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学者姓名：袁耀锋
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Abstract ：
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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Efficient control over several possible reaction pathways of free radicals is the chemical basis of their highly selective transformations. Among various competing reaction pathways, sulfonimidyl radicals generated from the electrolysis of 2-alkynylbenzenesulfonamides undergo cascade migratory or ortho-cyclization cyclization selectively. It is found that the incorporation of an extra 2-methyl substituent biases the selective migration of the acyl- over vinyl-linker of the key spirocyclic cation intermediate and thus serves as an enabling handle to achieve the synthetically interesting yet under-investigated cascade migratory cyclization of spirocyclic cations.
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| GB/T 7714 | Shi, Zhaojiang , Dong, Shicheng , Liu, Ting et al. Electrochemical cascade migratory versus ortho-cyclization of 2-alkynylbenzenesulfonamides [J]. | CHEMICAL SCIENCE , 2024 , 15 (8) : 2827-2832 . |
| MLA | Shi, Zhaojiang et al. "Electrochemical cascade migratory versus ortho-cyclization of 2-alkynylbenzenesulfonamides" . | CHEMICAL SCIENCE 15 . 8 (2024) : 2827-2832 . |
| APA | Shi, Zhaojiang , Dong, Shicheng , Liu, Ting , Wang, Wei-Zhen , Li, Nan , Yuan, Yaofeng et al. Electrochemical cascade migratory versus ortho-cyclization of 2-alkynylbenzenesulfonamides . | CHEMICAL SCIENCE , 2024 , 15 (8) , 2827-2832 . |
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The development of efficient and sustainable methods to obtain spirocyclic compounds is of significance as these structures are widely found in pharmaceuticals and agrochemicals. Herein, we disclose an electrochemical dearomative spirocyclization of N-acyl sulfonamides in a continuous-flow cell. The reaction is simple and efficient without external catalysts or supporting electrolytes and could be applied in a decagram-scale synthesis.
Keyword ：
Continuous-flow Continuous-flow Cyclization Cyclization Dearomatization Dearomatization Electrochemistry Electrochemistry Methodology and reactions Methodology and reactions Spirocyclization Spirocyclization Sulfonamides Sulfonamides
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| GB/T 7714 | Liu, Ting , Shi, Zhaojiang , Yuan, Yaofeng et al. Electrochemical Dearomative Spirocyclization of N-Acyl Sulfonamides in a Continuous-Flow Cell [J]. | CHINESE JOURNAL OF CHEMISTRY , 2024 , 42 (9) : 980-984 . |
| MLA | Liu, Ting et al. "Electrochemical Dearomative Spirocyclization of N-Acyl Sulfonamides in a Continuous-Flow Cell" . | CHINESE JOURNAL OF CHEMISTRY 42 . 9 (2024) : 980-984 . |
| APA | Liu, Ting , Shi, Zhaojiang , Yuan, Yaofeng , Lin, Yuqi , Ye, Ke-Yin . Electrochemical Dearomative Spirocyclization of N-Acyl Sulfonamides in a Continuous-Flow Cell . | CHINESE JOURNAL OF CHEMISTRY , 2024 , 42 (9) , 980-984 . |
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Abstract ：
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 (02) : 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 . 02 (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 (02) , 61-66 . |
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Organic nonlinear optical materials have attracted much attention due to their large nonlinear optical coefficients and ultrafast response speeds, as well as their potential applications in optical limiting (OL). Among them, nonlinear optical materials with phenanthrenone as the backbone are consistently understudied. We have successfully realized the transformation of organic small molecules in the nonlinear optical direction by replacing the carbonyl group on the structure of phenanthrenone with a malononitrile group. The nonlinear optical properties of CN-2 were investigated under different excitation conditions at 532 nm and the kinetic process of nonlinear optics was analyzed by transient absorption spectroscopy. In addition, we also investigated the OL properties of CN-2 , and the OL experiments showed that CN-2 with a lower OL threshold has superior OL properties than C 60 .
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| GB/T 7714 | Chen, Songhua , Zhu, Xiangzhao , Zhang, Ruiying et al. Third-order nonlinear optics and optical limiting of phenanthrenone derivatives [J]. | DYES AND PIGMENTS , 2024 , 225 . |
| MLA | Chen, Songhua et al. "Third-order nonlinear optics and optical limiting of phenanthrenone derivatives" . | DYES AND PIGMENTS 225 (2024) . |
| APA | Chen, Songhua , Zhu, Xiangzhao , Zhang, Ruiying , Huang, Mingyang , Song, Yinlin , Huang, Jianhua et al. Third-order nonlinear optics and optical limiting of phenanthrenone derivatives . | DYES AND PIGMENTS , 2024 , 225 . |
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Both synthesis and DFT calculation of [3 + 2] cycloaddition reaction (32CA) of quinolone-5,8-dione with 1,3dipole CF3CHN2 are studied. The focus of this work is to study the orbital interactions of this reaction by using molecular orbital tracing (MOT) method. MOT result shows that both quinolone-5,8-dione and CF3CHN2 use three electrons occupied molecular orbitals (MOs) to interact with each other, and the evolutive courses of the six molecular orbitals of reactants (initial MOs) to six electrons occupied molecular orbitals of product (final MOs) are given in this work. Three of the six initial MOs can evolve as final MOs directly, but rest of them need to go through media orbitals to complete the evolution. Perhaps the role of the media orbitals is to enable the reaction to proceed concertedly. APT charges analysis and changes of bond lengths during the reaction are also afforded in this work, and the result shows that the reaction begins with a nucleophilic attack of CF3CHN2 on quinolone-5,8-dione. Accompanying with the attack, negative charge transfers from CF3CHN2 to a carbon atom of quinolone-5,8-dione, then the carbon atom attacks nitrogen atom of CF3CHN2 to complete the cycloaddition. At last, a mechanism and a diagram of the molecular orbital interactions of the reaction are given.
