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1p3/2 Proton-Hole state in Sn132 and the Shell Structure Along N=82

Physical Review Letters 2014年第13期112卷 132501-132501页

作者： J. Taprogge A. Jungclaus H. Grawe S. Nishimura P. Doornenbal G. Lorusso G. S. Simpson P.-A. Söderström T. Sumikama Z. Y. Xu H. Baba F. Browne N. Fukuda R. Gernhäuser G. Gey N. Inabe T. Isobe H. S. Jung D. Kameda G. D. Kim Y.-K. Kim I. Kojouharov T. Kubo N. Kurz Y. K. Kwon Z. Li H. Sakurai H. Schaffner K. Steiger H. Suzuki H. Takeda Zs. Vajta H. Watanabe J. Wu A. Yagi K. Yoshinaga G. Benzoni S. Bönig K. Y. Chae L. Coraggio A. Covello J.-M. Daugas F. Drouet A. Gadea A. Gargano S. Ilieva F. G. Kondev T. Kröll G. J. Lane A. Montaner-Pizá K. Moschner D. Mücher F. Naqvi M. Niikura H. Nishibata A. Odahara R. Orlandi Z. Patel Zs. Podolyák A. Wendt Instituto de Estructura de la Materia CSIC E-28006 Madrid Spain Departamento de Física Teórica Universidad Autónoma de Madrid E-28049 Madrid Spain RIKEN Nishina Center RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan GSI Helmholtzzentrum für Schwerionenforschung GmbH 64291 Darmstadt Germany LPSC Université Joseph Fourier Grenoble 1 CNRS/IN2P3 Institut National Polytechnique de Grenoble F-38026 Grenoble Cedex France Department of Physics Tohoku University Aoba Sendai Miyagi 980-8578 Japan Department of Physics University of Tokyo Hongo 7-3-1 Bunkyo-ku 113-0033 Tokyo Japan School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4JG United Kingdom Physik Department E12 Technische Universität München D-85748 Garching Germany Institut Laue-Langevin B.P. 156 F-38042 Grenoble Cedex 9 France Department of Physics Chung-Ang University Seoul 156-756 Republic of Korea Rare Isotope Science Project Institute for Basic Science Daejeon 305-811 Republic of Korea Department of Nuclear Engineering Hanyang University Seoul 133-791 Republic of Korea School of Physics and State key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China MTA Atomki P.O. Box 51 Debrecen H-4001 Hungary Department of Physics Osaka University Machikaneyama-machi 1-1 Osaka 560-0043 Toyonaka Japan Department of Physics Faculty of Science and Technology Tokyo University of Science 2641 Yamazaki Noda Chiba Japan INFN Sezione di Milano via Celoria 16 I-20133 Milano Italy Institut für Kernphysik Technische Universität Darmstadt D-64289 Darmstadt Germany Department of Physics Sungkyunkwan University Suwon 440-746 Republic of Korea Istituto Nazionale di Fisica Nucleare Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy Dipartimento di Fisica Università di Napoli Federico II Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy CEA DAM DIF 91297 Arpajon cedex France Instituto de Fsica Corpuscular CSIC

A low-lying state in In82131, the one-proton hole nucleus with respect to double magic Sn132, was observed by its γ decay to the Iπ=1/2− β-emitting isomer. We identify the new state at an excitation energy of Ex=1353 keV, which was populated both in the β decay of Cd13183 and after β-delayed neutron emission from Cd13284, as the previously unknown πp3/2 single-hole state with respect to the Sn132 core. Exploiting this crucial new experimental information, shell-model calculations were performed to study the structure of experimentally inaccessible N=82 isotones below Sn132. The results evidence a surprising absence of proton subshell closures along the chain of N=82 isotones. The consequences of this finding for the evolution of the N=82 shell gap along the r-process path are discussed.

