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Multifunction-oriented high-mobility polymer semiconductors

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national Science Review 2024年第3期11卷 16-19页

作者： Mingliang Zhu yunlong Guo yunqi {2. beijing national {2. for molecular sciences Organic Solids Laboratory Institute of Chemistry Chinese Academy of Sciences School of Chemical sciences University of Chinese Academy of Sciences

The discovery of conductive polyacetylene has initiated interdisciplinary research into condensed matter physics and synthetic chemistry in organic electronics. Unlike their inorganic and small-molecule counterparts, polymer semiconductors possess the inherent advantages of facile solution processing,large-area manufacturing, excellent mechanical strength and intrinsic flexibility.

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organic single crystals or crystalline micro/nanostructures: Preparation and field-effect transistor applications

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Science china chemistry 2010年第6期53卷 1225-1234页

作者： FU XiaoLong,WANG ChengLiang,LI RongJin,DONG HuanLi & HU WenPing beijing national {2. for molecular sciences,key {2. of organic solids,institute of chemistry,Chinese Academy of sciences,beijing {12.,china beijing national {2. for molecular sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing China

organic single crystals hold great promise for the development of organic semiconductor materials,because they could reveal the intrinsic electronic properties of these materials,providing high-performance electronic devices and probing the structureproperty *** article reviews the preparation methods for organic single crystals or crystalline micro/nanostructures,including vapor phase growth methods and solution-processed methods,and summarizes a few methods employed in the fabrication of field-effect transistors along with dozens of examples concerning both small molecules and polymers with high field-effect performance.

关键词： organic single crystal physical vapor transport (PVT) solution-processed technique field-effect transistors (FETs) micro/nanostructures

Biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces

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Progress in Natural Science:Materials International 2012年第5期22卷 493-501页

作者： Quanyong liu a,Liqun Zhang c,Lei Jiang a,b a key {2. of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education,School of chemistry and Environment,Beihang University,beijing 100191,PR china b beijing national {2. for molecular sciences(MNLMS),key {2. of organic solids,{12. of chemistry,Chinese Academy of sciences,beijing 100190,PR china c State key {2. of organic-Inorganic Composites,beijing University of Chemical Technology,beijing 10002.,PR china key laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry and Environment Beihang University Beijing 100191 PR China State key laboratory of {2.–In{2. Composites Beijing University of Chemical Technology Beijing 100029 PR China beijing national {2. for molecular sciences (MNLMS) Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 PR China

Bioinspired by the spinning of spider silks,the biomimetic preparation of elastomeric fibers with micro/nano structures on the surfaces was attempted,and as a result,three types of ultrafine fullvulcanized powdered nitrile-butadiene rubber(UFPNBR)/thermoplastic polyurethane(TPU) fibers were *** first fiber was only decorated by the micron-sized grooves on the surface,and the second fiber was dotted by both the micron-sized grooves and nanometer-sized spheres on the surface,while the third fiber was helical and with a concave-convex *** biomimetic preparation mainly consisted of four steps,and the formation mechanism was described as an integrated mechanism of diffusion,coagulation,self assembly,and microphase *** micro/nano structures on the fibers were controlled by changing the mass ratio of UFPNBR to TPU and environment of vertical *** UFPNBR/TPU elastomeric fibers were hoped to have an integrated function of superhydrophobicity,self cleaning,and mechanical improvement of toughness or strength.

关键词： Biomimetic preparation Elastomeric fiber Micro/nano structure Self assembly Spider silk

Study of the effect of atorvastatin on the interaction between ICAM-1 and CD11b by live-cell single-molecule force spectroscopy

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Science china chemistry 2010年第4期53卷 752-758页

作者： LI Yi1, SHI XiaoLi2. liu HuiLiang1, YI ShaoQiong3, ZHANG XueJie2.& FANG XiaoHong2.1Department of Cardiology, the General Hospital of Chinese People’s Armed Police Forces, beijing 100039,{2. 2.1} national laboratory for molecular sciences institute of chemistry, Chinese Academy of sciences, beijing 100190,{2. 3State key laboratory of Pathogen and Biosecurity beijing institute of Microbiology and Epidemiology, beijing 100071,{2. Department of Cardiology the General Hospital of Chinese People’s Armed Police Forces Beijing China beijing national {2. for molecular sciences Chinese Academy of Sciences Beijing China institute of chemistry Chinese Academy of Sciences Beijing China State key laboratory of Pathogen and Biosecurity Beijing China beijing institute of Microbiology and Epidemiology Beijing China

