1
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Li B, Lin S, Gu FL. Intramolecular boron-locking strategy induced remarkable first hyperpolarizability: role of torsion angles between donor and acceptor units. Phys Chem Chem Phys 2024; 26:11731-11737. [PMID: 38563632 DOI: 10.1039/d3cp06276g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
In conventional strategies to design donor-acceptor (D-A) organic molecules with a large electronic contribution to the first hyperpolarizability (β), the effects of the torsion angles (θ1 and θ2) between donor and acceptor moieties are barely considered. To address this issue, in this work, a promising and novel intramolecular boron-locking strategy combined with the different locking groups of different acceptors to control θ1 and θ2, has been proposed to make D-A organic molecules with large β values. Intriguingly, reducing the torsion angles will make the β value of the pyridiny thiophene triphenylamine unit (Py-Th-TPA) dramatically increase up to 94%, which is mainly ascribed to the smaller θ1 and θ2 leading to lower excited energy of the crucial excited state, and enhanced charge transfer (CT) from TPA to Py-Th moieties, and finally greatly increase the donor and acceptor part contributions to β. Correlation between the difference, |θ1 - θ2| and β, provides a large coefficient of determination, R2 = 0.78, which demonstrates that |θ1 - θ2| can be regarded as a potential descriptor for designing nonlinear optics (NLO) materials with D-A architecture. Clearly, we uncovered that θ1 and θ2 play a crucial role in the performance of NLO materials with D-A fragments.
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Affiliation(s)
- Bo Li
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, P. R. China
| | - Shichen Lin
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-Park, Fukuoka 816-8580, Japan
| | - Feng Long Gu
- MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, P. R. China.
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety, School of Environment, South China Normal University, Guangzhou 510006, P. R. China
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2
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Li B, Xiao T, Gu FL, Jiang J, Jia C. Torsion Angles between Donor and Acceptor Moieties as a Descriptor for Designing Nonlinear Optics and Thermally Activated Delayed Fluorescence Materials. J Phys Chem A 2023; 127:7274-7283. [PMID: 37607398 DOI: 10.1021/acs.jpca.3c04617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
The performances of nonlinear optics (NLO) and thermally activated delayed fluorescence (TADF) materials are strongly related to the torsion angles (θ) between donor (D) and acceptor (A) moieties in D-A architecture molecules. However, the underlying relationships connecting θ to the performances of NLO/TADF materials remain unclear. Herein, we present a comprehensive theoretical study on NLO/TADF materials composed of a series of D-A backbone molecules (TPAAP/TPAAQ series and AQ-DMAC/AQ-MeFAC series) to shed light on these relationships. It is found that changing θ via the intramolecular locking strategy can greatly influence values of the first hyperpolarizability (β) and singlet-triplet energy gap (ΔEST), further leading to better/worse performances of NLO/TADF materials, respectively. Intriguingly, a more detailed analysis indicates that the variation trends between θ and β/ΔEST are changeable in low θ regions, exhibiting volcano-like relationships. The large coefficients of determination (R2, ranging from 0.76 to 0.93) suggest that this experimentally measurable parameter (θ) can be used as a promising descriptor to evaluate the performances of related materials. Following the revealed θ-β/θ-ΔEST correlations, the optimal/worst torsion angles for different materials are identified. These findings highlight the importance of the intrinsic structure-performance relationships, thus providing novel design strategies for high-performance NLO/TADF materials.
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Affiliation(s)
- Bo Li
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, P. R. China
| | - Tiejun Xiao
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, P. R. China
| | - Feng Long Gu
- MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, P. R. China
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & School of Environment, South China Normal University, Guangzhou 510006, P. R. China
| | - Jun Jiang
- Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chuanyi Jia
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, P. R. China
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3
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Hood BR, de Coene Y, Torre Do Vale Froes AV, Jones CF, Beaujean P, Liégeois V, MacMillan F, Champagne B, Clays K, Fielden J. Electrochemically-Switched 2nd Order Non-Linear Optical Response in an Arylimido-Polyoxometalate with High Contrast and Cyclability. Angew Chem Int Ed Engl 2023; 62:e202215537. [PMID: 36448963 PMCID: PMC10107823 DOI: 10.1002/anie.202215537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/23/2022] [Accepted: 11/29/2022] [Indexed: 12/02/2022]
Abstract
Electrochemically switched 2nd order non-linear optical responses have been demonstrated for the first time in polyoxometalates (POMs), with an arylimido-derivative showing a leading combination of high on/off contrast (94 %), high visible transparency, and cyclability. Spectro-electrochemical and TD-DFT studies indicate that the switch-off results from weakened charge transfer (CT) character of the electronic transitions in the reduced state. This represents the first study of an imido-POM reduced state, and demonstrates the potential of POM hybrids as electrochemically activated molecular switches.
