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Yang L, Song Y, Fan G, Zhang X, Wang Y. Effect of tunable π bridge on two-photon absorption property and intramolecular charge transfer process of polycyclic aromatic hydrocarbons. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 259:119830. [PMID: 33971443 DOI: 10.1016/j.saa.2021.119830] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/30/2021] [Accepted: 04/11/2021] [Indexed: 06/12/2023]
Abstract
The influences of the conjugation effect on the charge transfer and nonlinear optical (NLO) properties of polycyclic aromatic hydrocarbons (PAHs) are comprehensively investigated at the microscopic molecular level. We found that the conjugation effect of π bridge is negatively correlated with molecular planarity, excitation energy, two-photon absorption (TPA) cross-section, and the second hyperpolarizability. For the first time, the charge transfer matrix (CTM) is applied to the molecular two-photon transition process. Combining the charge difference density (CDD) diagram with CTM heat map to visually quantitative investigate the characteristics of excited states, the charge transfer path and transfer amount between atoms. During the two-photon transition of all molecules, the electronic excited state is locally excited. Compared with the first process, the range of intramolecular charge transfer in the second process of the two-photon transition is expanded. Comprehensive results prove that the π bridge with large conjugation effect distorts the molecular structure, which is not conducive to the intramolecular charge transfer. Therefore, the molecule DBP-1 with a carbon-carbon double bond as the π bridge has the largest transition dipole moments, TPA cross-section, and second static hyperpolarizability. Our research method can provide effective guidance for the design and optimization of nonlinear organic conjugated molecular materials.
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Affiliation(s)
- Linpo Yang
- Department of Physics, Harbin Institute of Technology, Harbin 150001, China
| | - Yinglin Song
- Department of Physics, Harbin Institute of Technology, Harbin 150001, China; School of Physical Science and Technology, Soochow University, Suzhou 215006, China.
| | - Guanghua Fan
- Department of Optoelectronic Science, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Xueru Zhang
- Department of Physics, Harbin Institute of Technology, Harbin 150001, China
| | - Yuxiao Wang
- Department of Physics, Harbin Institute of Technology, Harbin 150001, China
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Rabouel I, Richy N, Amar A, Boucekkine A, Roisnel T, Mongin O, Humphrey MG, Paul F. 1,3,5-Triaryl-1,3,5-Triazinane-2,4,6-Trithiones: Synthesis, Electronic Structure and Linear Optical Properties. Molecules 2020; 25:molecules25225475. [PMID: 33238454 PMCID: PMC7700228 DOI: 10.3390/molecules25225475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/02/2022] Open
Abstract
The synthesis of four new 1,3,5-triaryl-1,3,5-triazinane-2,4,6-trithione derivatives (thioisocyanurates) and two new partially thionated analogues from the corresponding 1,3,5-triaryl-1,3,5-triazinane-2,4,6-triones (isocyanurates) is reported, together with their spectroscopic properties. DFT calculations and comparison with the corresponding isocyanurates evidence the impact of the oxygen-for-sulfur replacement on the electronic structure and linear optical properties of these heterocycles. A bathochromic shift of the absorption bands and more efficient quenching of the fluorescence was observed.
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Affiliation(s)
- Ismaël Rabouel
- ISCR (Institut des Sciences Chimiques de Rennes), Université de Rennes, CNRS, UMR 6226, 35000 Rennes, France; (I.R.); (N.R.); (T.R.); (O.M.)
| | - Nicolas Richy
- ISCR (Institut des Sciences Chimiques de Rennes), Université de Rennes, CNRS, UMR 6226, 35000 Rennes, France; (I.R.); (N.R.); (T.R.); (O.M.)
| | - Anissa Amar
- Département de Chimie, Faculté des Sciences, Université Mouloud Mammeri, 15000 Tizi-Ouzou, Algeria;
- Faculté de Chimie, Université des Sciences et de la Technologie Houari-Boumediene, 16111 Bab-Ezzouar, Algeria
| | - Abdou Boucekkine
- ISCR (Institut des Sciences Chimiques de Rennes), Université de Rennes, CNRS, UMR 6226, 35000 Rennes, France; (I.R.); (N.R.); (T.R.); (O.M.)
