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学者姓名:鄢剑锋
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单分子电子学作为纳米技术的重要分支,致力于研究单个分子的电学特性,为发展超小型、低功耗电子器件提供理论基础与技术支撑.精确调控单分子结的电子传输性质,是该领域面临的核心技术挑战.电化学调控,凭借其卓越的调控性和可逆性,正成为单分子电子学中一个极具潜力的研究方向.本文综述了近十年电化学调控在单分子电子学中的应用进展,涵盖了电输运能级、分子价态、电极与分子间键合方式以及离子液体双电层栅极的调控策略.通过分析具体案例,旨在帮助学生了解单分子电子学的研究前沿,理解其在现代纳米电子学中的重要性.
Keyword :
分子价态 分子价态 单分子电子学 单分子电子学 电化学调控 电化学调控 能级 能级 键合方式 键合方式
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GB/T 7714 | 王靖文 , 吴明昊 , 左鑫 et al. 电化学调控在单分子结电子传输性质研究中的应用进展 [J]. | 大学化学 , 2025 , 40 (3) : 291-301 . |
MLA | 王靖文 et al. "电化学调控在单分子结电子传输性质研究中的应用进展" . | 大学化学 40 . 3 (2025) : 291-301 . |
APA | 王靖文 , 吴明昊 , 左鑫 , 袁耀锋 , 王亚浩 , 周小顺 et al. 电化学调控在单分子结电子传输性质研究中的应用进展 . | 大学化学 , 2025 , 40 (3) , 291-301 . |
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Phenanthrenone 1 was synthesized via cyclization of 4,5-dibromo-9-fluorenone with diarylacetylenes, followed by selective reduction of the carbonyl group to yield hydroxyl derivative 2 and methylene derivative 3, alongside reference molecule 4. UV-vis absorption spectroscopy revealed that compound 3 exhibits a blueshift (lambda max = 257 nm) compared to compound 1 (lambda max = 264 nm) due to the disruption of conjugation by the methylene group, while compound 2 (lambda max = 267 nm) shows a redshift compared to compound 3, attributed to the electron-donating effect of the hydroxyl group. Single-molecule conductance measurements using the STM-BJ technique demonstrated a 2-fold difference between 1 (10-4.37 +/- 0.01G0) and 3 (10-4.67 +/- 0.01G0), attributed to the carbonyl group's ability to lower the HOMO-LUMO gap and enhance charge transport. Notably, cyclization at the 4,5-positions has a limited impact on conductance, as evidenced by the small differences between 1 (10-4.37 +/- 0.01G0), 2 (10-4.63 +/- 0.01G0), and 4 (10-4.50 +/- 0.01G0). These results indicate that functional group modifications and skeletal cyclization both influence the electronic properties of phenanthrenone derivatives, with functional group modifications playing a more noticeable role in modulating conductance. This work provides a framework for designing functional organic molecules with tailored electronic properties, advancing the development of next-generation nanoscale electronic devices.
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GB/T 7714 | Shen, Shan-Shan , Xiao, Ya-Ting , Bai, Zhe-Hao et al. Synthesis, structure and electronic transport properties of phenanthrenone derivatives [J]. | NEW JOURNAL OF CHEMISTRY , 2025 , 49 (22) : 9177-9184 . |
MLA | Shen, Shan-Shan et al. "Synthesis, structure and electronic transport properties of phenanthrenone derivatives" . | NEW JOURNAL OF CHEMISTRY 49 . 22 (2025) : 9177-9184 . |
APA | Shen, Shan-Shan , Xiao, Ya-Ting , Bai, Zhe-Hao , Gan, Zi-Yang , Ding, Ye-Hao , Yan, Jian-Feng et al. Synthesis, structure and electronic transport properties of phenanthrenone derivatives . | NEW JOURNAL OF CHEMISTRY , 2025 , 49 (22) , 9177-9184 . |
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Organic nonlinear optical (NLO) materials with strong light-responsive properties have garnered significant attention in the field of optoelectronics due to their chemical tunability and cost-effective synthesis. Enhancing the NLO performance of these materials is essential to meet the growing demands in applications such as optical modulation and communication. Interestingly, twisted structures have been shown to alter NLO properties, offering a novel design approach. This review systematically examines recent advances in twisted D-pi-A type organic chromophores for enhancing NLO performance, with a particular focus on the key mechanisms of molecular structure design and performance optimization. It provides a detailed discussion of the design strategies aimed at improving the NLO performance of twisted organic chromophores, highlighting the significance of twisted structures and electronic group design. The literature review indicates that optimizing twist angles, strengthening donor and acceptor group intensities, and optimizing pi-conjugated bridges are effective ways to enhance NLO performance.
