1
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Kediya S, Manhas A, Jha PC. Benzothiazole‐based chemosensor: a quick dip into its anion sensing mechanism. J PHYS ORG CHEM 2021. [DOI: 10.1002/poc.4283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Siddhi Kediya
- School of Applied Material Sciences Central University of Gujarat Gandhinagar India
| | - Anu Manhas
- Department of Chemistry Pandit Deendayal Energy University (formerly PDPU) Gandhinagar India
| | - Prakash C. Jha
- School of Applied Material Sciences Central University of Gujarat Gandhinagar India
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2
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Theoretical insights into the spectral properties of a salicylideneaniline-based fluorescence chemosensor (SB1) and its sensing mechanism for cyanide anion. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113295] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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3
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Combined ultrafast spectroscopic and TDDFT theoretical studies on dual fluorescence emissions promoted by ligand-to-metal charge transfer (LMCT) excited states of tungsten-containing organometallic complexes. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Zarate X, Rodriguez-Serrano A, Schott E, Tatchen J. DFT/MRCI assessment of the excited-state interplay in a coumarin-schiff Mg 2+ fluorescent sensor. J Comput Chem 2020; 41:136-146. [PMID: 31646679 DOI: 10.1002/jcc.26086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/21/2019] [Accepted: 09/24/2019] [Indexed: 11/11/2022]
Abstract
Fluorescent sensors with selectivity and sensitivity to metal ions are an active field in supramolecular chemistry for biochemical, analytical, and environmental problems. Mg2+ is one of the most abundant divalent ions in the cell, and it plays a critical role in many biological processes. Coumarin-based sensors are widely used as desirable fluorophore and binding moieties showing a remarkable sensitivity and fluorometric enhancement for Mg2+ . In this work, density functional theory/multireference configuration interaction (DFT/MRCI) calculations were performed in order to understand the sensing behavior of the organic fluorescent sensor 7-hydroxy-4-methyl-8-((2-(pyridin-2-yl)hydrazono)methyl)-2H-chromen-2-one (PyHC) in ethanol to solvated Mg2+ ions. The computed optical properties reproduce well-reported experimental data. Our results suggest that after photoexcitation of the free PyHC, a photo-induced electron transfer (PET) mechanism may compete with the fluorescence decay to the ground state. In contrast, this PET channel is no longer available in the complex with Mg2+ making the emissive decay more efficient. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Ximena Zarate
- Instituto de Ciencias Químicas Aplicadas, Theoretical and Computational Chemistry Center, Facultad de Ingeniería, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Santiago, Chile
| | | | - Eduardo Schott
- Departamento de Química Inorgánica, UC Energy Research Center, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile. Avda. Vicuña Mackenna, 4860, Santiago, Chile.,Millenium Nuclei on Catalytic Processes Towards Sustainable Chemistry (CSC), Chile
| | - Jörg Tatchen
- Department of Computational Biochemistry, Universität Duisburg-Essen, 45117, Essen, Germany
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5
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Liu X, Yin H, Li H, Shi Y. Altering intra- to inter-molecular hydrogen bonding by dimethylsulfoxide: A TDDFT study of charge transfer for coumarin 343. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 177:1-5. [PMID: 28107683 DOI: 10.1016/j.saa.2017.01.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 01/11/2017] [Accepted: 01/11/2017] [Indexed: 06/06/2023]
Abstract
DFT and TDDFT methods were carried out to investigate the influences of intramolecular and intermolecular hydrogen bonding on excited state charge transfer for coumarin 343 (C343). Intramolecular hydrogen bonding is formed between carboxylic acid group and carbonyl group in C343 monomer. However, in dimethylsulfoxide (DMSO) solution, DMSO 'opens up' the intramolecular hydrogen bonding and forms solute-solvent intermolecular hydrogen bonded C343-DMSO complex. Analysis of frontier molecular orbitals reveals that intramolecular charge transfer (ICT) occurs in the first excited state both for C343 monomer and complex. The results of optimized geometric structures indicate that the intramolecular hydrogen bonding interaction is strengthened while the intermolecular hydrogen bonding is weakened in excited state, which is confirmed again by monitoring the shifts of characteristic peaks of infrared spectra. We demonstrated that DMSO solvent can not only break the intramolecular hydrogen bonding to form intermolecular hydrogen bonding with C343 but also alter the mechanism of excited state hydrogen bonding strengthening.
