检索结果-南通市图书馆

Science China Chemistry 2015年第6期58卷 1027-1031页

作者： Liangfu He Deyang Ji Erjing Wang yonggang zhen Huanli Dong Wenping Hu Beijing National Laboratory for Molecular Science Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

The organic single-crystal field-effect transistors using anthracene derivative, H-Ant as an active layer with source/drain electrodes decorated by metal charge transfer salt(Cu TCNQ) were fabricated. We demonstrated that this bottom-contact structure displayed an obvious improvement in the electrical characteristics relative to their pristine copper and top-contact gold electrode counterparts. This observation could be ascribed to the lower contact resistance resulting from the energetic match between electrodes and semiconductor.

关键词： metal charge transfer salt anthracene derivative organic single-crystal field-effect transistors

Tuning the aggregation structure and electrical property of 2.6-diphenyl-anthracene by the density of octadecyltrichlorosilane

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2016年第12期59卷 1645-1650页

作者： Xi Zhang Xiaosong Chen Jie Liu yonggang zhen Huanli Dong Liqiang Li Wenping Hu Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of ChemistryChinese Academy of Sciences Advanced Nano-Materials Division Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences

The physical and chemical properties of organic semiconductors are closely related to their aggregation structure. Tuning of aggregation structure and electrical property is important for the application in organic electronics. In this study, a facile way to tune the aggregation structure and electrical property of 2.6-diphenyl-anthracene(DPA) is realized by using the octadecyltrichlorosilane(OTS) modification layer with different density which is fabricated by controlling reaction temperature and *** with low density OTS, DPA forms larger grain size, less grain boundaries, and better molecular ordering on high density OTS surface. As a result, the charge transporting mobility of DPA film on high density OTS surface is about two orders of magnitude higher than that on low density OTS surface. The tunable aggregation structure and electrical property of DPA demonstrated here would be meaningful for the application of DPA in organic electronics.

关键词： organic transistor DPA OTS density aggregation structure

Extension of Highly Efficient Alcohol-promoted Rearrangement into One-pot Domino Palladium-catalyzed Carbonylation for Sterically Crowded Aromatic Six-membered Imides

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2023年第6期39卷 1106-1110页

作者： GUO Rong ZHANG Jingmei JIA Xiaohui SHI Chunfeng QIE Fengxiang zhen yonggang Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029P.R.China State Key Laboratory of Catalytic Materials and Reaction Engineering Research Institute of Petroleum ProcessingSINOPECBeijing 100083P.R.China National Demonstration Center for Experimental Life Sciences&Biotechnology Education Beijing Normal University100875 BeijingP.R.China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074P.R.China State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275P.R.China State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024P.R.China

Aromatic six-membered imides suffer the introduction of bulky substituents at the imide positions due to the formation of isoimides and low reactivity,preventing from the investigation of the intrinsic molecular ***,we found a highly efficient alcohol-promoted rearrangement from isonaphthalimide to naphthalimide under acid or basic nonaqueous conditions,which can be regarded as model compounds for aromatic six-membered *** proposed two-step nucleophilic substitutions in the isomerization mechanistic pathways that were verified by the separation of a key ***,in-situ ^(1)H NMR exhibited the first-order kinetics for the isoimide loss ***,the alcohol-promoted isoimide-imide rearrangement was extended to a palladium-catalyzed one-pot domino carbonylation reaction toward sterically crowded aromatic six-membered imides.

关键词： Bulky aromatic imide Imide isomerization Domino synthesis Organic semiconductor

Efficient Construction of Highly-fused Diperylene Bismides by Cu/Oxalic Diamide-promoted Zipper-mode Double C—H Activation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2020年第1期36卷 110-114页

作者： LU Xiuqiang LIN Hui zhen yonggang DONG Huanli ZHANG Xiaotao HU Wenping School of Ocean Science and Biochemistry Engineering Fuqing Branch of Fujian Normal UniversityFuzhou 350300P.R.China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of SciencesTianjin UniversityTianjin 300072P.R.China

Copper/oxalic diamide-promoted dimerization of tetrachlorinated perylene bisimide to construct highly-fused diperylene bisimides through Ullmann coupling and zipper-mode double C—H activation has been developed in this *** one-step reaction combining homocoupling with C—H activation proceeded smoothly under the action of inexpensive metal-ligand *** protocol is expected to expand the available synthetic tools for condensed ring systems of perylene bisimide(PBIs).

