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Zhao MY, Tang YF, Han GZ. Recent Advances in the Synthesis of Aromatic Azo Compounds. Molecules 2023; 28:6741. [PMID: 37764517 PMCID: PMC10538219 DOI: 10.3390/molecules28186741] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Aromatic azo compounds have -N=N- double bonds as well as a larger π electron conjugation system, which endows aromatic azo compounds with wide applications in the fields of functional materials. The properties of aromatic azo compounds are closely related to the substituents on their aromatic rings. However, traditional synthesis methods, such as the coupling of diazo salts, have a significant limitation with respect to the structural design of aromatic azo compounds. Therefore, many scientists have devoted their efforts to developing new synthetic methods. Moreover, recent advances in the synthesis of aromatic azo compounds have led to improvements in the design and preparation of light-response materials at the molecular level. This review summarizes the important synthetic progress of aromatic azo compounds in recent years, with an emphasis on the pioneering contribution of functional nanomaterials to the field.
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Affiliation(s)
| | | | - Guo-Zhi Han
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China; (M.-Y.Z.); (Y.-F.T.)
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Casimiro L, Andreoni L, Groppi J, Credi A, Métivier R, Silvi S. 4,4'-Dimethylazobenzene as a chemical actinometer. Photochem Photobiol Sci 2022; 21:825-833. [PMID: 35034332 DOI: 10.1007/s43630-021-00162-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/17/2021] [Indexed: 11/28/2022]
Abstract
Chemical actinometers are a useful tool in photochemistry, which allows to measure the photon flux of a light source to carry out quantitative analysis on photoreactions. The most commonly employed actinometers so far show minor drawbacks, such as difficult data treatment, parasite reactions, low stability or impossible reset. We propose herewith the use of 4,4'-dimethylazobenzene as a chemical actinometer. This compound undergoes a clean and efficient E/Z isomerization, approaching total conversion upon irradiation at 365 nm. Thanks to its properties, it can be used to determine the photon flux in the UV-visible region, with simple experimental methods and data treatment, and with the possibility to be reused after photochemical or thermal reset.
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Affiliation(s)
- Lorenzo Casimiro
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM-UMR 8531, 91190, Gif-sur-Yvette, France.
| | - Leonardo Andreoni
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, 40126, Bologna, Italy.,CLAN-Center for Light Activated Nanostructures, Istituto ISOF-CNR, via Gobetti 101, 40129, Bologna, Italy
| | - Jessica Groppi
- CLAN-Center for Light Activated Nanostructures, Istituto ISOF-CNR, via Gobetti 101, 40129, Bologna, Italy
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures, Istituto ISOF-CNR, via Gobetti 101, 40129, Bologna, Italy.,Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, 40136, Bologna, Italy
| | - Rémi Métivier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM-UMR 8531, 91190, Gif-sur-Yvette, France
| | - Serena Silvi
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, 40126, Bologna, Italy. .,CLAN-Center for Light Activated Nanostructures, Istituto ISOF-CNR, via Gobetti 101, 40129, Bologna, Italy.
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Zhang F, Hou H, Xu X, Chen Z, Ke F. Visible-Light-Induced Preparation of Quinazolinones by Oxidation of Benzyl Alcohols in Water. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202007027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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