1
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Dereka B, Balanikas E, Rosspeintner A, Li Z, Liska R, Vauthey E. Excited-State Symmetry Breaking and Localization in a Noncentrosymmetric Electron Donor-Acceptor-Donor Molecule. J Phys Chem Lett 2024; 15:8280-8286. [PMID: 39143858 DOI: 10.1021/acs.jpclett.4c01694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
Electronic excitation in quadrupolar conjugated molecules rapidly localizes on a single electron donor-acceptor (DA) branch when in polar environments. The loss of center of inversion upon this excited-state symmetry breaking (ES-SB) can be monitored by exploiting the relaxation of the exclusion rules for IR and Raman vibrational transitions. Here, we compare ES-SB in a right-angled (1) and a centrosymmetric (2) DAD dyes using time-resolved IR spectroscopy. We show that the localization of the excitation can also be identified with the bent molecule 1. We find that contrary to dye 2, subpopulations with localized and delocalized excitation coexist for 1 in weak to medium polar solvents. This difference originates from the torsional disorder present in the excited state of 1 but not of 2. Additionally, irreversible localization in a bent molecule is shown to require higher solvent polarity than in a centrosymmetric one.
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Affiliation(s)
- Bogdan Dereka
- Department of Chemistry, University of Zurich, CH-8057 Zurich, Switzerland
| | - Evangelos Balanikas
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Zhiquan Li
- Institute of Applied Synthetic Chemistry, Division of Macromolecular Chemistry, Vienna University of Technology, Getreidemarkt 9/163/MC, 1060 Vienna, Austria
| | - Robert Liska
- Institute of Applied Synthetic Chemistry, Division of Macromolecular Chemistry, Vienna University of Technology, Getreidemarkt 9/163/MC, 1060 Vienna, Austria
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
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2
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Fureraj I, Wega J, Balanikas E, Puji Pamungkas KK, Sakai N, Matile S, Vauthey E. Excitation-Wavelength-Dependent Photophysics of a Torsionally Disordered Push-Pull Dye. J Phys Chem Lett 2024:7857-7862. [PMID: 39052969 DOI: 10.1021/acs.jpclett.4c01840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
The torsional disorder of conjugated dyes in the electronic ground state can lead to inhomogeneous broadening of the S1 ←S0 absorption band, allowing for the selective photoexcitation of molecules with different amounts of distortion. Here, we investigate how this affects electronic transitions to upper excited states. We show that torsion of a core-alkynylated push-pull dye can have opposite effects on the oscillator strength of its lowest-energy transitions. Consequently, photoselection of planar and twisted molecules can be achieved by exciting in distinct absorption bands. Whereas this has limited effect in liquids due to fast planarization of the excited molecules, it strongly affects the overall photophysics in a polymeric environment, where torsional motion is hindered, allowing for the photoselection of molecules with different fluorescence quantum yields and intersystem-crossing dynamics.
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Affiliation(s)
- Ina Fureraj
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Johannes Wega
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Evangelos Balanikas
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | | | - Naomi Sakai
- Department of Organic Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Stefan Matile
- Department of Organic Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
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3
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Pagano K, Kim JG, Luke J, Tan E, Stewart K, Sazanovich IV, Karras G, Gonev HI, Marsh AV, Kim NY, Kwon S, Kim YY, Alonso MI, Dörling B, Campoy-Quiles M, Parker AW, Clarke TM, Kim YH, Kim JS. Slow vibrational relaxation drives ultrafast formation of photoexcited polaron pair states in glycolated conjugated polymers. Nat Commun 2024; 15:6153. [PMID: 39039039 PMCID: PMC11263616 DOI: 10.1038/s41467-024-50530-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 07/13/2024] [Indexed: 07/24/2024] Open
Abstract
Glycol sidechains are often used to enhance the performance of organic photoconversion and electrochemical devices. Herein, we study their effects on electronic states and electronic properties. We find that polymer glycolation not only induces more disordered packing, but also results in a higher reorganisation energy due to more localised π-electron density. Transient absorption spectroscopy and femtosecond stimulated Raman spectroscopy are utilised to monitor the structural relaxation dynamics coupled to the excited state formation upon photoexcitation. Singlet excitons are initially formed, followed by polaron pair formation. The associated structural relaxation slows down in glycolated polymers (5 ps vs. 1.25 ps for alkylated), consistent with larger reorganisation energy. This slower vibrational relaxation is found to drive ultrafast formation of the polaron pair state (5 ps vs. 10 ps for alkylated). These results provide key experimental evidence demonstrating the impact of molecular structure on electronic state formation driven by strong vibrational coupling.
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Affiliation(s)
- Katia Pagano
- Department of Physics and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK
| | - Jin Gwan Kim
- Department of Chemistry and Research Institute of Molecular Alchemy (RIMA) Gyeongsang National University Jinju, Gyeongnam, 660-701, Republic of Korea
| | - Joel Luke
- Department of Physics and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK
| | - Ellasia Tan
- Department of Physics and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK
| | - Katherine Stewart
- Department of Physics and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK
| | - Igor V Sazanovich
- Central Laser Facility, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
| | - Gabriel Karras
- Central Laser Facility, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
| | - Hristo Ivov Gonev
- Department of Chemistry, University College London, Christopher Ingold Building, London, WC1H 0AJ, UK
| | - Adam V Marsh
- Physical Science and Engineering Division, KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Na Yeong Kim
- Department of Chemistry and Research Institute of Molecular Alchemy (RIMA) Gyeongsang National University Jinju, Gyeongnam, 660-701, Republic of Korea
| | - Sooncheol Kwon
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul, 04620, Republic of Korea
| | - Young Yong Kim
- Beamline Division, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea
| | - M Isabel Alonso
- Department of Nanostructured Materials, Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, E-08193, Bellaterra, Spain
| | - Bernhard Dörling
- Department of Nanostructured Materials, Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, E-08193, Bellaterra, Spain
| | - Mariano Campoy-Quiles
- Department of Nanostructured Materials, Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, E-08193, Bellaterra, Spain
| | - Anthony W Parker
- Central Laser Facility, Research Complex at Harwell, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
| | - Tracey M Clarke
- Department of Chemistry, University College London, Christopher Ingold Building, London, WC1H 0AJ, UK
| | - Yun-Hi Kim
- Department of Chemistry and Research Institute of Molecular Alchemy (RIMA) Gyeongsang National University Jinju, Gyeongnam, 660-701, Republic of Korea.
| | - Ji-Seon Kim
- Department of Physics and Centre for Processable Electronics, Imperial College London, London, SW7 2AZ, UK.
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4
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Sissaoui J, Budkina DS, Vauthey E. Torsional Disorder, Symmetry Breaking, and the Crystal Violet Shoulder Controversy. J Phys Chem Lett 2023:5602-5606. [PMID: 37307294 DOI: 10.1021/acs.jpclett.3c01038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The nature of the lowest-energy electronic absorption band of crystal violet (CV) and particularly the origin of its high-energy shoulder have been debated since the middle of the past century. The most recent studies invoke a splitting of the S1 state upon symmetry breaking induced by interactions with the solvent and/or the counterion. Using a combination of stationary and time-resolved polarized spectroscopy together with quantum-chemical calculations, we show that torsional disorder in the ground-state results in an inhomogeneous broadening of the absorption band of CV. The center of the band is mostly due to symmetric molecules with a degenerate S1 state, whereas the edges originate from transitions to the S1 and S2 states of distorted symmetry-broken molecules. Transient-absorption measurements with different excitation wavelengths reveal that these two groups of molecules interconvert rapidly in liquid but not in a rigid environment.
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Affiliation(s)
- Jihad Sissaoui
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Darya S Budkina
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, CH-1211 Geneva, Switzerland
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5
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Fureraj I, Budkina DS, Vauthey E. Torsional disorder and planarization dynamics: 9,10-bis(phenylethynyl)anthracene as a case study. Phys Chem Chem Phys 2022; 24:25979-25989. [PMID: 36263805 PMCID: PMC9627944 DOI: 10.1039/d2cp03909e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/04/2022] [Indexed: 06/14/2023]
Abstract
Conjugated molecules with phenylethynyl building blocks are usually characterised by torsional disorder at room temperature. They are much more rigid in the electronic excited state due to conjugation. As a consequence, the electronic absorption and emission spectra do not present a mirror-image relationship. Here, we investigate how torsional disorder affects the excited state dynamics of 9,10-bis(phenylethynyl)anthracene in solvents of different viscosities and in polymers, using both stationary and ultrafast electronic spectroscopies. Temperature-dependent measurements reveal inhomogeneous broadening of the absorption spectrum at room temperature. This is confirmed by ultrafast spectroscopic measurements at different excitation wavelengths. Red-edge irradiation excites planar molecules that return to the ground state without significant structural dynamics. In this case, however, re-equilibration of the torsional disorder in the ground state can be observed. Higher-energy irradiation excites torsionally disordered molecules, which then planarise, leading to important spectral dynamics. The latter is found to occur partially via viscosity-independent inertial motion, whereas it is purely diffusive in the ground state. This dissimilarity is explained in terms of the steepness of the potential along the torsional coordinate.