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Affiliation(s)
- Bethany R Hood
- School of Chemistry, University of EastAnglia, Norwich, NR4 7TJ, UK
| | - Yovan de Coene
- Department of Chemistry, University of Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
| | | | - Claire F Jones
- School of Chemistry, University of EastAnglia, Norwich, NR4 7TJ, UK
| | - Pierre Beaujean
- Laboratory of Theoretical Chemistry, Unit of Theoretical and Structural Physical Chemistry, NISM (Namur Institute of Structured Matter), University of Namur, Rue de Bruxelles, 61, 5000, Namur, Belgium
| | - Vincent Liégeois
- Laboratory of Theoretical Chemistry, Unit of Theoretical and Structural Physical Chemistry, NISM (Namur Institute of Structured Matter), University of Namur, Rue de Bruxelles, 61, 5000, Namur, Belgium
| | - Fraser MacMillan
- School of Chemistry, University of EastAnglia, Norwich, NR4 7TJ, UK
| | - Benoît Champagne
- Laboratory of Theoretical Chemistry, Unit of Theoretical and Structural Physical Chemistry, NISM (Namur Institute of Structured Matter), University of Namur, Rue de Bruxelles, 61, 5000, Namur, Belgium
| | - Koen Clays
- Department of Chemistry, University of Leuven, Celestijnenlaan 200D, 3001, Leuven, Belgium
| | - John Fielden
- School of Chemistry, University of EastAnglia, Norwich, NR4 7TJ, UK
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4
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Achelle S, Verbitskiy EV, Fecková M, Bureš F, Barsella A, Robin-le Guen F. V-Shaped Methylpyrimidinium Chromophores for Nonlinear Optics. Chempluschem 2021; 86:758-762. [PMID: 33973733 DOI: 10.1002/cplu.202100081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/28/2021] [Indexed: 12/16/2022]
Abstract
A series of four V-shaped methylpyrimidinium salts bearing diphenylamino-electron-donating groups appended at various pyrimidine positions were designed. These chromophores were obtained by regioselective N(1) monomethylation by methyl methanesulfonate of the pyrimidine core. Linear optical properties were studied experimentally and electronic properties were further completed by (TD)-DFT calculations. The second-order nonlinear optical (NLO) properties were also studied using electric field induced second harmonic generation (EFISH) method in chloroform, and all pyrimidinium salts exhibited μβ0 >1000×10-48 esu. The 2,4-disubstituted pyrimidinium core is preferred over 4,6-disubstitution as it enhances the NLO response and increases the dipole moment. (E,E)-2,4-Bis[4-(diphenylamino)styryl]-1-methylpyrimidin-1-ium methanesulfonate appears to be the best NLO-phore in chloroform in the series (μβ0 =2500×10-48 esu) and a figure of merit μβ0 /MW=3.4 10-48 esu mol g-1 .
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Affiliation(s)
- Sylvain Achelle
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes-UMR6226, 35000, Rennes, France
| | - Egor V Verbitskiy
- I. Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, S. Kovalevskaya Str. 22, Ekaterinburg, 620137, Russia
- Ural Federal University, Mira St. 19, Ekaterinburg, 620002, Russia
| | - Michaela Fecková
- Univ Rennes, CNRS, Institut des Sciences Chimiques de Rennes-UMR6226, 35000, Rennes, France
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic
| | - Filip Bureš
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, Pardubice, 53210, Czech Republic
| | - Alberto Barsella
- Département d'Optique ultrarapide et Nanophotonique, IPCMS, UMR CNRS 7504, Université de Strasbourg, 23 rue du Loess, BP 43, 67034, Strasbourg Cedex 2, France
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5
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Niu R, Chen S, Zhou W, Wu X, Yang J, Wang Y, Zhang X, Song Y. Modulation of trithiophene-based chalcone positional isomers by twist angle variation: Ultrafast nonlinear optical properties and excited-state dynamics. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113210] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Tejeda-Orusco V, Andreu R, Orduna J, Villacampa B, Franco S, Civera A. Twisted One-Dimensional Charge Transfer and Related Y-Shaped Chromophores with a 4 H-Pyranylidene Donor: Synthesis and Optical Properties. J Org Chem 2021; 86:3152-3163. [PMID: 33530683 PMCID: PMC9161450 DOI: 10.1021/acs.joc.0c02438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Three series of push–pull
derivatives bearing 4H-pyranylidene as electron donor
group and a variety of acceptors
were designed. On one hand, one-dimensional chromophores with a thiophene
ring (series 1H) or 5-dimethylaminothiophene moiety (series 1N) as an auxiliary donor, non-coplanar with the π-conjugated
system, were synthesized. On the other hand, related two-dimensional
(2D) Y-shaped chromophores (series 2) were also prepared
to compare how the diverse architectures affect the electrochemical,
linear, and second-order nonlinear optical (NLO) properties. The presence
of the 5-dimethylaminothiophene moiety in the exocyclic C=C
bond of the pyranylidene unit gives rise to oxidation potentials rarely
low, and the protonation (with an excess of trifluoroacetic acid)
of its derivatives results in the apparition of a new blue-shifted
band in the UV–visible spectra. The analysis of the properties
of derivatives with and without the additional thiophene ring shows
that this auxiliary donor leads to a higher NLO response, accompanied
by an enhanced transparency. Y-shaped chromophores of series 2 present a blue-shifted absorption, higher molar extinction
coefficients, and higher Eox values compared
to their linear twisted counterparts. As concerns NLO properties,
2D Y-shaped architecture gives rise to somewhat lower μβ
values (except for thiobarbiturate derivatives).
