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Tamrakar A, Wani MA, Mishra G, Srivastava A, Pandey R, Pandey MD. Advancements in the development of fluorescent chemosensors based on CN bond isomerization/modulation mechanistic approaches. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:2198-2228. [PMID: 38567418 DOI: 10.1039/d3ay02321d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The CN bond isomerization/modulation as a fluorescence signalling mechanism was explored by studying the photophysical properties of conformationally restricted molecules. From the beginning, the CN bond isomerization method has attracted the attention of researchers owing to its simplicity, high selectivity, and sensitivity in fluorescence evaluation. Continuous developments in the field of sensing using CN bond-containing compounds have been achieved via the customization of the isomerization process around the CN bond in numerous ways, and the results were obtained in the form of specific discrete photophysical changes. CN isomerization causes significant fluorescence enhancement in response to detected metal cations and other reactive species (Cys, Hys, ClO-, etc.) straightforwardly and effectively. This review sheds light on the process of CN bond isomerization/modulation as a signalling mechanism depending on fluorescence changes via conformational restriction. In addition, CN bond isomerization-based fluorescent sensors have yet to be well reviewed, although several fluorescent sensors based on this signalling mechanism have been reported. Therefore, CN-based fluorescent sensors are summarized in this review.
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Affiliation(s)
- Arpna Tamrakar
- Department of Chemistry, Institute of Science, Banaras Hindu University, UP-221005, India.
| | - Manzoor Ahmad Wani
- Department of Chemistry, Institute of Science, Banaras Hindu University, UP-221005, India.
| | - Gargi Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, UP-221005, India.
| | - Ankur Srivastava
- Department of Chemistry, Institute of Science, Banaras Hindu University, UP-221005, India.
| | - Rampal Pandey
- Department of Chemistry, National Institute of Technology Uttarakhand, UK-246174, India.
| | - Mrituanjay D Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, UP-221005, India.
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2
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Kanagaraj K, Wang R, Zhao MK, Ballester P, Rebek J, Yu Y. Selective Binding and Isomerization of Oximes in a Self-Assembled Capsule. J Am Chem Soc 2023; 145:5816-5823. [PMID: 36857099 DOI: 10.1021/jacs.2c12907] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
A series of straight-chain (C7-C13) alkyl-O-methyl aldoximes (R-C(H)═NOMe) were synthesized with various functional groups at the remote ends (alkenes, halogen, -COOH, and NH2). Their isomers about the C═N bond showed ∼60-40% E-Z-ratio in organic solutions. Surprisingly, their confinement in a water-soluble capsule with benzoselenodiazole walls shows high selectivity for the cis-/Z-isomer. Their relative affinities for the chalcogen-bonded capsule at room temperature depend mainly on the guest chain length and functional groups. A chain length of 14 heavy atoms showed especially high E- to Z-isomer selectivity (>99%) and was used in separation. The E-Z isomerization occurred only in the capsular cavity at room temperature and was accelerated 10-fold by sonication. The Z-isomer selective binding, separation, and E-Z isomerization are supported by NMR, DOSY, and computational studies.
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Affiliation(s)
- Kuppusamy Kanagaraj
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Rui Wang
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Ming-Kai Zhao
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
| | - Pablo Ballester
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), 43007 Tarragona, Spain.,Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain
| | - Julius Rebek
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China.,Skaggs Institute for Chemical Biology and Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yang Yu
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China
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3
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Lee IS, Min SK. Generalized Formulation of the Density Functional Tight Binding-Based Restricted Ensemble Kohn-Sham Method with Onsite Correction to Long-Range Correction. J Chem Theory Comput 2022; 18:3391-3409. [PMID: 35549266 DOI: 10.1021/acs.jctc.2c00037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We present a generalized formulation for the combination of the density functional tight binding (DFTB) approach and the state-interaction state-average spin-restricted ensemble-referenced Kohn-Sham (SI-SA-REKS or SSR) method by considering onsite correction (OC) as well as the long-range corrected (LC) functional. The OC contribution provides more accurate energies and analytic gradients for individual microstates, while the multireference character of the SSR provides the correct description for conical intersections. We benchmark the LC-OC-DFTB/SSR method against various DFTB calculation methods for excitation energies and conical intersection structures with π/π* or n/π* characters. Furthermore, we perform excited-state molecular dynamics simulations with a molecular rotary motor with variations of LC-OC-DFTB/SSR approaches. We show that the OC contribution to the LC functional is crucial to obtain the correct geometry of conical intersections.
