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Bianco A, Ferrari G, Castagna R, Rossi A, Carminati M, Pariani G, Tommasini M, Bertarelli C. Light-induced dipole moment modulation in diarylethenes: a fundamental study. Phys Chem Chem Phys 2018; 18:31154-31159. [PMID: 27812576 DOI: 10.1039/c6cp05609a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The dipole moment of photochromic diarylethenes is determined in solution for both the coloured and uncoloured forms by measuring the capacitance of a capacitor filled with a photochromic solution as a dielectric material. Diarylethenes with different substituents are investigated and the modulation of the dipole moment is related to their chemical structures. We determine a modulation of the dipole moment up to 4 Debye. We discuss the model used to obtain the dipole moment from the capacitance measurements and we compare the experimental results with the outcomes from DFT calculations. The results highlight the importance of conformational effects in the description of the dipole moment of diarylethenes.
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Affiliation(s)
- Andrea Bianco
- INAF - Osservatorio Astronomico di Brera, via Bianchi 46, 23807, Merate, Italy.
| | - Giorgio Ferrari
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Via Ponzio, 34/5, 20133 Milano, Italy
| | - Rossella Castagna
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Andrea Rossi
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Via Ponzio, 34/5, 20133 Milano, Italy
| | - Marco Carminati
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Via Ponzio, 34/5, 20133 Milano, Italy
| | - Giorgio Pariani
- INAF - Osservatorio Astronomico di Brera, via Bianchi 46, 23807, Merate, Italy.
| | - Matteo Tommasini
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
| | - Chiara Bertarelli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica "G. Natta", Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy and Center for Nano Science and Technology, @PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milano, Italy
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52
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Loupas A, Regeta K, Allan M, Gorfinkiel JD. Shape and Core-Excited Resonances in Thiophene. J Phys Chem A 2018; 122:1146-1155. [DOI: 10.1021/acs.jpca.7b11865] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexandra Loupas
- Laboratório de Colisões Atómicas e Moleculares, CEFITEC, Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus
de Caparica, Lisboa, 2829-516 Portugal
- School of Physical Sciences, The Open University,
Walton Hall, Milton Keynes MK7 6AA, United Kingdom
| | - Khrystyna Regeta
- Department of Chemistry, University of Fribourg, Fribourg 1700, Switzerland
| | - Michael Allan
- Department of Chemistry, University of Fribourg, Fribourg 1700, Switzerland
| | - Jimena D. Gorfinkiel
- School of Physical Sciences, The Open University,
Walton Hall, Milton Keynes MK7 6AA, United Kingdom
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53
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Ulusoy IS, Stewart Z, Wilson AK. The role of the CI expansion length in time-dependent studies. J Chem Phys 2018; 148:014107. [DOI: 10.1063/1.5004412] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Inga S. Ulusoy
- Department of Chemistry, Michigan State University, 578 S Shaw Lane, East Lansing, Michigan 48824-1322, USA
| | - Zachary Stewart
- Department of Chemistry, Michigan State University, 578 S Shaw Lane, East Lansing, Michigan 48824-1322, USA
| | - Angela K. Wilson
- Department of Chemistry, Michigan State University, 578 S Shaw Lane, East Lansing, Michigan 48824-1322, USA
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54
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Jones DB, Blanco F, García G, da Costa RF, Kossoski F, Varella MTDN, Bettega MHF, Lima MAP, White RD, Brunger MJ. Elastic scattering and vibrational excitation for electron impact onpara-benzoquinone. J Chem Phys 2017; 147:244304. [DOI: 10.1063/1.5010831] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- D. B. Jones
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
| | - F. Blanco
- Departamento de Física Atómica, Molecular y Nuclear, Universidad Complutense de Madrid, Madrid E-28040, Spain
| | - G. García
- Instituto de Física Fundamental, CSIC, Serano 113-bis, E-28006 Madrid, Spain
| | - R. F. da Costa
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
- Centro de Ciências Exatas, Departamento de Física, Universidade Federal do Espírito Santo, 29075-901 Vitória, Espírito Santo, Brazil
| | - F. Kossoski
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - M. T. do N. Varella
- Instituto de Física, Universidade de São Paulo, Rua do Matão 1731, São Paulo 05508-090, Brazil
| | - M. H. F. Bettega
- Departamento de Física, Universidade Federal do Paraná, CP 19044, Curitiba, Paraná 81531-990, Brazil
| | - M. A. P. Lima
- Instituto de Física “Gleb Wataghin,” Universidade Estadual de Campinas, Campinas, São Paulo 13083-859, Brazil
| | - R. D. White
- College of Science and Engineering, James Cook University, Townsville, Qld 4811, Australia
| | - M. J. Brunger
- College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, South Australia 5001, Australia
