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arXiv 2017年

作者： Chang, Kai-Wei Chen, Peng-Jen Department of Physics National Taiwan University Taipei10617 Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei11529 Taiwan National Taiwan University Taipei10617 Taiwan Institute of Physics Academia Sinica Taipei11529 Taiwan

Z2 topology if they respect some specfic symmetry. Since the theoretical proposal, however, no materials have been found to host the antiferromagnetic topological (AFT) phase to date. Here, for the first time, we demonstrate that the topological Kondo insulator SmB6 can be an AFT system when pressurized to undergo an antiferromagnetic phase transition. In addition to propose the possible candidate for an AFT material, in this work we also illustrate the anomalous topological surface states of the AFT phase which has not been discussed before. Originating from the interplay between the topological properties and the antiferromagnetic surface magnetization, the topological surface states of the AFT phase behave differently as compared with those of a topological insulator. Besides, the AFT insulators are also found promising in the generation of tunable spin currents, which is an important application in spintronics. Copyright © 2017, The Authors. All rights reserved.

关键词： Antiferromagnetism

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Carbon nanodots prepared from dopamine and trisodium citrate as an effective fluorescent sensing platform for the label-free detection of ferric ions 20

Carbon nanodots prepared from dopamine and trisodium citrate...

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20th International Conference on Miniaturized Systems for Chemistry and Life sciences, MicroTAS 2016

作者： Wu, W.C. Lin, S.C. Chen, F.R. Chang, H.T. Tseng, F.G. Department of Engineering and System Science National Tsing Hua University Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taiwan Department of Chemistry National Taiwan University Taiwan

ISBN: (纸本)9780979806490

In this study, dopamine passivated carbon nanodots (C-dots) were fabricated to detect ferric ions (Fe3+) sensitivity and selectivity. Photoluminescence (PL) intensity of C-dots was turned on after adding phenyl boric acid. Depending on the interesting PL property, we investigated a novel strategy for Fe3+detection. Comparing to the previous papers used complicated and tedious process to fabricate nanomaterial-based probes for Fe3+ sensing, the one-pot hydrothermal method spend only 2 h to prepare C-dots from dopamine and trisodium citrate. The limit of detection (LOD) is 5.8 nM, which is lower than these papers.

关键词： Photoluminescence

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Designing a Perylene Diimide/Fullerene Hybrid as Effective Electron Transporting Material in Inverted Perovskite Solar Cells with Enhanced Efficiency and Stability

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Angewandte Chemie 2019年第25期131卷

作者： Zhenghui Luo Fei Wu Teng Zhang Xuan Zeng Yiqun Xiao Tao Liu Cheng Zhong Xinhui Lu Linna Zhu Shihe Yang Chuluo Yang Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of Chemistry Wuhan University Wuhan 430072 P. R. China Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and Engineering Shenzhen University Shenzhen 518060 P. R. China Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy Faculty of Materials & Energy Southwest University Chongqing 400715 P. R. China Nano Science and Technology Program Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong P. R. China Department of Physics Chinese University of Hong Kong New Territories Hong Kong P. R. China Guangdong Key Lab of Nano-Micro Material Research School of Chemical Biology and Biotechnology Shenzhen Graduate School Peking University Xili University Town Shenzhen 518055 Guangdong P. R.China

Electron transport materials (ETM) play an important role in the improvement of efficiency and stability for inverted perovskite solar cells (PSCs). This work reports an efficient ETM, named PDI‐C 60 , by the combination of perylene diimide (PDI) and fullerene. Compared to the traditional PCBM, this strategy endows PDI‐C 60 with slightly shallower energy level and higher electron mobility. As a result, the device based on PDI‐C 60 as electron transport layer (ETL) achieves high power conversion efficiency (PCE) of 18.6 %, which is significantly higher than those of the control devices of PCBM (16.6 %) and PDI (13.8 %). The high PCE of the PDI‐C 60 ‐based device can be attributed to the more matching energy level with the perovskite, more efficient charge extraction, transport, and reduced recombination rate. To the best of our knowledge, the PCE of 18.6 % is the highest value in the PSCs using PDI derivatives as ETLs. Moreover, the device with PDI‐C 60 as ETL exhibits better device stability due to the stronger hydrophobic properties of PDI‐C 60 . The strategy using the PDI/fullerene hybrid provides insights for future molecular design of the efficient ETM for the inverted PSCs.