关键词： PROTONS PROTON decay EXCITATION energy (In situ microanalysis) NEUTRON emission PARTICLE decays

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Structure Switching and Modulation of the Magnetic Properties in Diarylethene‐Bridged Metallosupramolecular Compounds by Controlled Coordination‐Driven Self‐Assembly

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Angewandte Chemie 2019年第13期131卷

作者： Zhao‐Yang Li Jing‐Wei Dai Marko Damjanović Takuya Shiga Jin‐Hua Wang Jia Zhao Hiroki Oshio Masahiro Yamashita Xian‐He Bu School of Materials Science and Engineering Nankai University 38 Tongyan Road Haihe Educational Park Tianjin 300350 P. R. China State Key Laboratory of Medicinal Chemical Biology Nankai University 94 Weijin Road Tianjin 300071 P. R. China Institute of Nanotechnology (INT) Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany Department of Chemistry Graduate School of Pure and Applied Sciences University of Tsukuba Tennnodai 1-1-1 Tsukuba 305-8571 Japan Department of Chemistry Graduate School of Science Tohoku University 6-3 Aramaki-Aza-Aoba Aoba-ku Sendai 980-8578 Japan WPI Research Center Advanced Institute for Materials Research Tohoku University Sendai 980-8577 Japan State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 P. R. China

We report three self‐assembled iron complexes that comprised an anti‐parallel open form (o‐ L anti ), a parallel open form ( o ‐ L syn ), and a closed form (c‐ L ) of diarylethene conformers. Under kinetic control, Fe II 2 (o‐ L anti ) 3 was isolated, which exhibited a dinuclear structure with diamagnetic properties. Under light‐irradiation control, Fe II 2 (c‐ L ) 3 was prepared and exhibited paramagnetism and spin‐crossover behaviour. Under thermodynamic control and in the presence of indispensable [Fe III (Tp*)(CN) 3 ] − , Fe II 2 (o‐ L anti ) 3 and Fe II 2 (c‐ L ) 3 transformed into tetranuclear Fe III 2 Fe II 2 (o‐ L syn ) 2 , which exhibited complete spin‐crossover behaviour at T 1/2 =353 K.

关键词： Eisenkomplexe Photochromie Selbstorganisation Spin-Crossover Supramolekulare Chemie

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Taming Chiral Quaternary Stereocenters via Remote H-Bonding Stereoinduction in Palladium-Catalyzed (3+2) Cycloadditions

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Angewandte Chemie 2022年第3期135卷

作者： Yu-Qing Xiao Dr. Miao-Miao Li Zheng-Xin Zhou Yu-Jie Li Meng-Yue Cao Xiao-Peng Liu Prof. Hai-Hua Lu Dr. Li Rao Prof. Liang-Qiu Lu Prof. André M. Beauchemin Prof. Wen-Jing Xiao CCNU-uOttawa Joint Research Centre Key Laboratory of Pesticide & Chemical Biology Ministry of Education College of Chemistry Central China Normal University 152 Luoyu Road Wuhan Hubei 430079 China Division of Molecular Catalysis & Synthesis Henan Institute of Advanced Technology Zhengzhou University Zhengzhou 450001 China School of Science Westlake University Hangzhou 310024 China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 P. R. China School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 China Department of Chemistry and Biomolecular Sciences University of Ottawa Ottawa Ontario K1N6N5 Canada

Ring-opening transformations of donor-acceptor (D-A) cyclopropanes enable the rapid assembly of complex molecules. However, the enantioselective formation of chiral quaternary stereocenters using substrates bearing two different acceptors remains a challenge. Herein, we describe the first palladium-catalyzed highly diastereo- and enantioselective (3+2) cycloaddition of vinyl cyclopropanes bearing two different electron-withdrawing groups, a subset of D-A cyclopropanes. The key to the success of this reaction is the remote stereoinduction through hydrogen bond from chiral ligands, which thereby addressed the aforementioned challenge. A variety of chiral five-membered heterocycles were produced in good yields and with high stereoselectivity (up to 99 % yields, 99 : 1 er and >19 : 1 dr). In-depth mechanistic investigations, including control experiments and theoretical calculations, revealed the origin of the stereoselectivity and the importance of H-bonding in stereocontrol.