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55
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Zhu L, Shi X, Sun Y, Zhang Q, Wang W. The growth mechanism of polycyclic aromatic hydrocarbons from the reactions of anthracene and phenanthrene with cyclopentadienyl and indenyl. CHEMOSPHERE 2017; 189:265-276. [PMID: 28942252 DOI: 10.1016/j.chemosphere.2017.09.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 06/07/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are highly toxic, mutagenic and/or carcinogenic to humans. To reduce the emission of PAHs, it's significant and indispensable to explore the PAH formation mechanism. In the present work, the growth mechanism of PAHs from the reactions of anthracene and phenanthrene with cyclopentadienyl and indenyl radicals was investigated with the aid of high-accuracy quantum chemistry calculation. The rate constants of key elementary steps were calculated by meaning of the canonical variation transition-state (CVT) theory with the small curvature tunneling (SCT) correction over the temperature range of 400-1400 K. The mechanism of the PAH formation involves in six elementary steps, addition reaction, ring closure, intramolecular H-shift, cleavage of CC bond, intramolecular H-shift and unimolecular elimination of CH3 or H. The cleavage of CC bond is the rate-determining step due to the high barrier. The formation of PAHs from the reactions of anthracene with cyclopentadienyl and indenyl radicals is easier than that from the reactions of phenanthrene.
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Affiliation(s)
- Ledong Zhu
- Environment Research Institute, Shandong University, Jinan, 250100, PR China
| | - Xiangli Shi
- Environment Research Institute, Shandong University, Jinan, 250100, PR China
| | - Yanhui Sun
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China
| | - Qingzhu Zhang
- Environment Research Institute, Shandong University, Jinan, 250100, PR China.
| | - Wenxing Wang
- Environment Research Institute, Shandong University, Jinan, 250100, PR China
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56
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Van Dyck C, Marks TJ, Ratner MA. Chain Length Dependence of the Dielectric Constant and Polarizability in Conjugated Organic Thin Films. ACS NANO 2017; 11:5970-5981. [PMID: 28575578 DOI: 10.1021/acsnano.7b01807] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Dielectric materials are ubiquitous in optics, electronics, and materials science. Recently, there have been new efforts to characterize the dielectric performance of thin films composed of molecular assemblies. In this context, we investigate here the relationship between the polarizability of the constituent molecules and the film dielectric constant, using periodic density functional theory (DFT) calculations, for polyyne and saturated alkane chains. In particular, we explore the implication of the superlinear chain length dependence of the polarizability, a specific feature of conjugated molecules. We show and explain from DFT calculations and a simple depolarization model that this superlinearity is attenuated by the collective polarization. However, it is not completely suppressed. This confers a very high sensitivity of the dielectric constant to the thin film thickness. This latter can increase by a factor of 3-4 at reasonable coverages, by extending the molecular length. This significantly limits the decline of the thin film capacitance with the film thickness. Therefore, the conventional fit of the capacitance versus thickness is not appropriate to determine the dielectric constant of the film. Finally, we show that the failures of semilocal approximations of the exchange-correlation functional lead to a very significant overestimation of this effect.
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Affiliation(s)
- Colin Van Dyck
- 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
| | - Mark A Ratner
- Department of Chemistry and the Materials Research Center, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
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57
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Fransson T, Rehn DR, Dreuw A, Norman P. Static polarizabilities and C6 dispersion coefficients using the algebraic-diagrammatic construction scheme for the complex polarization propagator. J Chem Phys 2017. [DOI: 10.1063/1.4977039] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Thomas Fransson
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Dirk R. Rehn
- Department of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Andreas Dreuw
- Interdisciplinary Center for Scientific Computing, University of Heidelberg, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
| | - Patrick Norman
- Department of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-10691 Stockholm, Sweden
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58
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Loupas A, Gorfinkiel JD. Resonances in low-energy electron scattering from para-benzoquinone. Phys Chem Chem Phys 2017; 19:18252-18261. [DOI: 10.1039/c7cp02916k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Shape and core-excited resonances ofpara-benzoquinone identified and characterized in electron scatteringR-matrix calculations.
