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Belova AS, Khchoyan AG, Il’ina TM, Kononevich YN, Ionov DS, Sazhnikov VA, Khanin DA, Nikiforova GG, Vasil’ev VG, Muzafarov AM. Polydimethylsiloxanes with Grafted Dibenzoylmethanatoboron Difluoride: Synthesis and Properties. Polymers (Basel) 2022; 14:polym14235075. [PMID: 36501470 PMCID: PMC9740564 DOI: 10.3390/polym14235075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/24/2022] Open
Abstract
A method for the preparation of polydimethylsiloxanes with grafted methoxy-substituted dibenzoylmethanatoboron difluoride has been described. The structures of prepared polymers were confirmed using NMR, IR spectroscopy and gel permeation chromatography methods. Their thermal properties were investigated using thermal gravimetric analysis, differential scanning calorimetry and thermomechanical analysis. The prepared polymers had good thermal (Td5% up to 393 °C) and thermo-oxidative (Td5% = 413 °C) stability. The polymers started to transit in a viscous flow state at about 40 °C (for 3 a) and at about 20 °C (for 3 b). The viscoelastic characteristics of prepared polymers were determined in the sinusoidal oscillating vibrations mode. It was shown that the studied polymers at low frequencies at room temperature are viscoelastic fluids (G′ < G″). Increasing the frequency led to inversion (crossover) of dependences G′ and G″, which indicated the transition of polymers from viscous to elastomeric behavior characteristics, and the beginning of the formation of a physical network. Optical properties were studied using electron absorption, steady-state and time-resolved fluorescence spectroscopy. It was shown that intramolecular H-dimers exist in the ground state. The polymers studied had a bright fluorescence in the solution and in the solid state, consisting of bands of monomer and excimer emission. Thermally-activated delayed fluorescence was observed in the solution and the solid state. The prepared polymers possess intriguing properties that make them useful as optical materials, sensors or imaging agents.
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Affiliation(s)
- Anastasia S. Belova
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
| | - Arevik G. Khchoyan
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
- Faculty of Chemical-Pharmaceutical Technologies and Biomedical Preparations, D. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Tatiana M. Il’ina
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
- Faculty of Technology of Inorganic Substances and High-Temperature Materials, D. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia
| | - Yuriy N. Kononevich
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
- Correspondence:
| | - Dmitry S. Ionov
- Photochemistry Center, FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 1119421 Moscow, Russia
| | - Viacheslav A. Sazhnikov
- Photochemistry Center, FSRC “Crystallography and Photonics” of Russian Academy of Sciences, 1119421 Moscow, Russia
| | - Dmitry A. Khanin
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
| | - Galina G. Nikiforova
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
| | - Viktor G. Vasil’ev
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
| | - Aziz M. Muzafarov
- A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, 119991 Moscow, Russia
- N.S. Enikolopov Institute of Synthetic Polymeric Materials of Russian Academy of Sciences, 117393 Moscow, Russia
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2
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Khrebtov AA, Fedorenko EV, Reutov VA, Mirochnik AG, Lim LA. Self-Absorption Effect in Polymer Films Doped with Difluoroboron β-Diketonates. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422080118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Irii S, Ogaki T, Miyashita H, Nobori K, Ozawa Y, Abe M, Sato H, Ohta E, Matsui Y, Ikeda H. Remarkable Piezofluorochromism of an Organoboron Complex Containing [2.2]Paracyclophane. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Katsumi S, Saigusa M, Ito F. Molecular Aggregation Dynamics via a Liquid-like Cluster Intermediate during Heterogeneous Evaporation as Revealed by Hyperspectral Camera Fluorescence Imaging. J Phys Chem B 2022; 126:976-984. [PMID: 35077181 DOI: 10.1021/acs.jpcb.1c09507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A hyperspectral camera (HSC) is a camera with great potential to obtain spectral information at each pixel, together with spatial imaging. HSC fluorescence imaging enables the molecular aggregation dynamics of the evaporative crystallization process to be followed in real-time. The key intermediate liquid-like cluster state for the two-step nucleation mechanism is visualized by the fluorescence color changes of mechanochromic luminescent dibenzoylmethanatoboron difluoride derivatives. Three types of emissive species (Crystal, BG-aggregates, and Amorphous) are generated from monomers in solution (low order and density) via liquid-like cluster (high density and low order) during solvent evaporation. These emissive species have partially different aggregated states based on fluorescence decay and fluorescence excitation spectral measurements. In terms of crystallization dynamics, our results indicate that it is important not only to generate supersaturated states but also to maintain the survival time of the liquid-like cluster. Moreover, we demonstrate that HSC fluorescence imaging can be a powerful tool for visualizing heterogeneous molecular aggregation processes.
