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Organic transistor for bioelectronic applications

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Science China Chemistry 2017年第4期60卷 437-449页

作者： Hongguang Shen Chong-An Di daoben zhu 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

Organic field-effect transistors(OFETs) are recently considered to be attractive candidate for bioelectronic applications owing to their prominent biocompatibility,intrinsical flexibility,and potentially low cost associated with their solution processibility.Over the last few years,bioelectronic-application-motivated OFETs have attracted increasing attention towards next generation of biosensors,healthcare elements and artificial neural interfaces.This mini review highlights the basic principles and recent progress in OFET based bioelectronics devices.The key strategies and the forecast perspectives of this research field are also briefly summarized.

关键词：电子应用有机晶体管有机场效应晶体管生物相容性器件应用生物传感器生物电子学医疗保健

Unexpected Photocatalytic Degeneration of NAD^(+) for Inducing Apoptosis of Hypoxia Cancer Cells

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CCS Chemistry 2023年第10期5卷 2324-2333页

作者： Shengpeng Xia Haotian Bai Endong Zhang Wen Yu Zhiqiang Gao Fengting Lv Yiming Huang daoben zhu Shu Wang Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190 College of Chemistry University of Chinese Academy of SciencesBeijing 100049

Developing customized chemical reactions that could regulate a specific biological process on demand is regarded as an advanced and promising strategy for treating diseases.However,conventional chemical reactions become challenging in complex physiological environments,which demand mild reaction conditions,high efficiency,good biocompatibility,and strong controllability.Moreover,the effects of the achieved reactions on the real biological system are usually further lessened.Herein,we describe an advanced photocatalytic reaction that irreversibly converted nicotinamide adenine dinucleotide(NAD+)to nicotinamide and adenosine diphosphate(ADP)-ribose by the cationic conjugated poly(fluorene-co-phenylene)(PFP).This reaction was introduced to tumor cells and triggered cell apoptosis.Under white-light illumination,the photocatalytic reaction decreased the NAD+ratio in tumor cells,disrupted the mitochondrial membrane potential,inhibited the synthesis of adenosine triphosphate(ATP),and effectively induced apoptosis.We propose a mechanism of the reaction where PFP is photoexcited to PFP*,and the obtained photoelectrons are transferred from PFP*to NAD+to produce nicotinamide and another unstable intermediate,ADP-ribosyl radical.ADP-ribosyl radical quickly reacts with triethanolamine to form ADP-ribose.This intracellular utilization of a specific photocatalytic reaction could offer a new approach to affect biological function for efficient cancer treatment.

关键词： photocatalysis conjugated polymer intracellular catalysis hypoxic tumor apoptosis

Organic thermoelectrics for green energy

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National Science Review 2016年第3期3卷 269-271页

作者： Chong-an Di Wei Xu daoben zhu Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of Sciences

INTRODUCTION Driven by the increasing demand for electricity,a burning desire in scientific fields is to harvest electricity from renewable energy using a green route.Thermoelectric materials can meet this requirement... 详细信息

关键词： PEDOT Organic thermoelectrics for green energy ZT flexible

Transmission electron microscopy study on microstructure in Langmuir-Blodgett films of fullerene derivatives

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Chinese Science Bulletin 1998年第8期43卷 649-652页

作者： Chengfen Long Yu Xu Changcheng zhu daoben zhu Chinese Acad Sci Inst Chem Beijing 100080 Peoples R China

Surface pressure_area isotherms of two C 60derivatives, ethoxycarbonyldecylene_fullerene and bis(ethoxycarbonyldecylene)fullerene, have been investigated. The molecular aggregation at the air_water interface was reduced and the transfer behavior to various substrates was enhanced as compared with those of pure C 60. Structural characterization of the LB films was carried out using high resolution transmission electron microscopy (HRTEM). The HRTEM images revealed regular stacking of the densest packed rows of molecules in the LB films.

关键词： fullerene Langmuir_Blodgett films TEM images ECDF BECDF.