The interaction between the cell adhesion molecule CD11b and its ligand ICAM-1 plays an important role in inflammatory responses in the disease of atherosclerosis. Atorvastatin is a commonly prescribed statin drug which has been considered as one of the most potent therapeutic agents for atherosclerosis due to its lipid-lowering effect. Recently, there is a growing body of evidence that atorvastatin has anti-inflammatory effect. We have applied the advanced method of live-cell single-molecule force spectroscopy to investigate the effect of atorvastatin on adhesion force between ICAM-1 and CD11b. Our result showed that single-molecule binding force of ICAM-1 and CD11b detected by AFM in the living cells was about 40 pN, and atorvastatin did not affect this force by blocking ICAM-1 or CD11b. This was different from the ICAM-1 monoclonal antibody, which could directly reduce the binding force of ICAM-1 and CD11b. Flow cytometry results revealed that atorvastatin pretreatment decreased the ICAM-1 expression in TNF-α activated HUVECs, which may contribute to its anti-inflammatory effect. The study provides a new approach to study anti-inflammatory mechanism for clinic drugs.

关键词： atherosclerosis atorvastatin atomic force microscopy single-molecule force spectroscopy protein-protein interaction

Electron structure and substituent effects in o-,m-,p-IC_6H_4OCH_3 iodoanisoles

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Science china chemistry 2009年第11期52卷 1932-1937页

作者： TONG ShengRui,WANG WeiGang,MA ChunPing,GE MaoFa & WANG DianXun beijing national {2. for molecular sciences(BNLMS),State key {2. for Structural chemistry of Unstable and Stable Species,institute of chemistry,Chinese Academy of sciences,beijing {{12.,{12. beijing national {2. for molecular sciences (BNLMS) State Key Laboratory for Structural Chemistry of Unstable and Stable Species Institute of Chemistry Chinese Academy of Sciences Beijing China

The electronic structures and substituent effects in o-,m-,and p-iodoanisoles have been investigated by ultraviolet photoelectron spectroscopy(UPS).The observed UPS bands were analyzed by combining empirical arguments and theoretical *** to the electron-donating nature of both iodoand methoxy substituents,the first ionization potentials of the three iodoanisoles are lower than those of iodobenzene and *** presence of the two substituents in iodoanisoles leads to an electronrich structure,which might contribute to the observed high reactivity of iodoanisoles in a number of organic reactions.

关键词： electronic structures substituent effects ultraviolet photoelectron spectroscopy reactivity

Cellulose conversion to polyols on supported Ru catalysts in aqueous basic solution

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Science china chemistry 2010年第7期53卷 1476-1480页

作者： DENG TianYin,SUN Jiying & liu HaiChao {2. national laboratory for molecular sciences,State key laboratory for Structural chemistry of Stable and Unstable Species Green chemistry Center,College of chemistry and molecular Engineering,Peking University,{2. 100871,china beijing national {2. for molecular sciences State Key Laboratory for Structural Chemistry of Stable and Unstable Species Peking University Beijing China Green chemistry Center College of Chemistry and Molecular Engineering Peking University Beijing China

It is of great significance and challenge to achieve direct conversion of cellulose to specific polyols,e.g.,ethylene glycol and propylene *** such selective conversion,a novel one-pot approach was studied by combination of alkaline hydrolysis and hydrogenation on supported Ru catalysts.A wide range of bases including solid bases,e.g.,Ca(OH)2.and La2.3,and phosphate buffers were examined in the cellulose reaction in water,and the cellulose conversions and polyol products depended largely on the basicity or pH values in the aqueous *** glycol,1,2.propanediol,and especially 1,2.5-pentanetriol were obtained with selectivities of 15%,14% and 2.%,respectively,at 38% cellulose conversion at pH 8 in phosphate buffer *** preliminary results provide potentials for efficient conversion of cellulose to targeted polyols by using the advantages of bases.