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Affiliation(s)
- Xiaochun Liu
- Institute of Atomic and Molecular Physics, Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
| | - Hang Yin
- Institute of Atomic and Molecular Physics, Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
| | - Hui Li
- Institute of Atomic and Molecular Physics, Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
| | - Ying Shi
- Institute of Atomic and Molecular Physics, Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China.
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6
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Reiter K, Kühn M, Weigend F. Vibrational circular dichroism spectra for large molecules and molecules with heavy elements. J Chem Phys 2017; 146:054102. [DOI: 10.1063/1.4974897] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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7
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Deng J, Shi G, Zhou T. Colorimetric assay for on-the-spot alcoholic strength sensing in spirit samples based on dual-responsive lanthanide coordination polymer particles with ratiometric fluorescence. Anal Chim Acta 2016; 942:96-103. [DOI: 10.1016/j.aca.2016.09.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 08/26/2016] [Accepted: 09/05/2016] [Indexed: 12/24/2022]
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8
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Milne BF, Norman P. Resonant-Convergent PCM Response Theory for the Calculation of Second Harmonic Generation in Makaluvamines A–V: Pyrroloiminoquinone Marine Natural Products from Poriferans of Genus Zyzzya. J Phys Chem A 2015; 119:5368-76. [DOI: 10.1021/jp5102362] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Bruce F. Milne
- Nano-Bio
Spectroscopy Group and ETSF Scientific Development Centre, Department
of Materials Physics, University of the Basque Country, CFM CSIC-UPV/EHU-MPC and DIPC, Avenida de Tolosa 72, E-20018 Donostia, Spain
- Centre
for Computational Physics, Department of Physics, University of Coimbra, Rua Larga, 3004-516 Coimbra, Portugal
| | - Patrick Norman
- Department
of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden
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9
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Plaquet A, Champagne B, Castet F. Nonlinear optical molecular switches for alkali ion identification. Molecules 2014; 19:10574-86. [PMID: 25050856 PMCID: PMC6271445 DOI: 10.3390/molecules190710574] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 06/23/2014] [Accepted: 07/07/2014] [Indexed: 11/16/2022] Open
Abstract
This work demonstrates by means of DFT and ab initio calculations that recognition of alkali cations can be achieved by probing the variations of the second-order nonlinear optical properties along the commutation process in spiropyran/merocyanine systems. Due to the ability of the merocyanine isomer to complex metal cations, the switching between the two forms is accompanied by large contrasts in the quadratic hyperpolarizability that strongly depend on the size of the cation in presence. Exploiting the nonlinear optical responses of molecular switches should therefore provide powerful analytical tools for detecting and identifying metal cations in solution.
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Affiliation(s)
- Aurélie Plaquet
- Laboratoire de Chimie Théorique, UCPTS, Université de Namur (UNamur), rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Benoît Champagne
- Laboratoire de Chimie Théorique, UCPTS, Université de Namur (UNamur), rue de Bruxelles 61, B-5000 Namur, Belgium.
| | - Frédéric Castet
- Institut des Sciences Moléculaires (ISM), Université de Bordeaux, UMR 5255 CNRS, Cours de la Libération 351, F-33405 Talence Cedex, France.