Thermoelectric properties of metal-(Z)-1,2-dihydroselenoethene-1,2-dithiol coordination polymers

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Science Bulletin 2018年第13期63卷 814-816页

作者： Yutao Cui Jie Yan Yue Sun Ye Zou Yimeng Sun Wei Xu daoben zhu 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

Thermoelectric(TE)materials can realize mutual energy conversion between heat and electricity and are applied broadly in energy harvesting,local cooling or heating,and thermal sensing[1].TE devices are crucial to solve the global energy crisis with renewable energy resources.Currently,most of the research works are focused on inorganic TE materials because of their superior performance.Very recently,due to the growing demands

关键词：热电聚合物性质金属协作设备供应精力材料

Special Topic on Molecular Functional Materials and Applications

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Science China Chemistry 2016年第6期59卷 651-652页

作者： daoben zhu Deqing Zhang Yunqi Liu Institute of Chemistry Chinese Academy of Sciences

Molecular functional materials have received increasing attentions in recent years because of their promising applications in various areas.Chinese scientists have made important contributions to the development of this area.In order to further promote research activities of this area in China and strengthen academic exchanges and collaborations,the Committee of Organic Solids of Chinese Chemical Society(CCS)organized the 10th National Symposium on Electronic Process in Organic Solids during August7–10,2015 at Peking University.

关键词：功能材料应用分子中国科学家专题有机固体中国化学会学术交流

Monolayer organic field-effect transistors

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Science China Chemistry 2019年第3期62卷 313-330页

作者： Jie Liu Lang Jiang Wenping Hu Yunqi Liu daoben zhu Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry School of Science

Monolayer organic field-effect transistors(OFETs) are attracting worldwide interest in device physics and novel applications due to their ultrathin active layer for two-dimensional charge transport. The monolayer films are generally prepared by thermal evaporation, the Langmuir technique or self-assembly process, etc., but their electrical performance is relatively lower than corresponding thick films. From 2011, the performance of monolayer OFETs has been boosted by using the monolayer molecular crystals(MMCs) as active channels, which opened up a new era for monolayer OFETs. In this review, recent progress of monolayer OFETs, including the preparation of monolayer films, their OFET performance and applications are summarized.Finally, perspectives of monolayer OFETs in the near future are also discussed.

关键词： monolayer films organic field-effect transistors monolayer molecular crystals(MMCs) mobility

A high mobility air-stable n-type organic small molecule semiconductor with high UV-visible-to-NIR photoresponse

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Light(Science & Applications) 2022年第9期11卷 2140-2146页

作者： YING-SHI GUAN JING QIAO YINGYING LIANG HARI KRISHNA BISOYI CHAO WANG WEI XU daoben zhu QUAN LI Institute of Advanced Materials and School of Chemistry and Chemical Engineering Southeast University211189 NanjingChina Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of ChemistryChinese Academy of Sciences100190 BeijingChina Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program Kent State UniversityKentOH 44242USA

An organic semiconductor with high carrier mobility and efficient light absorption over a wide spectral range is of the most important yet challenging material for constructing a broadband responsive organic photodetector.However,the development of such organic semiconductors,especially for air-stable n-type organic small molecule semiconductors,is still at an early stage.Here we report the fabrication of high-performance n-type semiconducting crystalline nanosheets and the development of air-stable field-effect transistors,phototransistors,with high response over a broad spectrum.The n-type small molecule semiconductor is assembled into a crystalline nanosheet based on the solvent-phase interfacial self-assembly method.N-type field-effect transistors with high electron mobility are fabricated and their electrical performances exhibit excellent air stability.Impressively,the demonstrated phototransistors exhibit an ultrahigh responsivity over a wide spectral range from 365 to 940 nm,with a maximum photoresponsivity of 9.2×10^(5) AW-1 and specific detectivity of 5.26×10^(13) Jones,which is the best performance among the reported n-type organic small molecule-based phototransistors.

关键词： high visible crystalline

Electronic structure engineering in organic thermoelectric materials

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Journal of Energy Chemistry 2021年第11期30卷 204-219,I0005页

作者： Xiaojuan Dai Qing Meng Fengjiao Zhang Ye Zou Chong-an Di daoben zhu Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Electronic structures, which play a key role in determining electrical and optical properties of π-conjugated organic materials, have attracted tremendous interest. Efficient thermoelectric (TE) conversion of organic materials has rigorous requirements on electronic structures. Recently, the rational design and precise modulation of electronic structures have exhibited great potential in exploring state-of-the-art organic TE materials. This review focuses on the regulation of electronic structures of organic materials toward efficient TE conversion. First, we present the basic knowledge regarding electronic structures and the requirements for efficient TE conversion of organic materials, followed by a brief introduction of commonly used methods for electronic structure characterization. Next, we highlight the key strategies of electronic structure engineering for high-performance organic TE materials. Finally, an overview of the electronic structure engineering of organic TE materials, along with current challenges and future research directions, are provided.

关键词： Organic thermoelectric materials Electronic structure Organic semiconductors