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Affiliation(s)
- Ina Fureraj
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Darya S Budkina
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland.
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland.
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6
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Álvarez-Conde J, Garzón-Ruiz A, Navarro A, Jiménez-Pulido SB, González-Rodríguez P, Cabanillas-González J, García-Frutos EM. The role of the diyne bond on the excited state deactivation of diyne-bridged 7-azaindoles in solution and solid state. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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7
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Lunzer M, Beckwith JS, Chalupa-Gantner F, Rosspeintner A, Licari G, Steiger W, Hametner C, Liska R, Fröhlich J, Vauthey E, Ovsianikov A, Holzer B. Beyond the Threshold: A Study of Chalcogenophene-Based Two-Photon Initiators. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:3042-3052. [PMID: 35431440 PMCID: PMC9009090 DOI: 10.1021/acs.chemmater.1c04002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/07/2022] [Indexed: 06/14/2023]
Abstract
A series of nine soluble, symmetric chalcogenophenes bearing hexyl-substituted triphenylamines, indolocarbazoles, or phenylcarbazoles was designed and synthesized as potential two-photon absorption (2PA) initiators. A detailed photophysical analysis of these molecules revealed good 2PA properties of the series and, in particular, a strong influence of selenium on the 2PA cross sections, rendering these materials especially promising new 2PA photoinitiators. Structuring and threshold tests proved the efficiency and broad spectral versatility of two selenium-containing lead compounds as well as their applicability in an acrylate resin formulation. A comparison with commercial photoinitiators Irg369 and BAPO as well as sensitizer ITX showed that the newly designed selenium-based materials TPA-S and TPA-BBS outperform these traditional initiators by far both in terms of reactivity and dose. Moreover, by increasing the ultralow concentration of TPA-BBS, a further reduction of the polymerization threshold can be achieved, revealing the great potential of this series for application in two-photon polymerization (2PP) systems where only low laser power is available.
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Affiliation(s)
- Markus Lunzer
- Institute
of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
- Institute
of Materials Science and Technology, TU
Wien, Getreidemarkt 9/308, 1060 Vienna, Austria
- UpNano
GmbH, Modecenterstraße
22/D36, 1030 Vienna, Austria
| | - Joseph S. Beckwith
- Department
of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | | | - Arnulf Rosspeintner
- Department
of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Giuseppe Licari
- Department
of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Wolfgang Steiger
- Institute
of Materials Science and Technology, TU
Wien, Getreidemarkt 9/308, 1060 Vienna, Austria
| | - Christian Hametner
- Institute
of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
| | - Robert Liska
- Institute
of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
| | - Johannes Fröhlich
- Institute
of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
| | - Eric Vauthey
- Department
of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Aleksandr Ovsianikov
- Institute
of Materials Science and Technology, TU
Wien, Getreidemarkt 9/308, 1060 Vienna, Austria
| | - Brigitte Holzer
- Institute
of Applied Synthetic Chemistry, TU Wien, Getreidemarkt 9/163, 1060 Vienna, Austria
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8
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Lin H, Wang J, Zhao J, Zhuang Y, Liu B, Zhu Y, Jia H, Wu K, Shen J, Fu X, Zhang X, Long J. Molecular Dipole-Induced Photoredox Catalysis for Hydrogen Evolution over Self-Assembled Naphthalimide Nanoribbons. Angew Chem Int Ed Engl 2022; 61:e202117645. [PMID: 35040544 DOI: 10.1002/anie.202117645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Indexed: 12/31/2022]
Abstract
D-π-A type 4-((9-phenylcarbazol-3-yl)ethynyl)-N-dodecyl-1,8-naphthalimide (CZNI) with a large dipole moment of 8.49 D and A-π-A type bis[(4,4'-1,8-naphthalimide)-N-dodecyl]ethyne (NINI) with a negligible dipole moment of 0.28 D, were smartly designed and synthesized to demonstrate the evidence of a molecular dipole as the dominant mechanism for controlling charge separation of organic semiconductors. In aqueous solution, these two novel naphthalimides can self-assemble to form nanoribbons (NRs) that present significantly different traces of exciton dissociation dynamics. Upon photoexcitation of NINI-NRs, no charge-separated excitons (CSEs) are formed due to the large exciton binding energy, accordingly there is no hydrogen evolution. On the contrary, in the photoexcited CZNI-NRs, the initial bound Frenkel excitons are dissociated to long-lived CSEs after undergoing ultrafast charge transfer within ca. 1.25 ps and charge separation within less than 5.0 ps. Finally, these free electrons were injected into Pt co-catalysts for reducing protons to H2 at a rate of ca. 417 μmol h-1 g-1 , correspondingly an apparent quantum efficiency of ca. 1.3 % can be achieved at 400 nm.
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Affiliation(s)
- Huan Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China.,Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, 999077, P. R. China.,Beijing Key Laboratory for Green Catalysis and Separation, Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing, 100124, P. R. China
| | - Junhui Wang
- State Key Laboratory of Molecular Reaction Dynamics, Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, P. R. China
| | - Jiwu Zhao
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Yan Zhuang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Bingqian Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Yujiao Zhu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, 999077, P. R. China
| | - Huaping Jia
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, 999077, P. R. China
| | - Kaifeng Wu
- State Key Laboratory of Molecular Reaction Dynamics, Dynamics Research Center for Energy and Environmental Materials, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, P. R. China
| | - Jinni Shen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xuming Zhang
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, 999077, P. R. China
| | - Jinlin Long
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
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9
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Long J, Lin H, Wang J, Zhao J, Zhuang Y, Liu B, Zhu Y, Jia H, Wu K, Shen J, Fu X, Zhang X. Molecular Dipole‐Induced Photoredox Catalysis for Hydrogen Evolution over Self‐assembled Naphthalimide Nanoribbons. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jinlin Long
- State Key Lab of Photocatalysis on Energy and Environmental College of Chemistry Xueyuan Road 2# 350108 Fuzhou CHINA
| | - Huan Lin
- Beijing University of Technology Department of Environmental Chemical Engineering CHINA
| | - Junhui Wang
- Dalian Institute of Chemical Physics State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials CHINA
| | - Jiwu Zhao
- Fuzhou University College of Chemistry CHINA
| | - Yan Zhuang
- Fuzhou University College of Chemistry CHINA
| | | | - Yujiao Zhu
- The Hong Kong Polytechnic University Department of Applied Physics CHINA
| | - Huaping Jia
- The Hong Kong Polytechnic University Department of Applied Physics CHINA
| | - Kaifeng Wu
- Dalian Institute of Chemical Physics State Key Laboratory of Molecular Reaction Dynamics and Dynamics Research Center for Energy and Environmental Materials CHINA
| | - Jinni Shen
- Fuzhou University College of Chemistry CHINA
| | - Xianzhi Fu
- Fuzhou University College of Chemistry CHINA
| | - Xuming Zhang
- The Hong Kong Polytechnic University Department of Applied Physics CHINA
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10
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Joseph K, Kushida S, Smarsly E, Ihiawakrim D, Thomas A, Paravicini‐Bagliani GL, Nagarajan K, Vergauwe R, Devaux E, Ersen O, Bunz UHF, Ebbesen TW. Supramolecular Assembly of Conjugated Polymers under Vibrational Strong Coupling. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kripa Joseph
- University of Strasbourg CNRS ISIS & icFRC 8 allée Gaspard Monge 67000 Strasbourg France
| | - Soh Kushida
- University of Strasbourg CNRS ISIS & icFRC 8 allée Gaspard Monge 67000 Strasbourg France
- Faculty of Pure and Applied Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba 305-8577 Japan
| | - Emanuel Smarsly
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg INF 270 69120 Heidelberg Germany
| | - Dris Ihiawakrim
- University of Strasbourg CNRS, IPCMS 23 rue du Loess 67034 Strasbourg France
| | - Anoop Thomas
- University of Strasbourg CNRS ISIS & icFRC 8 allée Gaspard Monge 67000 Strasbourg France
- Present address: Department of Inorganic and Physical Chemistry Indian Institute of Science Bengaluru 560012 Bengaluru India
| | | | - Kalaivanan Nagarajan
- University of Strasbourg CNRS ISIS & icFRC 8 allée Gaspard Monge 67000 Strasbourg France
| | - Robrecht Vergauwe
- University of Strasbourg CNRS ISIS & icFRC 8 allée Gaspard Monge 67000 Strasbourg France
| | - Eloise Devaux
- University of Strasbourg CNRS ISIS & icFRC 8 allée Gaspard Monge 67000 Strasbourg France
| | - Ovidiu Ersen
- University of Strasbourg CNRS, IPCMS 23 rue du Loess 67034 Strasbourg France
| | - Uwe H. F. Bunz
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg INF 270 69120 Heidelberg Germany
| | - Thomas W. Ebbesen
- University of Strasbourg CNRS ISIS & icFRC 8 allée Gaspard Monge 67000 Strasbourg France
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11
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Joseph K, Kushida S, Smarsly E, Ihiawakrim D, Thomas A, Paravicini-Bagliani GL, Nagarajan K, Vergauwe R, Devaux E, Ersen O, Bunz UHF, Ebbesen TW. Supramolecular Assembly of Conjugated Polymers under Vibrational Strong Coupling. Angew Chem Int Ed Engl 2021; 60:19665-19670. [PMID: 34255910 DOI: 10.1002/anie.202105840] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/04/2021] [Indexed: 01/09/2023]
Abstract
Strong coupling plays a significant role in influencing chemical reactions and tuning material properties by modifying the energy landscapes of the systems. Here we study the effect of vibrational strong coupling (VSC) on supramolecular organization. For this purpose, a rigid-rod conjugated polymer known to form gels was strongly coupled together with its solvent in a microfluidic IR Fabry-Perot cavity. Absorption and fluorescence studies indicate a large modification of the self-assembly under such cooperative VSC. Electron microscopy confirms that in this case, the supramolecular morphology is totally different from that observed in the absence of strong coupling. In addition, the self-assembly kinetics are altered and depend on the solvent vibration under VSC. The results are compared to kinetic isotope effects on the self-assembly to help clarify the role of different parameters under strong coupling. These findings indicate that VSC is a valuable new tool for controlling supramolecular assemblies with broad implications for the molecular and material sciences.