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Affiliation(s)
- In Seong Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, South Korea
| | - Seung Kyu Min
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, South Korea
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4
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Darole RS, Christopher Leslee DB, Mukherjee A, Gonnade RG, Karuppannan S, Senthilkumar B. Anthrone‐spirolactam and quinoline hybrid based sensor for selective fluorescent detection of Fe
3+
ions. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5867] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ratanamala S. Darole
- Organic Chemistry Division CSIR – National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | | | - Anagh Mukherjee
- Physical/Materials Chemistry CSIR – National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Rajesh G. Gonnade
- Center for Materials Characterization CSIR – National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Sekar Karuppannan
- Department of Science and Humanities Anna University – University College of Engineering Dindigul 624622 India
| | - Beeran Senthilkumar
- Organic Chemistry Division CSIR – National Chemical Laboratory Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
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5
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Zilberg S. Design of Light‐Induced Molecular Switcher for the Driver of the Quantum Cellular Automata (QCA) Based on the Transition through the Intramolecular Charge Transfer (ICT) Structure. Isr J Chem 2020. [DOI: 10.1002/ijch.201900148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shmuel Zilberg
- Department of Chemical SciencesAriel University 40700 Ariel Israel
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6
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Saied KF, Abdelwahab SS, Hashem HE, Kandeel KA. Advancements in synthesis of pharmacologically active imidazolidin‐4‐ones and stereochemistry of their Reactions with some Reagents. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Khaled F. Saied
- Basic Science Department, Faculty of Oral and Dental MedicineNahda University Beni‐Suef Egypt
| | - Salwa S. Abdelwahab
- Faculty of Pharmaceutical Sciences and Pharmaceutical industriesFuture University Cairo Egypt
| | - Heba E. Hashem
- Department of Chemistry, Faculty of WomenAin Shams University Cairo Egypt
| | - Kamal A. Kandeel
- Department of Chemistry, Faculty of SinceAin Shams University Cairo Egypt
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7
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Lee IS, Filatov M, Min SK. Formulation and Implementation of the Spin-Restricted Ensemble-Referenced Kohn–Sham Method in the Context of the Density Functional Tight Binding Approach. J Chem Theory Comput 2019; 15:3021-3032. [DOI: 10.1021/acs.jctc.9b00132] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- In Seong Lee
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Michael Filatov
- Department of Chemistry, Kyungpook National University, Daegu 702-701, Republic of Korea
| | - Seung Kyu Min
- Department of Chemistry, School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
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8
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Ziemann S, Krieck S, Görls H, Westerhausen M. 1,2-Bis(anilido)ethane Complexes of Calcium and Potassium: Synthesis, Structures, and Catalytic Activity. Organometallics 2018. [DOI: 10.1021/acs.organomet.7b00890] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steffen Ziemann
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany
| | - Sven Krieck
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany
| | - Matthias Westerhausen
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstraße 8, D-07743 Jena, Germany
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9
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Paolino M, Gueye M, Pieri E, Manathunga M, Fusi S, Cappelli A, Latterini L, Pannacci D, Filatov M, Léonard J, Olivucci M. Design, Synthesis, and Dynamics of a Green Fluorescent Protein Fluorophore Mimic with an Ultrafast Switching Function. J Am Chem Soc 2016; 138:9807-25. [DOI: 10.1021/jacs.5b10812] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Marco Paolino