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10
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Chen JS, Yuan MH, Wang JP, Yang Y, Chu TS. Sensing Mechanism for Biothiols Chemosensor DCO: Roles of Excited-State Hydrogen-Bonding and Intramolecular Charge Transfer. J Phys Chem A 2014; 118:8986-95. [DOI: 10.1021/jp501946n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jun-Sheng Chen
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- Department
of Chemical Physics, Lund University, 22100 Lund, Sweden
| | - Ming-Hu Yuan
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Jia-Pei Wang
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Yang Yang
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Tian-Shu Chu
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- Institute
for Computational Sciences and Engineering, Laboratory of New Fiber
Materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, People’s Republic of China
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11
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Chen JS, Zhou PW, Yang SQ, Fu AP, Chu TS. Sensing mechanism for a fluoride chemosensor: invalidity of excited-state proton transfer mechanism. Phys Chem Chem Phys 2013; 15:16183-9. [PMID: 23996092 DOI: 10.1039/c3cp51482j] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Our density functional theory (DFT)/time-dependent DFT calculations for the fluoride anion sensor, 5,7-dibromo-8-tert-butyldimethylsilyloxy-2-methylquinoline (DBM), suggested a different sensing mechanism from the experimentally proposed one (Chem. Commun., 2011, 47, 7098). Instead of the formation of fluoride-hydrogen-bond complex (DBMOHF) and excited-state proton transfer mechanism, the theoretical results predicted a sensing mechanism based on desilylation reaction and intramolecular charge transfer (ICT). The fluoride anion reacted with DBM and formed an anion (DBMO), with the ICT causing a red shift in the absorbance and emission spectra of the latter. The calculated vertical excitation energies in the ground and first excited states of both DBM and DBMO, as well as the calculated (1)H NMR spectra, significantly reproduced the experimental measurements, providing additional proofs for our proposed sensing mechanism for DBM.
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Affiliation(s)
- Jun-Sheng Chen
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, People's Republic of China.
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12
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Cornard JP, Lapouge C, André E. pH influence on the complexation site of Al(III) with protocatechuic acid. A spectroscopic and theoretical approach. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 108:280-287. [PMID: 23501940 DOI: 10.1016/j.saa.2013.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 02/01/2013] [Accepted: 02/07/2013] [Indexed: 06/01/2023]
Abstract
Electronic spectroscopy techniques with the aid of quantum chemical calculations, and notably the Time-Dependent Density Functional Theory, can be used to probe the structure of metal complexes in solution. Here, we report the characterization of Al(III)-protocatechuate in aqueous solution, at pH=6.5. The exploitation of the UV-vis spectra of the system by chemometric methods highlights the formation of a single complex of stoichiometry 1:1. From different structural hypothesis, the comparison of theoretical and experimental spectra shows that Al(III) forms a monodentate complex with the carboxylate function. This hypothesis is confirmed by the calculation of the complexation reaction pathways. Previous studies report the formation of a chelate involving the ortho-dihydroxyl group, at pH=3.5. These results illustrate the important dependence of the protonation state of the carboxylic function on the Al(III) fixation site on the studied ligand.
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Affiliation(s)
- Jean-Paul Cornard
- LASIR, CNRS UMR8516, Université des Sciences et Technologies de Lille, Bât C5, 59 655 Villeneuve d'Ascq Cedex, France.
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13
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Chen JS, Zhou PW, Li GY, Chu TS, He GZ. Fluoride anion sensing mechanism of 2-ureido-4[1H]-pyrimidinone quadruple hydrogen-bonded supramolecular assembly: photoinduced electron transfer and partial configuration change. J Phys Chem B 2013; 117:5212-21. [PMID: 23577690 DOI: 10.1021/jp4017757] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The fluoride anion sensing mechanism of 6-methyl-5-(9-methylene-anthracene)-(2-butylureido-4[1H]-pyrimidinone) (AnUP) has been investigated using the DFT/TDDFT method. The theoretical results indicate that the proton of the N3-H3 group in pyrimidine moiety is captured by the added fluoride anion and then deprotonated. The calculated vertical excitation energies of AnUP-dimer and its deprotonated form agree well with the experimental results. The molecular orbital analysis demonstrates that the first excited state (S1) of AnUP-dimer is a local excited state with a π-π* transition, whereas for the deprotonated form, S1 is a completely charge-separation state and is responsible for the photoinduced electron transfer (PET) process. The PET process from anthracene to the pyrimidine moiety leads to the fluorescence quenching.
