The photodissociation dynamics of N-nitrosopyrrolidine from the first and second excited singlet states studied by velocity map imaging
文献情報
Andreas Maximilian Wenge, Uwe Kensy, Bernhard Dick
The photodissociation reaction of N-nitrosopyrrolidine isolated and cooled in a supersonic jet has been studied following excitation to the S1 and S2 electronic states. The nascent NO ( 2Π½,, v, j) radicals were ionized by state-selective (1 + 1)-REMPI via the A2Σ+ state. The angularly resolved velocity distribution of these ions was measured with the velocity-map imaging (VMI) technique. Photodissociation from S1 produces NO in the vibrational ground state and the pyrrolidine radical in the electronic ground state 1 2B. About 73% of the excess energy is converted into kinetic energy of the fragments. The velocity distribution shows a strong negative anisotropy (β = −0.9) in accordance with the nπ*-character of the S0 → S1 transition. An upper limit for the N–NO dissociation energy of (14 640 ± 340) cm−1 is determined. We conclude that photodissociation from S1 occurs very fast on a completely repulsive potential energy surface. Excitation into the S2 ππ*-state leads to a bimodal velocity distribution. Two dissociation channels can be distinguished which show both positive anisotropy (β = 1.3 and 1.6) but differ considerably in the total kinetic energy and the rotational energy of the NO fragment. We assign one channel to the direct dissociation on the S2 potential energy surface, leading to pyrrolidine radicals in the excited electronic state 1 2A. The second channel leads to pyrrolidine in the electronic ground state 1 2B, presumably after crossing to the S1 state via a conical intersection.
おすすめジャーナル

Mini-Reviews in Medicinal Chemistry

Contact Lens & Anterior Eye

Lab on a Chip

European Journal of Organic Chemistry

Environmental Toxicology and Pharmacology

Foundations of Chemistry

Advanced Engineering Materials

Journal of Enzyme inhibition and Medicinal Chemistry

Physical Chemistry Chemical Physics

Nature Reviews Drug Discovery
関連文献
Lectin-based lateral flow assay: proof-of-concept
Pavel Damborský, Katarzyna M. Koczula, Andrea Gallotta, Jaroslav Katrlík
DOI: 10.1039/C6AN01746K
Acoustofluidic particle trapping, manipulation, and release using dynamic-mode cantilever sensors
Blake N. Johnson, Raj Mutharasan
DOI: 10.1039/C6AN01743F
An ultrasensitive electrochemical immunosensor based on the synergistic effect of quaternary Cu2SnZnS4 NCs and cyclodextrin-functionalized graphene
Lei Liu, Yihe Zhang, Ruifeng Du, Jinhong Li, Xuelian Yu
DOI: 10.1039/C6AN02538B
Correlation ion mobility spectrometry
Austen L. Davis, Wenjie Liu, William F. Siems, Brian H. Clowers
DOI: 10.1039/C6AN02249A
Ligand density quantification on colloidal inorganic nanoparticles
Ashley M. Smith, Kathryn A. Johnston, Scott E. Crawford, Lauren E. Marbella, Jill E. Millstone
DOI: 10.1039/C6AN02206E
Characterization of lectin binding affinities via direct LC-MS profiling: implications for glycopeptide enrichment and separation strategies
Feifei Zhu, David E. Clemmer, Jonathan C. Trinidad
DOI: 10.1039/C6AN02043G
Graphite nanoparticle as nanoquencher for 17β-estradiol detection using shortened aptamer sequence
Xiaoli Qi, Hui Hu, Yunxian Piao
DOI: 10.1039/C8AN00591E
Development of a functional point-of-need diagnostic for myeloperoxidase detection to identify neutrophilic bronchitis
Michael G. Wolfe, Qiang Zhang, Christy Hui, Katherine Radford, Parameswaran Nair, John D. Brennan
DOI: 10.1039/C6AN01563H
こちらもおすすめ
4-アミノフェノール酸ナトリウム水和物とは何ですか?
4-アミノフェノール酸ナトリウム水和物は、CAS番号206557-08-6の化合物で、4-アミノフェノールとナトリウムが結合した塩と水和物です。この化合物は、白...
Methyl 3-methyl-N-{[(2-methyl-2-propanyl)oxy]carbonyl}-L-histidinateの代替品はありますか?
この化合物は特定の合成プロセスに使用される可能性がありますが、代替品として、他の类似的な化合物、例えばMethyl 3-methyl-N-{[(2-methyl...
4-Boc-2-哌嗪甲酸の市場動向や研究トレンドはどうですか?
4-Boc-2-哌嗪甲酸は、薬品開発や合成化学分野で広く使用されており、その需要は継続的に推移しています。特に、新薬開発における合成化学分野での需要が高まってい...
4,4'-二羟甲基联苯の物理化学的性質は何ですか?
4,4'-二羟甲基联苯のCAS番号は1667-12-5です。この化合物は白色の結晶粉末で、分子量は154.20です。水にわずかに溶けますが、アルコールや有機溶媒...
5-甲硫基戊腈はどの業界で使用されていますか?
5-甲硫基戊腈は医薬品産業で使用される可能性があります。また、ポリマー合成の触媒として、センサー製造の一部として、半導体製造のプロセス改善に使用される可能性があ...
CAS番号1311961-50-8の化合物はどのように合成されますか?
この化合物は、1-abieta-8,11,13-trien-19-イルと6'-メトキシシンコナナン-9-基を含有する窒素含有化合物から合成されます。一般的な合成...
6-ブロモベンジジミダゾール-2-カルビルデオキシドはどのように保存すればよいですか?
6-ブロモベンジジミダゾール-2-カルビルデオキシドは、避光・乾燥した容器(密閉容器)で-20℃~4℃の低温で保存してください。高温や直射日光、湿気は避けてくだ...
Boc-N-甲基氨甲环酸とは何ですか?
621-65-8のCAS番号を持つBoc-N-甲基氨甲环酸は、化学式C7H13NO5を有する化合物です。この化合物は白色の結晶性粉末で、吸湿性があります。
乙基三氟硼酸钾はどのように合成されますか?
乙基三氟硼酸钾は、トリフLUオール酸カリウムとエチルブロミドを反応させて合成されます。この反応は高い選択性と収率を持ち、触媒を用いることで効率的に進行します。
2-フロウロ-5-クロロ-4-アミノフェノールはどのように保存すればよいですか?
2-フロウロ-5-クロロ-4-アミノフェノールは、直射日光を避けて冷却された暗所で保存し、密閉容器に保管してください。温度は常温か低温が適しています。
掲載誌
Physical Chemistry Chemical Physics

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.
![Methyl 3-({2'-[(E)-(hydroxyhydrazono)methyl]-4-biphenylyl}methyl)-2-oxo-2,3-dihydro-1H-benzimidazole-4-carboxylate structure Methyl 3-({2'-[(E)-(hydroxyhydrazono)methyl]-4-biphenylyl}methyl)-2-oxo-2,3-dihydro-1H-benzimidazole-4-carboxylate structure](https://static.chemtradehub.com/structs/149/1499167-72-4-034a.webp)



