Dynamics of multi-channel dissociation of tetrahydrofuran photoexcited at 193 nm: distributions of kinetic energy, angular anisotropies and branching ratios
文献情報
We investigated the photodissociation dynamics of tetrahydrofuran (c-C4H8O) at 193.3 nm in a molecular-beam apparatus using photofragment-translational spectroscopy and direct vacuum-ultraviolet (VUV) photoionization. Five dissociation channels leading to products with m/z ratios appropriate for CH2CH2CH2 + H2CO, CH2CHCH2 + CH2OH, H + CH2CH2 + CH2CHO, CH2CH2 + CH3 + HCO and CH2CH2 + CH2CO + H2 were identified; their branching ratios were determined to be 0.40, 0.25, 0.04 0.29 and 0.02, respectively. Secondary dissociations from nascent products CH2CH2CH2CHO to CH2CH2 + CH2CHO and from CH2CH2O to CH3 + HCO and likely to CH2CO + H2 were observed. We measured distributions of product kinetic energy, average kinetic-energy release, and fractions in translation for each dissociation channel. The formation of CH2CHCH2 + CH2OH indicates that hydrogen migration occurs before complete fragmentation. All photofragments have nearly isotropic angular distributions, with |β| values less than 0.05. The photodissociation of tetrahydrofuran into five channels is proposed to proceed mainly on the ground state potential-energy surface following ring opening and efficient internal conversions.
関連文献
Red-shifted delayed fluorescence at the expense of photoluminescence quantum efficiency – an intramolecular charge-transfer molecule based on a benzodithiophene-4,8-dione acceptor
Stephanie Montanaro, Alexander J. Gillett, Sascha Feldmann, Emrys W. Evans, Felix Plasser, Richard H. Friend, Iain A. Wright
DOI: 10.1039/C9CP02186H
High-speed tracking of fast chemical precipitations
Réka Zahorán, Ákos Kukovecz, Ágota Tóth, Dezső Horváth, Gábor Schuszter
DOI: 10.1039/C9CP01707K
How does the flexibility of pyrrolidinium cations affect the phase behaviour of 1-alkyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide homologues under stressful conditions?
Yoshihiro Koyama, Kiyoto Matsuishi, Takahiro Takekiyo, Hiroshi Abe, Yukihiro Yoshimura
DOI: 10.1039/C9CP01730E
Energetics and structure of Langmuir monolayers of palmitic acid: a DFT study
Óscar Toledano, Óscar Gálvez
DOI: 10.1039/C9CP01563A
Redox-probe-free scanning electrochemical microscopy combined with fast Fourier transform electrochemical impedance spectroscopy
Aušra Valiūnienė, Jurate Petroniene, Georgi Popkirov, Almira Ramanaviciene, Arunas Ramanavicius
DOI: 10.1039/C9CP00187E
Nd3+ doped Gd3Sc2Al3O12 nanoparticles: towards efficient nanoprobes for temperature sensing
Geraldine Dantelle, Marija Matulionyte, Denis Testemale, Alexandra Cantarano, Alain Ibanez, Fiorenzo Vetrone
DOI: 10.1039/C9CP01808E
Effect of bovine serum albumin on tartrate-modified manganese ferrite nano hollow spheres: spectroscopic and toxicity study
Indranil Chakraborty, Urmila Saha, Dipika Mandal, Suprabhat Mukherjee, Nikhilesh Joardar, Santi P. Sinha Babu, Gopinatha Suresh Kumar, Kalyan Mandal
DOI: 10.1039/C9CP01877H
Toward fast and accurate ab initio calculation of magnetic exchange in polynuclear lanthanide complexes
Hans-Joachim Werner, Daniel Kats, Samuel Lenz, Guntram Rauhut, Hermann Stoll, Joris van Slageren
DOI: 10.1039/C9CP00785G
Design of arginine-based therapeutic deep eutectic solvents as drug solubilization vehicles for active pharmaceutical ingredients
Alberto Gutiérrez, Santiago Aparicio
DOI: 10.1039/C9CP01408J
こちらもおすすめ
2-氟-4-イオドベンzo酸エチルエステルを取り扱う際の実験室安全事項は何ですか?
2-氟-4-イオドベンzo酸エチルエステルは有機溶媒を用いた反応であり、ドラフトチャンバーでの操作が必要です。漏洩時にはSDS参照の安全措置を講じ、PPE(防護...
血根碱の主な用途は何ですか?
血根碱は主に医薬分野で利用され、抗炎症や抗がん剤としての潜在的な効果が研究されています。また、化学研究や薬物開発において、新しい薬剤設計の参考となる化合物として...
Methyl 3-methoxythiophene-2-carboxylateの主な用途は何ですか?
Methyl 3-メトキシスチフェン-2-カルボン酸メチルエステルは、薬品合成、染料製造、以及合成中間体としての用途が広がっています。
丹磺酰-L-亮氨酸はどのように保存すればよいですか?
丹磺酰-L-亮氨酸は乾燥した場所で、直射日光から保護し、低温(室温以下)で保存してください。密閉容器に入れて保管することをおすすめします。
5-(苄氧基)ピラミジン-4-アミンの代替品はありますか?
5-(苄氧基)ピラミジン-4-アミンの代替品として、6-メトキシピラミジンや5-フェニルピラミジンなどが挙げられます。これらの化合物は、5-(苄氧基)ピラミジン...
8-ヒドロキシノルデコペントアセートの物理化学的性質は何ですか?
8-ヒドロキシノルデコペントアセートはCAS番号84807-87-4の化合物で、分子量は750.02 uです。これは油溶性で、水に溶けにくい特徴があります。反応...
tert-ブチル(エス)-1-ヒドロキシペンタ-4-エン-2-イルカルバamateの主な用途は何ですか?
tert-ブチル(エス)-1-ヒドロキシペンタ-4-エン-2-イルカルバamateは主に医薬品の合成材料や分析化学の試薬として使用されます。
ブコール-L-2-フローヨルブリンについて適切な法規ガイドラインは何ですか?
ブコール-L-2-フローヨルブリン(CAS番号: 1196107-73-9)は、GHS(グローバルハザードアサessmentシステム)に基づく危害分類と表示が求...
6-ブロモ-N-環丙基-2-ピリジニニメタンの市場動向や研究トレンドはどうですか
6-ブロモ-N-環丙基-2-ピリジニニメタンは、薬理学研究や合成化学に使用される化合物であり、特に抗ウイルス薬や抗がん薬の開発に注目されています。市場では、薬物...
RS-AMPÀはどのように保存すればよいですか?
RS-AMPÀは、遮光容器に保存し、室温(15〜25℃)で保管することが推奨されます。高湿や熱は物質を劣化させるため、湿度は50%以下に保つことが重要です。また...
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.