关键词： Asymmetric Cycloaddition D-A Cyclopropane H-Bonding Palladium Catalysis Quaternary Stereocenters

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Graphene: Large‐Area Si‐Doped Graphene: Controllable Synthesis and Enhanced Molecular Sensing (Adv. Mater. 45/2014)

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advanced Materials 2014年第45期26卷

作者： Ruitao Lv Maria Cristina dos Santos Claire Antonelli Simin Feng Kazunori Fujisawa Ayse Berkdemir Rodolfo Cruz‐Silva Ana Laura Elías Nestor Perea‐Lopez Florentino López‐Urías Humberto Terrones Mauricio Terrones Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 China Instituto de Física Universidade de São Paulo 05508‐090 São Paulo SP Brazil Department of Materials Science & Engineering Universidad Carlos III de Madrid Madrid Spain Department of Physics and Center for 2‐Dimensional and Layered Materials The Pennsylvania State University University Park PA 16802 USA Institute of Carbon Science and Technology Shinshu University Wakasato 4–17–1 Nagano 380‐853 Japan Advanced Materials Department IPICYT Camino a la Presa San José 2055 Col. Lomas 4a sección San Luis Potosí S.L.P. 78216 México Department of Physics Advanced Physics and Astronomy Rensselaer Polytechnic Institute 100 Eighth Street Troy NY 12180 USA Department of Chemistry Department of Materials Science and Engineering The Pennsylvania State University University Park PA 16802 USA

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Three-dimensionally ordered macroporous materials for photo/electrocatalytic sustainable energy conversion, solar cell and energy storage

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EnergyChem 2022年第4期4卷

作者： Yang Ding Chunhua Wang Runtian Zheng Soumyajit Maitra Genwei Zhang Tarek Barakat Subhasis Roy Bao-Lian Su Li-Hua Chen Laboratory of Inorganic Materials Chemistry (CMI) University of Namur 61 rue de Bruxelles B-5000 Namur Belgium Namur Institute of Structured Matter (NISM) University of Namur 61 rue de Bruxelles B-5000 Namur Belgium Department of Chemistry KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium Department of Chemical Engineering University of Calcutta 92 APC Road Kolkata West Bengal 700009 India Department of Chemistry Fudan University 2005 Songhu Road 200438 Shanghai China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road 430070 Wuhan Hubei China Clare Hall University of Cambridge Cambridge CB2 1EW UK

Three-dimensionally ordered macroporous (3DOM) materials have aroused tremendous interest in solar light to energy conversion, sustainable and renewable products generation, and energy storage fields owing to their convenient mass transfer channels, high surface area, enhanced interaction between matter and light, plentiful reactive sites as well as tunable composition. In this review, the state-of-the-art 3DOM materials as well as their preparation methods and the relevant applications including photo/electrocatalytic sustainable energy conversion, solar cells, Li ion batteries and supercapacitor are thoroughly outlined. Meanwhile, the unique merits and mechanisms for 3DOM materials in various applications are revealed and discussed in depth. Moreover, the strategies for designing 3DOM materials and the enhanced performance for applications are correlated, which can be significantly valuable to help readers to promptly acquire the comprehensive knowledge and to inspire some new ideas in developing 3DOM materials for further improved performances. Finally, the challenges and perspectives of 3DOM materials for sustainable energy conversion/production, solar cells and energy storage fields are outlooked. We sincerely look forward to that this critical review can facilitate the fast developments in designing highly efficient 3DOM materials and the relevant applications.