关键词： cellulose polyols Ru catalysts solid bases aqueous basic solutions

Low dipole moment large β electrooptic chromophores based on exocyclic double bond conjugated bridge

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Chinese Science Bulletin 2001年第18期46卷 1517-1522页

作者： WANG Peng, LI Shaojun & YE ChengCenter for molecular Science, organic {2. laboratory, institute of chemistry, Chinese Academy of sciences, beijing 100080, china Center for molecular Science Organic Solids Laboratory Institute of Chemistry Chinese Academy of Sciences Beijing China

Novel low dipole moment (μ) and large first hyperpolarizability (β) electrooptic chromophores have been designed based on the special characteristic of reversed dipole moment in the excited state of exocyclic double bond (ECDB) conjugated bridge by the optimization of the substituted method, and their electronic and second-order nonlinear optical properties have been theoretically investigated by employing the AM1/FF and ZINDO/S-CI approaches. By extending the conjugation length and optimizing the donor/acceptor strength, the oscillator strength of the excited transition that contributes to the molecular nonlinearity can be further enhanced. The designed chromophores possess a larger figure of merit (FOM) than that of 4-N,N-dimethylamino-4’-nitrostilbene (DANS), and lower (5 D) ground state dipole *** low dipole moment (μ) and large first hyperpolarizability (β) electrooptic chromophores have been designed based on the special characteristic of reversed dipole moment in the excited state

关键词： AM1/FF ZINDO/S-CI molecular design dipole moment (μ) first hyperpolarizability (β) exocyclic double bond.

Stable hydrogen-bonded organic frameworks and their photo-and electro-responses

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Nano Research 2024年第8期17卷 7675-7699页

作者： ying Hou Xin-Song Huang Sheng-Hao Gong Chen liu Yangyang liu Tian-Fu liu State key laboratory of Structural {2. Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of sciences Beijing 100049China Department of chemistry and Biochemistry California State UniversityLos AngelesCalifornia 90032USA College of chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China

Hydrogen-bonded organic frameworks(HOFs)are a recent class of porous materials that have garnered considerable research interest owing to their distinctive *** can be constructed through judicious selection of H-bonding motifs,which are further enforced by other weak intermolecular interactions such asπ–πstacking,van der Waals forces,and framework *** advantage of these interactions,we can expand the functional field of HOFs by introducing active ***,researchers have made substantial advancements in using HOFs for chemical sensing,catalysis,proton conduction,biological applications,and *** low bonding energy of H-bonds allows for precise control over the concentration of ligands in solvents,forming diverse HOF *** varied structures offer significant advantages for producing HOFs with photo-responsive and electro-responsive ***,the presence of H-bonds in HOFs results in their inherent lower stability compared to metal-organic frameworks(MOFs)and covalent-organic frameworks(COFs)formed via coordination and covalent bonds,*** a result,the pursuit of stable and innovative HOF materials with novel functional sites remains an ongoing *** review provides an overview of recent research progress in the development of new strategies for stable HOF synthesis and applications of HOFs with stimuli-responsive *** first classified all synthetic methods reported to date and discussed the stable HOFs synthesized,as well as their unique properties and *** addition,we summarized the applications of HOFs utilizing their synergistic responses to external stimuli,including photo,electrical,pressure,and chemical *** systematically reviewed stable HOF synthesis and applications,which may lead to a deeper understanding of the structure–activity relationship for these materials and guide future HOF design.

关键词： stable hydrogen-bonded organic frameworks(HOFs) photo-response electro-response photoelectric synergistic response

Syntheses, structures and magnetic properties of a family of one-dimensional M(Ⅱ)-lanthanide(Ⅲ) (M = Ni(Ⅱ) and Zn(Ⅱ)) coordination polymers

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Science china chemistry 2007年第3期50卷 308-317页

作者： ZHANG Wen, ZHAO Fei, liu Tao & GAO Song beijing {2. laboratory for molecular sciences, State key laboratory of Rare Earth Materials chemistry and Applications, College of chemistry and molecular Engineering, Peking University, beijing 100871,{{12. beijing national {2. for molecular sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications College of Chemistry and Molecular Engineering Peking University Beijing China

A series of 1D nickel(II)/zinc(II)-lanthanide(III) coordination polymers, [M(μ-L)2.n(NO3)3]n·solvents (HL = bis(2.pyridylcarbonyl)amine; M = Ni, Ln = Gd (1·NiGd), Tb (2.NiTb), Dy (3·NiDy), Ho (4·NiHo), Y (5·NiY); M = Zn, Ln = Gd (6·ZnGd), Tb (7·ZnTb), Dy (8·ZnDy), Ho (9·ZnHo); solvents = H2. or H2.-ethanol), was synthesized and characterized. All of the complexes are isostructural at 2.3 K and crystallize in the orthorhombic space group Fddd. Magnetic measurements were performed on 1―9, where weak ferromagnetic interaction is found in 1·NiGd, ferromagnetic interaction in 2.NiTb and 3·NiDy, and antiferromagnetic interaction in 4·NiHo. A remarkable dc magnetic field dependence of ac susceptibilities was found in this series of complexes.

关键词： nickel lanthanide 3d-4f coordination polymer magnetic property