Keyword :
intramolecular charge transfer intramolecular charge transfer molecular design molecular design nonlinear optics nonlinear optics wisted chromophores wisted chromophores
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GB/T 7714 | Xue, Kai , Zhu, Xiang-Zhao , Yan, Jian-Feng et al. Advances in Nonlinear Optics of Twisted Push Pull Organic Chromophores [J]. | CHEMPHOTOCHEM , 2025 , 9 (8) . |
MLA | Xue, Kai et al. "Advances in Nonlinear Optics of Twisted Push Pull Organic Chromophores" . | CHEMPHOTOCHEM 9 . 8 (2025) . |
APA | Xue, Kai , Zhu, Xiang-Zhao , Yan, Jian-Feng , Chen, Song-Hua , Yuan, Yao-Feng . Advances in Nonlinear Optics of Twisted Push Pull Organic Chromophores . | CHEMPHOTOCHEM , 2025 , 9 (8) . |
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This study presents the design, synthesis, and comprehensive characterization of a novel series of D-pi-A type malononitrile-derived chromophores, BTC-1-BTC-4. Combining various spectroscopic techniques, nonlinear Z-scan measurements, and quantum chemical calculations, we revealed the intricate relationship between nonlinear optical properties and the interplay of molecular structure, intramolecular charge transfer (ICT), and dipole moments (mu). Our experimental and computational findings corroborate that the polarization degree in the ground state, the charge separation in the excited state and twisted intramolecular charge transfer (TICT) collectively dictate the nonlinear optical properties of the compounds. Notably, BTC-1 exhibits an exceptional nonlinear absorption coefficient beta value (2x10(-8) m W-1), attributed to its optimized charge transfer efficiency and pronounced degree of charge separation. Our findings provide actionable insights for the rational design of high-performance organic Nonlinear optics (NLO) materials with potential applications in advanced photonic devices.
Keyword :
D-pi-A compounds D-pi-A compounds ICT ICT NLO materials NLO materials pi-Spacers pi-Spacers TICT TICT
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GB/T 7714 | Zhu, Xiang-Zhao , Chen, Song-Hua , Xu, Jia-Bei et al. Unveiling the Twisted Aromatic Donor Effect on the Nonlinear Response of D-π-A Type Malononitrile-Derived Chromophores [J]. | CHEMISTRY-A EUROPEAN JOURNAL , 2024 , 30 (53) . |
MLA | Zhu, Xiang-Zhao et al. "Unveiling the Twisted Aromatic Donor Effect on the Nonlinear Response of D-π-A Type Malononitrile-Derived Chromophores" . | CHEMISTRY-A EUROPEAN JOURNAL 30 . 53 (2024) . |
APA | Zhu, Xiang-Zhao , Chen, Song-Hua , Xu, Jia-Bei , Huang, Jian-hua , Yan, Jian-Feng , Yuan, Yao-Feng . Unveiling the Twisted Aromatic Donor Effect on the Nonlinear Response of D-π-A Type Malononitrile-Derived Chromophores . | CHEMISTRY-A EUROPEAN JOURNAL , 2024 , 30 (53) . |
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A class of side-chain type ferrocene macrocycles with a radially conjugated system is introduced in this study. The stereo configurations of these ferrocene rings were determined through single-crystal X-ray diffraction analysis. Notably, in the solid state, the ferrocene rings exhibit a distinctive herringbone stacking pattern imposed by a ferrocene-to-ring host-guest interaction. Through UV-vis absorption spectroscopy, electrochemical measurements, and theoretical calculations, valuable insights into the electronic properties of these rings were obtained. In addition, the single crystal of macrocycle A2B demonstrates a second-order nonlinear optical response. As a class of organometallic nanorings, this work holds great potential for further exploration in the fields of organometallic chemistry, molecular electronics, and host-guest chemistry. © 2024 The Authors. Co-published by University of Science and Technology of China and American Chemical Society.