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β decay of semi-magic Cd130: Revision and extension of the level scheme of In130

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Physical Review C 2016年第2期94卷 024303-024303页

作者： A. Jungclaus H. Grawe S. Nishimura P. Doornenbal G. Lorusso G. S. Simpson P.-A. Söderström T. Sumikama J. Taprogge Z. Y. Xu H. Baba F. Browne N. Fukuda R. Gernhäuser G. Gey N. Inabe T. Isobe H. S. Jung D. Kameda G. D. Kim Y.-K. Kim I. Kojouharov T. Kubo N. Kurz Y. K. Kwon Z. Li H. Sakurai H. Schaffner Y. Shimizu K. Steiger H. Suzuki H. Takeda Zs. Vajta H. Watanabe J. Wu A. Yagi K. Yoshinaga G. Benzoni S. Bönig K. Y. Chae L. Coraggio J.-M. Daugas F. Drouet A. Gadea A. Gargano S. Ilieva N. Itaco F. G. Kondev T. Kröll G. J. Lane A. Montaner-Pizá K. Moschner D. Mücher F. Naqvi M. Niikura H. Nishibata A. Odahara R. Orlandi Z. Patel Zs. Podolyák A. Wendt Instituto de Estructura de la Materia CSIC E-28006 Madrid Spain GSI Helmholtzzentrum für Schwerionenforschung GmbH 64291 Darmstadt Germany RIKEN Nishina Center RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan National Physical Laboratory NPL Teddington Middlesex TW11 0LW United Kingdom Department of Physics University of Surrey Guildford GU2 7XH United Kingdom LPSC Université Joseph Fourier Grenoble 1 CNRS/IN2P3 Institut National Polytechnique de Grenoble F-38026 Grenoble Cedex France Department of Physics Tohoku University Aoba Sendai Miyagi 980-8578 Japan Departamento de Física Teórica Universidad Autónoma de Madrid E-28049 Madrid Spain Department of Physics University of Tokyo Hongo 7-3-1 Bunkyo-ku 113-0033 Tokyo Japan School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ United Kingdom Physik Department E12 Technische Universität München D-85748 Garching Germany Institut Laue-Langevin B.P. 156 F-38042 Grenoble Cedex 9 France Department of Physics Chung-Ang University Seoul 156-756 Republic of Korea Rare Isotope Science Project Institute for Basic Science Daejeon 305-811 Republic of Korea Department of Nuclear Engineering Hanyang University Seoul 133-791 Republic of Korea School of Physics and State key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China MTA Atomki P.O. Box 51 Debrecen H-4001 Hungary Department of Physics Osaka University Machikaneyama-machi 1-1 Osaka 560-0043 Toyonaka Japan Department of Physics Faculty of Science and Technology Tokyo University of Science 2641 Yamazaki Noda Chiba Japan INFN Sezione di Milano via Celoria 16 I-20133 Milano Italy Institut für Kernphysik Technische Universität Darmstadt D-64289 Darmstadt Germany Department of Physics Sungkyunkwan University Suwon 440-746 Republic of Korea Istituto Nazionale di Fisica Nucleare Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy CEA DAM DIF 91297 Arpajon cedex France

The β decay of the semi-magic nucleus Cd130 has been studied at the RIBF facility at the RIKEN Nishina Center. The high statistics of the present experiment allowed for a revision of the established level scheme of In130 and the observation of additional β feeding to high-lying core-excited states in In130. The experimental results are compared to shell-model calculations employing a model space consisting of the full major N=50–82 neutron and Z=28–50 proton shells and the NA-14 interaction, and good agreement is found.

