Effect of substituents on the excited-state dynamics of the modified DNA bases 2,4-diaminopyrimidine and 2,6-diaminopurine
Literature Information
Publication Date
2010-04-08
DOI
10.1039/B917852J
Impact Factor
3.676
Authors
Zsolt Gengeliczki, Michael P. Callahan, Nathan Svadlenak, Csaba István Pongor, Leo Meerts, Dana Nachtigallová, Pavel Hobza, Mario Barbatti, Mattanjah S. de Vries
View Original
Abstract
To explore the excited state dynamics of pyrimidine derivatives, we performed a combined experimental and theoretical study. We present resonant two-photon ionization (R2PI) and IR-UV double resonance spectra of 2,4-diaminopyrimidine and 2,6-diaminopurine seeded in a supersonic jet by laser desorption. For 2,4-diaminopyrimidine (S0 → S1 34 459 cm−1), we observed only the diamino tautomer with an excited state lifetime bracketed between experimental limits of 10 ps and 1 ns. For 2,6-diaminopurine, we observed two tautomers, the 9H- (S0 → S1 34 881 cm−1) and 7H- (S0 → S1 32 215 cm−1) diamino forms, with excited state lifetimes of 6.3 ± 0.4 ns and 8.7 ± 0.8 ns, respectively. We investigated the nature of the excited state of 2,4-diaminopyrimidine by means of multi-reference ab initio methods. The calculations of stationary points in the ground and excited states, minima on the S0/S1 crossing seam and connecting reaction paths show that several paths with negligible barriers exist, allowing ultrafast radiationless deactivation if excited at energies slightly higher than the band origin. The sub-nanosecond lifetime found experimentally is in good agreement with this finding.
Related Literature
Poly(vinyl alcohol) star polymers prepared via MADIX/RAFT polymerisation
Martina H. Stenzel, Thomas P. Davis, Christopher Barner-Kowollik
2004-06-02
Communication
DOI: 10.1039/B404763J
Kinetics of chalconeoxidation by peroxide anion catalysed by poly-l-leucine
Giacomo Carrea, Stefano Colonna, Alastair D. Meek, Gianluca Ottolina, Stanley M. Roberts
2004-05-17
Communication
DOI: 10.1039/B401497A
Strategies toward improving the performance of fluorescence-based sensors for inorganic anions
Radek Pohl, Dmitry Aldakov, Pavel Kubát, Karolina Jursíková, Manuel Marquez, Pavel Anzenbacher, Jr.
2004-05-10
Communication
DOI: 10.1039/B315268E
A new series of sodium cobalt oxyhydrates
Donna C. Arnold, Chris J. Nuttall, Alexandros Lappas
2004-09-21
Communication
DOI: 10.1039/B405907G
Controlled proteinassembly on a switchable surface
Ying Liu, Li Mu, Baohong Liu, Song Zhang, Pengyuan Yang, Jilie Kong
2004-04-14
Communication
DOI: 10.1039/B400776J
Ultrasonic cavitation in microspace
Yasuo Iida, Kyuichi Yasui, Toru Tuziuti, Manickam Sivakumar, Yoshishige Endo
2004-09-28
Communication
DOI: 10.1039/B410015H
Solid-state caging of 1,10-phenanthroline π–π stacked dimers by calix[4]arene dihydroxyphosphonic acid
Adina N. Lazar, Alda Navaza, Anthony W. Coleman
2004-03-30
Communication
DOI: 10.1039/B315600C
Halide anion directed assembly of luminescent pseudorotaxanes
David Curiel, Paul D. Beer, Rowena L. Paul, Andrew Cowley, Mark R. Sambrook, Fridrich Szemes
2004-04-22
Communication
DOI: 10.1039/B401900H
Ring-closing metathesis in biphasic BMI·PF6ionic liquid/toluene medium: a powerful recyclable and environmentally friendly process
Hervé Clavier, Nicolas Audic, Marc Mauduit, Jean-Claude Guillemin
2004-08-25
Communication
DOI: 10.1039/B407964G
Novel cobalt-free oxygen permeable membrane
Xuefeng Zhu, Haihui Wang, Weishen Yang
2004-04-08
Communication
DOI: 10.1039/B400857J
You might also like
Compound Q&A
What precautions should be taken when handling 2-Chloro-1,2-bis(4-methylphenyl)ethanone (CAS: 71193-32-3)?
