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Science China Chemistry 2010年第11期53卷 2311-2317页

作者： lam jacky wing yip Department of Chemistry The Hong Kong University of Science & Technology

The theoretical calculation of the charge mobility of 2,5-bis(trialkylsilylethynyl)-1,1,3,4-tetraphenylsiloles is presented.B3LYP/6-31* calculations demonstrated that these silole molecules possessed large coupling matrix elements and reorganization energies for electron and hole transfers and high electron *** bulkiness of the trialkyl substituents influenced the charge mobility of the silole molecules,with the smaller trimethyl group imparting higher charge mobility than triethyl and triisopropyl substituents.

关键词： silole theoretical calculation substitution effect electronic structure charge mobility

Crystalline Behavior and Structure of a Liquid Crystal Com- pound, 5-{[4＇-（（（Pentyl）oxy）-4-biphenylyl）carbonyl]oxy}- 1 -pentyne

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Chinese Journal of Chemistry 2011年第4期29卷 631-638页

作者：刘雷静李杲周恩乐 lam,jacky wing yip 唐本忠 State Key Laboratory of Supramolecular Structure and Materials Jilin University Changchun Jilin 130012 China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Graduate School of Chinese Academy of Sciences Changchun Jilin 130022 China Department of Chemistry Hong Kong University of Science & Technology Clear Water Bay Kowloon Hong Kong China

Single crystals of two liquid crystal compounds, 5-{[4＇-（（（pentyl）oxy）-4-biphenylyl）carbonyl]oxy}-1-pentyne （A3EO5） and 5-{[（4＇-nonyloxy-4-biphenylyl）carbonyl]oxy}-1-pentyne （A3EO9）, have been prepared by solution growth technique. The morphologies and structures of A3EO5 and A3EO9 crystals were investigated by wide angle X-ray diffraction （WXRD）, atom force microscope （AFM） and transmission electron microscope （TEM）. In contrast to the same series of compounds which have a longer alkyl tail, 5-{[（4＇-heptoxy-4-biphenylyl）carbonyl]oxy}-1-pentyne （A3EO7）, 5-{[（4＇-heptoxy-4-biphenylyl）oxy]carbonyl}-1-pentyne （A3E＇O7） and A3EO9, A3EO5 shows strikingly different crystalline behavior. The former three compounds have only one crystal form, whereas A3EO5 exhibits polymorphism. Specifically, A3EO5 crystals grown from toluene solution show two crys- tal forms. The first one is crystal I which adopts a monoclinic P112/m space group with unit cell parameters of a= 5.79A, b=8.34A, c=43.92/k, y=96°, and the other one is crystal II which adopts a monoclinic P112 space group with unit cell parameters of a=5.55A, b=7.38A, c=31.75 ]k, y=94°. When using dioxane as the solvent to grow A3EO5 crystal, we can selectively obtain crystal Ⅰ. A3EO5 melt-grown crystals also have two crystal forms which derive from crystal I and crystal Ⅱ, respectively. The different crystalline behavior of the compounds should correlate with their different electron dipole moment resulting from the different length of alkyl tail.

关键词： crystal growth crystal morphology crystal structure electron diffraction single crystal

Synthesis of an AIE-active fluorogen and its application in cell imaging

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Science China Chemistry 2009年第1期52卷 15-19页

作者： lam jacky wing yip FAISAL Mahtab NG Ka Ming LUO Kathy Qian Department of Chemistry The Hong Kong University of Science & Technology (HKUST) Clear Water Bay Department of Chemical and Biomolecular Engineering HKUST Clear Water Bay Bioengineering Graduate Program HKUST Clear Water Bay

A fluorogen named 1-decyl-1-methyl-2,5-bis{4-[(N,N-diethylamino)methyl]phenyl}-3,4-diphenylsilole (3) was synthesized. It emitted weakly as isolated molecule but strongly as supramolecular aggregate, showing a characteristic behavior of aggregation-induced emission (AIE). The molecules of 3 formed highly emissive nanoparticles in aqueous media, which quickly and selectively marked cytoplasm of HeLa cells and posed no toxicity to the living cells. The fluorogen is thus a promising candidate mate-rial for cell imaging as a sensitive, selective and cytocompatible biosensor.

关键词： aggregation-induced emission biosensor cell imaging

聚｛11-[(4′-正庚氧基-4-联苯基)羰基]氧-1-十一炔｝的相结构与相转变

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高分子学报 2010年第6期20卷 759-764页

作者：余振强刘嘉浩朱才镇陈尔强 lam jacky wing yip 唐本忠北京大学化学与分子工程学院高分子科学与工程系高分子化学与物理教育部重点实验室北京100871 深圳大学化学与化工学院深圳市功能高分子重点实验室深圳518060 香港科技大学化学系

采用示差扫描量热法(DSC)、一维(1D)、二维(2D)广角X-射线衍射(WAXD)和偏光显微镜(PLM)等研究手段对聚{11-[(4′-正庚氧基-4-联苯基)羰基]氧-1-十一炔}(PA-9,7)的本体相转变和相结构进行研究,并采用分子动力学方法对相结构进行模拟.结... 详细信息