- Dipartimento di Biotecnologie, Chimica
e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Moussa Gueye
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
| | - Elisa Pieri
- Dipartimento di Biotecnologie, Chimica
e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Madushanka Manathunga
- Chemistry Department, Bowling Green State University, Bowling
Green, Ohio, United States
| | - Stefania Fusi
- Dipartimento di Biotecnologie, Chimica
e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Andrea Cappelli
- Dipartimento di Biotecnologie, Chimica
e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Loredana Latterini
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy
| | - Danilo Pannacci
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia, Via Elce di Sotto, 8, 06123 Perugia, Italy
| | - Michael Filatov
- Department of Chemistry,
School of Natural Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Jérémie Léonard
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE, Université de Strasbourg, CNRS UMR 7504, Strasbourg, France
| | - Massimo Olivucci
- Dipartimento di Biotecnologie, Chimica
e Farmacia, Università di Siena, Via A. Moro 2, 53100 Siena, Italy
- Chemistry Department, Bowling Green State University, Bowling
Green, Ohio, United States
- University of Strasbourg Institute for Advanced Studies, 5, allée du Général
Rouvillois F-67083 Strasbourg, France
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10
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Nikiforov A, Gamez JA, Thiel W, Huix-Rotllant M, Filatov M. Assessment of approximate computational methods for conical intersections and branching plane vectors in organic molecules. J Chem Phys 2015; 141:124122. [PMID: 25273427 DOI: 10.1063/1.4896372] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Quantum-chemical computational methods are benchmarked for their ability to describe conical intersections in a series of organic molecules and models of biological chromophores. Reference results for the geometries, relative energies, and branching planes of conical intersections are obtained using ab initio multireference configuration interaction with single and double excitations (MRCISD). They are compared with the results from more approximate methods, namely, the state-interaction state-averaged restricted ensemble-referenced Kohn-Sham method, spin-flip time-dependent density functional theory, and a semiempirical MRCISD approach using an orthogonalization-corrected model. It is demonstrated that these approximate methods reproduce the ab initio reference data very well, with root-mean-square deviations in the optimized geometries of the order of 0.1 Å or less and with reasonable agreement in the computed relative energies. A detailed analysis of the branching plane vectors shows that all currently applied methods yield similar nuclear displacements for escaping the strong non-adiabatic coupling region near the conical intersections. Our comparisons support the use of the tested quantum-chemical methods for modeling the photochemistry of large organic and biological systems.
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Affiliation(s)
- Alexander Nikiforov
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Jose A Gamez
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Miquel Huix-Rotllant
- Institute of Physical and Theoretical Chemistry, Goethe University Frankfurt, Max-von-Laue-Str. 7, D-60438 Frankfurt am Main, Germany
| | - Michael Filatov
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstr. 4, D-53115 Bonn, Germany
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11
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Cigáň M, Gáplovský M, Jakusová K, Donovalová J, Horváth M, Filo J, Gáplovský A. Isatin N2-diphenylhydrazones: new easily synthesized Vis-Vis molecular photoswitches. RSC Adv 2015. [DOI: 10.1039/c5ra06625e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An easily synthesized new type of Vis-Vis molecular switches based on hydrazone CN bond photoisomerization and isatin NH group deprotonation.