关键词： Organic semiconductor Perylene bisimide Dimerization Ullmann homocoupling C-H activation

Halogenated Thienoacene Derivatives with Improved Emission Properties

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2024年第4期40卷 699-703页

作者： ZHANG Jingmei MENG Zhihao zhen yonggang HE Ping YU Panpan HU Wenping Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029P.R.China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan430074P.R.China State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian116024P.R.China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal UniversityNanchong637000P.R.China Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal UniversityNanchang330022P.R.China MOE Key Laboratory of Organic Integrated Circuits&Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of SciencesTianjin UniversityTianjin300072P.R.China

Thienoacenes is one of most important groups of semiconducting materials due to the high stability and superior ***,there are scarce studies on the emission properties of thienoacenes to ***,we synthesized fluorinated and chlorinated dibenzo[d,d’]thieno[3,2-b;4,5-b’]dithiophenes(DBTDTs)derivatives F6-DBTDT and Cl6-DBTDT by sulfoxide cyclization,significantly lowering the energy levels relative to the parent compound *** to single crystal structure analysis,F6-DBTDT molecules adopt one-dimensional slipped stacking with closeπ-πinteractions of 3.43Å(1Å=0.1 nm),which is different from the parent compound DBTDT with herringbone stacking ***,the halogenated DBTDT derivatives exhibit enhanced emission properties both in solution and in the solid state,opening up possiblities to improve photoluminescence of thienoacences by halogenation.

关键词： Thienoacene Halogenation Photoluminescence Aggregation structure

Hexyl substitution of pentathienoacene toward a significant improvement in charge transport

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2019年第4期30卷 903-905页

作者： Ping He Hantang Zhang Chunhui Xu yonggang zhen Huanli Dong Wenping Hu Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal University Beijing National Laboratory for Molecular Science Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences College of Chemistry and Material Science Shandong Agriculture University Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry School of Science Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

A novel semiconductor, dihexyl-substituted pentathienoacene(C6-PTA) is designed and synthesized in five steps with the total yield up to 25.2%. The introduction of hexyl chains endow the thin film semiconductor with about threefold increase in carrier mobility and one to three orders of magnitude improvement in current on/off ratio. Furthermore, single crystal FETs based on C6-PTA exhibited mobility up to 0.64 cm^2 V^(-1) s^(-1), which is over 50 times higher than the thin film counterpart. The results indicate clearly that C6-PTA is a promising organic semiconductor with high stability.

关键词： Organic field-effect transistors Organic semiconductors Thienoacene Charge transport Stability

Copper-promoted domino cyanation/Ullmann coupling toward difunctionalized acenaphthylenes with various optoelectronic properties

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2023年第5期66卷 1450-1456页

作者： Yang Wang Yang Hu Junfeng Guo Zongrui Wang Yang Li Fengxiang Qie Chunfeng Shi Lei Zhang yonggang zhen Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640China Normal College Shenyang UniversityShenyang 110044China State Key Laboratory of Catalytic Materials and Reaction Engineering Research Institute of Petroleum ProcessingSINOPECBeijing 100083China

Tremendous progress has been made on aromatic fusion of acenaphthylene towards organic ***,scarce studies focus on the functionalization of acenaphthylene without resort to aromatic extension,although vinylene double bond is highly reactive ascribed to the ring strain of the fused ***,for the first time we employ copper-promoted domino cyanation/Ullmann coupling to achieve a series of difunctionalized acenaphthylene imides(ANIs)with varied optoelectronic *** Ullmann homocoupling and crosscoupling can be combined with cyanation for difunctionalization of *** introduction of cyano groups influences oppositely not only the energy levels but also the antiaromaticity of the fivemembered rings in ANIs relative to the dimethylamino substituent due to the electron donating or withdrawing *** altering the functional units,the optical and electrical characteristics have been tailored rationally;thus p,n or ambipolar semiconducting properties can be achieved for the ANI *** article opens up possibilities to the development of organic semiconducting materials based on ANIs without aromatic extension,which is promising for applications in organic electronics.

