1S）,2R/2S provide intimate connections between organic units and inorganic parts via carboxylic hydrogen bonding N–H···O bridge,contributing new chirality transfer paths.A larger inorganic skeletons’helicity in 2R/2S predicts a high degree of chirality ***,2R/2S exhibit significantly enhanced CD response with an anisotropy factor amplified by an order of ***,bright blue circularly polarized luminescence applications are achieved in 2R/*** work systematically investigates the correlation between CD and hydrogen bonding interaction in CHPs,meanwhile providing a new avenue to develop the application potential of chiral materials in chiroptoelectronics.

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Formation and transformation of volatile nanoparticles from a diesel engine during exhaust dilution

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Chinese Science Bulletin 2012年第8期57卷 948-954页

作者： li xinling HUANG Zhen Key Laboratory of Power Machinery and Engineering Education Ministry Shanghai Jiao Tong UniversityShanghai 200240China

A classic H 2 SO 4-H 2 O binary homogeneous nucleation model coupled to an aerosol dynamics model,suitable for studying the formation and transformation of volatile nanoparticles (VNPs) during diesel engine exhaust dilution,has been *** the H 2 SO 4-H 2 O binary homogeneous nucleation model,the nucleation ratio and molecular cluster size were *** effect of aerosol dynamic processes on VNP number size distributions was *** effects of fuel sulfur content (FSC) and sampling conditions in the laboratory on VNP number size distributions were also *** simulations demonstrated that nucleation increased the cluster number concentration and that FSC,temperature and humidity significantly affected the nucleation ratio and molecular cluster *** promoted the evolution of cluster-particle size distributions from monodisperse to *** present in the exhaust can suppress the formation of *** and sampling conditions,like the primary dilution temperature,the primary dilution relative humidity,residence time and the primary dilution ratio have significant effects on VNP number size distributions.

关键词：稀释比例柴油机排气纳米粒子挥发性大小分布成核模型采样条件相对湿度

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Characteristics of ultrafine particles emitted from a dimethyl ether (DME) engine

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Chinese Science Bulletin 2008年第2期53卷 304-312页

作者： li xinling HUANG Zhen WANG JiaSong WU JunHua Center for Combustion and Environmental Technology Shanghai Jiao Tong University Shanghai 200240 China School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

Measurements of exhaust particle number concentration and size distribution from a dimethyl ether (DME) engine at different engine loads and speeds were carried out by using a two-stage dilution sys- tem and an SMPS. The results of the DME engine were compared with those of the original diesel en- gine. The fuel composition had significant effects on the exhaust particle size distribution, the total exhaust particle number and mass concentrations. Compared with those of the DME engine, the parti- cle mass emissions of the diesel engine increased 5.7-17.7 times. At high engine speed (n=2200 r/min), compared with those of the DME engine, the total particle number emissions of the diesel engine in- creased 0.75-2.2 times, while the total particle number emissions of the diesel engine decreased by about 50%-80% for middle and high loads at middle engine speed (n=1400 r/min). Compared with those of the DME engine, the total exhaust particle number concentrations in the accumulation mode of the diesel engine increased 4.2-62.6 times and the exhaust particle geometric number mean diameters in the accumulation mode increased by about 10-30 nm. This correlated with higher oxygen level and lack of C-C bonds in DME. A lot of nucleation mode particles were emitted from the DME engine, this correlated with the processes of nucleation and condensation of the volatile and semi-volatile com- pounds in the exhaust gas.

关键词：二甲基醚柴油机发动机微粒

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Effects of heat pump drying temperature and dietary fat on carrot β-carotene bioaccessibility

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International Journal of Agricultural and Biological Engineering 2017年第4期10卷 234-242页

作者： Sun Xiaofei Zhu Wenxue li xinling Fan Jinling School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013China College of Food and Bioengineering Henan University of Science and TechnologyLuoyang 471023China

Dehydration can significantly extend the shelf life of dried carrots and still retain nutrition of provitamin A *** vitro digestion model was used in this study to assess the effect of drying temperatures of heat pump and dietary fat on the bioaccessibility ofβ-carotene in ***,low-speed centrifugation was employed to obtainβ-carotene release rate in *** was applied to obtainβ-carotene micellar rate in micelle *** assays were used as indicators to assess the bioaccessibility of theβ-*** higher drying temperatures had a negative effect on the retention rate ofβ-carotene in carrots,it showed a positive impact on the micellar *** addition,dietary fat significantly increased the release rate and micellar rate ofβ-carotene for both fresh carrots and dried carrot products,with the highest release rate and micellar rate obtained when 10%dietary fat was ***,the heat pump drying process and dietary fat can significantly improve the bioaccessibility ofβ-carotene in carrots,which may increase theβ-carotene bioavailability to human.