- Correspondence: (A.B.); (M.G.H.); (F.P.); Tel.: +33-02-23-23-59-62 (F.P.)
| | - Thierry Roisnel
- ISCR (Institut des Sciences Chimiques de Rennes), Université de Rennes, CNRS, UMR 6226, 35000 Rennes, France; (I.R.); (N.R.); (T.R.); (O.M.)
| | - Olivier Mongin
- ISCR (Institut des Sciences Chimiques de Rennes), Université de Rennes, CNRS, UMR 6226, 35000 Rennes, France; (I.R.); (N.R.); (T.R.); (O.M.)
| | - Mark G. Humphrey
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
- Correspondence: (A.B.); (M.G.H.); (F.P.); Tel.: +33-02-23-23-59-62 (F.P.)
| | - Frédéric Paul
- ISCR (Institut des Sciences Chimiques de Rennes), Université de Rennes, CNRS, UMR 6226, 35000 Rennes, France; (I.R.); (N.R.); (T.R.); (O.M.)
- Correspondence: (A.B.); (M.G.H.); (F.P.); Tel.: +33-02-23-23-59-62 (F.P.)
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Dudek M, Tarnowicz-Staniak N, Deiana M, Pokładek Z, Samoć M, Matczyszyn K. Two-photon absorption and two-photon-induced isomerization of azobenzene compounds. RSC Adv 2020; 10:40489-40507. [PMID: 35520821 PMCID: PMC9057575 DOI: 10.1039/d0ra07693g] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/18/2020] [Indexed: 01/05/2023] Open
Abstract
The process of two-photon-induced isomerization occurring in various organic molecules, among which azobenzene derivatives hold a prominent position, offers a wide range of functionalities, which can be used in both material and life sciences. This review provides a comprehensive description of nonlinear optical (NLO) properties of azobenzene (AB) derivatives whose geometries can be switched through two-photon absorption (TPA). Employing the nonlinear excitation process allows for deeper penetration of light into the tissues and provides opportunities to regulate biological systems in a non-invasive manner. At the same time, the tight focus of the beam needed to induce nonlinear absorption helps to improve the spatial resolution of the photoinduced structures. Since near-infrared (NIR) wavelengths are employed, the lower photon energies compared to usual one-photon excitation (typically, the azobenzene geometry change from trans to cis form requires the use of UV photons) cause less damage to the biological samples. Herein, we present an overview of the strategies for optimizing azobenzene-based photoswitches for efficient two-photon excitation (TPE) and the potential applications of two-photon-induced isomerization of azobenzenes in biological systems: control of ion flow in ion channels or control of drug release, as well as in materials science, to fabricate data storage media, optical filters, diffraction elements etc., based on phenomena like photoinduced anisotropy, mass transport and phase transition. The extant challenges in the field of two-photon switchable azomolecules are discussed.
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Affiliation(s)
- Marta Dudek
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw Unviersity of Science and Technology Wyb. Wyspianskiego 27 50-370 Wroclaw Poland
| | - Nina Tarnowicz-Staniak
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw Unviersity of Science and Technology Wyb. Wyspianskiego 27 50-370 Wroclaw Poland
| | - Marco Deiana
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw Unviersity of Science and Technology Wyb. Wyspianskiego 27 50-370 Wroclaw Poland
| | - Ziemowit Pokładek
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw Unviersity of Science and Technology Wyb. Wyspianskiego 27 50-370 Wroclaw Poland
| | - Marek Samoć
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw Unviersity of Science and Technology Wyb. Wyspianskiego 27 50-370 Wroclaw Poland
| | - Katarzyna Matczyszyn
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw Unviersity of Science and Technology Wyb. Wyspianskiego 27 50-370 Wroclaw Poland
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