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Castet F, Tonnelé C, Muccioli L, Champagne B. Predicting the Second-Order Nonlinear Optical Responses of Organic Materials: The Role of Dynamics. Acc Chem Res 2022; 55:3716-3726. [PMID: 36469424 DOI: 10.1021/acs.accounts.2c00616] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The last 30 years have witnessed an ever-growing application of computational chemistry for rationalizing the nonlinear optical (NLO) responses of organic chromophores. More specifically, quantum chemical calculations proved highly helpful in gaining fundamental insights into the factors governing the magnitude and character of molecular first hyperpolarizabilities (β), be they either intrinsic to the chromophore molecular structure and arising from symmetry, chemical substitution, or π-electron delocalization, or induced by external contributions such as the laser probe or solvation and polarization effects. Most theoretical reports assumed a rigid picture of the investigated systems, the NLO responses being computed solely at the most stable geometry of the chromophores. Yet, recent developments combining classical molecular dynamics (MD) simulations and DFT calculations have evidenced the significant role of structural fluctuations, which may induce broad distributions of NLO responses, and even generate them in some instances.This Account presents recent case studies in which theoretical simulations have highlighted these effects. The discussion specifically focuses on the simulation of the second-order NLO properties that can be measured experimentally either from Hyper-Rayleigh Scattering (HRS) or Electric-Field Induced Second Harmonic Generation (EFISHG). More general but technical topics concerning several aspects of the calculations of hyperpolarizabilities are instead discussed in the Supporting Information.Selected examples include organic chromophores, photochromic systems, and ionic complexes in the liquid phase, for which the effects of explicit solvation, concentration, and chromophore aggregation are emphasized, as well as large flexible systems such as peptide chains and pyrimidine-based helical polymers, in which the relative variations of the responses were shown to be several times larger than their average values. The impact of geometrical fluctuations is also illustrated for supramolecular architectures with the examples of nanoparticles formed by organic dipolar dyes in water solution, whose soft nature allows for large shape variations translating into huge fluctuations in time of their NLO response, and of self-assembled monolayers (SAMs) based on indolino-oxazolidine or azobenzene switches, in which the geometrical distortions of the photochromic molecules, as well as their orientational and positional disorder within the SAMs, highly impact their NLO response and contrast upon switching. Finally, the effects of the rigidity and fluidity of the surrounding are evidenced for NLO dyes inserted in phospholipid bilayers.
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Affiliation(s)
- Frédéric Castet
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, F-33400Talence, France
| | - Claire Tonnelé
- Donostia International Physics Center (DIPC), Manuel Lardizabal Ibilbidea 4, 20018Donostia, Euskadi, Spain
| | - Luca Muccioli
- Department of Industrial Chemistry "'Toso Montanari"', University of Bologna, Viale Risorgimento 4, 40136Bologna, Italy
| | - Benoît Champagne
- Unité de Chimie Physique Théorique et Structurale, Chemistry Department, Namur Institute of Structured Matter, University of Namur, Rue de Bruxelles 61, 5000Namur, Belgium
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2
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Baillargeon P, Seidler T, Champagne B, Soldera A. Polar and Helical Isomorphous Crystals of Proline Derivatives: Influence of a Fluorine Atom on the Electric Susceptibility. CHEMISTRY AFRICA 2021. [DOI: 10.1007/s42250-021-00236-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
AbstractTwo novel nonlinear optical isomorphous crystals of proline derivatives with alkyne functionality have been obtained (Boc-L-ProNH(CH2)2CCH and Boc-cis-4-fluoro-L-ProNH(CH2)2CCH). Both derivatives, which differ only by the substitution of a H atom to a F atom, adopt the same polar and columnar right-handed helix arrangement in the crystalline state. In addition, adjacent polar helical columns all point in the same direction, thus generating a macrodipole and a crystalline system conducive for second harmonic generation (SHG) properties. This isomorphous crystal system constitutes an interesting tool to study the effect of the fluorine atom on the dipole moment and on the first hyperpolarizability. Starting from the PBC optimized geometries of the crystals, the macroscopic second-order nonlinearity, χ(2), of the newly synthesized crystals has been estimated by quantum chemical calculations. These χ(2) responses are of the same order of magnitude as those of inorganic proline derivatives while smaller than those observed in crystals of push–pull π-conjugated molecules.