采用示差扫描量热法(DSC)、一维(1D)、二维(2D)广角X-射线衍射(WAXD)和偏光显微镜(PLM)等研究手段对聚{11-[(4′-正庚氧基-4-联苯基)羰基]氧-1-十一炔}(PA-9,7)的本体相转变和相结构进行研究,并采用分子动力学方法对相结构进行模拟.结果表明,样品的相转变为近晶B相(SmB)近晶A相(SmA)各向同性态(Iso).在近晶B相中,侧链在层状结构中排列成具有六次对称性的准长程有序结构。

关键词：聚炔液晶相结构相转变X-射线衍射

5-{[(4′-正戊基氧-4-联苯基基)羰基]氧}-1-戊炔的相转变与相结构

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物理化学学报 2010年第4期26卷 817-821页

作者：余振强朱才镇田赛刘剑洪 lam jacky wing yip 唐本忠深圳大学化学与化工学院深圳市功能高分子重点实验室广东深圳518060 香港科技大学化学系

采用差示扫描量热(DSC)、一维(1D)广角X射线衍射(WAXD)、热台偏光显微镜(PLM-hotstage)等研究手段对含联苯液晶基元的侧链液晶聚炔单体5-{[(4′-正戊基氧-4-联苯基基)羰基]氧}-1-戊炔(A3EO5)的本体相转变和相结构进行了研究.DSC和1D-WAX... 详细信息

采用差示扫描量热(DSC)、一维(1D)广角X射线衍射(WAXD)、热台偏光显微镜(PLM-hotstage)等研究手段对含联苯液晶基元的侧链液晶聚炔单体5-{[(4′-正戊基氧-4-联苯基基)羰基]氧}-1-戊炔(A3EO5)的本体相转变和相结构进行了研究.DSC和1D-WAXD实验结果表明,A3EO5在升温和降温过程中均呈现四个相转变过程,形成双向性液晶.样品从各向同性态降温至室温过程中,首先形成近晶A相,随后进入层内排列具有准长程有序的近晶B相,继续降温将形成层内为正交排列的近晶E相,在此之后样品进入晶相.PLM结果指出样品在各向同性态降温过程中分别形成球状织构、角锥织构和同心圆弧织构.

关键词：液晶相结构相转变 X射线衍射近晶相

5-[4′-正庚基-氧-联苯基-4-氧-羰基]基-1-正戊炔的晶体结构研究

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高等学校化学学报 2005年第7期26卷 1366-1368,M010页

作者：刘雷静耿建新周云春尹丽李杲周恩乐 jacky lam wing yip 唐本忠中国科学院研究生院长春应用化学研究所高分子物理与化学国家重点实验室长春130022 香港科技大学化学系

The crystal structure of 5-{[(4′-heptoxy-biphenylyl-4-yl)oxy]carbonyl}-1-pentyne({A3E′O7}) was investigated by wide angle X-ray diffraction(WAXD), transmission electron microscope(TEM) and atom force microscope(AFM). The structures of A3E′O7 solution-crystal and melt-crystal are the same. The crystals belong to the monoclinic P112/m space group, the cell parameters are {a0.589 nm}, b0^771 nm, c4.75 nm, αβ90° and γ93.8°, the calculated cell density is {1.167 g/cm+3}.

关键词：晶体结构 5-[4′-正庚基-氧-联苯基-4-氧-羰基]基-1-正戊炔透射电镜 X射线衍射

硝基苯衍生物结构与其淬灭聚(2,5-二戊氧基对亚苯基亚乙炔基)荧光效率的关系

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高分子学报 2007年第3期17卷 293-296页

作者：徐宏丽佟斌石建兵刘旸田旭玲董宇平 lam jacky wing yip 唐本忠北京理工大学材料科学与工程学院北京100081 北京理工大学理学院北京100081 香港科技大学化学系

The poly(2,5-dipentyloxy-para-phenylene ethynylene)(P) was synthesized by Pd-catalyzed Sonogashira coupling *** to causing energy transfer between the nitrobenzene’s quenchers and the polymer chains through the charge-transfer interaction,the fluorescence quenched properties of P varied obviously with the para-substituting group’s structure in the nitrobenzene *** fluorescence quenching efficiency of quenchers improved with increasing of electron repulsion capability of the para-substituting *** fluorescence quenching efficiency increased nonlinearly with the concentration of the quenchers and had,however,no relation with the quenching time.