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Affiliation(s)
- Alexandra Loupas
- School of Physical Sciences
- The Open University
- Milton Keynes
- UK
- Departamento de Física, Faculdade de Ciências e Tecnologia
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59
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Maekawa S, Moorthi K, Shigeta Y. Refractive indices of organo-metallic and -metalloid compounds: A long-range corrected DFT study. J Comput Chem 2016; 37:2759-2769. [PMID: 27709623 DOI: 10.1002/jcc.24501] [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: 07/29/2016] [Revised: 09/14/2016] [Accepted: 09/15/2016] [Indexed: 11/08/2022]
Abstract
Refractive indices of metal- and metalloid-containing compounds are systematically evaluated using the Lorentz-Lorenz equation with polarizabilities obtained via density functional theory (DFT). Among exchange-correlation functionals studied, the long-range corrected (LC) fuctionals yield the lowest errors for the polarizabilities of gaseous compounds and refractive indices of liquids. The LC-DFT predicts very well the wavelength dependence of refractive indices. A scheme for computing Abbe numbers of organometallic and organometaloid compounds is proposed and a refractive index - Abbe number plot for 80 compounds is constructed. The compounds containing heavier metals tend to have higher refractive index and lower Abbe number, but several outliers, among them Te(CH3 )2 , Ni(PF3 )4 , Sb(C2 F3 )3 , Hg(C2 F3 )2 , are found. For Hg(C2 F3 )2 , also the effect of intramolecular and intermolecular degrees of freedom on polarizability is investigated. The absolute relative error in polarizability decreases from 5.7% for monomer model to 1.7% when a dimer model (derived from the available experimental crystal data) is employed. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Shintaro Maekawa
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8577, Japan.,R&D Center, Mitsui Chemicals, Inc, Sodegaura, 299-0265, Japan
| | | | - Yasuteru Shigeta
- Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8577, Japan.,Center for Computational Sciences, University of Tsukuba, Tsukuba, 305-8577, Japan
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60
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Hadji D, Rahmouni A. Molecular structure, linear and nonlinear optical properties of some cyclic phosphazenes: A theoretical investigation. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.10.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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61
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Čurík R, Paidarová I, Allan M, Čársky P. Joint Experimental and Theoretical Study on Vibrational Excitation Cross Sections for Electron Collisions with Diacetylene. J Phys Chem A 2014; 118:9734-44. [DOI: 10.1021/jp5073186] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roman Čurík
- J.
Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223 Prague 8, Czech Republic
| | - Ivana Paidarová
- J.
Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223 Prague 8, Czech Republic
| | - Michael Allan
- Department
of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Petr Čársky
- J.
Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Dolejškova 3, 18223 Prague 8, Czech Republic
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62
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63
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Blair SA, Thakkar AJ. Relating polarizability to volume, ionization energy, electronegativity, hardness, moments of momentum, and other molecular properties. J Chem Phys 2014; 141:074306. [DOI: 10.1063/1.4893178] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Shamus A. Blair
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
| | - Ajit J. Thakkar
- Department of Chemistry, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
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64
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65
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66
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Kryzhevoi NV, Tashiro M, Ehara M, Cederbaum LS. Interatomic relaxation effects in double core ionization of chain molecules. J Chem Phys 2012; 137:154316. [DOI: 10.1063/1.4759078] [Citation(s) in RCA: 13] [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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67
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Friese DH, Winter NOC, Balzerowski P, Schwan R, Hättig C. Large scale polarizability calculations using the approximate coupled cluster model CC2 and MP2 combined with the resolution-of-the-identity approximation. J Chem Phys 2012; 136:174106. [DOI: 10.1063/1.4704788] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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68
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Photochromism into optics: Opportunities to develop light-triggered optical elements. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2011. [DOI: 10.1016/j.jphotochemrev.2011.05.003] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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69
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Enhancing the light driven modulation of the refractive index in organic photochromic materials: A quantum chemical strategy. J Photochem Photobiol A Chem 2010. [DOI: 10.1016/j.jphotochem.2010.06.009] [Citation(s) in RCA: 9] [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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70
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Callierotti G, Bianco A, Castiglioni C, Bertarelli C, Zerbi G. Modulation of the Refractive Index by Photoisomerization of Diarylethenes: Theoretical Modeling. J Phys Chem A 2008; 112:7473-80. [DOI: 10.1021/jp8032929] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guido Callierotti
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico di Milano, 20133 Milano, Italy, and INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Via E. Bassini 15, 20133 Milano, Italy
| | - Andrea Bianco