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Affiliation(s)
- Víctor Tejeda-Orusco
- Instituto de Nanociencia y Materiales de Aragón (INMA)-Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Raquel Andreu
- Instituto de Nanociencia y Materiales de Aragón (INMA)-Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Jesús Orduna
- Instituto de Nanociencia y Materiales de Aragón (INMA)-Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Belén Villacampa
- Instituto de Nanociencia y Materiales de Aragón (INMA)-Departamento de Física de la Materia Condensada, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Santiago Franco
- Instituto de Nanociencia y Materiales de Aragón (INMA)-Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Alba Civera
- Instituto de Nanociencia y Materiales de Aragón (INMA)-Departamento de Química Orgánica, CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
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7
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Gong L, Zhang X, Ma C. Computational study on the optical and NLO properties of donor–acceptor interaction molecules containing a triazolobenzothiadiazole or benzothiadiazole central acceptor core. NEW J CHEM 2021. [DOI: 10.1039/d1nj04538e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nonlinear optical properties of the studied compounds were studied with the aid of DFT calculations.
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Affiliation(s)
- Lijing Gong
- Air Force Aviation University, Changchun, 130022 Jilin, China
| | - Xiangyu Zhang
- Air Force Aviation University, Changchun, 130022 Jilin, China
| | - Cheng Ma
- Air Force Aviation University, Changchun, 130022 Jilin, China
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8
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Zhang D, Zou J, Wang W, Yu Q, Deng G, Wu J, Li ZA, Luo J. Systematic study of the structure-property relationship of a series of near-infrared absorbing push-pull heptamethine chromophores for electro-optics. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9860-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Garner MH, Solomon GC. Simultaneous Suppression of π- and σ-Transmission in π-Conjugated Molecules. J Phys Chem Lett 2020; 11:7400-7406. [PMID: 32787288 DOI: 10.1021/acs.jpclett.0c01727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Molecular dielectric materials require ostensibly conflicting requirements of high polarizability and low conductivity. As previous efforts toward molecular insulators focused on saturated molecules, it remains an open question whether π- and σ-transport can be simultaneously suppressed in conjugated systems. Here, we demonstrate that there are conjugated molecules where the σ-transmission is suppressed by destructive σ-interference, while the π-transmission can be suppressed by a localized disruption of conjugation. Using density functional theory, we study the Landauer transmission and ballistic current density, which allow us to determine how the transmission is affected by various structural changes in the molecule. We find that in para-linked oligophenyl rings the σ-transmission can be suppressed by changing the remaining hydrogens to methyl groups due to the inherent gauche-like structure of the carbon backbone within a benzene ring, similar to what was previously seen in saturated systems. At the same time, the methyl groups fulfill a dual purpose as they modulate the twist angle between neighboring phenyl rings. When neighboring rings are orthogonal to each other, the transmission through both π- and σ-systems is effectively suppressed. Alternatively, breaking conjugation in a single phenyl ring by saturating two carbons atoms with two methyl substituents on each carbon, results in suppressed π- and σ-transport independent of dihedral angle. These two strategies demonstrate that methyl-substituted oligophenyls are promising candidates for the development of molecular dielectric materials.
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Affiliation(s)
- Marc H Garner
- Nano-Science Center and Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Gemma C Solomon
- Nano-Science Center and Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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10
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Rothe C, Neusser D, Hoppe N, Dirnberger K, Vogel W, Gámez-Valenzuela S, López Navarrete JT, Villacampa B, Berroth M, Ruiz Delgado MC, Ludwigs S. Push-pull thiophene chromophores for electro-optic applications: from 1D linear to β-branched structures. Phys Chem Chem Phys 2020; 22:2283-2294. [PMID: 31922173 DOI: 10.1039/c9cp05640h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis and characterization of a novel series of push-pull chromophores bearing 1D linear and β-branched thiophenes as π-conjugated spacers between a 2,2,4,7-tetramethyl-1,2,3,4-tetrahydroquinoline electron donor unit and dicyano- and tricyanovinylene electron acceptor groups. The effect of the introduction of β-thiophenes on the linear and nonlinear (NLO) optical properties as well as electrochemical and thermal data is studied in detail by performing a comparative study between the branched and 1D linear systems. In addition, a parallel DFT computational study is used to evaluate structure-property relationships. The non-linear optical behavior of the molecules both in solution and in solid state as electro-optic (EO) films using a guest-host approach shows very promising performance for electro-optic applications with high molecular first hyperpolarizabilities (μβ) of 4840 × 10-48 esu and electro-optic coefficients r33 reaching 650 pm V-1. One highlight is that the electro-optic films of the β-branched chromophores are superior in terms of thermal stability in device operation as measured by a transmissive modified reflective Teng-Man method. This work provides guidelines for the design of improved electro-optic materials including β-branched chromophores which could be useful for practical EO applications, where both enhanced β and r33 values together with chemical and thermal stability are necessary.