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Affiliation(s)
- Kripa Joseph
- University of Strasbourg, CNRS, ISIS & icFRC, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Soh Kushida
- University of Strasbourg, CNRS, ISIS & icFRC, 8 allée Gaspard Monge, 67000, Strasbourg, France
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, 305-8577, Japan
| | - Emanuel Smarsly
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, INF 270, 69120, Heidelberg, Germany
| | - Dris Ihiawakrim
- University of Strasbourg, CNRS, IPCMS, 23 rue du Loess, 67034, Strasbourg, France
| | - Anoop Thomas
- University of Strasbourg, CNRS, ISIS & icFRC, 8 allée Gaspard Monge, 67000, Strasbourg, France
- Present address: Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bengaluru, 560012, Bengaluru, India
| | | | - Kalaivanan Nagarajan
- University of Strasbourg, CNRS, ISIS & icFRC, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Robrecht Vergauwe
- University of Strasbourg, CNRS, ISIS & icFRC, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Eloise Devaux
- University of Strasbourg, CNRS, ISIS & icFRC, 8 allée Gaspard Monge, 67000, Strasbourg, France
| | - Ovidiu Ersen
- University of Strasbourg, CNRS, IPCMS, 23 rue du Loess, 67034, Strasbourg, France
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, INF 270, 69120, Heidelberg, Germany
| | - Thomas W Ebbesen
- University of Strasbourg, CNRS, ISIS & icFRC, 8 allée Gaspard Monge, 67000, Strasbourg, France
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12
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Yang Y, Valandro SR, Li Z, Kim S, Schanze KS. Photoinduced Intramolecular Electron Transfer in Phenylene Ethynylene Naphthalimide Oligomers. J Phys Chem A 2021; 125:3863-3873. [PMID: 33945279 DOI: 10.1021/acs.jpca.1c01691] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper reports a photophysical investigation of a series of phenylene ethynylene oligomers (OPE) that are end-substituted with a 1,8-naphthalene imide (NI) acceptor. The NI acceptor is attached to the terminus of the OPEs via an ethynylene (-C≡C-) unit that is linked at the 4-position of the NI unit. A series of three oligomers is investigated, OPE1-NI, OPE3-NI, and OPE5-NI, which contain 1, 3, and 5 phenylene ethynylene repeat units, respectively. The properties of the OPEn-NI series are compared to a corresponding set of unsubstituted OPEs, OPE3 and OPE5, which contain 3 and 5 phenylene ethynylene repeats, respectively. The photophysics of all the compounds are interrogated using a variety of techniques including steady-state absorption, steady-state fluorescence, two-photon absorption, time-resolved fluorescence, and transient absorption spectroscopy on femtosecond-to-microsecond time scales. The effect of solvent polarity on the properties of the oligomers is examined. The results show that the NI-substituted oligomers feature a lowest charge transfer (CT) excited state, where the OPE segment acts as the donor and the NI moiety is the acceptor (OPEn•+-NI•-). The absorption spectra in one-photon and two-photon exhibit a clear manifold of absorption features that can be attributed to direct CT absorption. In moderately polar solvents, the emission is dominated by a broad, solvatochromic band that is due to radiative decay from the CT excited state. Ultrafast transient absorption provides evidence for initial population of a locally excited state (LE) which in moderately polar solvents rapidly (∼1 ps) evolves into the CT excited state. The structure, spectroscopy, and dynamics of the CT state are qualitatively similar for OPE3-NI and OPE5-NI, suggesting that delocalization in the OPE segment does not have much effect on the structure or energetics of the CT excited state.
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Affiliation(s)
- Yajing Yang
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States.,Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
| | - Silvano R Valandro
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
| | - Zhiliang Li
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States.,Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
| | - Soojin Kim
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
| | - Kirk S Schanze
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
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13
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Wang J, Yang X, Zhao P, Deng H, Zhuo LG, Wang G, Yang Y, Wei H, Zhou Z, Liao W. Investigating Antibacterial Efficiency and Mechanism of Oligo-thiophenes under White Light and Specific Biocidal Activity against E. coli in Dark. ACS APPLIED BIO MATERIALS 2021; 4:3561-3570. [DOI: 10.1021/acsabm.1c00077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jing Wang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang, Sichuan 621900, People’s Republic of China
| | - Xia Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang, Sichuan 621900, People’s Republic of China
| | - Peng Zhao
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
| | - Hao Deng
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People’s Republic of China
| | - Lian-Gang Zhuo
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang, Sichuan 621900, People’s Republic of China
| | - Guanquan Wang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang, Sichuan 621900, People’s Republic of China
| | - Yuchuan Yang
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou, Sichuan 215123, People’s Republic of China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang, Sichuan 621900, People’s Republic of China
| | - Hongyuan Wei
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
- Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou, Sichuan 215123, People’s Republic of China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang, Sichuan 621900, People’s Republic of China
| | - Zhijun Zhou
- Collaborative Innovation Center of Radiation Medicine of Jiangsu, Higher Education Institutions, Suzhou, Sichuan 215123, People’s Republic of China
| | - Wei Liao
- Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, People’s Republic of China
- Key Laboratory of Nuclear Medicine and Molecular Imaging of Sichuan Province, Mianyang, Sichuan 621900, People’s Republic of China
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14
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Kumar K, Hiller J, Bender M, Nosrati S, Liu Q, Edelmann M, Maier S, Rammler T, Wackenhut F, Meixner AJ, Braun K, Bunz UHF, Scheele M. Periodic Fluorescence Variations of CdSe Quantum Dots Coupled to Aryleneethynylenes with Aggregation-Induced Emission. ACS NANO 2021; 15:480-488. [PMID: 33438432 DOI: 10.1021/acsnano.0c05121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
CdSe nanocrystals and aggregates of an aryleneethynylene derivative are assembled into a hybrid thin film with dual fluorescence from both fluorophores. Under continuous excitation, the nanocrystals and the molecules exhibit anticorrelated fluorescence intensity variations, which become periodic at low temperature. We attribute this to a structure-dependent aggregation-induced emission of the aryleneethynylene derivative, which impacts the rate of excitation energy transfer between the molecules and nanocrystals. This work highlights that combining semiconductor nanocrystals with molecular aggregates, which exhibit aggregation-induced emission, can result in emerging optical properties.