关键词： Beta decay electromagnetic transitions Energy levels & level densities Nuclear structure & decays Shell model 90 ≤ A ≤ 149

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β decay of Cd129 and excited states in In129

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Physical Review C 2015年第5期91卷 054324-054324页

作者： J. Taprogge A. Jungclaus H. Grawe S. Nishimura P. Doornenbal G. Lorusso G. S. Simpson P.-A. Söderström T. Sumikama Z. Y. Xu H. Baba F. Browne N. Fukuda R. Gernhäuser G. Gey N. Inabe T. Isobe H. S. Jung D. Kameda G. D. Kim Y.-K. Kim I. Kojouharov T. Kubo N. Kurz Y. K. Kwon Z. Li H. Sakurai H. Schaffner K. Steiger H. Suzuki H. Takeda Zs. Vajta H. Watanabe J. Wu A. Yagi K. Yoshinaga G. Benzoni S. Bönig K. Y. Chae L. Coraggio A. Covello J.-M. Daugas F. Drouet A. Gadea A. Gargano S. Ilieva F. G. Kondev T. Kröll G. J. Lane A. Montaner-Pizá K. Moschner D. Mücher F. Naqvi M. Niikura H. Nishibata A. Odahara R. Orlandi Z. Patel Zs. Podolyák A. Wendt Instituto de Estructura de la Materia CSIC E-28006 Madrid Spain Departamento de Física Teórica Universidad Autónoma de Madrid E-28049 Madrid Spain RIKEN Nishina Center RIKEN 2-1 Hirosawa Wako-shi Saitama 351-0198 Japan GSI Helmholtzzentrum für Schwerionenforschung GmbH 64291 Darmstadt Germany National Physical Laboratory NPL Teddington Middlesex TW11 0LW United Kingdom Department of Physics University of Surrey Guildford GU2 7XH United Kingdom LPSC Université Joseph Fourier Grenoble 1 CNRS/IN2P3 Institut National Polytechnique de Grenoble F-38026 Grenoble Cedex France Department of Physics Tohoku University Aoba Sendai Miyagi 980-8578 Japan Department of Physics University of Tokyo Hongo 7-3-1 Bunkyo-ku 113-0033 Tokyo Japan School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4JG United Kingdom Physik Department E12 Technische Universität München D-85748 Garching Germany Institut Laue-Langevin B.P. 156 F-38042 Grenoble Cedex 9 France Department of Physics Chung-Ang University Seoul 156-756 Republic of Korea Rare Isotope Science Project Institute for Basic Science Daejeon 305-811 Republic of Korea Department of Nuclear Engineering Hanyang University Seoul 133-791 Republic of Korea School of Physics and State key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China MTA Atomki P.O. Box 51 Debrecen H-4001 Hungary Department of Physics Osaka University Machikaneyama-machi 1-1 Osaka 560-0043 Toyonaka Japan Department of Physics Faculty of Science and Technology Tokyo University of Science 2641 Yamazaki Noda Chiba Japan INFN Sezione di Milano via Celoria 16 I-20133 Milano Italy Institut für Kernphysik Technische Universität Darmstadt D-64289 Darmstadt Germany Department of Physics Sungkyunkwan University Suwon 440-746 Republic of Korea Istituto Nazionale di Fisica Nucleare Complesso Universitario di Monte S. Angelo I-80126 Napoli Italy Dipartimento di Fisica Università di Napo

The β decay of Cd129, produced in the relativistic fission of a U238 beam, was experimentally studied at the RIBF facility at the RIKEN Nishina Center. From the γ radiation emitted after the β decays, a level scheme of In129 was established comprising 31 excited states and 69 γ-ray transitions. The experimentally determined level energies are compared to state-of-the-art shell-model calculations. The half-lives of the two β-decaying states in Cd129 were deduced and the β feeding to excited states in In129 were analyzed. It is found that, as in most cases in the Z<50, N≤82 region, both decays are dominated by the ν0g7/2→π0g9/2 Gamow–Teller transition, although the contribution of first-forbidden transitions cannot be neglected.