关键词： acenaphthylene difunctionalization organic semiconductors organic field-effect transistors

A new fluorescent quinoline derivative toward the acid-responsivity in both solution and solid states

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2020年第11期31卷 2909-2912页

作者： Pu Wang Dan Liu Yongshuai Wang Pan Zhang Panpan Yu Mincan Wang yonggang zhen Huanli Dong Wenping Hu College of Chemistry and Institute of Green Catalysis Zhengzhou UniversityZhengzhou 450052China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Beijing Key Laboratory for Optical Materials and Photonic Devices Department of ChemistryCapital Normal UniversityBeijing 100048China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)&Department of Chemistry School of ScienceTianjin UniversityTianjin 300072China

In this article,an acid-responsive luminescent material,1,4-di(quinoline-6-yl)buta-1,3-diyne(DQBD)is designed and *** different pH values,gradual changes of fluorescence colors for DQBD in both solution and solid phases are demonstrated due to the protonation ***,such responsive characteristics can also be reversible,suggesting DQBD as a promising fluorescent material with great potential for reusable-and accurate-p H sensors in the future.

关键词： Quinoline derivative Stimuli-responsive Protonation effect Fluorescence switch pH sensor

Carbon nanotubes assisting interchain charge transport in semiconducting polymer thin films towards much improved charge carrier mobility

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2019年第6期62卷 813-822页

作者： Zhe zheng zhenjie Ni Xiaotao Zhang yonggang zhen Huanli Dong Jin Zhang Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Science Department of ChemistrySchool of ScienceTianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences Center for Nanochemistry Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular Sciences (BNLMS)College of Chemistry and Molecular EngineeringPeking University

Conjugated polymers attracted much attention in the past few decades due to their wide applications in various optoelectronic devices and circuits. The charge transport process in conjugated polymers mainly occurs in the intrachain and interchain parts, where the interchain charge transport is generally slower than intrachain transport and may slow down the whole charge transport properties. Aiming at this issue, herein we employ semiconducting single-walled carbon nanotubes(s-SWNTs) as efficient charge-transporting jointing channels between conjugated polymer chains for improving the charge transport performance. Taking the typical conjugated polymer, ploy-N-alkyl-diketopyrrolopyrrole-dithienylthieno[3,2-b]thiophene(PDPP-TT) as an example, polymer thin film transistors(PTFTs) based on the optimized blended films of PDPP-TT/s-SWNTs exhibit an obviously increasing device performance compared with the devices based on pure PDPP-TT films, with the hole and electron mobility increased from 2.32 to 12.32 cm^2 V^-1 s^-1 and from 2.02 to 5.77 cm^2 V^-1 s^-1, respectively. This result suggests the importance of forming continuous conducting channels in conjugated polymer thin films, which can also be extended to other polymeric electronic and optoelectronic devices to promote their potential applications in large-area, low-cost and high performance polymeric electronic devices and circuits.

关键词： conjugated polymer s-SWNTs connected conducting channel carrier mobility

Polymorph and anisotropic Raman spectroscopy of Phz-Hca cocrystals

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2021年第1期64卷 169-178页

作者： Weigang Zhu Yunli Wang Chengcheng Huang Lingyun Zhu yonggang zhen Huanli Dong Zhixiang Wei Dong Guo Wenping Hu Laboratory of Organic Solids Institute of ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Institute of Acoustics Chinese Academy of SciencesBeijing100190China School of Materials Science and Engineering Beihang UniversityBeijing100191China National Center for Nanoscience and Technology Beijing100190China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University&Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin300072China

The nucleation and growth mechanism and polymorph-property correlations in the molecular cocrystal field are widely sought but currently remain unclear. Herein, a new wire-like morphology of phenazine(Phz)-chloranilic acid(H2ca) cocrystal(PHC) is demonstrated for the first time, and the self-assembly of Phz and H2ca is controlled to selectively prepare kinetically stable wires and thermodynamically stable plates. Specifically, low precursor concentration is beneficial for one-dimensional(1D) self-assembly along the [010] crystallographic direction, while only supersaturation can trigger 2D self-assembly along the [100] and [010] directions, respectively. This is understandable in terms of the(020) face showing the largest attachment energy(Eatt) and the(002) face possessing the smallest surface energy(Esurf). Moreover, anisotropic Raman spectra related to the mode symmetry and atomic displacements in two types of PHCs are revealed, and the same Raman-active vibrational bands of PHC wire and plate show different polarization responses, which is intrinsically ascribed to their different molecular ***, this is the first case that morphologies of cocrystal are precisely tuned with comprehensive investigations of their anisotropic vibrational characteristics.

关键词： molecular cocrystal polymorph self-assembly Raman spectroscopy anisotropy