Graphic Abstract
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3
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Okuda H, Koyama Y, Uchida S, Michinobu T, Sogawa H, Takata T. Reversible Transformation of a One-Handed Helical Foldamer Utilizing a Planarity-Switchable Spacer and C2-Chiral Spirobifluorene Units. ACS Macro Lett 2015; 4:462-466. [PMID: 35596314 DOI: 10.1021/acsmacrolett.5b00176] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polymeric quaterthiophenes containing optically active C2-chiral spirobifluorene skeletons were synthesized as a new type of helical foldamers, and their higher-order structures were investigated. Oxidization of quaterthiophene moieties caused the spacer units to be in planar structure, leading the conformation of the polymer to be a coil-shaped, rigid helix. This transformation was reversibly performed.
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Affiliation(s)
- Hitoshi Okuda
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yasuhito Koyama
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Satoshi Uchida
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hiromitsu Sogawa
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Toshikazu Takata
- Department
of Organic and
Polymeric Materials, Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Sahu H, Gupta S, Gaur P, Panda AN. Structure and optoelectronic properties of helical pyridine–furan, pyridine–pyrrole and pyridine–thiophene oligomers. Phys Chem Chem Phys 2015. [DOI: 10.1039/c5cp02872h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The optoelectronic properties of helical structures pyridine–furan, pyridine–pyrrole and pyridine–thiophene oligomers are explored using density functional theory methods.
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Affiliation(s)
- Harikrishna Sahu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Shashwat Gupta
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Priyank Gaur
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
| | - Aditya N. Panda
- Department of Chemistry
- Indian Institute of Technology Guwahati
- India
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5
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Yi Z, Okuda H, Koyama Y, Seto R, Uchida S, Sogawa H, Kuwata S, Takata T. Exact helical polymer synthesis by a two-point-covalent-linking protocol between C2-chiral spirobifluorene and C2- or Cs-symmetric anthraquinone monomers. Chem Commun (Camb) 2015; 51:10423-6. [DOI: 10.1039/c5cc02086g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two types of one-handed exact helical polymers, coil- and screw-shaped polymers, were selectively synthesized by a two-point-covalent-linking protocol.
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Affiliation(s)
- Zhaozhong Yi
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Hitoshi Okuda
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Yasuhito Koyama
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Ryota Seto
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Satoshi Uchida
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Hiromitsu Sogawa
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Shigeki Kuwata
- Department of Applied Chemistry
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Toshikazu Takata
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
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6
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A theoretical investigation of one-dimensional lithium-bonded chain: enhanced first hyperpolarizability and little red-shift. J Mol Model 2014; 20:2532. [PMID: 25433600 DOI: 10.1007/s00894-014-2532-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 11/12/2014] [Indexed: 10/24/2022]
Abstract
We present a theoretical investigation of the electric properties of two kinds of one-dimensional lithium bonded chains: (NC-Li)n and (NC-CC-Li)n (n = 1-8). The resulting (NC-Li)n and (NC-CC-Li)n were found to exhibit enhanced first hyperpolarizabilities (β 0) with increasing n, and a slight change in the absorption maximum wavelength λmax at the crucial transition. Comparing with (NC-Li)n, (NC-CC-Li)n exhibited particularly drastically enhanced β 0 values due to clearly enhanced coupled oscillators and double-degenerated charge transitions. β 0 is known to be the microscopic origin of the second-order non-linear optical (NLO) property, and λmax is an approximate measure of the transparency achievable, thus both are important indices of high-performance NLO molecules. Therefore, our investigations into one-dimensional lithium bond chains will be beneficial to understanding the relationship between β 0 and λmax, thus aiding the design of one-dimensional NLO materials with excellent transparence-efficiency.
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Duboisset J, Matar G, Besson F, Ficheux D, Benichou E, Russier-Antoine I, Jonin C, Brevet PF. Second harmonic generation from tryptophan-rich short peptides: W(n)K(m) and gramicidin A. J Phys Chem B 2014; 118:10413-8. [PMID: 25144248 DOI: 10.1021/jp506416s] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report the first hyperpolarizability of a series of tryptophan-rich short peptides with the respective sequence KWK, KWWK, KWWWK, KWWKWWK, where W and K stand for tryptophan and lysine. The measurements were performed with the technique of hyper-Rayleigh scattering in the bulk of an aqueous Tris buffer solution at a pH of 8.5 and a salt concentration of 150 mM at the non-resonant fundamental wavelength of 784 nm. The first hyperpolarizability of the different peptides follows a simple additive model scaling with the number of tryptophan residues contained in the peptide. However, it appears that the first hyperpolarizability response of a single tryptophan residue in the peptide strongly differs from that of an isolated tryptophan. Hence, it is therefore demonstrated that the local environment of the tryptophan residues within the peptide strongly influences its nonlinear optical response. A comparison with the first hyperpolarizability of the natural peptide gramicidin A measured in trifluoroethanol (TFE) further confirms the key role of the local environment on the first hyperpolarizability of tryptophan residues in peptides.