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Affiliation(s)
- Christian Rothe
- IPOC-Functional Polymers, Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | - David Neusser
- IPOC-Functional Polymers, Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | - Niklas Hoppe
- Institute of Electrical and Optical Communications Engineering, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
| | - Klaus Dirnberger
- IPOC-Functional Polymers, Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | - Wolfgang Vogel
- Institute of Electrical and Optical Communications Engineering, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
| | | | | | - Belén Villacampa
- Departamento de Física de la Materia Condensada, Escuela de Ingeniería y Arquitectura - Universidad de Zaragoza, C/María de Luna, 3, 50018, Zaragoza, Spain
| | - Manfred Berroth
- Institute of Electrical and Optical Communications Engineering, University of Stuttgart, Pfaffenwaldring 47, 70569 Stuttgart, Germany
| | | | - Sabine Ludwigs
- IPOC-Functional Polymers, Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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11
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Li X, Valdiviezo J, Banziger SD, Zhang P, Ren T, Beratan DN, Rubtsov IV. Symmetry controlled photo-selection and charge separation in butadiyne-bridged donor–bridge–acceptor compounds. Phys Chem Chem Phys 2020; 22:9664-9676. [DOI: 10.1039/d0cp01235a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron transfer (ET) in donor–bridge–acceptor (DBA) compounds featuring alkyne bridges depends strongly on the torsion angle between the donor and acceptor.
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Affiliation(s)
- Xiao Li
- Department of Chemistry
- Tulane University
- New Orleans
- USA
| | | | | | - Peng Zhang
- Department of Chemistry
- Duke University
- Durham
- USA
| | - Tong Ren
- Department of Chemistry
- Purdue University
- West Lafayette
- USA
| | - David N. Beratan
- Department of Chemistry
- Duke University
- Durham
- USA
- Department of Physics, Duke University
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12
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Huang R, Liu H, Liu K, Wang G, Liu Q, Wang Z, Liu T, Miao R, Peng H, Fang Y. Marriage of Aggregation-Induced Emission and Intramolecular Charge Transfer toward High Performance Film-Based Sensing of Phenolic Compounds in the Air. Anal Chem 2019; 91:14451-14457. [DOI: 10.1021/acs.analchem.9b03096] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Rongrong Huang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Huijing Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Ke Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Gang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Quan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Zhaolong Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Rong Miao
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Haonan Peng
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, P. R. China
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13
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14
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Zaccaria F, Zuccaccia C, Cipullo R, Macchioni A. Extraction of Reliable Molecular Information from Diffusion NMR Spectroscopy: Hydrodynamic Volume or Molecular Mass? Chemistry 2019; 25:9930-9937. [PMID: 30998838 DOI: 10.1002/chem.201900812] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Indexed: 01/31/2023]
Abstract
Measuring accurate translational self-diffusion coefficients (Dt ) by NMR techniques with modern spectrometers has become rather routine. In contrast, the derivation of reliable molecular information therefrom still remains a nontrivial task. In this paper, two established approaches to estimating molecular size in terms of hydrodynamic volume (VH ) or molecular weight (M) are compared. Ad hoc designed experiments allowed the critical aspects of their application to be explored by translating relatively complex theoretical principles into practical take-home messages. For instance, comparing the Dt values of three isosteric Cp2 MCl2 complexes (Cp=cyclopentadienyl, M=Ti, Zr, Hf), having significantly different molecular mass, provided an empirical demonstration that VH is the critical molecular property affecting Dt . This central concept served to clarify the assumptions behind the derivation of Dt =ƒ(M) power laws from the Stokes-Einstein equation. Some pitfalls in establishing log (Dt ) versus log (M) linear correlations for a set of species have been highlighted by further investigations of selected examples. The effectiveness of the Stokes-Einstein equation itself in describing the aggregation or polymerization of differently shaped species has been explored by comparing, for example, a ball-shaped silsesquioxane cage with its cigar-like dimeric form, or styrene with polystyrene macromolecules.
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Affiliation(s)
- Francesco Zaccaria
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Roberta Cipullo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126, Napoli, Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
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15
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Lou AJT, Marks TJ. A Twist on Nonlinear Optics: Understanding the Unique Response of π-Twisted Chromophores. Acc Chem Res 2019; 52:1428-1438. [PMID: 31038918 DOI: 10.1021/acs.accounts.9b00077] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Materials with large nonlinear optical (NLO) response have the ability to manipulate the frequency and phase of incident light and exhibit phenomena that form the basis of modern telecommunication systems. In molecule-based materials, the second- and third-order NLO performance is related to the hyperpolarizability (β) and second hyperpolarizability (γ) of the constituent molecules. The search for higher β materials is driven by the desire to keep pace with expanding demand for high speed data transmission, while discovery of high γ chromophores is crucial for the development of emergent photonic technologies reliant on manipulation of "light-with-light". For decades, it was believed that for highest performance, organic NLO materials must be composed of planar π-system chromophores, and much exploratory research focused on subtle molecular modifications, which generally yielded incremental increases in μβ, where μ is the molecular dipole moment. The surprising recent discovery that twisted π-system chromophores can exhibit dramatically higher β values than their planar analogues has revealed a new design paradigm and stimulated the development of high performance twisted intramolecular charge transfer (TICT) chromophores, which are composed of electron-donating and electron-accepting π-substituents joined by a sterically constrained twisted biaryl fragment. In such chromophores, the twisting of the π-system enforces charge separation in the electronic ground state, leading to large dipole moments and low-lying charge-transfer excitations. This unique electronic structure forms the basis for enhanced NLO response, with an archetypal TICT chromophore, TMC-2, exhibiting very large second- ( μβ = 24 000 × 10-48 esu) and third-order (γ = 1.4 × 10-33 esu) metrics in dilute low-polarity solutions. This Account summarizes several approaches to enhance μβ in various environments, including (1) manipulating the biaryl torsional angle, (2) modifying the electron accepting fragment, (3) extending conjugation, (4) adding multiple twisted fragments, (5) modifying chromophore side chains, and (6) tuning the chromophore environment. Another set of modifications is explored to enhance γ, including (1) coupling to a cyanine dye to hybridize the cyanine and TICT orbitals, (2) manipulating the donor and acceptor group identity. The extensive modifications described above yield a detailed understanding of TICT chromophore molecular NLO response and unambiguous evidence that such chromophores have the potential to revolutionize organic electro-optics.