关键词： bioaccessibility in vitro digestion β-carotene carrot heat pump drying

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Characteristics of ultrafine particle from a compressionignition engine fueled with low sulfur diesel

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Chinese Science Bulletin 2009年第23期54卷 4411-4417页

作者： liU Wei ZHANG WuGao LEI Zhu li xinling HUANG Zhen Key Laboratory for Power Machinery and Engineering of Minstry of Edueation Shanghai Jiao Tong University Shanghai 200240 China School of Environmental Science and Engineering Shanghai Jiao Tong University Shanghai 200240 China

Number size distributions (NSDs, 10―487 nm) and composition of nanoparticle emitted from an engine fueled with ordinary diesel (OD) and low sulfur diesel (LSD) fuel were comparatively studied. The results indicate that, compared with the OD, the LSD was found to slightly decrease the mass concentration, and significantly reduce the number concentration of the total particles (10―487 nm), and the reduction of number increased with the speed and load of engine. The NSD for the two fuels showed a similar bimodal structure under all test engine conditions. Under the same engine conditions, the nucleation mode for LSD fuel was significantly lower than that of ordinary diesel. However, the accumulation mode for the two fuels showed little difference. The elements composition of exhaust particles included C, O, Cl, S, Si, Ca, Na, Al and K. The S element was not detected in LSD fuel case. The main component of soluble organic fraction (SOF) of exhaust particles for the two fuels included saturated alkane (C15―C26), ester and polycyclic aromatic hydrocarbons (PAHs). However, PAHs were not found in LSD fuel case.

关键词：发动机燃料低硫柴油颗粒特征可持续发展战略碳氢化合物超细元素组成纳米结构

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Experimental study on impacts of fuel type on thermo-acoustic instability in a gas turbine model combustor

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Science China(Technological Sciences) 2021年第6期64卷 1345-1358页

作者： RUAN Can CHEN FeiEr YU Tao CAI WeiWei HE ZhuoYao MAO YeBing li xinling LU XingCai School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Effects of liquid fuel composition variations on characteristics of self-excited thermo-acoustic instabilities in a lean premixed,pre-vaporized gas turbine model combustor were experimentally *** fuels included practical RP-3 jet fuel and its blending with iso-octane and n-dodecane,which were branched and linear alkanes *** the test conditions,dynamic pressure measurements indicated that the dominant instability frequency was highest for RP-3 flame,while RP-3/ndodecane flame exhibited the strongest instability strength.A further analysis showed that the instability frequency correlated well with the profiles of adiabatic flame temperature,and the strength of the instability highly depended on the ignition delay times of the *** of the flame structure and flow field with OH*chemiluminescence (CL) imaging and twodimensional particle image velocimetry (PIV) techniques indicated that changes in the fuel composition did not alter the unstable modes and general sequences of flame-flow structure *** power spectra and proper orthogonal decomposition(POD) analysis suggested that axial oscillations along with precessing vortex core (PVC) induced helical motion predominated periodic flame structure and flow field oscillations.

关键词： combustion gas turbine engine fuel effects thermo-acoustic instability PIV

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A new attempt to develop fermented milk with low whey protein allergenic potential using a top-down method

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FOOD BIOSCIENCE 2023年第3期53卷 1238-1248页

作者： Ma, Ruiyang Miao, Na Zhang, Qingyi Jiang, Shujuan li, xinling Chi, Lei li, Yue Mu, Guangqing Zhu, Xuemei Dalian Polytech Univ Sch Food Sci & Technol Liaoning 116000 Peoples R China Xinjiang Tianrun Biol Technol Co Ltd Urumqi 830011 Peoples R China Dalian Women & Children Med Ctr Dalian 116012 Peoples R China

