Tunable Mechanical and Optoelectronic Properties of Organic Cocrystals by Unexpected Stacking Transformation from H- to J- and X-Aggregation
文献类型：期刊论文
| 作者 | Ji, Wei9; Xue, Bin8; Bera, Santu9; Guerin, Sarah7; Liu, Yanqing6; Yuan, Hui5; Li, Qi4; Yuan, Chengqian4; Shimon, Linda J. W.3; Ma, Qing2 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2020-08-25 |
| 卷号 | 14期号:8页码:10704-10715 |
| 关键词 | organic crystals coassembly molecular stacking mechanical property optoelectronic materials supramolecular chemistry |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/acsnano.0c05367 |
| 英文摘要 | Molecular stacking modes, generally classified as H-, J-, and X-aggregation, play a key role in determining the optoelectronic properties of organic crystals. However, the control of stacking transformation of a specific molecule is an unmet challenge, and a priori prediction of the performance in different stacking modes is extraordinarily difficult to achieve. In particular, the existence of hybrid stacking modes and their combined effect on physicochemical properties of molecular crystals are not fully understood. Herein, unexpected stacking transformation from H- to J- and X-aggregation is observed in the crystal structure of a small heterocyclic molecule, 4,4'bipyridine (4,4'-Bpy), upon coassembly with N-acetyl-L-alanine (ACA), a nonaromatic amino acid derivative. This structural transformation into hybrid stacking mode improves physicochemical properties of the cocrystals, including a large red-shifted emission, enhanced supramolecular chirality, improved thermal stability, and higher mechanical properties. While a single crystal of 4,4'-Bpy shows good optical waveguiding and piezoelectric properties due to the uniform elongated needles and low symmetry of crystal packing, the significantly lower band gap and resistance of the cocrystal indicate improved conductivity. This study not only demonstrates cocrystallization-induced packing transformation between H-, J-, and X-aggregations in the solid state, leading to tunable mechanical and optoelectronic properties, but also will inspire future molecular design of organic functional materials by the coassembly strategy. |
| WOS关键词 | SUPRAMOLECULAR CHIRALITY ; INDUCED EMISSION ; SOLID-STATE ; CRYSTAL ; DESIGN ; FLUORESCENCE ; MOLECULES ; BEHAVIOR ; DYES |
| 资助项目 | European Research Council under the European Union Horizon 2020 research and innovation program[694426] ; Science Foundation Ireland (SFI)[15/CDA/3491] ; Science Foundation Ireland (SFI)[12/RC/2275] ; National Natural Science Foundation of China[11804148] ; Natural Science Foundation of Jiangsu Province[BK20180320] ; Fundamental Research Funds for the Central Universities[020414380118] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000566341000131 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | European Research Council under the European Union Horizon 2020 research and innovation program ; Science Foundation Ireland (SFI) ; National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/41952]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Gazit, Ehud |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Colloid Interface & Chem Thermodynam, Inst Chem, Beijing 100190, Peoples R China 2.China Acad Engn Phys, Inst Chem Mat, Mianyang 621900, Sichuan, Peoples R China 3.Weizmann Inst Sci, Dept Chem Res Support, IL-76100 Rehovot, Israel 4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 5.Xidian Univ, Sch Adv Mat & Nanotechnol, Xian 710126, Peoples R China 6.Lanzhou Univ, Key Lab Magnetism & Magnet Mat, Minist Educ, Lanzhou 730000, Peoples R China 7.Univ Limerick, Dept Phys, Bernal Inst, Limerick V94 T9PX, Ireland 8.Nanjing Univ, Dept Phys, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China 9.Tel Aviv Univ, George S Wise Fac Life Sci, Sch Mol Cell Biol & Biotechnol, IL-6997801 Tel Aviv, Israel |
| 推荐引用方式 GB/T 7714 | Ji, Wei,Xue, Bin,Bera, Santu,et al. Tunable Mechanical and Optoelectronic Properties of Organic Cocrystals by Unexpected Stacking Transformation from H- to J- and X-Aggregation[J]. ACS NANO,2020,14(8):10704-10715. |
| APA | Ji, Wei.,Xue, Bin.,Bera, Santu.,Guerin, Sarah.,Liu, Yanqing.,...&Gazit, Ehud.(2020).Tunable Mechanical and Optoelectronic Properties of Organic Cocrystals by Unexpected Stacking Transformation from H- to J- and X-Aggregation.ACS NANO,14(8),10704-10715. |
| MLA | Ji, Wei,et al."Tunable Mechanical and Optoelectronic Properties of Organic Cocrystals by Unexpected Stacking Transformation from H- to J- and X-Aggregation".ACS NANO 14.8(2020):10704-10715. |
入库方式： OAI收割
来源：过程工程研究所
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