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Affiliation(s)
- Shiho Katsumi
- Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda 386-8567, Japan
| | - Mai Saigusa
- Department of Chemistry, Institute of Education, Shinshu University, 6-ro, Nishinagano, Nagano 380-8544, Japan
| | - Fuyuki Ito
- Department of Chemistry, Institute of Education, Shinshu University, 6-ro, Nishinagano, Nagano 380-8544, Japan
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5
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Kononevich YN, Belova AS, Ionov DS, Sazhnikov VA, Pakhomov AA, Alfimov MV, Muzafarov AM. Novel DBMBF 2-BODIPY dyads connected via a flexible linker: synthesis and photophysical properties. NEW J CHEM 2022. [DOI: 10.1039/d2nj01786e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Novel BODIPY and DBMBF2 dyads connected via a flexible trisiloxane linker were synthesized and their photophysical properties were investigated.
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Affiliation(s)
- Yuriy N. Kononevich
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Anastasia S. Belova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russian Federation
| | - Dmitry S. Ionov
- Photochemistry Center, FSRC “Crystallography and Photonics”, Russian Academy of Sciences, 119421 Moscow, Russian Federation
| | - Viacheslav A. Sazhnikov
- Photochemistry Center, FSRC “Crystallography and Photonics”, Russian Academy of Sciences, 119421 Moscow, Russian Federation
- Moscow Institute of Physics and Technology (State University), 141707 Dolgoprudny, Russian Federation
| | - Alexey A. Pakhomov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russian Federation
| | - Mikhail V. Alfimov
- Photochemistry Center, FSRC “Crystallography and Photonics”, Russian Academy of Sciences, 119421 Moscow, Russian Federation
- Moscow Institute of Physics and Technology (State University), 141707 Dolgoprudny, Russian Federation
| | - Aziz M. Muzafarov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russian Federation
- N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russian Federation
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6
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7
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Photochemical Methods for the Real-Time Observation of Phase Transition Processes upon Crystallization. Symmetry (Basel) 2020. [DOI: 10.3390/sym12101726] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
We have used the fluorescence detection of phase transformation dynamics of organic compounds by photochemical methods to observe a real-time symmetry breaking process. The organic fluorescent molecules vary the fluorescence spectra depending on molecular aggregated states, implying fluorescence spectroscopy can be applied to probe the evolution of the molecular-assembling process. As an example, the amorphous-to-crystal phase transformation and crystallization with symmetry breaking at droplet during the solvent evaporation of mechanofluorochromic molecules are represented in this review.
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8
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Kononevich YN, Belova AS, Sazhnikov VA, Safonov AA, Ionov DS, Volodin AD, Korlyukov AA, Muzafarov AM. Synthesis and properties of new dibenzoylmethanatoboron difluoride dyads connected by flexible siloxane linkers. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152176] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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9
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Kononevich YN, Temnikov MN, Korlyukov AA, Volodin AD, Dorovatovskii PV, Sazhnikov VA, Safonov AA, Ionov DS, Ivanov AA, Surin NM, Svidchenko EA, Muzafarov AM. Tetrahedral Silicon-Centered Dibenzoylmethanatoboron Difluorides: Synthesis, Crystal Structure, and Photophysical Behavior in Solution and the Solid State. Chempluschem 2020; 85:1111-1119. [PMID: 32237221 DOI: 10.1002/cplu.201900732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 02/17/2020] [Accepted: 12/16/2019] [Indexed: 11/05/2022]
Abstract
Four tetrahedral silicon-centered derivatives of dibenzoylmethanatoboron difluoride (DBMBF2 ) were synthesized and characterized. Their structural and optical features both in solution and the solid state were investigated by using X-ray crystallography, steady-state and time-dependent spectroscopy, and DFT-based calculations. In dilute solutions, the molar absorption coefficient increases from 40500 to 175200 M-1 cm-1 as the number of DBMBF2 fragments in a molecule increases from one to four, while, in contrast, the nonradiative rate constant of fluorescence decay decreases from 0.49 to 0.34. In the solid state, absorption and emission spectra depend on the degree of crystallinity and microcrystal size. The tris-DBMBF2 derivative forms fully overlapping dimeric structures that exhibit excimer-like fluorescence, which is accurately predicted by the quantum-chemical calculations. The mono-DBMBF2 derivative exhibits fully reverse mechanofluorochromic behavior.