Keyword :
Conjugated Macrocycles Conjugated Macrocycles Ferrocene Ferrocene Nanoring Nanoring Organometallic Macrocycles Organometallic Macrocycles Second-Order Nonlinear Optical Second-Order Nonlinear Optical
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GB/T 7714 | Lan, B. , Xu, J. , Zhu, L. et al. Side-Chain Type Ferrocene Macrocycles [J]. | Precision Chemistry , 2024 , 2 (4) : 143-150 . |
MLA | Lan, B. et al. "Side-Chain Type Ferrocene Macrocycles" . | Precision Chemistry 2 . 4 (2024) : 143-150 . |
APA | Lan, B. , Xu, J. , Zhu, L. , Chen, X. , Kono, H. , Wang, P. et al. Side-Chain Type Ferrocene Macrocycles . | Precision Chemistry , 2024 , 2 (4) , 143-150 . |
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有机电化学合成技术以电子代替传统有机反应的氧化还原剂,具有经济高效、环境友好、可持续发展等特点.通过将电化学合成苯并噁噻嗪二氧化物的科研成果转化为本科生实验,可以让学生建立"绿色化学"的理念,了解有机电化学合成技术对服务人类生态文明、国家需求和维护人民生命健康的重要意义,从而提高学生的专业认同感和社会责任感.通过将课程思政渗透到实验教学的全过程,全方位培养学生的科学思维、科学能力和科学素养.
Keyword :
实验教学 实验教学 电化学合成 电化学合成 课程思政 课程思政
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GB/T 7714 | 林彩霞 , 施兆江 , 余意 et al. 电化学合成苯并噁噻嗪二氧化物实验的课程思政设计 [J]. | 大学化学 , 2024 , 39 (2) : 61-66 . |
MLA | 林彩霞 et al. "电化学合成苯并噁噻嗪二氧化物实验的课程思政设计" . | 大学化学 39 . 2 (2024) : 61-66 . |
APA | 林彩霞 , 施兆江 , 余意 , 鄢剑锋 , 叶克印 , 袁耀锋 . 电化学合成苯并噁噻嗪二氧化物实验的课程思政设计 . | 大学化学 , 2024 , 39 (2) , 61-66 . |
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A novel multi-site receptor 1 bearing four ferrocenyl arms comprising benzimidazolium moieties was synthesized and structurally characterized by IR, NMR, elemental analysis, mass spectra. Moreover, the structure of receptor 1 was confirmed by X-ray crystallography, it was clear that the cationic heterocyclic was interacted with PF6- through C-HF hydrogen bonds. Its electrochemical properties of sensing the various anions were investigated by cyclic voltammograms (CV) and differential pulse voltammetry (DPV), the receptor 1 displayed a significant cathodic shift for F(-)and OH-. The addition of F- and OH(-)to the solution of receptor 1 resulted in obvious absorption changes in the UV-Vis spectrum, showing that receptor 1 was an excellent sensor for these analytes (F-: LOD = 3.11 x 10(-6) M, LOQ = 1.03 x 10(-5) M, K-a = 5.83 x 10(5) M-1; and OH-: LOD = 1.36 x 10(-6) M, LOQ = 4.11 x 10(-5) M, K-a = 9.03 x 10(5) M-1). H-1 NMR titrations demonstrated that anion was recognized by receptor 1 through (C-H)(+)X- and C-HX hydrogen bonds, the binding process involve initial formation of hydrogen bond and followed by deprotonation.
Keyword :
Anion receptor Anion receptor Benzimidazolium salt Benzimidazolium salt Electrochemistry Electrochemistry Ferrocene Ferrocene H-1 NMR spectroscopy H-1 NMR spectroscopy UV-vis UV-vis
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GB/T 7714 | Zhuo, Ji-Bin , Yan, Jian-Feng , Yuan, Yao-Feng . Electrochemical and optical recognition studies of anions using a multi-site ferrocene-based benzimidazolium receptor [J]. | JOURNAL OF ORGANOMETALLIC CHEMISTRY , 2024 , 1021 . |
MLA | Zhuo, Ji-Bin et al. "Electrochemical and optical recognition studies of anions using a multi-site ferrocene-based benzimidazolium receptor" . | JOURNAL OF ORGANOMETALLIC CHEMISTRY 1021 (2024) . |
APA | Zhuo, Ji-Bin , Yan, Jian-Feng , Yuan, Yao-Feng . Electrochemical and optical recognition studies of anions using a multi-site ferrocene-based benzimidazolium receptor . | JOURNAL OF ORGANOMETALLIC CHEMISTRY , 2024 , 1021 . |
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Polyferrocene macrocycles hold immense potential in the fields of molecular electronics and electrochemistry, primarily due to their multiple metal centers. However, developing highly efficient synthetic strategies for constructing these rings remains a significant challenge. In this study, we successfully synthesized triferrocenyl macrocycles using Pt-mediated coupling strategy and determined their configuration using single-crystal X-ray diffraction analysis, revealing a structure reminiscent of the Penrose Stair. We comprehensively investigated the macrocycle's structure, photophysical properties, and employed density functional theory (DFT) calculations to gain further insights. Notably, this macrocycle exhibits several advantageous features, including a flexible structure, good solubility, and a highly efficient synthetic pathway.