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Affiliation(s)
- M. Cigáň
- Faculty of Natural Sciences
- Institute of Chemistry
- Comenius University
- SK-842 15 Bratislava
- Slovakia
| | - M. Gáplovský
- Faculty of Natural Sciences
- Institute of Chemistry
- Comenius University
- SK-842 15 Bratislava
- Slovakia
| | - K. Jakusová
- Faculty of Natural Sciences
- Institute of Chemistry
- Comenius University
- SK-842 15 Bratislava
- Slovakia
| | - J. Donovalová
- Faculty of Natural Sciences
- Institute of Chemistry
- Comenius University
- SK-842 15 Bratislava
- Slovakia
| | - M. Horváth
- Faculty of Natural Sciences
- Institute of Chemistry
- Comenius University
- SK-842 15 Bratislava
- Slovakia
| | - J. Filo
- Faculty of Natural Sciences
- Institute of Chemistry
- Comenius University
- SK-842 15 Bratislava
- Slovakia
| | - A. Gáplovský
- Faculty of Natural Sciences
- Institute of Chemistry
- Comenius University
- SK-842 15 Bratislava
- Slovakia
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12
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Sarto LE, Landre IMR, Bozza GF, Torres C, de Almeida ET. Synthesis and characterization of palladium(II) complexes [PdX2(p-diben)] (X = Cl, Br, I, N3, or NCO; p-diben = N,N′-bis(4-dimethylaminobenzylidene)ethane-1,2-diamine): crystal structure of [Pd(N3)2(p-diben)]. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9824-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Su MD. Model Study of the Photochemical Rearrangement Pathways of 1,2,4-Oxadiazole. Chemphyschem 2014; 15:2712-22. [DOI: 10.1002/cphc.201402069] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/16/2014] [Indexed: 11/08/2022]
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14
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Gozem S, Schapiro I, Ferre N, Olivucci M. The Molecular Mechanism of Thermal Noise in Rod Photoreceptors. Science 2012; 337:1225-8. [DOI: 10.1126/science.1220461] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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15
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Szalay PG, Müller T, Gidofalvi G, Lischka H, Shepard R. Multiconfiguration Self-Consistent Field and Multireference Configuration Interaction Methods and Applications. Chem Rev 2011; 112:108-81. [DOI: 10.1021/cr200137a] [Citation(s) in RCA: 470] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Péter G. Szalay
- Laboratory for Theoretical Chemistry, Institute of Chemistry, Eötvös Loránd University, P. O. Box 32, H-1518 Budapest, Hungary
| | - Thomas Müller
- Jülich Supercomputer Centre, Institute of Advanced Simulation, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - Gergely Gidofalvi
- Department of Chemistry and Biochemistry, Gonzaga University, 502 East Boone Avenue, Spokane, Washington 99258-0102, United States
| | - Hans Lischka
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- Institute for Theoretical Chemistry, University of Vienna, Waehringerstrasse 17, A-1090 Vienna, Austria
| | - Ron Shepard
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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16
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Bakkar M, Monshi M, Warad I, Siddiqui M, Bahajaj A. 1H 13C NMR investigation of E/Z-isomerization around CN bond in the trans-alkene-Pt(II)imine complexes of some ketimines and aldimines. JOURNAL OF SAUDI CHEMICAL SOCIETY 2010. [DOI: 10.1016/j.jscs.2010.02.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Xu XF, Kahan A, Zilberg S, Haas Y. Photoreactivity of a push-pull merocyanine in static electric fields: a three-state model of isomerization reactions involving conical intersections. J Phys Chem A 2009; 113:9779-91. [PMID: 19725583 DOI: 10.1021/jp904097k] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The photochemistry of a prototype push-pull merocyanine is discussed using a simple three-state model. As a derivative of butadiene, the model focuses on two isomerization reactions around the two double bonds of the butadiene backbone. As a molecule substituted by an electron donor and electron acceptor at opposite ends, its structure as well as its photochemistry are expected to be strongly affected by the environment. In polar solvents, a zwitterion transition state for each of the isomerization reactions is stabilized, and its energy is on the same order as that of the biradical one; this leads to the symmetry allowed crossing (S(0)/S(1) conical intersection). It is shown that applying an external electric field or varying the solvent polarity changes the relative energies of the different transition states as well as that of the conical intersection, and thus different photochemical products can be obtained. In particular, the very existence of conical intersections is found to depend on these external parameters. This work provides a theoretical foundation for ideas expressed by Squillacote et al. (J. Am. Chem. Soc. 2004, 126, 1940) concerning the electrostatic control of photochemical reactions.