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Affiliation(s)
- Yuriy N Kononevich
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991, Moscow, Russian Federation
| | - Maxim N Temnikov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991, Moscow, Russian Federation
| | - Alexander A Korlyukov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991, Moscow, Russian Federation.,Pirogov Russian National Research Medical University, 117997, Moscow, Russian Federation
| | - Alexander D Volodin
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991, Moscow, Russian Federation
| | | | - Viacheslav A Sazhnikov
- Photochemistry Center FSRC "Crystallography and Photonics", Russian Academy of Sciences, 1119421, Moscow, Russian Federation.,Moscow Institute of Physics and Technology (State University), 141707, Dolgoprudny, Russian Federation
| | - Andrey A Safonov
- Photochemistry Center FSRC "Crystallography and Photonics", Russian Academy of Sciences, 1119421, Moscow, Russian Federation
| | - Dmitriy S Ionov
- Photochemistry Center FSRC "Crystallography and Photonics", Russian Academy of Sciences, 1119421, Moscow, Russian Federation
| | - Anatoly A Ivanov
- Photochemistry Center FSRC "Crystallography and Photonics", Russian Academy of Sciences, 1119421, Moscow, Russian Federation
| | - Nikolay M Surin
- N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393, Moscow, Russian Federation
| | - Evgeniya A Svidchenko
- N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393, Moscow, Russian Federation
| | - Aziz M Muzafarov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991, Moscow, Russian Federation.,N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393, Moscow, Russian Federation
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10
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Hirai Y, Wrona-Piotrowicz A, Zakrzewski J, Brosseau A, Guillot R, Métivier R, Allain C. Mechanofluorochromism of pyrene-derived amidophosphonates. Photochem Photobiol Sci 2020; 19:229-234. [PMID: 31971525 DOI: 10.1039/c9pp00457b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aiming to develop a library of organic mechanofluorochromic (MFC) materials, solid-state emission properties of pyrene-derivatives with amidophosphonate groups (diethyl 1-(pyrene-1-carboxamido)alkylphosphonates, alkyl: methyl, isopropyl, phenyl) were investigated. All of these compounds were found to show strong blue fluorescence, and blue-to-green emission shift was identified upon grinding. Monomer and several excimer emissive species were identified by steady-state and time-resolved fluorescence investigations. The characteristic green-to-blue thermal back reaction was observed even at room temperature without additives, which would be related to the flexibility of side groups for molecular rearrangement. We here demonstrated that the pyrene-derived compounds can be attractive platforms to host MFC properties.
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Affiliation(s)
- Yuichi Hirai
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 94235 Cachan, France.
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11
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12
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Fedorenko EV, Mirochnik AG, Gerasimenko AV. o-Hydroxydibenzoylmethanate of boron difluoride: A complex with multi-stimuli-responsive emission effects. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 223:117367. [PMID: 31323495 DOI: 10.1016/j.saa.2019.117367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 07/04/2019] [Accepted: 07/07/2019] [Indexed: 06/10/2023]
Abstract
The structural, luminescence and chemosensor properties of boron difluoride o-hydroxydibenzoylmethanate (1) have been investigated. In the concentrated solution, PE (polyethylene) matrix, and crystals of 1, one observes the formation of J-aggregates. The crystal structure of 1 is in compliance with that of J-aggregates of the "brickwork type" consisting of dimers that comprise excimer traps. In time-resolved luminescence spectra of 1 in PE films and crystals, one observes luminescence bands corresponding to the luminescence of excimer J-aggregates. At application of external stimuli on the crystals of 1 (heating, grinding), one observes changes in the luminescence spectrum caused by redistribution of intensities of excimer and J-aggregate bands. 1 could act as an optic chemosensor for probing amines vapors with different response rates and different sensitivities controlled by their morphologies.