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Affiliation(s)
- Alexander J.-T. Lou
- Department of Chemistry and the Materials Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Tobin J. Marks
- Department of Chemistry and the Materials Research Center, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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16
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Levchenko KS, Chudov KA, Zinoviev EV, Lyssenko KA, Fakhrutdinov AN, Demin DU, Poroshin NO, Zhukova AA, Shmelin PS, Grebennikov EP. Synthesis and optical properties of new 2-oxo-4-vinyl-2H-chromene-3-carbonitrile dyes. MENDELEEV COMMUNICATIONS 2019. [DOI: 10.1016/j.mencom.2019.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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17
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Kumata K, Hatori A, Yamasaki T, Zhang Y, Mori W, Fujinaga M, Xie L, Nengaki N, Zhang MR. Synthesis and evaluation of 4-(2-fluoro-4-[ 11C]methoxyphenyl)-5-((2-methylpyridin-4-yl)methoxy)picolinamide for PET imaging of the metabotropic glutamate receptor 2 in the rat brain. Bioorg Med Chem 2018; 27:483-491. [PMID: 30611634 DOI: 10.1016/j.bmc.2018.12.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/13/2018] [Accepted: 12/15/2018] [Indexed: 12/21/2022]
Abstract
Metabotropic glutamate receptor 2 (mGluR2) has been suggested as a therapeutic target for treating schizophrenia-like symptoms arising from increased glutamate transmission in the human forebrain. However, no reliable positron emission tomography (PET) radiotracer allowing for in vivo visualization of mGluR2 in the human brain is currently available. In this study, we synthesized 4-(2-fluoro-4-[11C]methoxyphenyl)-5-((2-methylpyridin-4-yl)methoxy)picolinamide ([11C]1) and evaluated its potential as a PET tracer for imaging mGluR2 in the rodent brain. Compound 1, a negative allosteric modulator (NAM) of mGluR2, showed high in vitro binding affinity (IC50: 26 nM) for mGluR2 overexpressed in human cells. [11C]1 was synthesized by O-[11C]methylation of the phenol precursor 2 with [11C]methyl iodide. After the reaction, HPLC purification and formulation, [11C]1 of 7.4 ± 2.8 GBq (n = 8) was obtained from [11C]carbon dioxide of 22.5 ± 4.8 GBq (n = 8) with >99% radiochemical purity and 70 ± 32 GBq/μmol (n = 8) molar activity at the end of synthesis. In vitro autoradiography for rat brains showed that [11C]1 binding was heterogeneously distributed in the cerebral cortex, striatum, hippocampus, and cerebellum. This pattern is consistent with the regional distribution pattern of mGluR2 in the rodent brain. The radioactivity was significantly reduced by self- or MNI-137 (a mGluR2 NAM) blocking. Small-animal PET studies indicated a low in vivo specific binding of [11C]1 in the rat brain. The brain uptake was increased in a P-glycoprotein and breast cancer resistant protein double knockout mouse, when compared to a wild-type mouse. While [11C]1 presented limited potential as an in vivo PET tracer for mGluR2, we suggested that it can be used as a lead compound for developing new radiotracers with improved in vivo brain properties.
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Affiliation(s)
- Katsushi Kumata
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Akiko Hatori
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Tomoteru Yamasaki
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Yiding Zhang
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Wakana Mori
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Masayuki Fujinaga
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Lin Xie
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan
| | - Nobuki Nengaki
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan; SHI Accelerator Services Co., 1-17-6 Osaki, Shinagawa-ku, Tokyo 141-0032, Japan
| | - Ming-Rong Zhang
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba 263-8555, Japan.
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18
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Lou AJT, Righetto S, Cariati E, Marks TJ. Organic Salts Suppress Aggregation and Enhance the Hyperpolarizability of a π-Twisted Chromophore. Chemistry 2018; 24:15801-15805. [PMID: 30161274 DOI: 10.1002/chem.201804365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Indexed: 02/02/2023]
Abstract
Twisted intramolecular charge-transfer (TICT) chromophores exhibit extraordinary hyperpolarizabilities, β, and are therefore promising for electro-optic technologies. Nevertheless, centrosymmetric aggregate formation severely diminishes β in concentrated solutions or in polymer matrices. Herein, the remarkable effects of organic salts on the linear and nonlinear optical response of a high β benzimidazolium-based TICT chromophore, B2TMC-2, are reported. Addition of Bu4 P+ Br- to B2TMC-2 solution in CHCl3 induces a halochromic blueshift, primarily reflecting interactions between Bu4 P+ Br- and the B2TMC-2 cationic portion. DC electric-field induced second-harmonic generation (EFISH) measurements on B2TMC-2+Bu4 P+ Br- solution reveal a large μβ=-22,160×10-48 esu, unprecedented for any chromophore with such a broad optical transparency window. Moreover, Bu4 P+ Br- is shown to suppress B2TMC-2 aggregation, thereby preserving high μβ in concentrated solutions. This phenomenon should be applicable to many other NLO chromophores.