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Affiliation(s)
- Krishan Kumar
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Jonas Hiller
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Markus Bender
- Organisch-Chemisches Institut and Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Saeed Nosrati
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Quan Liu
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
- Charles Delaunay Institute, CNRS Light, Nanomaterials, Nanotechnologies (L2n, former "LNIO"), University of Technology of Troyes, 12 rue Marie Curie - CS 42060, 10004 Troyes Cedex, France
| | - Marc Edelmann
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Steffen Maier
- Organisch-Chemisches Institut and Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Tim Rammler
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Frank Wackenhut
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Alfred J Meixner
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
- Center for Light-Matter Interaction, Sensors and Analytics LISA+, University of Tübingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany
| | - Kai Braun
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut and Centre for Advanced Materials, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Marcus Scheele
- Institute for Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
- Center for Light-Matter Interaction, Sensors and Analytics LISA+, University of Tübingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany
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15
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Gangada S, Ramnagar RA, Sangolkar AA, Pawar R, Nanubolu JB, Roy P, Giribabu L, Chitta R. Excitation-Wavelength-Dependent Light-Induced Electron Transfer and Twisted Intramolecular Charge Transfer in N, N-Bis(4'- tert-butylbiphenyl-4-yl)aniline Functionalized Borondipyrromethenes. J Phys Chem A 2020; 124:9738-9750. [PMID: 33175539 DOI: 10.1021/acs.jpca.0c04789] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A series of bis(4'-tert-butylbiphenyl-4-yl)aniline (BBA) functionalized borondipyrromethene (BODIPY) dyads, Dyads 1-3, containing the BBA group tethered to BODIPY moiety either directly or through a phenyl or alkynyl phenyl spacers are synthesized, and the light-mediated charge transfer within the chromophores has been systematically investigated. The crystal structure of Dyad-1 showed a tilt of 44.2° between the BODIPY and BBA molecular planes and intermolecular C-H···π interactions with these moieties. Cyclic voltammetric and computational studies showed that the BBA moiety can act as the electron donor (D) and BODIPY as the electron acceptor (A) and the optical absorption studies revealed that an increase in the conjugation of the linker from Dyad-1 to Dyad-2 resulted in bathochromic shifts. Steady-state fluorescence studies involving photoexcitation of the BBA moiety at 326 nm resulted in the decrease in fluorescence intensity of the BBA, indicating the possibility of sequential occurrence of faster photoinduced energy transfer (PEnT) followed by the photoinduced electron transfer (PET) or solely PET within the dyads, and the driving forces of the charge separation were calculated to be exothermic in all of the employed solvents. Parallel time-resolved fluorescence experiments involving the excitation of BBA moiety also supported the occurrence of charge separation in these dyads. Interestingly, excitation of the BODIPY moiety of Dyad-1 and Dyad-2 at 490 nm in solvents of increasing polarity leads to a red-shifted BODIPY emission with weakened intensity. This spectral behavior indicated the occurrence of emission from the locally excited (LE) state in nonpolar solvents, whereas formation of an LE state followed by the rotation of the chromophores at the D-A bond leads to a low energy twisted intramolecular charge transfer state (TICT), resulting in a charge-separated state BBA+•-BODIPY-• in polar solvents. Furthermore, the hydrophobicity studies involving the solutions of dyads in admixtures of polar tetrahydrofuran (THF) and nonpolar hexanes revealed that when the fraction of hexanes in these mixtures is increased, the emission of BODIPY moiety was observed to be blue-shifted and exhibited enhanced intensity supporting the occurrence of TICT in these dyads.
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Affiliation(s)
- Suneel Gangada
- Department of Chemistry, School of Chemical Sciences & Pharmacy, Central University of Rajasthan, Kishangarh, Ajmer 305817, Rajasthan, India
| | | | - Akanksha Ashok Sangolkar
- Department of Chemistry, National Institute of Technology Warangal, Hanamkonda, Warangal 506004, Telangana, India
| | - Ravinder Pawar
- Department of Chemistry, National Institute of Technology Warangal, Hanamkonda, Warangal 506004, Telangana, India
| | | | - Partha Roy
- Department of Chemistry, School of Chemical Sciences & Pharmacy, Central University of Rajasthan, Kishangarh, Ajmer 305817, Rajasthan, India
| | - Lingamallu Giribabu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Raghu Chitta
- Department of Chemistry, School of Chemical Sciences & Pharmacy, Central University of Rajasthan, Kishangarh, Ajmer 305817, Rajasthan, India.,Department of Chemistry, National Institute of Technology Warangal, Hanamkonda, Warangal 506004, Telangana, India
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16
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Hayashi H, Ishigaki Y, Koizumi T. Preparation and Comparison of Chemical Properties of Phenazasiline Monomer, Dimer, Trimer, and Polymer. ChemistrySelect 2020. [DOI: 10.1002/slct.202003121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hideki Hayashi
- Nagoya Municipal Industrial Research Institute 3-4-4 Rokuban Atsuta-ku, Nagoya 456-0058 Japan
| | - Yuzo Ishigaki
- Nagoya Municipal Industrial Research Institute 3-4-4 Rokuban Atsuta-ku, Nagoya 456-0058 Japan
| | - Take‐aki Koizumi
- Laboratory for Chemistry and Life Science Tokyo Institute of Technology 4259 Nagatsuta, Midori-ku Yokohama 226-8503 Japan
- School of Materials and Chemical Technology Tokyo Institute of Technology Yokohama 226–8503 Japan
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17
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Seintis K, Kalis IK, Klikar M, Bureš F, Fakis M. Excitation/detection energy controlled anisotropy dynamics in asymmetrically cyano substituted tri-podal molecules. Phys Chem Chem Phys 2020; 22:16681-16690. [PMID: 32658218 DOI: 10.1039/d0cp01726d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, the photophysical properties of two series of asymmetrical tri-podal molecules are studied, in order to determine the dependence of energy localization/delocalization phenomena on excitation and detection wavelength, by means of steady state, femtosecond time-resolved fluorescence and anisotropy spectroscopy. The molecules bear triphenylamine as an electron donating core and an acetylenic or olefinic π-conjugated bridge. At the periphery, they are substituted by no, one, two or three -CN groups used as electron acceptors. Thus, the compounds with only one or two -CN groups are asymmetrically substituted. As a comparison, the photophysics of their dipolar and quadrupolar analogues is also presented. The steady state absorption spectra of the asymmetrical tri-podal compounds exhibit a broadening and a low energy shoulder due to the splitting of the excited states. The fluorescence spectra are more red-shifted in the tri-podal molecules with a single -CN group, providing the first evidence of its mostly dipolar nature. Time-resolved anisotropy measurements by using different excitation and detection wavelengths provide clear evidence that the asymmetrical tri-podal molecules with one or two -CN groups behave like octupolar molecules upon high-energy excitation (the initial anisotropy is found 0.1-0.15), while upon low-energy excitation they reveal a behavior expected for linear dipolar or V-shaped quadrupolar molecules (the initial anisotropy is very close to 0.4 and 0.17, respectively). The symmetrical tri-podal compounds with no or three cyano groups, exhibit an anisotropy depolarization time of 2.5 ps attributed to energy hopping. The amplitude of this energy hopping component is wavelength dependent and increases as the excitation is shifted towards the long wavelength edge.
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Affiliation(s)
- K Seintis
- Department of Physics, University of Patras, GR-26504, Patras, Greece.
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18
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Jones AL, Jiang J, Schanze KS. Excitation-Wavelength-Dependent Photoinduced Electron Transfer in a π-Conjugated Diblock Oligomer. J Am Chem Soc 2020; 142:12658-12668. [PMID: 32589407 DOI: 10.1021/jacs.0c03678] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Control of photoinduced electron transfer through selective excitation of a π-conjugated diblock oligomeric system featuring tetrathiophene (T4) and tetra(phenylene ethynylene) (PE4) donor blocks capped with a naphthalene diimide (NDI) acceptor (T4PE4NDI) is demonstrated. Each π-conjugated oligomeric segment has its own discrete ionization potential, electron affinity, and optical band gap which provides an absorption profile that has specific wavelengths that offer selective excitation of the PE4 and T4 blocks. Therefore, T4PE4NDI can be selectively excited to form a charge-separated state via ultrafast photoinduced electron transfer from the PE4 segment to NDI when excited at 370 nm, but it does not produce a charge-separated state when excited at 420 nm (T4). Picosecond transient absorption techniques were performed to probe the excited-state dynamics, revealing ultrafast charge separation (∼4 ps) occurring from the PE4 segment to NDI when excited at 370 nm, followed by delocalization of the hole over the T4 segment. On the contrary, electron transfer is suppressed with excitation at longer wavelengths (≥420 nm), where the spectrum is dominated by the T4 unit. The rate of electron transfer and charge recombination was investigated versus the length of the PE bridge unit in oligomers featuring zero and two PE units (T4NDI and T4PE2NDI). The rate of charge recombination decreases from 1.2 × 1011 to 1.0 × 109 s-1 with increasing bridge length between the T4 and NDI components (T4NDI to T4PE4NDI). Furthermore, wavelength-dependent photoinduced electron transfer was not observed in either T4NDI or T4PE2NDI due to an insufficient PEn bridge length. This work demonstrates the ability to use optical wavelength to control photoinduced electron transfer in a fully π-conjugated oligomer.