关键词： CADMIUM isotopes INDIUM isotopes PARTICLE decays EXCITED states NUCLEAR fusion

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Strategies to Enhance the Photosensitization: Polymerization and the Donor–Acceptor Even–Odd Effect

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Angewandte Chemie 2018年第46期130卷

作者： Shunjie Liu Haoke Zhang Yuanyuan Li Junkai Liu Lili Du Ming Chen Ryan T. K. Kwok Jacky W. Y. Lam David Lee Phillips Ben Zhong Tang Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and econstruction Institute for Advanced Studgy and Department of Chemical and Biological Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China HKUST-Shenzhen Research Institute No.9 Yuexing 1st RD South Area Hi-tech Park Nanshan Shenzhen 518057 China Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China Institute of Life Sciences Jiangsu University Zhenjiang 212013 China Center for Aggregation-Induced Emission SCUT-HKUST Joint Research Institute State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China

A particular challenge in the design of organic photosensitizers (PSs) with donor–acceptor (D‐A) structures is that it is based on trial and error rather than specific rules. Now these challenges are addressed by proposing two efficient strategies to enhance the photosensitization efficiency: polymerization‐facilitated photosensitization and the D‐A even–odd effect. Conjugated polymers have been found to exhibit a higher 1 O 2 generation efficiency than their small molecular counterparts. Furthermore, PSs with A‐D‐A structures show enhanced photosensitization efficiency over those with D‐A‐D structures. Theoretical calculations suggest an enhanced intersystem crossing (ISC) efficiency by these strategies. Both in vitro and in vivo experiments demonstrate that the resulting materials can be used as photosensitizers in image‐guided photodynamic anticancer therapy. These guidelines are applicable to other polymers and small molecules to lead to the development of new PSs.

关键词： Aggregationsinduzierte Emission Gerade-ungerade-Effekt Fluoreszenz Photodynamische Therapie Polymerisationen

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Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of Zr110

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Physical Review Letters 2017年第3期118卷 032501-032501页

作者： N. Paul A. Corsi A. Obertelli P. Doornenbal G. Authelet H. Baba B. Bally M. Bender D. Calvet F. Château S. Chen J.-P. Delaroche A. Delbart J.-M. Gheller A. Giganon A. Gillibert M. Girod P.-H. Heenen V. Lapoux J. Libert T. Motobayashi M. Niikura T. Otsuka T. R. Rodríguez J.-Y. Roussé H. Sakurai C. Santamaria N. Shimizu D. Steppenbeck R. Taniuchi T. Togashi Y. Tsunoda T. Uesaka T. Ando T. Arici A. Blazhev F. Browne A. M. Bruce R. Carroll L. X. Chung M. L. Cortés M. Dewald B. Ding F. Flavigny S. Franchoo M. Górska A. Gottardo A. Jungclaus J. Lee M. Lettmann B. D. Linh J. Liu Z. Liu C. Lizarazo S. Momiyama K. Moschner S. Nagamine N. Nakatsuka C. Nita C. R. Nobs L. Olivier Z. Patel Zs. Podolyák M. Rudigier T. Saito C. Shand P.-A. Söderström I. Stefan R. Orlandi V. Vaquero V. Werner K. Wimmer Z. Xu IRFU CEA Université Paris-Saclay F-91191 Gif-sur-Yvette France RIKEN Nishina Center 2-1 Hirosawa Wako Saitama 351-0198 Japan ESNT IRFU CEA Université Paris-Saclay F-91191 Gif-sur-Yvette France IPNL Université de Lyon Université Lyon 1 CNRS/IN2P3 F-69622 Villeurbanne France School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 People’s Republic of China CEA DAM DIF F-91297 Arpajon France PNTPM CP229 Université Libre de Bruxelles B-1050 Bruxelles Belgium Department of Physics University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan Departamento de Física Teorica Universidad Autónoma de Madrid 28049 Madrid Spain Center for Nuclear Study University of Tokyo 7-3-1 Hongo Bunkyo Tokyo 113-0033 Japan GSI Helmholtzzentrum für Schwerionenforschung GmbH 64291 Darmstadt Germany Justus-Liebig-Universität Giessen D-35392 Giessen Germany Institut für Kernphysik Universität zu Köln 50937 Köln Germany School of Computing Engineering and Mathematics University of Brighton Brighton BN2 4GJ United Kingdom Department of Physics University of Surrey Guildford GU2 7XH United Kingdom Institute for Nuclear Science and Technology VAEI 179 Hoang Quoc Viet Cau Giay Hanoi Vietnam Institut für Kernphysik Technische Universität Darmstadt 64289 Darmstadt Germany Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 People’s Republic of China Institut de Physique Nucléaire CNRS-IN2P3 Université Paris—Sud Université Paris-Saclay 91406 Orsay Cedex France Instituto de Estructura de la Materia CSIC 28006 Madrid Spain Department of Physics The University of Hong Kong Pokfulam Hong Kong Department of Physics Faculty of Science Kyoto University Kyoto 606-8502 Japan Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH) RO-077125 Bucharest Romania Advanced Science Research Center Japan Atomic Energy Agency Tokai Ibaraki 319-1195 Japan