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Affiliation(s)
- X F Xu
- Institute of Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem, Israel
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18
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Fabiano E, Keal T, Thiel W. Implementation of surface hopping molecular dynamics using semiempirical methods. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.01.044] [Citation(s) in RCA: 196] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Alfalah S, Deeb O, Zilberg S, Haas Y. Solvent effect on the conical intersection of 4-cyclopentadienylidene-1,4-dihydropyridine (CPDHP). Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.05.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Barbatti M, Belz S, Leibscher M, Lischka H, Manz J. Sensitivity of femtosecond quantum dynamics and control with respect to non-adiabatic couplings: Model simulations for the cis–trans isomerization of the dideuterated methaniminium cation. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.01.053] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Barbatti M, Ruckenbauer M, Szymczak JJ, Aquino AJA, Lischka H. Nonadiabatic excited-state dynamics of polar π-systems and related model compounds of biological relevance. Phys Chem Chem Phys 2008; 10:482-94. [DOI: 10.1039/b709315m] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Barbatti M, Granucci G, Persico M, Ruckenbauer M, Vazdar M, Eckert-Maksić M, Lischka H. The on-the-fly surface-hopping program system Newton-X: Application to ab initio simulation of the nonadiabatic photodynamics of benchmark systems. J Photochem Photobiol A Chem 2007. [DOI: 10.1016/j.jphotochem.2006.12.008] [Citation(s) in RCA: 380] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Zilberg S, Cogan S, Haas Y, Deeb O, González L. Conical intersections in the photoisomerization and photodissociation of a chiral fluoroethylene derivative ((4-methylcyclohexylidene) fluoromethane). Chem Phys Lett 2007. [DOI: 10.1016/j.cplett.2007.06.072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Barbatti M, Aquino AJA, Lischka H. Ultrafast two-step process in the non-adiabatic relaxation of the CH2 molecule. Mol Phys 2007. [DOI: 10.1080/00268970500417945] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Mario Barbatti
- a Institute for Theoretical Chemistry , University of Vienna , Whringerstrasse 17, A-1090 Vienna, Austria
| | - Adélia J. A. Aquino
- a Institute for Theoretical Chemistry , University of Vienna , Whringerstrasse 17, A-1090 Vienna, Austria
| | - Hans Lischka
- a Institute for Theoretical Chemistry , University of Vienna , Whringerstrasse 17, A-1090 Vienna, Austria
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25
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Schreiber M, Barbatti M, Zilberg S, Lischka H, Gonzalez L. An Ab Initio Study of the Excited States, Isomerization Energy Profiles and Conical Intersections of a Chiral Cyclohexylidene Derivative. J Phys Chem A 2006; 111:238-43. [PMID: 17214459 DOI: 10.1021/jp066090x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The excited valence and Rydberg states of the chiral (4-methylcyclohexylidene) fluoromethane (4MCF) have been investigated using multiconfigurational CASSCF and CASPT2, and coupled-cluster methods (RI-CC2). A 3s Rydberg state is predicted below the valence (1)pipi* state. To gain insight into the photophysics of the cis-trans isomerization of this olefin, potential energy profiles for the valence (10pipi* state along the twisting and pyramidalization reaction coordinates have been computed using variational methods (CASSCF and multireference configuration interaction with singles and doubles (MR-CISD)). Starting from geometries with energies close to degeneracy in the valence and ground-state curves, three minima on the crossing seam that can be correlated with the conical intersections known for fluoroethylene, have been found. On the basis of these features, the photochemistry of 4MCF is discussed.
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Affiliation(s)
- Marko Schreiber
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
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Belau L, Haas Y, Zilberg S. Formation of the cyclo-Pentazolate N5- Anion by High-Energy Dissociation of Phenylpentazole Anions. J Phys Chem A 2004. [DOI: 10.1021/jp0469057] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Leonid Belau
- Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Yehuda Haas
- Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Shmuel Zilberg
- Department of Physical Chemistry and the Farkas Center for Light Induced Processes, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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