关键词： Elektronentransportmaterial Fullerene Perowskit-Solarzellen Perylendiimide Stromwandlungswirkungsgrad

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Photovoltaic Devices: High Performance Roll‐to‐Roll Produced Fullerene‐Free Organic Photovoltaic Devices via Temperature‐Controlled Slot Die Coating (Adv. Funct. Mater. 6/2019)

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Advanced Functional Materials 2019年第6期29卷

作者： Seok‐In Na You‐Hyun Seo Yoon‐Chae Nah Seok‐Soon Kim Hyojung Heo Jueng‐Eun Kim Nicholas Rolston Reinhold H. Dauskardt Mei Gao Youngu Lee Doojin Vak CSIRO Manufacturing Bag 10 Clayton South Victoria 3168 Australia Professional Graduate School of Flexible and Printable Electronics and Polymer Materials Fusion Research Center Chonbuk National University Deokjin‐dong 664‐14 Jeonju‐si Jeollabuk‐do 561‐756 Republic of Korea Interdisciplinary Program in Creative Engineering School of Energy Materials and Chemical Engineering Korea University of Technology and Education Cheonan 31253 Korea Department of Nano & Chemical Engineering Kunsan National University 290–2 Miryong‐dong Gunsan‐si Jeollabuk‐do 573‐701 Republic of Korea Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu 42988 Korea Department of Applied Physics Stanford University Stanford CA 94305 USA Department of Materials Science and Engineering Stanford University Stanford CA 94305 USA

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Supercapacitors: Carbon-nanosheet Based Large-Area Electrochemical Capacitor that is Flexible, Foldable, Twistable, and Stretchable (Small 43/2018)

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Small 2018年第43期14卷

作者： Jong Han Jun Hyeonjun Song Changsoon Kim In-Suk Choi Youngjin Jeong Ji-Hoon Lee Department of Information Communication Materials and Chemistry Convergence Technology Soongsil University Seoul 06978 Republic of Korea Program in Nano Science and Technology Graduate School of Convergence Science and Technology Seoul National University Seoul 08826 Republic of Korea Advanced Institutes of Convergence Technology Suwon Gyeonggi 16229 Republic of Korea Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of Korea Department of Organic Materials and Fiber Engineering Soongsil University Seoul 06978 Republic of Korea Advanced Functional Thin Films Department Surface Technology Division Korea Institute of Materials Science (KIMS) Changwon Gyeongnam 51508 Republic of Korea

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Artificial Photosynthesis: Ni-nanocluster Modified Black TiO2with Dual Active Sites for Selective Photocatalytic CO2Reduction (Small 2/2018)

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Small 2018年第2期14卷

作者： Tadesse Billo Fang-Yu Fu Putikam Raghunath Indrajit Shown Wei-Fu Chen Hsiang-Ting Lien Tzu-Hsien Shen Jyh-Fu Lee Ting-Shan Chan Kuo-You Huang Chih-I Wu M. C. Lin Jih-Shang Hwang Chih-Hao Lee Li-Chyong Chen Kuei-Hsien Chen Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 115 Taiwan Department of Engineering and System Science National Tsing Hua University Hsinchu 30013 Taiwan Institute of Atomic and Molecular Sciences Academia Sinica Taipei 10617 Taiwan Center for Condensed Matter Sciences National Taiwan University Taipei 10617 Taiwan Institute of Optoelectronic Science National Taiwan Ocean University Keelung 202 Taiwan Center for Interdisciplinary Molecular Science Department of Applied Chemistry National Chiao Tung University Hsinchu 300 Taiwan National Synchrotron Radiation Research Center Hsinchu 30076 Taiwan Graduate Institute of Electro-Optical Engineering National Taiwan University Taipei 10617 Taiwan

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POLYELECTROLYTE-GATED VERTICAL SCHOTTKY-BARRIER TRANSISTORS

POLYELECTROLYTE-GATED VERTICAL SCHOTTKY-BARRIER TRANSISTORS

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第七届高分子化学国际学术研讨会

作者： Jeong Ho Cho Youn Sang Kim SKKU Advanced Institute of Nanotechnology (SAINT) 2School of Chemical EngineeringSungkyunkwan University Program in Nano Science and Technology Graduate School of Convergence Science and TechnologySeoul National University

We demonstrate a new device architecture for flexible vertical Schottky barrier(SB)transistors and logic gates based on graphene–organic semiconductor–metal heterostructures and ion gel gate *** vertical SB transistor structure was formed by(i)vertically sandwiching a benchmark p-type pentacene or n-type N,N’-dioctyl-3,4,9,10-perylenedicarboximide(PTCDI-C8)organic semiconductor