The first measurement of the low-lying states of the neutron-rich Zr110 and Mo112 was performed via in-beam γ-ray spectroscopy after one proton removal on hydrogen at ∼200 MeV/nucleon. The 21+ excitation energies were found at 185(11) keV in Zr110, and 235(7) keV in Mo112, while the R42=E(41+)/E(21+) ratios are 3.1(2), close to the rigid rotor value, and 2.7(1), respectively. These results are compared to modern energy density functional based configuration mixing models using Gogny and Skyrme effective interactions. We conclude that first levels of Zr110 exhibit a rotational behavior, in agreement with previous observations of lighter zirconium isotopes as well as with the most advanced Monte Carlo shell model predictions. The data, therefore, do not support a harmonic oscillator shell stabilization scenario at Z=40 and N=70. The present data also invalidate predictions for a tetrahedral ground state symmetry in Zr110.

关键词： Energy levels & level densities Nuclear structure & decays Rare & new isotopes 90 ≤ A ≤ 149 Collective models Nuclear density functional theory Radioactive beams Shell model Spectrometers & spectroscopic techniques

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New Wine in Old Bottles: Prolonging Room‐Temperature Phosphorescence of Crown Ethers by Supramolecular Interactions

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Angewandte Chemie 2019年第24期132卷

作者： Peifa Wei Xuepeng Zhang Junkai Liu Guo‐Gang Shan Haoke Zhang Ji Qi Weijun Zhao Herman H.‐Y. Sung Ian D. Williams Jacky W. Y. Lam Ben Zhong Tang Department of Chemistry The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction Institute for Advanced Study and Department of Chemical and Biological Engineering The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China Institutes of Physical Science and Information Technology Anhui University Hefei 230601 China HKUST-Shenzhen Research Institute No. 9 Yuexing 1st RD South Area Hi-tech Park Nanshan Shenzhen 518057 China Institute of Functional Material Chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China Center for Aggregation-Induced Emission SCUT-HKUST Joint Research Institute State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China

Supramolecular macrocyclic hosts have long been used in smart materials. However, their triplet emission and regulation at crystal level is rarely studied. Herein, ultralong and universal room‐temperature phosphorescence (RTP) is reported for traditional crown ethers. A supramolecular strategy involving chain length adjustment and morphological locking through complexation with K + was explored as a general method to tune the phosphorescence lifetime in the solid state. A maximum 10‐fold increase of lifetime after complex formation accompanied with by invisible to visible phosphorescence was achieved. A deep encryption based on this activated RTP strategy was also facilely fabricated. This work thus opens a new world for supramolecular macrocycles and their intrinsic guest responsiveness offers a new avenue for versatile smart luminescent materials.

关键词： Kronenether Makrocyclen Raumtemperatur-Phosphoreszenz Supramolekulare Wechselwirkungen Wirt-Gast-Chemie

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