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Ho J, Cheng P. Ultrafast excited‐state dynamics of gas‐phase 5‐methylcytosine tautomers. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100254] [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)
- Jr‐Wei Ho
- Department of Chemistry National Tsing Hua University Hsinchu Taiwan
| | - Po‐Yuan Cheng
- Department of Chemistry National Tsing Hua University Hsinchu Taiwan
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Wei SC, Ho JW, Yen HC, Shi HQ, Cheng LH, Weng CN, Chou WK, Chiu CC, Cheng PY. Ultrafast Excited-State Dynamics of Hydrogen-Bonded Cytosine Microsolvated Clusters with Protic and Aprotic Polar Solvents. J Phys Chem A 2018; 122:9412-9425. [PMID: 30452255 DOI: 10.1021/acs.jpca.8b09526] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Microsolvation effects on the ultrafast excited-state deactivation dynamics of cytosine (Cy) were studied in hydrogen-bonded Cy clusters with protic and aprotic solvents using mass-resolved femtosecond pump-probe ionization spectroscopy. Two protic solvents, water (H2O) and methanol (MeOH), and one aprotic solvent, tetrahydrofuran (THF), were investigated, and transients of Cy·(H2O)1-6, Cy·(MeOH)1-3, and Cy·THF microsolvated clusters produced in supersonic expansions were measured. With the aid of electronic structure calculations, we assigned the observed dynamics to the low-energy isomers of various Cy clusters and discussed the microsolvation effect on the excited-state deactivation dynamics. With the protic solvents only the microsolvated clusters of Cy keto tautomer were observed. The observed decay time constants of Cy·(H2O) n are 0.5 ps for n = 1 and ∼0.2-0.25 ps for n = 2-6. For Cy·(MeOH) n clusters, the decay time constant for n = 1 cluster is similar to that of the Cy monohydrate, but for n = 2 and 3 the decays are about a factor of 2 slower than the corresponding microhydrates. With the aprotic solvent, THF, hydrogen-bonded complexes of both keto and enol tautomers are present in the beam. The keto-Cy·THF shows a decay similar to that of the keto-Cy monomer, whereas the enol-Cy·THF exhibits a 2-fold slower decay than the enol-Cy monomer, suggesting an increase in the barrier to excited-state deactivation upon binding of one THF molecule to the enol form of Cy.
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Affiliation(s)
- Shih-Chun Wei
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Jr-Wei Ho
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Hung-Chien Yen
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Hui-Qi Shi
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Li-Hao Cheng
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Chih-Nan Weng
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Wei-Kuang Chou
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Chih-Chung Chiu
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
| | - Po-Yuan Cheng
- Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan 30043 , Republic of China
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Valadbeigi Y. Effect of alkali metal cations interactions on the intramolecular proton transfers in [cytosine-X]+ adduct ions, X = H, Li, Na, K. MAIN GROUP CHEMISTRY 2018. [DOI: 10.3233/mgc-180257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Younes Valadbeigi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Chen Z, Lau KC, Garcia GA, Nahon L, Božanić DK, Poisson L, Al-Mogren MM, Schwell M, Francisco JS, Bellili A, Hochlaf M. Identifying Cytosine-Specific Isomers via High-Accuracy Single Photon Ionization. J Am Chem Soc 2016; 138:16596-16599. [DOI: 10.1021/jacs.6b10413] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Ziyong Chen
- Department
of Biology and Chemistry, City University of Hong Kong, Kowloon, Hong Kong
| | - Kai-Chung Lau
- Department
of Biology and Chemistry, City University of Hong Kong, Kowloon, Hong Kong
| | - Gustavo A. Garcia
- Synchrotron SOLEIL, L’orme des
Merisiers, Saint-Aubin
- BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Laurent Nahon
- Synchrotron SOLEIL, L’orme des
Merisiers, Saint-Aubin
- BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Dušan K. Božanić
- Synchrotron SOLEIL, L’orme des
Merisiers, Saint-Aubin
- BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Lionel Poisson
- LIDYL,
CEA, CNRS, Université Paris-Saclay, CEA Saclay, F-91191 Gif-sur-Yvette, France
| | - Muneerah Mogren Al-Mogren
- Chemistry
Department, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - Martin Schwell
- Laboratoire
Interuniversitaire des Systèmes Atmosphériques (LISA),
UMR 7583 CNRS, Universités Paris-Est Créteil et Paris Diderot, 61 Avenue du Général de Gaulle, 94010 Créteil, France
| | - Joseph S. Francisco
- Department
of Chemistry, University of Nebraska-Lincoln. 433 Hamilton Hall, Lincoln, Nebraska 68588-0304, United States
| | - Ayad Bellili
- Laboratoire
Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Université Paris-Est. 5 bd Descartes, 77454 Marne-la-Vallée, France
| | - Majdi Hochlaf
- Laboratoire
Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Université Paris-Est. 5 bd Descartes, 77454 Marne-la-Vallée, France
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Ghosh D. Hybrid Equation-of-Motion Coupled-Cluster/Effective Fragment Potential Method: A Route toward Understanding Photoprocesses in the Condensed Phase. J Phys Chem A 2016; 121:741-752. [DOI: 10.1021/acs.jpca.6b08263] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Debashree Ghosh
- Physical
and Materials Chemistry
Division, CSIR-National Chemical Laboratory, Pune, India 411008
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Ho J, Yen H, Shi H, Cheng L, Weng C, Chou W, Chiu C, Cheng P. Microhydration Effects on the Ultrafast Photodynamics of Cytosine: Evidences for a Possible Hydration‐Site Dependence. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jr‐Wei Ho
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Hung‐Chien Yen
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Hui‐Qi Shi
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Li‐Hao Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Chih‐Nan Weng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Wei‐Kuang Chou
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Chih‐Chung Chiu
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Po‐Yuan Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
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Ho J, Yen H, Shi H, Cheng L, Weng C, Chou W, Chiu C, Cheng P. Microhydration Effects on the Ultrafast Photodynamics of Cytosine: Evidences for a Possible Hydration‐Site Dependence. Angew Chem Int Ed Engl 2015; 54:14772-6. [DOI: 10.1002/anie.201507524] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 09/18/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Jr‐Wei Ho
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Hung‐Chien Yen
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Hui‐Qi Shi
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Li‐Hao Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Chih‐Nan Weng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Wei‐Kuang Chou
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Chih‐Chung Chiu
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
| | - Po‐Yuan Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043 (R.O.C.)
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Mondal SI, Dey A, Sen S, Patwari GN, Ghosh D. Spectroscopic and ab initio investigation of 2,6-difluorophenylacetylene–amine complexes: coexistence of C–H⋯N and lone-pair⋯π complexes and intermolecular coulombic decay. Phys Chem Chem Phys 2015; 17:434-43. [DOI: 10.1039/c4cp03445g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen bond and lone-pair⋯π interactions can coexist.
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Affiliation(s)
| | - Arghya Dey
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Saumik Sen
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - G. Naresh Patwari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400 076
- India
| | - Debashree Ghosh
- Physical and Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
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