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Affiliation(s)
- Alexander J-T Lou
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston IL, 60208, USA
| | - Stefania Righetto
- Department of Chemistry, Università degli Studi di Milano and INSTM RU, via Golgi 19, 20133, Milano, Italy
| | - Elena Cariati
- Department of Chemistry, Università degli Studi di Milano and INSTM RU, via Golgi 19, 20133, Milano, Italy
| | - Tobin J Marks
- Department of Chemistry, Northwestern University, 2145 Sheridan Rd., Evanston IL, 60208, USA
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19
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Lou AJT, Righetto S, Barger C, Zuccaccia C, Cariati E, Macchioni A, Marks TJ. Unprecedented Large Hyperpolarizability of Twisted Chromophores in Polar Media. J Am Chem Soc 2018; 140:8746-8755. [PMID: 29909629 DOI: 10.1021/jacs.8b04320] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Twisted intramolecular charge transfer (TICT) chromophores exhibit uniquely large second-order optical nonlinearities ( μβ). However, their promise as electro-optic (E-O) materials is yet untapped, reflecting a strong tendency to aggregate in low-polarity media, leading to a dramatic fall in μβ. Until now, TICT chromophores in deaggregating polar solvents suffered decreased response due to polarity-driven changes in electronic structure. Here we report a new series of benzimidazolium-based TICT chromophores with interaryl torsional angles in the range of 64-77°. The most twisted, B2TMC-2, exhibits a large μβvec = -26,000 × 10-48 esu (at 1907 nm) in dilute nonpolar CH2Cl2 solution, which is maintained in polar DMF ( μβvec= -20,370 × 10-48 esu) as measured by DC electric field-induced second harmonic generation (EFISH). Sterically enforced interaryl torsional angles are confirmed by single-crystal X-ray diffraction and solution phase Nuclear Overhauser Effect (NOE) NMR, and spectroscopic characterization reveals a zwitterionic/aromatic ground state electronic structure associated with the high μβ. We show that increasingly disrupted conjugation is correlated with increased μβ even at intermediate twist angles. The excellent performance and reduced aggregation in polar solvents opens new avenues for bridging microscopic and macroscopic chromophore performance.
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Affiliation(s)
- Alexander J-T Lou
- Department of Chemistry and the Materials Research Center , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Stefania Righetto
- Dipartimento di Chimica dell'Università di Milano and Unità di Ricerca dell'INSTM di Milano , Via Golgi 19 , I-20133 Milano , Italy
| | - Christopher Barger
- Department of Chemistry and the Materials Research Center , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC , Università degli Studi di Perugia , Via Elce di Sotto , 8 I-06123 Perugia , Italy
| | - Elena Cariati
- Dipartimento di Chimica dell'Università di Milano and Unità di Ricerca dell'INSTM di Milano , Via Golgi 19 , I-20133 Milano , Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC , Università degli Studi di Perugia , Via Elce di Sotto , 8 I-06123 Perugia , Italy
| | - Tobin J Marks
- Department of Chemistry and the Materials Research Center , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
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20
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Sachdeva T, Bishnoi S, Milton MD. Multi-Stimuli Response Displaying Novel Phenothiazine-Based Non-Planar D-π-A Hydrazones: Synthesis, Characterization, Photophysical and Thermal studies. ChemistrySelect 2017. [DOI: 10.1002/slct.201702684] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Tanisha Sachdeva
- Department of Chemistry; University of Delhi; Delhi- 110007 India
| | - Swati Bishnoi
- Department of Chemistry; University of Delhi; Delhi- 110007 India
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21
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Theoretical investigation on second-order nonlinear optical properties of ruthenium alkynyl-dihydroazulene/vinylheptafulvene complexes. J Mol Graph Model 2017; 77:363-371. [PMID: 28946068 DOI: 10.1016/j.jmgm.2017.09.012] [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: 08/11/2017] [Revised: 09/12/2017] [Accepted: 09/13/2017] [Indexed: 11/22/2022]
Abstract
Ru metal acetylide electron donor-acceptor complexes have important applications in the field of nonlinear optics. Herein, in this work, a series of half-sandwich ruthenium-based Cp*(dpe)Ru ([Ru*]) metal complexes with the dihydroazulene/vinylheptafulvene (DHA/VHF) have been investigated by density functional theory (DFT) calculations. The results showed that the position of the [Ru*] acetylide functionality, either para or meta on the phenylene ring to the DHA/VHF core (1c/1o and 2c/2o), and additional a p-phenylene spacer (3c/3o) had a great influence on the second-order nonlinear optical (NLO) responses. The systems 1 and 3 can significantly increased second-order NLO responses compared with system 2. It was attributed to the more obvious charge transfer along y-axis, which is from [Ru*] acetylide functionality to DHA, accompanied by a significant decrease of the transition energy according electron density difference maps and time-dependent DFT calculations. The βvec values of the open-ring complexes were larger than the corresponding closed-ring complexes owing to the smaller HOMO-LUMO gap in the open-ring complexes. It was also because of the smaller BLA values in open-ring complexes, which had stronger π-conjugation. Especially, the change ratio of βvec value of system 2 was the largest due to the fact that their charge transfers degree varied greatly. In addition, the frequency-dependent NLO properties of the studied complexes were evaluated at 0.0239 a.u. and 0.0340 a.u. The calculation results demonstrated that the magnitude of the frequency-dependent first hyperpolarizability increased with the increasing frequency. We believe that our present work will be beneficial for further theoretical and experimental studies on large second-order NLO responses of metal complexes.