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Affiliation(s)
- Austin L Jones
- Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Junlin Jiang
- Department of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Kirk S Schanze
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
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19
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Chiu C, Yang J. Photoluminescent and Photoresponsive Iptycene‐Incorporated π‐Conjugated Systems: Fundamentals and Applications. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.201900300] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Chun‐Wei Chiu
- Department of ChemistryNational Taiwan University No 1, Sec 4, Roosevelt Rd Taipei 10617 Taiwan
| | - Jye‐Shane Yang
- Department of ChemistryNational Taiwan University No 1, Sec 4, Roosevelt Rd Taipei 10617 Taiwan
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20
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Kartha KK, Wendler F, Rudolph T, Biehl P, Fernández G, Schacher FH. pH-Responsive Side Chains as a Tool to Control Aqueous Self-Assembly Mechanisms. Chemistry 2020; 26:606-610. [PMID: 31713917 PMCID: PMC7003937 DOI: 10.1002/chem.201904284] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/31/2019] [Indexed: 01/02/2023]
Abstract
pH-Tunable nanoscale morphology and self-assembly mechanism of a series of oligo(p-phenyleneethynylene) (OPE)-based bolaamphiphiles featuring poly(ethylene imine) (PEI) side chains of different length and degree of hydrolysis are described. Protonation and deprotonation of the PEI chains by changing the pH alters the hydrophilic/hydrophobic balance of the systems and, in turn, the strength of intermolecular interactions between the hydrophobic OPE moieties. Low pH values (3) lead to weak interaction between the OPEs and result in spherical nanoparticles, in which aggregation follows an isodesmic mechanism. In contrast, higher pH values (11) induce deprotonation of the polymer chains and lead to a stronger, cooperative aggregation into anisotropic nanostructures. Our results demonstrate that pH-responsive chains can be exploited as a tool to tune self-assembly mechanisms, which opens exciting possibilities to develop new stimuli-responsive materials.
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Affiliation(s)
- Kalathil K. Kartha
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 4048149MünsterGermany
| | - Felix Wendler
- Laboratory of Organic and Macromolecular Chemistry and Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaHumboldtstrasse 1007743JenaGermany
| | - Tobias Rudolph
- Laboratory of Organic and Macromolecular Chemistry and Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaHumboldtstrasse 1007743JenaGermany
| | - Philip Biehl
- Laboratory of Organic and Macromolecular Chemistry and Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaHumboldtstrasse 1007743JenaGermany
| | - Gustavo Fernández
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstrasse 4048149MünsterGermany
| | - F. H. Schacher
- Laboratory of Organic and Macromolecular Chemistry and Jena Center for Soft Matter (JCSM)Friedrich Schiller University JenaHumboldtstrasse 1007743JenaGermany
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21
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Fedunov RG, Yermolenko IP, Nazarov AE, Ivanov AI, Rosspeintner A, Angulo G. Theory of fluorescence spectrum dynamics and its application to determining the relaxation characteristics of the solvent and intramolecular vibrations. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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22
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Coelho JP, Matern J, Albuquerque RQ, Fernández G. Mechanistic Insights into Statistical Co-Assembly of Metal Complexes. Chemistry 2019; 25:8960-8964. [PMID: 30920063 PMCID: PMC7318678 DOI: 10.1002/chem.201900604] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Indexed: 11/09/2022]
Abstract
Statistical copolymerization plays a key role in many biological and technological processes; however, mechanistic understanding of the formation of analogous supramolecular counterparts remains limited. Herein, we report detailed insights into the supramolecular co-assembly of two π-conjugated PdII and PtII complexes, which in isolation self-assemble into flexible fibers and nanodisks, respectively. An efficient single-step co-assembly into only one type of nanostructure (fibers or nanodisks) takes place if any of the components is in excess. In contrast, equimolar mixtures lead to PdII -rich fiber-like co-assemblies by a statistical co-nucleation event along with a residual amount of self-sorted nanodisks in a stepwise manner.
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Affiliation(s)
- Joao Paulo Coelho
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität, MünsterCorrensstrasse 4048149MünsterGermany
| | - Jonas Matern
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität, MünsterCorrensstrasse 4048149MünsterGermany
| | - Rodrigo Q. Albuquerque
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität, MünsterCorrensstrasse 4048149MünsterGermany
| | - Gustavo Fernández
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität, MünsterCorrensstrasse 4048149MünsterGermany
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23
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Söderberg M, Dereka B, Marrocchi A, Carlotti B, Vauthey E. Ground-State Structural Disorder and Excited-State Symmetry Breaking in a Quadrupolar Molecule. J Phys Chem Lett 2019; 10:2944-2948. [PMID: 31081644 DOI: 10.1021/acs.jpclett.9b01024] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The influence of torsional disorder around the ethynyl π-bridges of a linear D-π-A-π-D molecule on the nature of its S1 excited state was investigated using ultrafast time-resolved infrared spectroscopy. By tuning the pump wavelength throughout the S1 ← S0 absorption band, subpopulations with different extents of asymmetry could be excited. In nonpolar solvents, the equilibrated S1 state is symmetric and quadrupolar independently of the initial degree of distortion. Photoexcitation of distorted molecules is followed by planarization and symmetrization of the S1 state. Excited-state symmetry breaking is only observed in polar environments, where the equilibrated S1 state has a strong dipolar character. However, neither the extent nor the rate of symmetry breaking are enhanced in an initially distorted molecule. They are only determined by the polarity and the dynamic properties of the solvent.
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Affiliation(s)
- Magnus Söderberg
- Department of Physical Chemistry , University of Geneva , 30 quai Ernest-Ansermet , CH-1211 Geneva , Switzerland
| | - Bogdan Dereka
- Department of Physical Chemistry , University of Geneva , 30 quai Ernest-Ansermet , CH-1211 Geneva , Switzerland
| | - Assunta Marrocchi
- Department of Chemistry, Biology and Biotechnology , University of Perugia , via Elce di Sotto 8 , 06123 Perugia , Italy
| | - Benedetta Carlotti
- Department of Chemistry, Biology and Biotechnology , University of Perugia , via Elce di Sotto 8 , 06123 Perugia , Italy
| | - Eric Vauthey
- Department of Physical Chemistry , University of Geneva , 30 quai Ernest-Ansermet , CH-1211 Geneva , Switzerland
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24
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Jagadesan P, Schanze KS. Poly(phenylene ethynylene) Conjugated Polyelectrolytes Synthesized via Chain-Growth Polymerization. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00288] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Pradeepkumar Jagadesan
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
| | - Kirk S. Schanze
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
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25
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Philips DS, Kartha KK, Politi AT, Krüger T, Albuquerque RQ, Fernández G. Interplay between H-Bonding and Preorganization in the Evolution of Self-Assembled Systems. Angew Chem Int Ed Engl 2019; 58:4732-4736. [PMID: 30618093 PMCID: PMC7646291 DOI: 10.1002/anie.201813955] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Indexed: 01/21/2023]
Abstract
Cooperative π-π interactions and H-bonding are frequently exploited in supramolecular polymerization; however, close scrutiny of their mutual interplay has been largely unexplored. Herein, we compare the self-assembly behavior of a series of C2 - and C3 -symmetrical oligophenyleneethynylenes differing in their amide topology (N- or C-centered). This subtle structural modification brings about drastic changes in their photophysical and supramolecular properties, highlighting the reciprocal impact of H-bonding vs. preorganization on the evolution and final outcome of supramolecular systems.