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico di Milano, 20133 Milano, Italy, and INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Via E. Bassini 15, 20133 Milano, Italy
| | - Chiara Castiglioni
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico di Milano, 20133 Milano, Italy, and INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Via E. Bassini 15, 20133 Milano, Italy
| | - Chiara Bertarelli
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico di Milano, 20133 Milano, Italy, and INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Via E. Bassini 15, 20133 Milano, Italy
| | - Giuseppe Zerbi
- Dipartimento di Chimica, Materiali ed Ingegneria Chimica, Politecnico di Milano, 20133 Milano, Italy, and INAF-IASF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Via E. Bassini 15, 20133 Milano, Italy
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71
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Electronic and vibrational polarizabilities of the twenty naturally occurring amino acids. Biophys Chem 2008; 132:139-47. [DOI: 10.1016/j.bpc.2007.11.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2007] [Revised: 10/31/2007] [Accepted: 11/01/2007] [Indexed: 11/21/2022]
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72
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Alvarado YJ, Cubillán N, Leal MG, Labarca PH, Michelena E, Marrero Ponce Y. Experimental Determination of the Electronic Polarizability of Quinoline and Isoquinoline in Solution by Three New Strategies. J SOLUTION CHEM 2007. [DOI: 10.1007/s10953-007-9171-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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73
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Tahery R, Satherley J, Schiffrin DJ. Dependence of the Critical Temperature on Molecular Parameters. J Phys Chem B 2007; 111:5941-5. [PMID: 17497767 DOI: 10.1021/jp066737d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
At the critical temperature the surface tension between coexisting liquid and vapor phases must be zero, and the repulsive contributions associated with cavity formation must exactly counterbalance those from interactions of a molecule in the cavity and the bulk. An expression for the critical temperature of pure fluids in terms of the parameters of scaled particle theory (SPT) has been obtained, and the calculated critical temperatures are compared with experimental data for a range of pure fluids. These include noble and diatomic gases, short and medium length hydrocarbons, aromatic compounds, halogenated compounds, oxygen-containing compounds, and water. Considering the simplicity of this approach, a remarkably good correlation between calculated and experimental values is found for most of these fluids.
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Affiliation(s)
- Reza Tahery
- Chemical Engineering Department, Amir Kabir University of Technology, Tehran, Iran
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74
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Librando V, Alparone A. STRUCTURE, VIBRATIONAL PROPERTIES AND POLARIZABILITIES OF METHYLNAPHTHALENE ISOMERS. A QUANTUM-MECHANICAL APPROACH. Polycycl Aromat Compd 2007. [DOI: 10.1080/10406630601144770] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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75
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Milani A, Brambilla L, Del Zoppo M, Zerbi G. Raman Dispersion and Intermolecular Interactions in Unsubstituted Thiophene Oligomers. J Phys Chem B 2007; 111:1271-6. [PMID: 17249721 DOI: 10.1021/jp066933k] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a critical analysis of the Raman spectra of unsubstituted oligothiophenes and rediscuss the well-known Raman dispersion of conjugated systems explicitly considering intermolecular interactions. Temperature-dependent Raman spectra and DFT calculations for dimers of different chain lengths show that the effect of intermolecular interactions on the frequency and intensity of carbon-carbon (CC) stretching modes is non-negligible. This effect has not been considered in previous works and might explain many spectral features of this class of compounds which are not completely interpreted by the usual models. Both intensities and frequencies are significantly affected by intermolecular interactions showing that molecular self-organization should be taken into account in future spectroscopic studies of conjugated molecules. In particular, the interactions among molecules cause an upward shift of the frequency of the R mode (amplitude mode) which can explain the lack of frequency dispersion with conjugation length of oligothiophenes, as experimentally observed for solid-state samples at room temperature.
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Affiliation(s)
- Alberto Milani
- Center for NanoEngineered MAterials and Surfaces (NEMAS), Dipartimento di Chimica, Materiali ed Ingegneria Chimica G. Natta, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
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76
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Nabetani Y, Yoshikawa H, Masuhara H. Selective Optical Trapping and Deposition of Polymer and Aromatic Molecules from Binary Mixed Solution. J Phys Chem B 2006; 110:21399-402. [PMID: 17064084 DOI: 10.1021/jp065628w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have demonstrated size-selective optical trapping and deposition of polymer and aromatic molecules from binary mixed solution. As a near-infrared laser beam is tightly focused in polystyrene and perylene mixed solution and dropped on a glass substrate, a molecular assembly is deposited at the laser focus and fixed on the substrate. The fluorescence spectrum of the deposited microassembly depends on the laser power; perylene monomer fluorescence is dominant in the case of high laser power, whereas excimer emission of perylene crystal is observed in the case of low laser power. This suggests that polystyrene molecules are preferentially deposited by focusing a higher laser power so that the ratio of polystyrene and perylene in the assembly can be controlled by laser power. This mechanism can be explained in view of the molecular size selectivity in optical trapping.
