GSTDTAP  > 地球科学
DOI10.1126/science.aan0202
Two-dimensional sp(2) carbon-conjugated covalent organic frameworks
Jin, Enquan1; Asada, Mizue2; Xu, Qing1; Dalapati, Sasanka1; Addicoat, Matthew A.3; Brady, Michael A.4; Xu, Hong1,2; Nakamura, Toshikazu2; Heine, Thomas5; Chen, Qiuhong1; Jiang, Donglin1
2017-08-18
发表期刊SCIENCE
ISSN0036-8075
EISSN1095-9203
出版年2017
卷号357期号:6352页码:673-676
文章类型Article
语种英语
国家Japan; England; USA; Germany
英文摘要

We synthesized a two-dimensional (2D) crystalline covalent organic framework (sp(2)c-COF) that was designed to be fully pi-conjugated and constructed from all sp(2) carbons by C=C condensation reactions of tetrakis(4-formylphenyl)pyrene and 1,4-phenylenediacetonitrile. The C=C linkages topologically connect pyrene knots at regular intervals into a 2D lattice with pi conjugations extended along both x and y directions and develop an eclipsed layer framework rather than the more conventionally obtained disordered structures. The sp(2)c-COF is a semiconductor with a discrete band gap of 1.9 electron volts and can be chemically oxidized to enhance conductivity by 12 orders of magnitude. The generated radicals are confined on the pyrene knots, enabling the formation of a paramagnetic carbon structure with high spin density. The sp(2) carbon framework induces ferromagnetic phase transition to develop spin-spin coherence and align spins unidirectionally across the material.


领域地球科学 ; 气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000407793600031
WOS关键词POLARONS ; ELECTROLUMINESCENT ; CONDENSATION ; BIPOLARONS ; POLYMERS
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
URL查看原文
引用统计
被引频次:971[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/196691
专题地球科学
资源环境科学
气候变化
作者单位1.Japan Adv Inst Sci & Technol, Sch Mat Sci, Field Energy & Environm, 1-1 Asahidai, Nomi 9231292, Japan;
2.Inst Mol Sci, Dept Mat Mol Sci, 38 Nishigo Naka, Okazaki, Aichi 4448585, Japan;
3.Nottingham Trent Univ, Sch Sci & Technol, Clifton Lane, Nottingham NG11 8NS, England;
4.Lawrence Berkeley Natl Lab, Mol Foundry & Adv Light Source, 1 Cyclotron Rd,Mailstop 15R0317, Berkeley, CA 94720 USA;
5.Univ Leipzig, Wilhelm Ostwald Inst Phys & Theoret Chem, Linnestr 2, D-04103 Leipzig, Germany
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GB/T 7714
Jin, Enquan,Asada, Mizue,Xu, Qing,et al. Two-dimensional sp(2) carbon-conjugated covalent organic frameworks[J]. SCIENCE,2017,357(6352):673-676.
APA Jin, Enquan.,Asada, Mizue.,Xu, Qing.,Dalapati, Sasanka.,Addicoat, Matthew A..,...&Jiang, Donglin.(2017).Two-dimensional sp(2) carbon-conjugated covalent organic frameworks.SCIENCE,357(6352),673-676.
MLA Jin, Enquan,et al."Two-dimensional sp(2) carbon-conjugated covalent organic frameworks".SCIENCE 357.6352(2017):673-676.
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