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Affiliation(s)
- Divya S. Philips
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Kalathil K. Kartha
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Antiope T. Politi
- School of Pharmacy and Biomolecular SciencesLiverpool John Moores University (LJMU)LiverpoolUK
| | - Timo Krüger
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Rodrigo Q. Albuquerque
- School of Pharmacy and Biomolecular SciencesLiverpool John Moores University (LJMU)LiverpoolUK
- São Carlos Institute of ChemistryUniversity of São PauloBrazil
| | - Gustavo Fernández
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
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26
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Philips DS, Kartha KK, Politi AT, Krüger T, Albuquerque RQ, Fernández G. Das Zusammenspiel zwischen Wasserstoffbrücken und Präorganisation in der Entwicklung von selbstassemblierenden Systemen. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813955] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Divya S. Philips
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Kalathil K. Kartha
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Antiope T. Politi
- School of Pharmacy and Biomolecular Sciences Liverpool John Moores University (LJMU) Liverpool Großbritannien
| | - Timo Krüger
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Rodrigo Q. Albuquerque
- School of Pharmacy and Biomolecular Sciences Liverpool John Moores University (LJMU) Liverpool Großbritannien
- São Carlos Institute of Chemistry University of São Paulo Brasilien
| | - Gustavo Fernández
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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27
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Song H, Wang K, Kuang Z, Zhao YS, Guo Q, Xia A. Solvent modulated excited state processes of push-pull molecule with hybridized local excitation and intramolecular charge transfer character. Phys Chem Chem Phys 2019; 21:3894-3902. [PMID: 30702103 DOI: 10.1039/c8cp06459h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Recently, a type of synthetic highly efficient OLED molecule based on a hybridized local excitation and charge transfer (HLCT) character has received much attention as a potential high-efficiency fluorescent OLED material. In this article, we report the relaxation dynamics of the excited states of cyano-substituted oligo α-phenylenevinylene-1,4-bis(R-cyano-4-diphenylaminostyryl)-2,5-diphenylbenzene (CNDPASDB) with HLCT character using steady-state and time-resolved spectroscopy as well as quantum chemical calculations. The dramatic dependence of the fluorescence quantum yield, radiative and non-radiative rate, as well as the excited state relaxation pathways on solvent polarity reveals that the solvation process controls the energy levels of two closely spaced electronic excited states. By employing femtosecond transient absorption spectra, the gradual transition from the LE state to the intramolecular CT state with an increase in solvent polarity is clearly resolved. In low-polarity solvents the fluorescence of CNDPASDB is mainly emission from the LE state, whereas in high-polarity solvents non-radiative decay from the CT state dominates. And in medium-polarity solvents, because of the relatively weaker solvation-induced stabilization of the CT state, its energy could be equal to or slightly lower than that of the LE state, leading to a smaller driving force for LE → CT interconversion; therefore complete LE → CT interconversion cannot take place. In this situation, LE ↔ CT intercrossed equilibration is established and the equilibrium constant is further estimated to be about 4 according to the obtained kinetics, and the equilibrium population of the CT state is about 80%. DFT/TDDFT analysis also confirmed an efficient intercrossing of LE and CT states with an increase in solvent polarity. It is found that upon increasing the solvent polarity, the hole and electron on a molecule are entirely separated, suggesting a complete CT character. These results provide guidance for understanding the relationship between solvent polarity and the HLCT process, as well as for designing and synthesizing advanced OLED materials.
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Affiliation(s)
- Hongwei Song
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
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28
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Yoon KY, Xue Y, Dong G. Three-Step Synthesis of a Less-Aggregated Water-Soluble Poly(p-phenylene ethynylene) with Meta Side Chains via Palladium/Norbornene Cooperative Catalysis. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02645] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ki-Young Yoon
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Yazhen Xue
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- College of Chemistry, Peking University, Beijing 100871, China
| | - Guangbin Dong
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
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29
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Whitten DG, Tang Y, Zhou Z, Yang J, Wang Y, Hill EH, Pappas HC, Donabedian PL, Chi EY. A Retrospective: 10 Years of Oligo(phenylene-ethynylene) Electrolytes: Demystifying Nanomaterials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:307-325. [PMID: 30056722 DOI: 10.1021/acs.langmuir.8b01810] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this retrospective, we first reviewed the synthesis of the oligo(phenylene-ethynylene) electrolytes (OPEs) we created in the past 10 years. Since the general antimicrobial activity of these OPEs had been reported in our previous account in Langmuir, we are focusing only on the unusual spectroscopic and photophysical properties of these OPEs and their complexes with anionic scaffolds and detergents in this Feature Article. We applied classical all-atom MD simulations to study the hydrogen bonding environment in the water surrounding the OPEs with and without detergents present. Our finding is that OPEs could form a unit cluster or unit aggregate with a few oppositely charged detergent molecules, indicating that the photostability and photoreactivity of these OPEs might be considerably altered with important consequences to their activity as antimicrobials and fluorescence-based sensors. Thus, in the following sections, we showed that OPE complexes with detergents exhibit enhanced light-activated biocidal activity compared to either OPE or detergent individually. We also found that similar complexes between certain OPEs and biolipids could be used to construct sensors for the enzyme activity. Finally, the OPEs could covalently bind to microsphere surfaces to make a bactericidal surface, which is simpler and more ordered than the surface grafted from microspheres with polyelectrolytes. In the Conclusions and Prospects section, we briefly summarize the properties of OPEs developed so far and future areas for investigation.
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Affiliation(s)
- David G Whitten
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Yanli Tang
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Zhijun Zhou
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Jianzhong Yang
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Ying Wang
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Eric H Hill
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Harry C Pappas
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Patrick L Donabedian
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
| | - Eva Y Chi
- Department of Chemical and Biological Engineering , University of New Mexico , Albuquerque , New Mexico 87131 , United States
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30
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Ehrhorn H, Tamm M. Well-Defined Alkyne Metathesis Catalysts: Developments and Recent Applications. Chemistry 2018; 25:3190-3208. [PMID: 30346054 DOI: 10.1002/chem.201804511] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 12/31/2022]
Abstract
Although alkyne metathesis has been known for 50 years, rapid progress in this field has mostly occurred during the last two decades. In this article, the development of several highly efficient and thoroughly studied alkyne metathesis catalysts is reviewed, which includes novel well-defined, in situ formed and heterogeneous systems. Various alkyne metathesis methodologies, including alkyne cross-metathesis (ACM), ring-closing alkyne metathesis (RCAM), cyclooligomerization, acyclic diyne metathesis polymerization (ADIMET), and ring-opening alkyne metathesis polymerization (ROAMP), are presented, and their application in natural product synthesis, materials science as well as supramolecular and polymer chemistry is discussed. Recent progress in the metathesis of diynes is also summarized, which gave rise to new methods such as ring-closing diyne metathesis (RCDM) and diyne cross-metathesis (DYCM).
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Affiliation(s)
- Henrike Ehrhorn
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
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31
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Sharber SA, Thomas SW. Small Changes With Big Consequences: Swapping Two Atoms In Side Chains Changes Phenylene-Ethynylene Packing And Fluorescence. Chemistry 2018; 24:16987-16991. [PMID: 30281848 DOI: 10.1002/chem.201804648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Indexed: 11/06/2022]
Abstract
Engineering the properties of conjugated materials in the solid state is an unsolved, ongoing challenge important to fundamental understanding of how non-covalent interactions dictate packing and key properties, as well as the development of technologies based in organic optoelectronics. The most common design paradigm of such materials divide them into a "main chain" with extended conjugation, the chemical structure of which determines optoelectronic properties, and "side chains" not conjugated to the backbone, which provide solubility when they are long alkyl chains. This paper describes comparisons between phenylene-ethynylene molecules in which slight changes to the structure of "side chains"-swapping hydrogen and fluorine atomic position on an aromatic ring-results in unexpectedly large changes in the solid-state optical properties. In a pair of anisyl-terminated three-ring phenylene-ethynylenes, switching the side chain arenes of benzyl esters from 2,4,6-trifluoro to 2,3,6-trifluoro results in a shift in fluorescence emission spectra of over 100 nm, as well as the opposite direction of force-induced shifting of emission. Through a combination X-ray crystal structures, electronic structure calculations, and comparisons with other derivatives, we describe how the 2,4,6-trifluorinated side chains yield cofacial fluoroarene-arene stacking interactions that twist the PE backbone out of conjugation, while the 2,3,6-trifluoro side chains do not stack, instead yielding more coplanar PE backbones that form intermolecular aggregates. Overall, this work demonstrates how slight modifications to parts of conjugated materials normally considered ancillary to optoelectronic properties can determine their solid-state properties, epitomizing the challenge of rational design but at the same time offering opportunities for materials discovery and improved understanding of non-covalent interactions.
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Affiliation(s)
- Seth A Sharber
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA, 02155, USA
| | - Samuel W Thomas
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, MA, 02155, USA
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32
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Kournoutas F, Seintis K, Karakostas N, Tydlitát J, Achelle S, Pistolis G, Bureš F, Fakis M. Photophysical and Protonation Time Resolved Studies of Donor–Acceptor Branched Systems With Pyridine Acceptors. J Phys Chem A 2018; 123:417-428. [DOI: 10.1021/acs.jpca.8b08628] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Fotis Kournoutas
- Department of Physics, University of Patras, Greece, GR-26504 Patras, Greece
| | - Kostas Seintis
- Department of Physics, University of Patras, Greece, GR-26504 Patras, Greece
| | - Nikolaos Karakostas
- NCSR “Demokritos” Institute of Nanosciences and Nanotechnology (INN), 153 10 Athens, Greece
| | - Jiří Tydlitát
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 532 10, Czech Republic
| | - Sylvain Achelle
- University of Rennes CNRS, ISCR (Institut des Sciences Chimiques de Rennes), UMR 6226, F-35000 Rennes, France
| | - George Pistolis
- NCSR “Demokritos” Institute of Nanosciences and Nanotechnology (INN), 153 10 Athens, Greece
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice 532 10, Czech Republic
| | - Mihalis Fakis
- Department of Physics, University of Patras, Greece, GR-26504 Patras, Greece
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33
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Kozhemyakin Y, Krämer M, Rominger F, Dreuw A, Bunz UHF. A Tethered Tolane: Twisting the Excited State. Chemistry 2018; 24:15219-15222. [PMID: 30105868 DOI: 10.1002/chem.201804095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/13/2018] [Indexed: 11/05/2022]
Abstract
The synthesis of a doubly bridged tolane is reported. The target is obtained in a five-step synthesis, starting from commercially available 2-amino-meta-xylene by a combination of a Sandmeyer reaction, radical bromination, and Stille-type coupling, followed by double ring closing. The doubly tethered tolane is crystalline; the two phenyl rings are highly twisted with respect to each other both in solution and in the solid state. Optical spectroscopy and quantum chemical calculations show that the doubly bridged tolane is twisted not only in the ground state, but also in the excited state, leading to emission from the twisted state in solution and in the solid state. Strong phosphorescence is observed at cryogenic temperatures.