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Affiliation(s)
- Jun-Sheng Chen
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023, People's Republic of China
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14
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Chen JS, Zhao GJ, Cook TR, Han KL, Stang PJ. Photophysical Properties of Self-Assembled Multinuclear Platinum Metallacycles with Different Conformational Geometries. J Am Chem Soc 2013; 135:6694-702. [DOI: 10.1021/ja402421w] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jun-Sheng Chen
- State Key Laboratory of Molecular
Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s
Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, People’s
Republic of China
| | - Guang-Jiu Zhao
- State Key Laboratory of Molecular
Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s
Republic of China
| | - Timothy R. Cook
- Department
of Chemistry, University of Utah, Salt
Lake City, Utah 84112, United
States
| | - Ke-Li Han
- State Key Laboratory of Molecular
Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s
Republic of China
| | - Peter J. Stang
- Department
of Chemistry, University of Utah, Salt
Lake City, Utah 84112, United
States
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15
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Trivalent organophosphorus reagent induced pinacol rearrangement of 4H-cyclopenta[2,1-b:3,4-b′]dithiophen-4-one. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Eilmes A. A DFT/TDDFT study on spectral effects of metal ion interactions with benzofurazan-based fluorescent probes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 98:27-34. [PMID: 22982385 DOI: 10.1016/j.saa.2012.08.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 07/23/2012] [Accepted: 08/12/2012] [Indexed: 06/01/2023]
Abstract
CAM-B3LYP DFT/TDDFT calculations have been performed on two fluorescent benzofurazan derivatives and their complexes with metal ions (Zn(2+), Na(+), K(+), Mg(2+) and Ca(2+)). Optimized structures of complexes and binding energies have been determined. Calculated vertical transition energies have been compared to available experimental data. Only one ligand binds effectively Zn(2+) ion allowing metal orbitals to participate in frontier molecular orbitals which results in significant shifts in absorption and emission spectra. Modified structure of the other ligand makes ion binding less effective. It has been shown that proper reproduction of transition energies requires accounting for state-specific solvation.
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Affiliation(s)
- Andrzej Eilmes
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
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17
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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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18
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Van Mierloo S, Liégeois V, Kudrjasova J, Botek E, Lutsen L, Champagne B, Vanderzande D, Adriaensens P, Maes W. Combined experimental-theoretical NMR study on 2,5-bis(5-aryl-3-hexylthiophen-2-yl)-thiazolo[5,4-d]thiazole derivatives for printable electronics. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50:379-387. [PMID: 22508501 DOI: 10.1002/mrc.3812] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Revised: 01/12/2012] [Accepted: 02/21/2012] [Indexed: 05/31/2023]
Abstract
Four 2,5-bis(5-aryl-3-hexylthiophen-2-yl)thiazolo[5,4-d]thiazole derivatives have been synthesized and thoroughly characterized. The extended aromatic core of the molecules was designed to enhance the charge transport characteristics, and solubilizing hexyl side chains were introduced on the thiophene subunits to enable possible integration of these semiconducting small molecules in printable electronics. Complete elucidation of the chemical structures by detailed one-dimensional/two-dimensional NMR spectroscopy is described, providing interesting input for chemical shift prediction software as well, because limited experimental data on these types of compounds are currently available. Furthermore, theoretical calculations have assisted experimental observations--giving support for the chemical shift assignment and providing a springboard for future screening and predictions--demonstrating the benefits of a coordinated theoretical-experimental approach.
