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Fang Z, Tan S, Wu F, Jiao Y, Au C, Wang Y, Shen J, Yi B. Solvent and substituent effects on ultraviolet absorption properties of Schiff bases—models of molecular-core of mesogenic compounds. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128590] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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The achiral β-alanine self organizes into supramolecular helical chains in crystallized achiral β-alaninium inorganic/organic acid compounds. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.126920] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Fang Z, Wu F, Lin L, Qin Q, Au C, Tao Q, Li X, Yu D, Yi B. Effects of sulfonation on bis-styrylbiphenyl fluorescent whitening agents for polypropylene. J Appl Polym Sci 2019. [DOI: 10.1002/app.47635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhengjun Fang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
- Department of Chemistry and Bioscience; Aalborg University; Aalborg 9220 Denmark
| | - Feng Wu
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
| | - Liangwei Lin
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
| | - Qiwen Qin
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
| | - Chaktong Au
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
| | - Qiang Tao
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
- Department of Chemistry and Bioscience; Aalborg University; Aalborg 9220 Denmark
| | - Xitian Li
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
| | - Donghong Yu
- Department of Chemistry and Bioscience; Aalborg University; Aalborg 9220 Denmark
- Sino-Danish Center for Education and Research (SDC); Aarhus 8000 Denmark
| | - Bing Yi
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling; School of Chemistry and Chemical Engineering, Hunan Institute of Engineering; Xiangtan 411104 China
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Fang Z, Wu F, Tao Q, Qin Q, Au C, Li Y, Zhang H, Wang N, Yi B. Substituent effects on the ultraviolet absorption properties of stilbene compounds-Models for molecular cores of absorbents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 215:9-14. [PMID: 30825869 DOI: 10.1016/j.saa.2019.02.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 02/02/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
The effects of substituent X and Y on ultraviolet (UV) absorption properties of stilbene compounds XPhCHCHPhY (XSBY) were studied both experimentally and computationally from the viewpoint of UV maximum absorption wavelength (λmax) and the corresponding energy (υmax). In the studies, the contribution of substituents on υmax shift was explored. The results show that with increase of electron withdrawing or electron donating ability of X or Y, there is an enhanced electron delocalization of XSBY that leads to bathochromic shift. Computational analyses based on density functional theory were conducted to elucidate the phenomena. It is disclosed that the υmax values are significantly affected by the excited state, though the electronic effect of ground state cannot be ignored. Finally, on the basis of the respective influences of X and Y, a quantitative model, which was proved reliable by the leave-one-out method, was developed to scale the effects of terminal substituents on υmax. According to the model, the effects of substituents X or Y exhibit almost the same action on υmax owing to the symmetric skeleton of the XSBY compounds. The findings provide deep insight into the effects of terminal substituents on UV absorption properties of stilbene compounds, and the derived model enables practical expression of the relationship between substituents and UV absorption.
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Affiliation(s)
- Zhengjun Fang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China.
| | - Feng Wu
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Qiang Tao
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China; Department of Chemistry and Bioscience, Aalborg University, Aalborg 9220, Denmark
| | - Qiwen Qin
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Chaktong Au
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Yajun Li
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Houpeng Zhang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Nanfang Wang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China.
| | - Bing Yi
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China.
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