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Affiliation(s)
- Yury Kozhemyakin
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Maximilian Krämer
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 205, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Andreas Dreuw
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 205, 69120, Heidelberg, Germany
| | - Uwe H F Bunz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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34
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Wurst KM, Bender M, Lauth J, Maiti S, Chassé T, Meixner A, Siebbeles LDA, Bunz UHF, Braun K, Scheele M. Correlated, Dual-Beam Optical Gating in Coupled Organic-Inorganic Nanostructures. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803452] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kai M. Wurst
- Institute of Physical and Theoretical Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Markus Bender
- Institute of Organic Chemistry and Centre for Advanced Materials; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Jannika Lauth
- Institute of Chemistry; Physical Chemistry; Carl von Ossietzky University Oldenburg; Carl-von-Ossietzky-Str. 9-11 26129 Oldenburg Germany
| | - Sonam Maiti
- Institute of Physical and Theoretical Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Thomas Chassé
- Institute of Physical and Theoretical Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Alfred Meixner
- Institute of Physical and Theoretical Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Laurens D. A. Siebbeles
- Chemical Engineering; Delft University of Technology; Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Uwe H. F. Bunz
- Institute of Organic Chemistry and Centre for Advanced Materials; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Kai Braun
- Institute of Physical and Theoretical Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Marcus Scheele
- Institute of Physical and Theoretical Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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35
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Wurst KM, Bender M, Lauth J, Maiti S, Chassé T, Meixner A, Siebbeles LDA, Bunz UHF, Braun K, Scheele M. Correlated, Dual‐Beam Optical Gating in Coupled Organic–Inorganic Nanostructures. Angew Chem Int Ed Engl 2018; 57:11559-11563. [DOI: 10.1002/anie.201803452] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Kai M. Wurst
- Institute of Physical and Theoretical ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Markus Bender
- Institute of Organic Chemistry and Centre for Advanced MaterialsRuprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Jannika Lauth
- Institute of ChemistryPhysical ChemistryCarl von Ossietzky University Oldenburg Carl-von-Ossietzky-Str. 9–11 26129 Oldenburg Germany
| | - Sonam Maiti
- Institute of Physical and Theoretical ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Thomas Chassé
- Institute of Physical and Theoretical ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Alfred Meixner
- Institute of Physical and Theoretical ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Laurens D. A. Siebbeles
- Chemical EngineeringDelft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Uwe H. F. Bunz
- Institute of Organic Chemistry and Centre for Advanced MaterialsRuprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Kai Braun
- Institute of Physical and Theoretical ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Marcus Scheele
- Institute of Physical and Theoretical ChemistryUniversity of Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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36
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Dereka B, Rosspeintner A, Stężycki R, Ruckebusch C, Gryko DT, Vauthey E. Excited-State Symmetry Breaking in a Quadrupolar Molecule Visualized in Time and Space. J Phys Chem Lett 2017; 8:6029-6034. [PMID: 29190104 DOI: 10.1021/acs.jpclett.7b02944] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The influence of the length of the push-pull branches of quadrupolar molecules on their excited-state symmetry breaking was investigated using ultrafast time-resolved IR spectroscopy. For this, the excited-state dynamics of an A-π-D-π-A molecule was compared with those of an ADA analogue, where the same electron donor (D) and acceptor (A) subunits are directly linked without a phenylethynyl π-spacer. The spatial distribution of the excitation was visualized in real time by monitoring C≡C and C≡N vibrational modes localized in the spacer and acceptor units, respectively. In nonpolar solvents, the excited state is quadrupolar and the excitation is localized on the π-D-π center. In medium polarity solvents, the excitation spreads over the entire molecule but is no longer symmetric. Finally, in the most polar solvents, the excitation localizes on a single D-π-A branch, contrary to the ADA analogue where symmetry breaking is only partial.
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Affiliation(s)
- Bogdan Dereka
- Department of Physical Chemistry, University of Geneva , 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry, University of Geneva , 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland
| | - Rafał Stężycki
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Cyril Ruckebusch
- Université de Lille , CNRS, UMR 8516, LASIR, Laboratoire de Spectrochimie Infrarouge et Raman, Lille 59000, France
| | - Daniel T Gryko
- Institute of Organic Chemistry, Polish Academy of Sciences , Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva , 30 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland
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37
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Beckwith JS, Rosspeintner A, Licari G, Lunzer M, Holzer B, Fröhlich J, Vauthey E. Specific Monitoring of Excited-State Symmetry Breaking by Femtosecond Broadband Fluorescence Upconversion Spectroscopy. J Phys Chem Lett 2017; 8:5878-5883. [PMID: 29144140 DOI: 10.1021/acs.jpclett.7b02754] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Most quadrupolar molecules designed for large two-photon absorption cross section have been shown to undergo symmetry breaking upon excitation to the S1 state. This was originally deduced from their strong fluorescence solvatochromism and later visualized in real time using transient infrared spectroscopy. For molecules not containing clear IR marker modes, however, a specific real-time observation of the symmetry breaking process remains lacking. Here we show that this process can be resolved using broadband fluorescence upconversion spectroscopy by monitoring the instantaneous emission transition dipole moment. This approach is illustrated with measurements performed on two quadrupolar molecules, with only one of them undergoing excited-state symmetry breaking in polar solvents.