Keyword :
Conjugated macrocycle Conjugated macrocycle Organometallic macrocycle Organometallic macrocycle Pt-template method Pt-template method
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GB/T 7714 | Xu, Jindong , Lan, Bin , Zhu, Lingyun et al. Synthesis and Properties of Ferrocene Conjugated Macrocycles with Illusory Topology of the Penrose Stairs [J]. | CHEMICAL RESEARCH IN CHINESE UNIVERSITIES , 2024 , 40 (5) : 881-886 . |
MLA | Xu, Jindong et al. "Synthesis and Properties of Ferrocene Conjugated Macrocycles with Illusory Topology of the Penrose Stairs" . | CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 40 . 5 (2024) : 881-886 . |
APA | Xu, Jindong , Lan, Bin , Zhu, Lingyun , Xu, Hui , Chen, Xinyu , Li, Wenjuan et al. Synthesis and Properties of Ferrocene Conjugated Macrocycles with Illusory Topology of the Penrose Stairs . | CHEMICAL RESEARCH IN CHINESE UNIVERSITIES , 2024 , 40 (5) , 881-886 . |
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The synthesis, structure, and size-dependent properties of ferrocene-embedded conjugated macrocycles are described. The one-pot, two-component "shotgun" synthesis greatly expands the structural diversity and functionality of nanohoops. These eta 5-type coordination metal-nanohoops exhibit intriguing properties, including reversible redox behavior and collisional quenching with fullerenes. Notably, the addition of oxidants enhances their fluorescence intensity, while fullerenes quench it. Detailed theoretical and experimental studies reveal that fine-tuning the nanohoop size significantly influences not only the molecular conformation but also its electronic structure and photophysical properties. Ferrocene-based conjugated macrocycles were efficiently synthesized by a "shotgun" approach. The fluorescence intensity of the macrocycles can be modulated in two intriguing ways: enhancement by adding an oxidant and quenching by adding fullerenes.
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GB/T 7714 | Zhu, Lingyun , Xu, Jingdong , Lan, Bin et al. Ferrocene-based conjugated macrocycles: shotgun synthesis, size-dependent properties and tunable fluorescence intensity [J]. | ORGANIC CHEMISTRY FRONTIERS , 2024 , 11 (18) : 5130-5137 . |
MLA | Zhu, Lingyun et al. "Ferrocene-based conjugated macrocycles: shotgun synthesis, size-dependent properties and tunable fluorescence intensity" . | ORGANIC CHEMISTRY FRONTIERS 11 . 18 (2024) : 5130-5137 . |
APA | Zhu, Lingyun , Xu, Jingdong , Lan, Bin , Chen, Xinyu , Kono, Hideya , Xu, Hui et al. Ferrocene-based conjugated macrocycles: shotgun synthesis, size-dependent properties and tunable fluorescence intensity . | ORGANIC CHEMISTRY FRONTIERS , 2024 , 11 (18) , 5130-5137 . |
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Polyferrocene macrocycles hold immense potential in the fields of molecular electronics and electrochemistry,primarily due to their multiple metal centers.However,developing highly efficient synthetic strategies for constructing these rings remains a significant challenge.In this study,we successfully synthesized tri-ferrocenyl macrocycles using Pt-mediated coupling strategy and determined their configuration using single-crystal X-ray diffraction analysis,revealing a structure reminiscent of the Penrose Stair.We comprehensively investigated the macrocycle's structure,photophysical properties,and employed density functional theory(DFT)calculations to gain further insights.Notably,this macrocycle exhibits several advantageous features,including a flexible structure,good solubility,and a highly efficient synthetic pathway.
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GB/T 7714 | XU Jindong , LAN Bin , ZHU Lingyun et al. Synthesis and Properties of Ferrocene Conjugated Macrocycles with Illusory Topology of the Penrose Stairs [J]. | 高等学校化学研究(英文版) , 2024 , 40 (5) : 881-886 . |
MLA | XU Jindong et al. "Synthesis and Properties of Ferrocene Conjugated Macrocycles with Illusory Topology of the Penrose Stairs" . | 高等学校化学研究(英文版) 40 . 5 (2024) : 881-886 . |
APA | XU Jindong , LAN Bin , ZHU Lingyun , XU Hui , CHEN Xinyu , LI Wenjuan et al. Synthesis and Properties of Ferrocene Conjugated Macrocycles with Illusory Topology of the Penrose Stairs . | 高等学校化学研究(英文版) , 2024 , 40 (5) , 881-886 . |
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