When handling 2-Chloro-1,2-bis(4-methylphenyl)ethanone (CAS: 71193-32-3), it is ...
71193-32-32-Chloro-1,2-bis(4-m...
Compound Q&A
What industries use 4-Ethoxy-3-(5-methyl-4-oxo-7-propyl-1,4-dihydroimidazo[5,1-f][1,2,4]triazin-2-yl)benzenesulfonyl chloride (CAS: 224789-26-8)?
4-Ethoxy-3-(5-methyl-4-oxo-7-propyl-1,4-dihydroimidazo[5,1-f][1,2,4]triazin-2-yl...
224789-26-84-Ethoxy-3-(5-methyl...
Compound Q&A
How should Methyl 3-Oxo-4-Androsten-17-Carboxylate (CAS: 2681-55-2) be stored?
Methyl 3-Oxo-4-Androsten-17-Carboxylate (CAS: 2681-55-2) should be stored in a c...
2681-55-2Methyl 3-Oxo-4-Andro...
Compound Q&A
What are the main uses of (R)-3-Amino-4-(3-hexylphenylamino)-4-oxobutylphosphonic acid (CAS: 909725-61-7)?
(R)-3-Amino-4-(3-hexylphenylamino)-4-oxobutylphosphonic acid is primarily used i...
909725-61-7(R)-3-Amino-4-(3-hex...
Compound Q&A
What regulatory guidelines apply to 2-Methyl-2-propanyl 3-amino-3-carbamoyl-1-azetidinecarboxylate (CAS: 1254120-14-3)?
2-Methyl-2-propanyl 3-amino-3-carbamoyl-1-azetidinecarboxylate (CAS: 1254120-14-...
1254120-14-32-Methyl-2-propanyl ...
Compound Q&A
Are there alternatives to (E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid (CAS: 135355-96-3) in synthesis?
There are alternative reagents that can be used in synthesis instead of (E)-4-(t...
135355-96-3(E)-4-(tert-Butoxy)-...
Compound Q&A
What are the physical and chemical properties of [2-(3-Chlorophenyl)-1,3-thiazol-4-yl]methanol (CAS: 121202-20-8)?
[2-(3-Chlorophenyl)-1,3-thiazol-4-yl]methanol (CAS: 121202-20-8) is a crystallin...
121202-20-8[2-(3-Chlorophenyl)-...
Compound Q&A
What is the market or research trend for Methyl (2S)-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]{[(4-methylphenyl)sulfonyl]oxy}acetate (CAS: 166249-17-8)?
The market and research trends for Methyl (2S)-[(4S)-2,2-dimethyl-1,3-dioxolan-4...
166249-17-8Methyl (2S)-[(4S)-2,...
Compound Q&A
What is the market or research trend for 1-Bromo-2-isocyanatoethane (CAS: 42865-19-0)?
The market for 1-Bromo-2-isocyanatoethane (CAS: 42865-19-0) is driven by its use...
42865-19-01-Bromo-2-isocyanato...
Compound Q&A
What are the main uses of 4-Nitro-D-phenylalanine hydrochloride (CAS: 147065-06-3)?
4-Nitro-D-phenylalanine hydrochloride (CAS: 147065-06-3) is primarily used in re...
147065-06-34-Nitro-D-phenylalan...
Source Journal
Physical Chemistry Chemical Physics
CiteScore:
5.5
Self-citation Rate:
10.3%
Articles per Year:
3036
Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.
Recommended Compounds
Recommended Suppliers
Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.