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Affiliation(s)
- Joseph S Beckwith
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
| | - Arnulf Rosspeintner
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
| | - Giuseppe Licari
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
| | - Markus Lunzer
- Institute of Applied Synthetic Chemistry, TU Wien , Getreidemarkt 9/163OC, A-1060 Vienna, Austria
| | - Brigitte Holzer
- Institute of Applied Synthetic Chemistry, TU Wien , Getreidemarkt 9/163OC, A-1060 Vienna, Austria
| | - Johannes Fröhlich
- Institute of Applied Synthetic Chemistry, TU Wien , Getreidemarkt 9/163OC, A-1060 Vienna, Austria
| | - Eric Vauthey
- Physical Chemistry Department, University of Geneva , Quai Ernest Ansermet 30, CH-1211 Geneva, Switzerland
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38
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Ahner J, Micheel M, Enke M, Zechel S, Schubert US, Dietzek B, Hager MD. Directed Orientation of Oligo(phenylene ethynylene)s Using Ureas or Urethanes in Rod-Coil Copolymers. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700343] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Johannes Ahner
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Mathias Micheel
- Institute of Physical Chemistry; Friedrich Schiller University Jena; Helmholtzweg 4 07743 Jena Germany
- Leibniz Institute of Photonic Technology (IPHT) e.V.; Albert-Einstein-Straße 9 07745 Jena Germany
| | - Marcel Enke
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Stefan Zechel
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
| | - Benjamin Dietzek
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
- Institute of Physical Chemistry; Friedrich Schiller University Jena; Helmholtzweg 4 07743 Jena Germany
- Leibniz Institute of Photonic Technology (IPHT) e.V.; Albert-Einstein-Straße 9 07745 Jena Germany
| | - Martin D. Hager
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Jena Center for Soft Matter (JCSM); Friedrich Schiller University Jena; Philosophenweg 7 07743 Jena Germany
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39
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Kushida S, Smarsly E, Veith L, Wacker I, Schröder RR, Bunz UHF. Solid-State Gels of Poly(p-phenyleneethynylene)s by Solvent Exchange. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b02087] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Soh Kushida
- Organisch-Chemisches
Institut and ‡CAM, Centre for Advanced Materials, Ruprecht-Karls-Universitäẗ Heidelberg, 69120 Heidelberg, Germany
| | - Emanuel Smarsly
- Organisch-Chemisches
Institut and ‡CAM, Centre for Advanced Materials, Ruprecht-Karls-Universitäẗ Heidelberg, 69120 Heidelberg, Germany
| | - Lisa Veith
- Organisch-Chemisches
Institut and ‡CAM, Centre for Advanced Materials, Ruprecht-Karls-Universitäẗ Heidelberg, 69120 Heidelberg, Germany
| | - Irene Wacker
- Organisch-Chemisches
Institut and ‡CAM, Centre for Advanced Materials, Ruprecht-Karls-Universitäẗ Heidelberg, 69120 Heidelberg, Germany
| | - Rasmus R. Schröder
- Organisch-Chemisches
Institut and ‡CAM, Centre for Advanced Materials, Ruprecht-Karls-Universitäẗ Heidelberg, 69120 Heidelberg, Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches
Institut and ‡CAM, Centre for Advanced Materials, Ruprecht-Karls-Universitäẗ Heidelberg, 69120 Heidelberg, Germany
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40
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Kozhemyakin Y, Kretzschmar A, Krämer M, Rominger F, Dreuw A, Bunz UHF. Synthesis and Properties of Functional Twisted Tolanes. Chemistry 2017; 23:9908-9918. [DOI: 10.1002/chem.201701519] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Yury Kozhemyakin
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Andreas Kretzschmar
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Maximilian Krämer
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 205 69120 Heidelberg Germany
| | - Frank Rominger
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Andreas Dreuw
- Interdisziplinäres Zentrum für Wissenschaftliches Rechnen; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 205 69120 Heidelberg Germany
- Centre for Advanced Materials; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 225 69120 Heidelberg Germany
| | - Uwe H. F. Bunz
- Organisch-Chemisches Institut; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
- Centre for Advanced Materials; Ruprecht-Karls-Universität Heidelberg; Im Neuenheimer Feld 225 69120 Heidelberg Germany
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41
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Ortiz M, Yu C, Jin Y, Zhang W. Poly(aryleneethynylene)s: Properties, Applications and Synthesis Through Alkyne Metathesis. Top Curr Chem (Cham) 2017; 375:69. [PMID: 28653155 DOI: 10.1007/s41061-017-0156-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/01/2017] [Indexed: 10/19/2022]
Abstract
Functional polymeric materials have seen their way into every facet of materials chemistry and engineering. In this review article, we focus on a promising class of polymers, poly(aryleneethynylene)s, by covering several of the numerous applications found thus far for these materials. Additionally, we survey the current synthetic strategies used to create these polymers, with a focus on the emerging technique of alkyne metathesis. An overview is presented of the most recent catalytic systems that support alkyne metathesis as well as the more useful alkyne metathesis reaction capable of synthesizing poly(aryleneethynylene)s.
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Affiliation(s)
- Michael Ortiz
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, 80309, USA
- Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Chao Yu
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, 80309, USA
| | - Yinghua Jin
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, 80309, USA
| | - Wei Zhang
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, Boulder, CO, 80309, USA.
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42
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Jiang J, Alsam A, Wang S, Aly SM, Pan Z, Mohammed OF, Schanze KS. Effect of Conjugation Length on Photoinduced Charge Transfer in π-Conjugated Oligomer-Acceptor Dyads. J Phys Chem A 2017; 121:4891-4901. [DOI: 10.1021/acs.jpca.7b03547] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junlin Jiang
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Amani Alsam
- Solar
and Photovoltaics Engineering Research Center, Division of Physical
Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Shanshan Wang
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Shawkat M. Aly
- Solar
and Photovoltaics Engineering Research Center, Division of Physical
Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Zhenxing Pan
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Omar F. Mohammed
- Solar
and Photovoltaics Engineering Research Center, Division of Physical
Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Kirk S. Schanze
- Department
of Chemistry and Center for Macromolecular Science and Engineering, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
- Department
of Chemistry, University of Texas at San Antonio, One UTSA Way, San Antonio, Texas 78249, United States
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43
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Szyszkowska M, Czaplewski C, Wiczk W. Photophysical and theoretical studies of diphenylacetylene derivatives with restricted rotation. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.02.096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Roy K, Kayal S, Ariese F, Beeby A, Umapathy S. Mode specific excited state dynamics study of bis(phenylethynyl)benzene from ultrafast Raman loss spectroscopy. J Chem Phys 2017; 146:064303. [DOI: 10.1063/1.4975174] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Khokan Roy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Surajit Kayal
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Freek Ariese
- On leave from LaserLaB, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, Netherlands
| | - Andrew Beeby
- Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, United Kingdom
| | - Siva Umapathy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
- On leave from LaserLaB, VU University Amsterdam, De Boelelaan 1081, 1081 HV Amsterdam, Netherlands
- Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, United Kingdom
- Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore 560012, India
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45
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Seintis K, Agathangelou D, Cvejn D, Almonasy N, Bureš F, Giannetas V, Fakis M. Femtosecond to nanosecond studies of octupolar molecules and their quadrupolar and dipolar analogues. Phys Chem Chem Phys 2017; 19:16485-16497. [DOI: 10.1039/c7cp01463e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The fs–ps anisotropy dynamics of octupolar, quadrupolar and dipolar molecules with different π-bridges.
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Affiliation(s)
- K. Seintis
- Department of Physics
- University of Patras
- Patras
- Greece
| | | | - D. Cvejn
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - N. Almonasy
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - F. Bureš
- Institute of Organic Chemistry and Technology
- Faculty of Chemical Technology
- University of Pardubice
- Pardubice
- Czech Republic
| | - V. Giannetas
- Department of Physics
- University of Patras
- Patras
- Greece
| | - M. Fakis
- Department of Physics
- University of Patras
- Patras
- Greece
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46
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Szyszkowska M, Bylińska I, Wiczk W. Influence of an electron-acceptor substituent type on the photophysical properties of unsymmetrically substituted diphenylacetylene. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.03.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Wierzbicka M, Bylińska I, Sikorski A, Czaplewski C, Wiczk W. Experimental and theoretical studies of spectroscopic properties of simple symmetrically substituted diphenylbuta-1,3-diyne derivatives. Photochem Photobiol Sci 2016; 14:2251-60. [PMID: 26536160 DOI: 10.1039/c5pp00150a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of symmetrically substituted diphenylbuta-1,3-diyne (DPB) derivatives possessing electron-donating (N,N-dimethylamino or methoxy) or electron-accepting (nitrile, ester or aldehyde) groups have been prepared and studied with emphasis on their spectral and photophysical properties. The photophysical characteristics of these compounds have been studied in relation to their structures and influence of solvents or temperature. The observed spectral and photophysical properties are explained with the help of potential energy maps in the ground and excited states obtained from density functional theory (DFT, B3LYP, def2TZVP basis set) calculations. The structure-property relationship of all of the compounds is discussed and compared with appropriate diphenylacetylene derivatives.
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Affiliation(s)
| | - Irena Bylińska
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Artur Sikorski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Cezary Czaplewski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| | - Wiesław Wiczk
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
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48
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Bylińska I, Wierzbicka M, Czaplewski C, Wiczk W. Photophysical properties of symmetrically substituted diarylacetylenes and diarylbuta-1,3-diynes. Photochem Photobiol Sci 2016; 15:45-56. [DOI: 10.1039/c5pp00197h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of symmetrically substituted diarylacetylenes and diaryl-1,3-butadiynes were prepared and studied with an emphasis on their spectral and photophysical properties.
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Affiliation(s)
- Irena Bylińska
- Faculty of Chemistry
- University of Gdańsk
- Wita Stwosza 63
- Poland
| | | | | | - Wiesław Wiczk
- Faculty of Chemistry
- University of Gdańsk
- Wita Stwosza 63
- Poland
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49
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Verolet Q, Rosspeintner A, Soleimanpour S, Sakai N, Vauthey E, Matile S. Turn-On Sulfide π Donors: An Ultrafast Push for Twisted Mechanophores. J Am Chem Soc 2015; 137:15644-7. [DOI: 10.1021/jacs.5b10879] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Quentin Verolet
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Arnulf Rosspeintner
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Saeideh Soleimanpour
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Naomi Sakai
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Eric Vauthey
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland
| | - Stefan Matile
- School of Chemistry and Biochemistry, University of Geneva, CH-1211 Geneva, Switzerland
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50
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Wang J, Huang J, Du L, Lan Z. Photoinduced Ultrafast Intramolecular Excited-State Energy Transfer in the Silylene-Bridged Biphenyl and Stilbene (SBS) System: A Nonadiabatic Dynamics Point of View. J Phys Chem A 2015; 119:6937-48. [DOI: 10.1021/acs.jpca.5b00354] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Wang
- Key
Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy
and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 Shandong, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jing Huang
- Key
Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy
and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 Shandong, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Likai Du
- Key
Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy
and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 Shandong, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhenggang Lan
- Key
Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy
and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101 Shandong, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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