Keyword ：
[3+2] cycloaddition reaction [3+2] cycloaddition reaction DFT calculation DFT calculation Media orbital Media orbital Molecular orbital tracing Molecular orbital tracing synthesis synthesis
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| GB/T 7714 | Huang, Zhiyong , Lei, Chun , Cheng, Yao et al. A study on the orbital interactions of [3+2] cycloaddition by means of molecular orbital tracing method [J]. | JOURNAL OF MOLECULAR STRUCTURE , 2024 , 1306 . |
| MLA | Huang, Zhiyong et al. "A study on the orbital interactions of [3+2] cycloaddition by means of molecular orbital tracing method" . | JOURNAL OF MOLECULAR STRUCTURE 1306 (2024) . |
| APA | Huang, Zhiyong , Lei, Chun , Cheng, Yao , Yuan, Yaofeng , Zhang, Yongfan , Wang, Wenfeng . A study on the orbital interactions of [3+2] cycloaddition by means of molecular orbital tracing method . | JOURNAL OF MOLECULAR STRUCTURE , 2024 , 1306 . |
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Abstract ：
研究生教育是高等教育的最高层次,是衡量一个国家高等教育竞争力的关键标志,是拔尖创新人才自主培养的主渠道.为了提高人才培养质量,在"以学生为中心,注重科学思维培养,注重科研能力培养以及注重国际视野培养"的教学思想指导下,针对有机结构分析课程教学过程中存在的难点问题,从"教学理念的国际化、教学内容的国际化、教学团队的国际化、教学方法的国际化"等方面进行创新教学实践,取得了一系列成果,有效地提升了学生的科研水平,对于创新型人才的培养起到了积极的推动作用.
Keyword ：
国际化视野 国际化视野 学生为中心 学生为中心 有机结构分析 有机结构分析 研究生教学 研究生教学
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| GB/T 7714 | 袁耀锋 , 叶克印 , 徐春发 et al. 在研究生课程的教学中注重国际视野的培养 [J]. | 大学化学 , 2024 , 39 (6) : 145-150 . |
| MLA | 袁耀锋 et al. "在研究生课程的教学中注重国际视野的培养" . | 大学化学 39 . 6 (2024) : 145-150 . |
| APA | 袁耀锋 , 叶克印 , 徐春发 , 晏宏 , 李远明 . 在研究生课程的教学中注重国际视野的培养 . | 大学化学 , 2024 , 39 (6) , 145-150 . |
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This study presents the design, synthesis, and comprehensive characterization of a novel series of D-π-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 (μ). 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 β value (2×10−8 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. © 2024 Wiley-VCH GmbH.
Keyword ：
Alkylation Alkylation Aromatic compounds Aromatic compounds Charge transfer Charge transfer Chromophores Chromophores Organometallics Organometallics Spectroscopic analysis Spectroscopic analysis
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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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Here, α- or β-thiophene-substituted derivatives bridged by an o-carborane group were synthesized. Scanning tunneling microscope break junction techniques have revealed that the thiophene anchoring groups form a single-molecule junction with an Au electrode. Flicker noise analysis suggests the existence of through-space transmission pathways between the thiophene units. Furthermore, the electronic coupling of the β-thiophene substituted molecule with the electrode is found to be more stable, resulting in a 70 % increase in conductance compared to the α-isomer counterpart.These findings offer valuable insights for the design and development of o-carborane-based molecules, underscoring the significance of molecular backbones and substitution patterns on their electrical transport properties. © 2024
Keyword ：
Electronic coupling Electronic coupling O-carborane O-carborane Single-molecule conductance Single-molecule conductance STM-BJ STM-BJ Thiophene Thiophene
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| GB/T 7714 | Chen, Z.-Y. , Dai, Y.-H. , Xu, S.-N. et al. Synthesis, characterization, and electronic transport properties of o-carborane-bridged thiophene derivatives [J]. | Journal of Organometallic Chemistry , 2024 , 1016 . |
| MLA | Chen, Z.-Y. et al. "Synthesis, characterization, and electronic transport properties of o-carborane-bridged thiophene derivatives" . | Journal of Organometallic Chemistry 1016 (2024) . |
| APA | Chen, Z.-Y. , Dai, Y.-H. , Xu, S.-N. , Yan, J.-F. , Geng, Y.-H. , Yuan, Y.-F. . Synthesis, characterization, and electronic transport properties of o-carborane-bridged thiophene derivatives . | Journal of Organometallic Chemistry , 2024 , 1016 . |
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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–H···F 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 × 10−6 M, LOQ = 1.03 × 10−5 M, Ka = 5.83 × 105 M−1; and OH–: LOD = 1.36 × 10−6 M, LOQ = 4.11 × 10−5 M, Ka = 9.03 × 105 M−1). 1H NMR titrations demonstrated that anion was recognized by receptor 1 through (C–H)+···X− and C–H···X hydrogen bonds, the binding process involve initial formation of hydrogen bond and followed by deprotonation. © 2024
Keyword ：
1H NMR spectroscopy 1H NMR spectroscopy Anion receptor Anion receptor Benzimidazolium salt Benzimidazolium salt Electrochemistry Electrochemistry Ferrocene Ferrocene UV-vis UV-vis
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| GB/T 7714 | Zhuo, J.-B. , Yan, J.-F. , Yuan, Y.-F. . Electrochemical and optical recognition studies of anions using a multi-site ferrocene-based benzimidazolium receptor [J]. | Journal of Organometallic Chemistry , 2024 , 1021 . |
| MLA | Zhuo, J.-B. 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, J.-B. , Yan, J.-F. , Yuan, Y.-F. . 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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