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Affiliation(s)
- S Van Mierloo
- Hasselt University, Institute for Materials Research (IMO-IMOMEC Ass. Lab.), Design & Synthesis of Organic Semiconductors (DSOS), Agoralaan 1-Building D, B-3590, Diepenbeek, Belgium
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19
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Diliën H, Marin L, Botek E, Champagne B, Lemaur V, Beljonne D, Lazzaroni R, Cleij TJ, Maes W, Lutsen L, Vanderzande D, Adriaensens PJ. Fingerprints for Structural Defects in Poly(thienylene vinylene) (PTV): A Joint Theoretical–Experimental NMR Study on Model Molecules. J Phys Chem B 2011; 115:12040-50. [DOI: 10.1021/jp206663v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- H. Diliën
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - L. Marin
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - E. Botek
- Laboratoire de Chimie Théorique, Facultés Universitaires Notre-Dame de la Paix (FUNDP), Rue de Bruxelles 61, 5000 Namur, Belgium
| | - B. Champagne
- Laboratoire de Chimie Théorique, Facultés Universitaires Notre-Dame de la Paix (FUNDP), Rue de Bruxelles 61, 5000 Namur, Belgium
| | - V. Lemaur
- Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
| | - D. Beljonne
- Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
| | - R. Lazzaroni
- Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS, Place du Parc 20, B-7000 Mons, Belgium
| | - T. J. Cleij
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - W. Maes
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
| | - L. Lutsen
- IMEC, Division IMOMEC, Universitaire Campus, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - D. Vanderzande
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
- IMEC, Division IMOMEC, Universitaire Campus, Wetenschapspark 1, B-3590 Diepenbeek, Belgium
| | - P. J. Adriaensens
- Institute for Materials Research (IMO) − Chemistry Division, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium
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20
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Qiao Y, Chu TS. Reaction mechanism and chemoselectivity of intermolecular cycloaddition reactions between phenyl-substituted cyclopropenone ketal and methyl vinyl ketone. J Org Chem 2011; 76:3086-95. [PMID: 21438618 DOI: 10.1021/jo102454y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this paper, the mechanisms of the intermolecular [3+2] and [1+2] cycloaddition reactions of 1,1/1,3-dipolar π-delocalized singlet vinylcarbenes, which is obtained from cyclopropenone, with an electron-deficient C═O or C═C dipolarophile, to generate five-membered ring products are first disclosed by the density functional theory (DFT). Four reaction pathways, including two concerted [3+2] cycloaddition reaction pathways and two stepwise reaction pathways (an initial [1+2] cycloaddition and then a rearrangement from the [1+2] cycloadducts to the final [3+2] cycloadducts), are investigated at the B3LYP/6-31G(d,p) level of theory. The calculated results reveal that, in contrast to the concerted C═O [3+2] cycloaddition reaction pathway, which is 7.1 kcal/mol more energetically preferred compared with its stepwise reaction pathway, the C═C dipolarophile favors undergoing [1+2] cycloaddition rather than concerted [3+2] cycloaddition (difference of 5.3 kcal/mol). The lowest free energy barrier of the C═O concerted [3+2] cycloaddition reaction pathway shows that it predominates all other reaction pathways. This observation is consistent with the finding that the C═O [3 + 2] cycloadduct is the main product under experimental conditions. In addition, natural bond orbital second-order perturbation charge analyses are carried out to explain the preferred chemoselectivity of C═O to the C═C dipolarophile and the origins of cis-stereoselectivity for C═C [1+2] cycloaddition. Solvent effects are further considered at the B3LYP/6-31G(d,p) level in the solvents CH(3)CN, DMF, THF, CH(2)Cl(2), toluene, and benzene using the PCM model. The results indicate that the relative reaction trends and the main products are insensitive to the polarity of the reaction solvent.
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Affiliation(s)
- Yan Qiao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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