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22
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Al-Yasari A, Van Steerteghem N, Kearns H, El Moll H, Faulds K, Wright JA, Brunschwig BS, Clays K, Fielden J. Organoimido-Polyoxometalate Nonlinear Optical Chromophores: A Structural, Spectroscopic, and Computational Study. Inorg Chem 2017; 56:10181-10194. [DOI: 10.1021/acs.inorgchem.7b00708] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ahmed Al-Yasari
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
- College
of Pharmacy, University of Kerbala, Kerbala, Iraq
| | - Nick Van Steerteghem
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - Hayleigh Kearns
- Department
of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Hani El Moll
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Karen Faulds
- Department
of Pure and Applied Chemistry, University of Strathclyde, 99 George Street, Glasgow, G1 1RD, United Kingdom
| | - Joseph A. Wright
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Bruce S. Brunschwig
- Beckman
Institute, California Institute of Technology, 1200 East California Blvd., MC 139-74, Pasadena, California 91125, United States
| | - Koen Clays
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - John Fielden
- School
of Chemistry, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
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23
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Zafra JL, Molina Ontoria A, Mayorga Burrezo P, Peña-Alvarez M, Samoc M, Szeremeta J, Ramírez FJ, Lovander MD, Droske CJ, Pappenfus TM, Echegoyen L, López Navarrete JT, Martín N, Casado J. Fingerprints of Through-Bond and Through-Space Exciton and Charge π-Electron Delocalization in Linearly Extended [2.2]Paracyclophanes. J Am Chem Soc 2017; 139:3095-3105. [DOI: 10.1021/jacs.6b12520] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- José L. Zafra
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Agustín Molina Ontoria
- IMDEA-Nanociencia,
C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
| | - Paula Mayorga Burrezo
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | | | - Marek Samoc
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
| | - Janusz Szeremeta
- Advanced
Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50370 Wroclaw, Poland
| | - Francisco J. Ramírez
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Matthew D. Lovander
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Christopher J. Droske
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Ted M. Pappenfus
- Division
of Science and Mathematics, University of Minnesota, Morris, Minnesota 56267, United States
| | - Luis Echegoyen
- Department
of Chemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Juan T. López Navarrete
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
| | - Nazario Martín
- IMDEA-Nanociencia,
C/Faraday 9, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain
| | - Juan Casado
- Department
of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, Málaga 29071, Spain
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24
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Zhou J, Wang J, Zhao J, Jin K, Sun J, Guo X, Fang Q. A new fluoropolymer having triazine rings as a dielectric material: synthesis and properties. Polym Chem 2017. [DOI: 10.1039/c7py01207a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel fluoropolymer having triazine rings and thermo-crosslinkable benzocyclobutene units is prepared by a facile phase transfer catalyzed interfacial polycondensation reaction between a diphenol and a dichloro-s-triazine.
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Affiliation(s)
- Junfeng Zhou
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Jiajia Wang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Jiaqing Zhao
- National Engineering Laboratory of TFT-LCD Materials and Technologies
- Department of Electronic Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Kaikai Jin
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Jing Sun
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Xiaojun Guo
- National Engineering Laboratory of TFT-LCD Materials and Technologies
- Department of Electronic Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Qiang Fang
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
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25
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Zinna F, Bruhn T, Guido CA, Ahrens J, Bröring M, Di Bari L, Pescitelli G. Circularly Polarized Luminescence from Axially Chiral BODIPY DYEmers: An Experimental and Computational Study. Chemistry 2016; 22:16089-16098. [PMID: 27658919 DOI: 10.1002/chem.201602684] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Indexed: 11/10/2022]
Abstract
With our new home-built circularly polarized luminescence (CPL) instrument, we measured fluorescence and CPL spectra of the enantiomeric pairs of two quasi-isomeric BODIPY DYEmers 1 and 2, endowed with axial chirality. The electronic circular dichroism (ECD) and CPL spectra of these atropisomeric dimers are dominated by the exciton coupling between the main π-π* transitions (550-560 nm) of the two BODIPY rings. Compound 1 has strong ECD and CPL spectra (glum =4×10-3 ) well reproduced by TD-DFT and SCS-CC2 (spin-component scaled second-order approximate coupled-cluster) calculations using DFT-optimized ground- and excited-state structures. Compound 2 has weaker ECD and CPL spectra (glum =4×10-4 ), partly due to the mutual cancellation of electric-electric and electric-magnetic exciton couplings, and partly to its conformational freedom. This compound is computationally very challenging. Starting from the optimized excited-state geometries, we predicted the wrong sign for the CPL band of 2 using TD-DFT with the most recommended hybrid and range-separated functionals, whereas SCS-CC2 or a DFT functional with full exact exchange provided the correct sign.