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Affiliation(s)
- Elena V Fedorenko
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russian Federation.
| | - Anatolii G Mirochnik
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russian Federation
| | - Andrey V Gerasimenko
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, Prosp. 100-letya Vladivostoka, Vladivostok 690022, Russian Federation
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13
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Kononevich YN, Sazhnikov VA, Belova AS, Korlyukov AA, Volodin AD, Safonov AA, Yurasik GA, Ionov DS, Muzafarov AM. Turn-on exciplex fluorescence induced by complexation of nonfluorescent pentafluorinated dibenzoylmethanatoboron difluoride with benzene and its derivatives. NEW J CHEM 2019. [DOI: 10.1039/c9nj03722e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A new pentafluorinated derivative of (dibenzoylmethanato)boron difluoride (5F-DBMBF2) was synthesized and studied as an “off–on” fluorescent probe for benzene derivatives with a reversible detection capability.
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Affiliation(s)
- Yuriy N. Kononevich
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Viacheslav A. Sazhnikov
- Photochemistry Center
- FSRC “Crystallography and Photonics”, Russian Academy of Sciences
- 119421 Moscow
- Russian Federation
- Moscow Institute of Physics and Technology (State University)
| | - Anastasia S. Belova
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Alexander A. Korlyukov
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
- Pirogov Russian National Research Medical University
| | - Alexander D. Volodin
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Andrey A. Safonov
- Photochemistry Center
- FSRC “Crystallography and Photonics”, Russian Academy of Sciences
- 119421 Moscow
- Russian Federation
| | - Georgy A. Yurasik
- Photochemistry Center
- FSRC “Crystallography and Photonics”, Russian Academy of Sciences
- 119421 Moscow
- Russian Federation
| | - Dmitriy S. Ionov
- Photochemistry Center
- FSRC “Crystallography and Photonics”, Russian Academy of Sciences
- 119421 Moscow
- Russian Federation
| | - Aziz M. Muzafarov
- A.N. Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
- N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences
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14
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Wilbraham L, Louis M, Alberga D, Brosseau A, Guillot R, Ito F, Labat F, Métivier R, Allain C, Ciofini I. Revealing the Origins of Mechanically Induced Fluorescence Changes in Organic Molecular Crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1800817. [PMID: 29845662 DOI: 10.1002/adma.201800817] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 03/23/2018] [Indexed: 06/08/2023]
Abstract
Mechanofluorochromic molecular materials display a change in fluorescence color through mechanical stress. Complex structure-property relationships in both the crystalline and amorphous phases of these materials govern both the presence and strength of this behavior, which is usually deemed the result of a mechanically induced phase transition. However, the precise nature of the emitting species in each phase is often a matter of speculation, resulting from experimental data that are difficult to interpret, and a lack of an acceptable theoretical model capable of capturing complex environmental effects. With a combined strategy using sophisticated experimental techniques and a new theoretical approach, here the varied mechanofluorochromic behavior of a series of difluoroboron diketonates is shown to be driven by the formation of low-energy exciton traps in the amorphous phase, with a limited number of traps giving rise to the full change in fluorescence color. The results highlight intrinsic structural links between crystalline and amorphous phases, and how these may be exploited for further development of powerful mechanofluorochromic assemblies, in line with modern crystal engineering approaches.