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Affiliation(s)
- Yu Nabetani
- Department of Applied Physics, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka, 565-0861, Japan
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77
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Zevatskii YE, Lysova SS. Relationship between the molar volume and enthalpy of formation, polarizability, and ionization potential of CHNO-containing organic substances. RUSS J APPL CHEM+ 2006. [DOI: 10.1134/s1070427206060188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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78
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Alvarado YJ, Caldera-Luzardo J, De La Cruz C, Ferrer-Amado G, Michelena E, Silva P. Volumetric, Electric, and Magnetic Properties of Thioxanthen-9-one in Aprotic Solvents as Revealed by High-Precision Densitometry, High-Accuracy Refractometry and Magnetic Susceptibility Measurements and by DFT Calculations. J SOLUTION CHEM 2006. [DOI: 10.1007/s10953-006-8937-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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79
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Pederson MR, Baruah T, Allen PB, Schmidt C. Density-Functional-Based Determination of Vibrational Polarizabilities in Molecules within the Double-Harmonic Approximation: Derivation and Application. J Chem Theory Comput 2005; 1:590-6. [DOI: 10.1021/ct050061t] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark R. Pederson
- Center for Computational Materials Science, Code 6390, Naval Research Laboratory, Washington, DC 20375, Department of Electrical and Computer Engineering, Howard University, Washington, DC 20059, and Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800
| | - Tunna Baruah
- Center for Computational Materials Science, Code 6390, Naval Research Laboratory, Washington, DC 20375, Department of Electrical and Computer Engineering, Howard University, Washington, DC 20059, and Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800
| | - Philip B. Allen
- Center for Computational Materials Science, Code 6390, Naval Research Laboratory, Washington, DC 20375, Department of Electrical and Computer Engineering, Howard University, Washington, DC 20059, and Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800
| | - Christian Schmidt
- Center for Computational Materials Science, Code 6390, Naval Research Laboratory, Washington, DC 20375, Department of Electrical and Computer Engineering, Howard University, Washington, DC 20059, and Department of Physics and Astronomy, State University of New York, Stony Brook, New York 11794-3800
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van Faassen M, de Boeij PL, van Leeuwen R, Berger JA, Snijders JG. Application of time-dependent current-density-functional theory to nonlocal exchange-correlation effects in polymers. J Chem Phys 2003. [DOI: 10.1063/1.1529679] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Alvarado YJ, Soscún H, Velazco W, Labarca PH, Cubillan N, Hernández J. Dipole polarizability of the pyrazabole molecule in solution. J PHYS ORG CHEM 2002. [DOI: 10.1002/poc.555] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Alvarado YJ, Cubillan N, Labarca PH, Karam A, Arrieta F, Castellano O, Soscún H. Static and dynamic dipole polarizabilities of 2- and 3-methylthiophenes in solution: experimental and theoretical determination. J PHYS ORG CHEM 2002. [DOI: 10.1002/poc.457] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ewig CS, Waldman M, Maple JR. Ab Initio Atomic Polarizability Tensors for Organic Molecules. J Phys Chem A 2002. [DOI: 10.1021/jp011135+] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Soscún H, Alvarado Y, Hernández J, Hernández P, Atencio R, Hinchliffe A. Experimental and theoretical determination of the dipole polarizability of dibenzothiophene. J PHYS ORG CHEM 2001. [DOI: 10.1002/poc.407] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rabolt J. Giuseppe Zerbi: A biography. J Mol Struct 2000. [DOI: 10.1016/s0022-2860(99)00420-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Negri F, Ancilotto F, Mistura G, Toigo F. Ab initiopotential energy surfaces of He-CO2 and Ne-CO2 van der Waals complexes. J Chem Phys 1999. [DOI: 10.1063/1.480021] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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Luis JM, Duran M, Andrés JL, Champagne B, Kirtman B. Finite field treatment of vibrational polarizabilities and hyperpolarizabilities: On the role of the Eckart conditions, their implementation, and their use in characterizing key vibrations. J Chem Phys 1999. [DOI: 10.1063/1.479373] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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