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Spectroelectrochemical studies of electrochromic diarylethene ionic Liquids: From solution to ionogel based devices. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Cruz H, Jordão N, Santiago S, Gago S, Villabona M, Hernando J, Guirado G, Branco LC. Photo‐electrochromic salt composed by viologen cation and diarylethene anion derivatives. ELECTROCHEMICAL SCIENCE ADVANCES 2022. [DOI: 10.1002/elsa.202100022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Hugo Cruz
- Departamento de Química LAQV‐REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa Caparica Portugal
| | - Noemi Jordão
- Departamento de Química LAQV‐REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa Caparica Portugal
| | - Sara Santiago
- Departament de Química Universitat Autònoma de Barcelona Bellaterra Spain
| | - Sandra Gago
- Departamento de Química LAQV‐REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa Caparica Portugal
| | - Marc Villabona
- Departament de Química Universitat Autònoma de Barcelona Bellaterra Spain
| | - Jordi Hernando
- Departament de Química Universitat Autònoma de Barcelona Bellaterra Spain
| | - Gonzalo Guirado
- Departament de Química Universitat Autònoma de Barcelona Bellaterra Spain
| | - Luís C. Branco
- Departamento de Química LAQV‐REQUIMTE Faculdade de Ciências e Tecnologia Universidade NOVA de Lisboa Caparica Portugal
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Baggi N, Léaustic A, Groni S, Anxolabéhère-Mallart E, Guillot R, Métivier R, Maurel F, Yu P. A Photo- and Redox-Driven Two-Directional Terthiazole-Based Switch: A Combined Experimental and Computational Investigation. Chemistry 2021; 27:12866-12876. [PMID: 34213798 DOI: 10.1002/chem.202101945] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Indexed: 01/14/2023]
Abstract
Terthiazoles with redox-active substituents like an N-methyl pyridinium group and ferrocene have been synthesized and their photo- and electro-chromic behaviors were investigated. The presence of two lateral N-methyl pyridinium substituents in the structure of terthiazole proved to be effective in inducing not only the reductive ring-closure of the terthiazole core but also its oxidative ring-opening reaction, leading to the first terarylene-based switch able to fully operate both photochemically and electrochemically. Moreover, the large increase in the redox potential between its open and closed form (700 mV) means that a part of the photon energy necessary to trigger the cyclization is stored in the form of chemical potential available for other works. Introduction of a second redox-active unit such as ferrocene onto the central thiazolyl moiety is found to inhibit the photochromism of the switch but not its redox switchability, which, instead, got improved for the ring-opening reaction via the redox properties of the ferrocenyl unit. The optical and redox properties of the switch in its different oxidation states are analyzed with the aid of DFT calculations in order to rationalize different switching processes.
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Affiliation(s)
- Nicolò Baggi
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405, Orsay, France
| | - Anne Léaustic
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405, Orsay, France
| | - Sihem Groni
- Université de Paris, Laboratoire d'Electrochimie Moléculaire, CNRS, 75013, Paris, France
| | | | - Régis Guillot
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405, Orsay, France
| | - Rémi Métivier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190, Gif-sur-Yvette, France
| | | | - Pei Yu
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405, Orsay, France
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Photophysical properties of methyl ketone based multi-responsive electrochromic materials: A theoretical investigation. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zhang ZX, Wang PX, Bai FQ, Kong CP, Zhang HX. Theoretical analysis of electrochromism under redox of bis(3-thienyl)/(2-thienyl)hexafluorocyclopentene: effects of charged and substituted systems. Phys Chem Chem Phys 2017; 19:9281-9291. [PMID: 28322392 DOI: 10.1039/c7cp00262a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochromism with the ring-closing or ring-opening isomerization of substituted and unsubstituted bis(3-thienyl)/(2-thienyl)hexafluorocyclopentene is discussed using the DFT method. In the neutral ground state, bond making and breaking between two reactive C atoms on thienyls are thermodynamically forbidden. Under redox conditions, the gain or loss of electrons can have a significant effect on the frontier molecular orbital distribution of both open- and closed-ring isomers, particularly in reactive sites. Corresponding structural changes show a trend toward isomerization. The reaction energy barrier shows greater reduction for dication than monocation and even becomes barrierless for dianion. During the isomerization in different states, the conjugated system switches distinctively, which is attributed to the special redistribution of molecular orbitals and spin population in each state. In monocation and monoanion, for the involvement of a single electron, isomerization is inclined to proceed sequentially between right and left thienyls, whereas it becomes synchronous in dication. The direction depends on the stabilization achieved by the formation of a global conjugated system and more average spin population on the molecule. The effect of substituents on thienyls is demonstrated in the promotion of the extent of conjugation and the determination of the spin population level on the reactive C atoms. Moreover, according to their electron-donating and withdrawing abilities, they can kinetically support or suppress the electron transfer pattern in the process from isomer to transition state, which leads to the control of reaction efficiency.
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Affiliation(s)
- Zhi-Xiang Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jinlin University, Changchun 130023, People's Republic of China.
| | - Pi-Xia Wang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jinlin University, Changchun 130023, People's Republic of China.
| | - Fu-Quan Bai
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jinlin University, Changchun 130023, People's Republic of China.
| | - Chui-Peng Kong
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jinlin University, Changchun 130023, People's Republic of China.
| | - Hong-Xing Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jinlin University, Changchun 130023, People's Republic of China.
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