关键词：聚对亚苯基亚乙炔基硝基苯衍生物荧光淬灭

Precursor engineering enables high-performance all-inorganic CsPbIBr_(2) perovskite solar cells with a record efficiency approaching 13%

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Journal of Energy Chemistry 2024年第3期90卷 16-22,I0003页

作者： Qingyan Chang Yidan An Huaiman Cao Yuzhen Pan Liangyu Zhao Yulong Chen Yi We Sai-wing Tsang Hin-Lap yip Licheng Sun Ze Yu State Key Laboratory of Fine Chemicals Dalian University of Technology(DUT)Dalian 116024LiaoningChina Department of Materials Science and Engineering City University of Hong KongKowloon 999077Hong KongChina School of Chemistry Dalian University of Technology(DUT)Dalian 116024LiaoningChina Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)Dalian University of Technology(DUT)Dalian 116024LiaoningChina School of Energy and Environment City University of Hong KongKowloon 999077Hong KongChina Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry School of ScienceWestlake UniversityHangzhou 310024ZhejiangChina Department of Chemistry School of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of Technology10044 StockholmSweden

All-inorganic CsPbIBr_(2) perovskite has attracted widespread attention in photovoltaic and other optoelectronic devices because of its superior thermal ***,the deposition of high-quality solutionprocessed CsPbIBr_(2) perovskite films with large thicknesses remains ***,we develop a triple-component precursor(TCP) by employing lead bromide,lead iodide,and cesium bromide,to replace the most commonly used double-component precursor(DCP) consisting of lead bromide and cesium ***,the TCP system significantly increases the solution concentration to 1.3 M,leading to a larger film thickness(~390 nm) and enhanced light *** resultant CsPbIBr_(2) films were evaluated in planar n-i-p structured solar cells,which exhibit a considerably higher optimal photocurrent density of 11.50 mA cm^(-2) in comparison to that of DCP-based devices(10.69 mA cm^(-2)).By adopting an organic surface passivator,the maximum device efficiency using TCP is further boosted to a record efficiency of 12.8% for CsPbIBr_(2) perovskite solar cells.

关键词： All-inorganic perovskite solar cells CsPbIBr_(2) Precursor engineering Solubility High performance

Using Five Music Instructional Methods to Illustrate the Social Constructive Music Teaching Framework in Hong Kong Primary Level Music Education

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Sino-US English Teaching 2024年第6期21卷 247-269页

作者： lam wing Yin The Hong Kong University of Science and Technology Hong Kong SAR

Music education under the frame name of arts education has been integrated into the primary and secondary education curriculums in Hong Kong for more than 20 years,starting from 2001,the year of launching the Learning to Learn curriculum for the reconstruction of the education system for the younger *** education,embedded into the arts education,was therefore regarded as one of the key subjects to cultivate and uplift student holistic development,focusing on aesthetic skill training and moral growth *** research was an exploration study of music teaching practices from two private international and two general public school music teachers at the primary school *** value of this study rested on borrowing the idea of Shulman’s pedagogical content knowledge(PCK)principle to create a social constructivist music teaching framework from five commonly-used instructional methods,namely,Orff,Kodaly,Dalcrozes,Suzuki,and Gordon’s *** on the evaluations of these four case studies,hypotheses on the differences in the PCK were tested with the types of schools and found to be no *** preliminary results suggested that music teachers in private international schools had similar pedagogical approaches to music instruction to teachers in aided-public ***,the modeling,guiding,and training approach was identified as a grounded teaching method for music education at the primary school level regardless of different types of *** implications like the further development of the framework were discussed.

关键词： pedagogy social constructivism music education primary school Hong Kong

PbS纳米粒子与全共轭高分子的自组装膜原位复合及其光电转换性质

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高分子学报 2005年第3期15卷 313-316页

作者：高玲玲佟斌姚桂君董宇平张茂锋 lamjacky wing yip 唐本忠北京理工大学材料科学与工程学院北京100081 北京大学化学与分子工程学院北京100871 香港科技大学化学系

Full conjugated multilayer thin films fabricated by the alternate adsor ption of partially doped polyaniline (PANI) as a polycation and water-soluble p o ly(4-carboxyphenyl)acetylene (PA) as a polyanion were used as nanoreactors to s t udy the in situ preparation of PbS ***,the self-assembled mu ltilayers were immersed in a 1 mol/L NaOH solution to fabricate a controlled con tent of free carboxylic acid binding *** reaction within the polyme r film was initiated by absorbing Pb 2+ from a 0 4 mol/L aqueous solutio n of Pb(Ac) 2 and followed by exposing the film to H 2S ***-Vis absorp tion studies re veal that the absorption spectral profiles of the films are dependent on the dip ping time of the film in the Pb(Ac) 2 *** and TEM microscopic examina tions o f the films reveal that PbS crystals with rhomboid structures are formed in the *** particles of narrow size distribution stand vertically on the fil m *** to being doped by PbS,the photoelectric conversion property of ultra-thin composite films,which can be measured with a conventional three-e lectrod e photoelectrochemical cell using 0 5 mol/L KCl solution as the supporting elec tr olyte,is improved *** results show that the value of the photocurren t for an 8\|layer film is 3 times higher than that of the original film.

关键词：光电转换性质共轭高分子原位复合自组装膜 PbS 无机纳米粒子聚合物复合材料纳米反应器复合材料性能有机聚合物化学反应器特殊性质人为控制粒子粒径制备方法机械设备光子学磁学