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Affiliation(s)
- Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124, Pisa, Italy
| | - Torsten Bruhn
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Ciro A Guido
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124, Pisa, Italy
| | - Johannes Ahrens
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany.,Department of Organic Chemistry, Weizmann Institute of Science, 76100, Rehovot, Israel
| | - Martin Bröring
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124, Pisa, Italy.
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124, Pisa, Italy.
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26
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27
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Tang R, Li Z. Second-Order Nonlinear Optical Dendrimers and Dendronized Hyperbranched Polymers. CHEM REC 2016; 17:71-89. [DOI: 10.1002/tcr.201600065] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Runli Tang
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials; Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
| | - Zhen Li
- Hubei Key Lab on Organic and Polymeric Optoelectronic Materials; Department of Chemistry; Wuhan University; Wuhan 430072 P.R. China
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28
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Chen H, Wang L, Wang WY, Qiu YQ, Xie HM. The effect of heterocyclic π bridges on second order nonlinear optical properties of compounds formed between ferrocenyl and corannulenyl. RSC Adv 2016. [DOI: 10.1039/c6ra22020g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Among D–π–A type compounds, when imidazole acts as a π bridge (endo/exo-3), the βtot values are almost 2 times as large as when the phenyl acts as a π bridge (endo/exo-2).
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Affiliation(s)
- He Chen
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Li Wang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Wen-Yong Wang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Yong-Qing Qiu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Hai-Ming Xie
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
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29
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Si Y, Zhao X, Su Z, Yang G. Theoretical study on thiophene-based double helicenes with intrinsic large second-order nonlinear optical response. RSC Adv 2016. [DOI: 10.1039/c6ra18421a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
In view of the intrinsic non-centrosymmetric electronic structures, high transparency, and the large second-order NLO response values, the studied thiophene-based double helicenes are expected to be excellent second-order NLO materials.
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Affiliation(s)
- Yanling Si
- College of Resource and Environmental Science
- Jilin Agricultural University
- Changchun 130118
- China
| | - Xinyu Zhao
- College of Resource and Environmental Science
- Jilin Agricultural University
- Changchun 130118
- China
| | - Ziyi Su
- School of Computer Science & Information Technology
- Northeast Normal University
- Changchun
- 130117 China
| | - Guochun Yang
- Centre for Advanced Optoelectronic Functional Materials Research
- Key Laboratory for UV Light-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
- Changchun 130024
- China
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30
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Al-Yasari A, Van Steerteghem N, El Moll H, Clays K, Fielden J. Donor–acceptor organo-imido polyoxometalates: high transparency, high activity redox-active NLO chromophores. Dalton Trans 2016; 45:2818-22. [DOI: 10.1039/c6dt00115g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Organoimido polyoxometalates are a powerful new class of acceptor for non-linear optics. As a basis for donor–acceptor systems, they offer an excellent transparency/non-linearity trade-off and break through empirical performance limits for comparable organic materials.
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Affiliation(s)
- Ahmed Al-Yasari
- School of Chemistry
- University of East Anglia
- Norwich
- UK
- College of Pharmacy
| | | | - Hani El Moll
- School of Chemistry
- University of East Anglia
- Norwich
- UK
| | - Koen Clays
- Department of Chemistry
- University of Leuven
- B-3001 Leuven
- Belgium
| | - John Fielden
- School of Chemistry
- University of East Anglia
- Norwich
- UK
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31
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Ay E, Hobeika N, Chaumeil H, Tschamber T, Jin M, Versace DL, Malval JP. Rotamerism-driven large magnitude host–guest binding change in a crown ether derivatized pyridinium-phenolate series. Chem Commun (Camb) 2016; 52:4652-4. [DOI: 10.1039/c6cc00684a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A large magnitude host–guest binding change driven by transducting rotamerism effects is demonstrated within a crown ether modified pyridinium-phenolate series.
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Affiliation(s)
- Emel Ay
- Laboratoire de Chimie Organique et Bioorganique
- Université de Haute Alsace
- ENSCMu
- Mulhouse
- France
| | - Nelly Hobeika
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361
- Université de Haute Alsace
- Mulhouse
- France
| | - Hélène Chaumeil
- Laboratoire de Chimie Organique et Bioorganique
- Université de Haute Alsace
- ENSCMu
- Mulhouse
- France
| | - Théophile Tschamber
- Laboratoire de Chimie Organique et Bioorganique
- Université de Haute Alsace
- ENSCMu
- Mulhouse
- France
| | - Ming Jin
- School of Materials & Engineering
- Tongji University
- Shanghai
- China
| | - Davy-Louis Versace
- Institut de Chimie et des Matériaux Paris-Est CNRS-UMR 7182
- Paris-Est Créteil Val de Marne
- Thiais
- France
| | - Jean-Pierre Malval
- Institut de Science des Matériaux de Mulhouse CNRS-UMR 7361
- Université de Haute Alsace
- Mulhouse
- France
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32
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Lee SH, Jazbinsek M, Hauri CP, Kwon OP. Recent progress in acentric core structures for highly efficient nonlinear optical crystals and their supramolecular interactions and terahertz applications. CrystEngComm 2016. [DOI: 10.1039/c6ce00707d] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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33
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Abstract
Modulation of first hyperpolarizability on varying structure of the bridge.
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Affiliation(s)
- Ria Sinha Roy
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
| | - Prasanta K. Nandi
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Howrah 711 103
- India
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