The development process of fermented milk products with low-allergenic potential usually begins with the isolation and screening of strains. However, this bottom-up screening method is time-consuming and heavy workload. Once the target strain is not screened, it will cause a waste of time and money. This experiment adopted a top-down method to screen strains quickly and efficiently and prepared a fermented milk with low whey protein allergenic potential. The traditional fermented dairy products from Xinjiang are a good source for screening functional strains. We took 59 traditional fermented dairy products from Xinjiang as samples. The antigenicity of alpha-lactalbumin (alpha-LA) and beta-lactoglobulin (beta-LG), the main allergenic proteins which are easy to cause human allergy, were taken as the indicators. Through direct screening of the fermented dairy product with the lowest antigenicity, the BZ-21 sample was selected as the target sample. The 13 strains isolated from the BZ-21 sample were safe, and the antigenicity and immunoglobulin E (IgE)-binding capacity of the fermented milk prepared under optimized fermentation conditions were reduced. The results showed that the top-down screening method used in this experiment was effective, and these 13 strains will be potential probiotics in the development of low-allergenic dairy products.

关键词： Cows? milk protein allergy ?-lactalbumin ?-lactoglobulin Antigenicity Allergenicity

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Effect of Deformation Conditions on Mechanical Properties of Zr-based Metallic Glasses

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Research and Application of Materials Science 2020年第2期2卷 43-50页

作者： Zhenxiang ZHAO Chunyan li Fuping ZHU xinling li Shengzhong KOU State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals Lanzhou University of TechnologyLanzhou Gansu 730050 School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou Gansu 730050

In this paper,the effects of different strain rate(1.10-5 s-1,5.10-5 s-1,1.10-4 s-1,5.10-4 s-1,1.10-3 s-1)and aspect ratio(1:1,1.5:1,2:1,2.5:1,3:1)on mechanical properties of Zr-based metallic glasses at room temperature were *** results indicate that as the strain rate increases,the plastic strain and compressive strength of the specimens gradually *** specimen with the strain rate of 1.10-5 s-1 exhibits the higher plastic strain of 10.25%,compressive strength of 2002 MPa and fracture strength of 1999 *** addition,accompanied with the increase in aspect ratio,the plastic strain of the specimens declines from 25.42%to 1.97%,meanwhile,the compressive strength and fracture strength of the specimens also present declining trend.

关键词： Zr-based Metallic glasses mechanical properties plastic strain strain rate aspect ratio

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两晋官方图书整理编撰机构与职官再考

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图书馆 2021年第8期 107-111页

作者：李心灵中国社会科学院大学研究生院北京102488

两晋继承曹魏图书编撰机构设置而稍有改变。专业图书整理编撰机构主要是秘书监、著作省。晋武帝时期,秘书归中书省统辖,秘书著作局单独存在。晋惠帝以后,主要图书整理编撰机构为秘书监,下设秘书丞、秘书郎,并统著作省。著作省下设著作... 详细信息

两晋继承曹魏图书编撰机构设置而稍有改变。专业图书整理编撰机构主要是秘书监、著作省。晋武帝时期,秘书归中书省统辖,秘书著作局单独存在。晋惠帝以后,主要图书整理编撰机构为秘书监,下设秘书丞、秘书郎,并统著作省。著作省下设著作郎、著作佐郎,主要负责国史的编撰。除专业图书整理编撰机构外,相关的辅助机构还有中书监、中书令、御史中丞、散骑常侍、侍中、散骑侍郎等。太子洗马与王之文学、典书令等也参与了图书整理工作。

关键词：两晋图书编撰机构秘书省著作省中书监中书令太子洗马

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Set Stability of Switched Boolean Networks with Function Perturbation

Set Stability of Switched Boolean Networks with Function Per...

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第43届中国控制会议

作者： Jinsuo Wang xinling li Xiujun Cao Shihua Fu Research Center of Semi-tensor Product of Matrices: Theory and Applications

This article investigates the set stability of switched Boolean networks(SBNs) with function perturbation under arbitrary switching signal. Firstly, the system is converted into algebraic form utilizing semi-tensor product(STP) of ***, based on algebraic expression, four cases are considered. And then, two theorems are obtained, which can be used to determine whether an SBN is set stability after function perturbation. In addition, according to the theorems, two corresponding corollaries are derived. Finally, an example is given to verify the correctness of the conclusion.

关键词： Switched Boolean networks semi-tensor product of matrices set stability function perturbation arbitrary switching signal

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