关键词： POLYELECTROLYTE-GATED VERTICAL SCHOTTKY-BARRIER TRANSISTORS

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Ab initio study of the PbTaSe2-related superconducting topological metals

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Physical Review B 2016年第16期94卷 165148-165148页

作者： Peng-Jen Chen Tay-Rong Chang Horng-Tay Jeng Department of Physics National Taiwan University Taipei 10617 Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan and National Taiwan University Taipei 10617 Taiwan Institute of Physics Academia Sinica Taipei 11529 Taiwan Department of Physics National Tsing Hua University Hsinchu 30013 Taiwan

Recent reports have demonstrated the Z2 topological property of the superconductor PbTaSe2 (Tc∼3.8 K). PbTaSe2 simultaneously exhibits superconductivity and nontrivial Z2 topology without the need for doping or proximity effect. Scanning tunneling microscopy confirms that the topological surface states are gapped by superconductivity, indicating the likelihood of the chiral px+ipy pairing mechanism. Motivated by these exciting findings, we predict by means of the first-principles scheme that ABSe2 (A=Pb or Sn and B=Ta or Nb) is also a superconductor with nontrivial Z2 topology. Among these, SnNbSe2 shows the highest Tc∼7.0 K. Due to the fact that the required energy resolution to detect the Majorana bound states is of the order of Δ2/ɛF, the predicted higher Tc of ABSe2 may help mitigate some experimental challenges and provides a better platform for the exploration of the topological superconductivity.

关键词： First-principles calculations Superconductors Topological materials Density functional calculations

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Site-Specifically modified recombinant human granulocyte colony-stimulating factor with polyethylene glycol

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Biotechnology 2015年第4期14卷 200-205页

作者： Park, See-Hyoung Program in Nano Science and Technology Department of Transdisciplinary Studies Graduate School of Convergence Science and Technology Seoul National University Suwon443-270 Korea Republic of

To prepare PEGylated recombinant human granulocyte colony-stimulating factor (rHuG-CSF) with enhanced pharmacokinetic properties we prepared a cysteine-substituted mutant of rHuG-CSF (mrHuG-CSF). For site-specific PEGylation of mrHuG-CSF Threonine 134 residue that is one of the glycosylation sites and thought not to be critical in structure and function of rHuG-CSF was substituted by Cysteine. Also, Cysteine 17 residue at N-terminus that does not make di-sulfide bonds and is partially buried was substituted by Serine. This mrHuG-CSF was then site-specifically conjugated with 5 or 20 kDa of polyethylene glycol-maleimide and the correct molecular weight of the conjugates was confirmed by MALDI-TOF mass spectrometry analysis. Compared with unmodified rHuG-CSF, both PEGylated mrHuG-CSF showed similar biological activities in vitro and the plasma half-life of the 20 kDa PEGylated mrHuG-CSF was about 5-folds increased. Taken together, site-specific PEGylation of mrHuG-CSF may increase their therapeutic potency in humans. © 2015 Asian Network for Scientific Information.

关键词： Pharmacokinetics

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Large-Scale purification of human apolipoprotein kringle domain V (rhualkv) expressed in pichia pastoris

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Biotechnology 2015年第4期14卷 206-210页

Human apolipoprotein kringle domain V (rHualkV) that has an anti-angiogenic activity was expressed and purified in large scale from Pichia pastoris. rHualkV was captured by SP-Streamline resin directly from 40 L culture broth through batch type adsorption with about 80% yield (n = 8). Captured rHualkV was further purified by SP-Sepharose column chromatography and concentrated by membrane filtration. On average 5 g of rHualkV was purified per batch with the 56% final yield. The result of analytical High-Performance Liquid Chromatography (HPLC) of the purified rHualkV showed the single peak. ESI mass-spectrometry analysis of the rHualkV has proved that the purified rHualkV has the 9676 kDa that is the correct molecular weight as the one calculated by amino acid sequence. In addition, rHualkV has the same N and C-terminal residue as the expected one from DNA sequence of rHualkV gene in Pichia pastoris. Thus, through three steps of process, the anti-angiogenic rHualkV was successfully expressed and purified from Pichia pastoris, which will be able to provide a basis for much larger expression and purification for production needed for clinical evaluation later. © 2015 Asian Network for Scientific Information.

关键词： Purification

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