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Affiliation(s)
- J Duboisset
- Institut Lumière Matière, ILM UMR CNRS 5306, Université Claude Bernard Lyon 1 , 10 Rue Ada Byron, 69622 Villeurbanne Cedex, France
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8
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Ma F, Bai DS, Xu HL. Hydrogen-bond-directed-linking solving transparence-efficiency tradeoff in nonlinear optical molecule. J Mol Graph Model 2014; 53:161-167. [PMID: 25145287 DOI: 10.1016/j.jmgm.2014.07.015] [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: 06/20/2014] [Revised: 07/20/2014] [Accepted: 07/28/2014] [Indexed: 11/16/2022]
Abstract
It is well known that settling transparency-efficiency tradeoff is important to design nonlinear optical (NLO) materials. In this work, we constructed one-dimensional polymeric cyanoacetylene (NCCCH)n by hydrogen-bond-directed-linking to understand this tradeoff from molecular level. Results show that the first hyperpolarizability of (NCCCH)n (n=2-8) gradually increased with the increase of n, and what is more important is that the red-shifts, associated with the increase of n, were very little. It is proposed that these polymeric structures possess double-degenerated charge transitions, which contribute to the hyperpolarizability in an additive fashion, and that the coupled oscillators are gradually improved, which lead to the increase of the first hyperpolarizability. Therefore, we propose the hydrogen-bond-directed-linking idea is helpful to develop the potential high-performance NLO materials.
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Affiliation(s)
- Fang Ma
- School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China.
| | - Dong-Sheng Bai
- School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China
| | - Hong-Liang Xu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China.
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9
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De Mitri N, Prampolini G, Monti S, Barone V. Structural, dynamic and photophysical properties of a fluorescent dye incorporated in an amorphous hydrophobic polymer bundle. Phys Chem Chem Phys 2014; 16:16573-87. [PMID: 24988373 PMCID: PMC4618303 DOI: 10.1039/c4cp01828a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The properties of a low molecular weight organic dye, namely 4-naphthyloxy-1-methoxy-2,2,6,6-tetramethylpiperidine, covalently bound to an apolar polyolefin were investigated by means of a multi-level approach, combining classical molecular dynamics simulations, based on purposely parameterized force fields, and quantum mechanical calculations based on density functional theory (DFT) and its time-dependent extension (TD-DFT). The structure and dynamics of the dye in its embedding medium were analyzed and discussed taking the entangling effect of the surrounding polymer into account, and also by comparing the results to those obtained for a different environment, i.e. toluene solution. Finally, the influence was investigated of long lived cages found in the polymeric embedding on photophysical properties, in terms of the slow and fast dye's internal dynamics, by comparing computed IR and UV spectra with their experimental counterparts.
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Affiliation(s)
- N De Mitri
- Scuola Normale Superiore, piazza dei Cavalieri 7, I-56126 Pisa, Italy
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10
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Prampolini G, Monti S, De Mitri N, Barone V. Evidences of long lived cages in functionalized polymers: Effects on chromophore dynamic and spectroscopic properties. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.04.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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11
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Loison C, Nasir MN, Benichou E, Besson F, Brevet PF. Multi-scale modeling of mycosubtilin lipopeptides at the air/water interface: structure and optical second harmonic generation. Phys Chem Chem Phys 2014; 16:2136-48. [DOI: 10.1039/c3cp53101e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Murugan NA, Apostolov R, Rinkevicius Z, Kongsted J, Lindahl E, Ågren H. Association Dynamics and Linear and Nonlinear Optical Properties of an N-Acetylaladanamide Probe in a POPC Membrane. J Am Chem Soc 2013; 135:13590-7. [DOI: 10.1021/ja407326n] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- N. Arul Murugan
- Division
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Rossen Apostolov
- PDC
Center for High Performance Computing, School of Computer Science
and Communication, Royal Institute of Technology, SE-10691 Stockholm, Sweden
- Department
of Biochemistry and Biophysics, Science for Life Laboratory, Stockholm University, SE-171 21 Solna, Sweden
| | - Zilvinas Rinkevicius
- Division
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Jacob Kongsted
- Department
of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Erik Lindahl
- Department