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Affiliation(s)
- Liam Wilbraham
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
| | - Marine Louis
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Domenico Alberga
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
| | - Arnaud Brosseau
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Régis Guillot
- ICMMO, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 91405, Orsay, France
| | - Fuyuki Ito
- Department of Chemistry, Institute of Education, Shinshu University, Nagano, 380-8455, Japan
| | - Frédéric Labat
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
| | - Rémi Métivier
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Clémence Allain
- PPSM, ENS Paris-Saclay, CNRS, Université Paris-Saclay, 94235, Cachan, France
| | - Ilaria Ciofini
- Institut de Recherche de Chimie Paris IRCP, PSL Research University, CNRS - Chimie ParisTech, 11 rue Pierre et Marie Curie, F-75005, Paris, France
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15
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Tikhonov SA, Vovna VI. Boron chelate complexes: X-ray and UV photoelectron spectra and electronic structure. Russ Chem Bull 2018. [DOI: 10.1007/s11172-018-2196-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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16
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Sharber SA, Shih KC, Mann A, Frausto F, Haas TE, Nieh MP, Thomas SW. Reversible mechanofluorochromism of aniline-terminated phenylene ethynylenes. Chem Sci 2018; 9:5415-5426. [PMID: 30009013 PMCID: PMC6009520 DOI: 10.1039/c8sc00980e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 05/23/2018] [Indexed: 01/24/2023] Open
Abstract
Seven three-ring phenylene-ethynylene (PE) structural analogs, differing only in the lengths of alkyl chains on terminal aniline substituents, show 50-62 nm bathochromic shifts in emission maxima in response to mechanical force (mechanofluorochromism, MC). These shifts are fully reversible with heat or solvent fuming. Shearing of these solids yields a transition from green-emitting crystalline phases to orange-emitting amorphous phases as established by differential scanning calorimetry and X-ray diffraction. Molecules with shorter alkyl chain lengths required higher temperatures to recover the hypsochromically shifted crystalline phases after grinding, while the recovery with chain lengths longer than butyl occurred at room temperature. In addition to this structure-dependent thermochromism, these compounds retain their MC properties in polymer hosts to various extents. The crystalline phases of these materials have PE chromophores that are twisted due to non-covalent perfluoroarene-arene (ArF-ArH) interactions involving perfluorophenyl pendants and the terminal rings of the PE chromophore, resulting in interrupted conjugation and an absence of chromophore aggregation. The MC behavior of an analog without the perfluoroarene rings is severely attenuated. This work demonstrates the general utility of twisted PEs as stimuli-responsive moieties and reveals clear structure-property relationships regarding the effects of alkyl chain length on these materials.
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Affiliation(s)
- Seth A Sharber
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Kuo-Chih Shih
- Department of Chemical & Biomolecular Engineering , University of Connecticut , 97 North Eagleville Road, Storrs , CT 06269 , USA
| | - Arielle Mann
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Fanny Frausto
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Terry E Haas
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
| | - Mu-Ping Nieh
- Department of Chemical & Biomolecular Engineering , University of Connecticut , 97 North Eagleville Road, Storrs , CT 06269 , USA
| | - Samuel W Thomas
- Department of Chemistry , Tufts University , 62 Talbot Avenue , Medford , MA 02155 , USA .
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17
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Louis M, Guillot R, Métivier R, Allain C. β-Diketone derivatives: influence of the chelating group on the photophysical and mechanofluorochromic properties. Photochem Photobiol Sci 2018; 17:822-828. [PMID: 29796495 DOI: 10.1039/c8pp00070k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A diphenyl-boron β-diketonate complex was synthesized. Its photophysical properties were studied in solution and in the solid-state, and compared to those of its parent diketone and the corresponding difluoro-boron complex. TD-DFT calculations show that the molecular orbitals involved in the first Franck-Condon transition are very different for the three compounds studied. The difluoro-boron complex is strongly fluorescent in solution, and remains fluorescent in the solid-state. The free diketone turns to be very weakly fluorescent in solution and displays significant Aggregation Induced Enhanced Emission (AIEE) in the crystalline state, which can be explained by a rigidification of the molecule, while the diphenyl-boron complex is weakly fluorescent in solution as well as in the solid-state. For the free diketone and the difluoro-boron complex a mechanofluorochromic response is observed upon grinding the crystalline powder in a mortar, while for the diphenyl-boron complex no fluorescence emission change is detected under these conditions. Overall, this study shows that the nature of the chelating group has a crucial influence on the photophysical and mechanofluorochromic properties of β-diketonate complexes, leading to a wide variety of behaviors within the closely related structures of such derivatives.