of Biochemistry and Biophysics, Science for Life Laboratory, Stockholm University, SE-171 21 Solna, Sweden
- Theoretical
and
Computational Biophysics, Department of Theoretical Physics, Royal Institute of Technology, Stockholm, Sweden
| | - Hans Ågren
- Division
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-10691 Stockholm, Sweden
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13
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Design and structural regularities of zigzag-like supramolecular 1D assemblies of polyhalogenated 2,6-, 2,4-diaminopyridines and 18-crown-6. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.08.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Molecular motions contributions to optical nonlinearity of N-benzyl-2-methyl-4-nitroaniline studied by temperature-dependent FT-IR, 1H NMR spectroscopy and DFT calculations. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.08.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Champagne B, Plaquet A, Pozzo JL, Rodriguez V, Castet F. Nonlinear Optical Molecular Switches as Selective Cation Sensors. J Am Chem Soc 2012; 134:8101-3. [DOI: 10.1021/ja302395f] [Citation(s) in RCA: 234] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Benoît Champagne
- Laboratoire de Chimie Théorique,
UCPTS, Facultés Universitaires Notre-Dame de la Paix (FUNDP),
rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Aurélie Plaquet
- Laboratoire de Chimie Théorique,
UCPTS, Facultés Universitaires Notre-Dame de la Paix (FUNDP),
rue de Bruxelles 61, B-5000 Namur, Belgium
| | - Jean-Luc Pozzo
- Université de Bordeaux,
Institut des Sciences Moléculaires (ISM), UMR 5255 CNRS, Cours
de la Libération, 351, F-33405 Talence CEDEX, France
| | - Vincent Rodriguez
- Université de Bordeaux,
Institut des Sciences Moléculaires (ISM), UMR 5255 CNRS, Cours
de la Libération, 351, F-33405 Talence CEDEX, France
| | - Frédéric Castet
- Université de Bordeaux,
Institut des Sciences Moléculaires (ISM), UMR 5255 CNRS, Cours
de la Libération, 351, F-33405 Talence CEDEX, France
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Piela K, Szostak MM. Electrical Anharmonicity and Vibronic Couplings Contributions to Optical Nonlinearity of N-Benzyl-2-methyl-4-nitroaniline Crystal Studied by FT-IR, Polarized FT-NIR, Resonance Raman and UV–Vis Spectroscopy. J Phys Chem A 2012; 116:1730-45. [PMID: 22263616 DOI: 10.1021/jp211476c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katarzyna Piela
- Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże
Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - M. Magdalena Szostak
- Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże
Wyspiańskiego 27, 50-370 Wrocław, Poland
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Szostak MM, Chojnacki H, Piela K, Okwieka-Lupa U, Bidzińska E, Dyrek K. Helical Superstructure and Charged Polarons Contributions to Optical Nonlinearity of 2-Methyl-4-nitroaniline Crystals Studied by Resonance Raman, Electron Paramagnetic Resonance, Circular Dichroism Spectroscopies, and Quantum Chemical Calculations. J Phys Chem A 2011; 115:7448-55. [DOI: 10.1021/jp204168s] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- M. Magdalena Szostak
- Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskieg 27, PL-50-370 Wrocław, Poland
| | - Henryk Chojnacki
- Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskieg 27, PL-50-370 Wrocław, Poland
| | - Katarzyna Piela
- Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskieg 27, PL-50-370 Wrocław, Poland
| | - Urszula Okwieka-Lupa
- Institute of Physical and Theoretical Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskieg 27, PL-50-370 Wrocław, Poland
| | - Ewa Bidzińska
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, PL-30-060 Kraków, Poland
| | - Krystyna Dyrek
- Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, PL-30-060 Kraków, Poland
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18
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Polymorphism and cold crystallization in optically nonlinear N-benzyl-2-methyl-4-nitroaniline crystal studied by X-ray diffraction, calorimetry and Raman spectroscopy. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.01.066] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Theoretical study of structure and non-linear optical properties of Zn(II) porphyrin adsorbed on carbon nanotubes. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.08.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Ni BB, Yan Q, Ma Y, Zhao D. Recent advances in arylene ethynylene folding systems: Toward functioning. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2010.02.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Okwieka U, Hołderna-Natkaniec K, Misiaszek T, Medycki W, Baran J, Magdalena Szostak M. Dynamical disorder in 2-methyl-4-nitroaniline and its deuterated analogue crystals studied by Fourier transform infrared and nuclear magnetic resonance. J Chem Phys 2009; 131:144505. [DOI: 10.1063/1.3243855] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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