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Affiliation(s)
- Marine Louis
- PPSM, ENS Cachan, CNRS, Université Paris-Saclay, 94235 Cachan, France..
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18
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Tikhonov SA, Vovna VI, Osmushko IS, Fedorenko EV, Mirochnik AG. Boron difluoride dibenzoylmethane derivatives: Electronic structure and luminescence. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:563-570. [PMID: 28866412 DOI: 10.1016/j.saa.2017.08.059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/06/2017] [Accepted: 08/19/2017] [Indexed: 06/07/2023]
Abstract
Electronic structure and optical properties of boron difluoride dibenzoylmethanate and four of its derivatives have been studied by X-ray photoelectron spectroscopy, absorption and luminescence spectroscopy and quantum chemistry (DFT, TDDFT). The relative quantum luminescence yields have been revealed to correlate with charge transfers of HOMO-LUMO transitions, energy barriers of aromatic substituents rotation and the lifetime of excited states in the investigated complexes. The bathochromic shift of intensive bands in the optical spectra has been observed to occur when the functional groups are introduced into p-positions of phenyl cycles due to destabilizing HOMO levels. Calculated energy intervals between electronic levels correlate well with XPS spectra structure of valence and core electrons.
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Affiliation(s)
| | | | | | - Elena V Fedorenko
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok 690022, Russia
| | - Anatoliy G Mirochnik
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok 690022, Russia
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Ohtani S, Gon M, Tanaka K, Chujo Y. A Flexible, Fused, Azomethine-Boron Complex: Thermochromic Luminescence and Thermosalient Behavior in Structural Transitions between Crystalline Polymorphs. Chemistry 2017. [DOI: 10.1002/chem.201702309] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Shunsuke Ohtani
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
| | - Masayuki Gon
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry; Graduate School of Engineering; Kyoto University Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
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Ito F, Kikuchi C. Concentration-Dependent Fluorescence Color Tuning of the Difluoroboron Avobenzone Complex in Polymer Films. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Fuyuki Ito
- Institution of Education, Shinshu University, 6-ro, Nishinagano, Nagano 380-8544
| | - Chika Kikuchi
- Institution of Education, Shinshu University, 6-ro, Nishinagano, Nagano 380-8544
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Sakai A, Ohta E, Matsui Y, Tsuzuki S, Ikeda H. Room-Temperature Phosphorescence of Crystalline Metal-Free Organoboron Complex. Chemphyschem 2016; 17:4033-4036. [DOI: 10.1002/cphc.201600779] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Atsushi Sakai
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; Sakai Osaka 599-8531 Japan
| | - Eisuke Ohta
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; Sakai Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices; Osaka Prefecture University; Sakai Osaka 599-8531 Japan
| | - Yasunori Matsui
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; Sakai Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices; Osaka Prefecture University; Sakai Osaka 599-8531 Japan
| | - Seiji Tsuzuki
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat); National Institute of Advanced Industrial Science and Technology (AIST); Tsukuba Ibaraki 305-8568 Japan
| | - Hiroshi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering; Osaka Prefecture University; Sakai Osaka 599-8531 Japan
- The Research Institute for Molecular Electronic Devices; Osaka Prefecture University; Sakai Osaka 599-8531 Japan
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Tikhonov SA, Vovna VI, Gelfand NA, Osmushko IS, Fedorenko EV, Mirochnik AG. Electronic Structure and Optical Properties of Boron Difluoride Dibenzoylmethane Derivatives. J Phys Chem A 2016; 120:7361-9. [DOI: 10.1021/acs.jpca.6b07242] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | - Elena V. Fedorenko
- Far Eastern Federal University, Vladivostok 690950, Russia
- Institute
of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok 690022, Russia
| | - Anatoliy G. Mirochnik
- Institute
of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok 690022, Russia
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