The primary photo-dissociation dynamics of lactate in aqueous solution: decarboxylation prevents dehydroxylation
文献信息
Jan Thøgersen, Veronica Vaida, Mikkel Bregnhøj, Tobias Weidner, Frank Jensen
We study the primary photolysis dynamics of aqueous lactate induced by photo-excitation at λ = 200 nm. Our calculations indicate that both decarboxylation and dehydroxylation are energetically possible, but decarboxylation is favoured dynamically. UV pump – IR probe transient absorption spectroscopy shows that the photolysis is dominated by decarboxylation, whereas dehydroxylation is not observed. Analysis of the transient IR spectrum suggests that photo-dissociation of lactate primarily produces CO2 and CH3CHOH− through the lowest singlet excited state of lactate, which has a lifetime of τ = 11 ps. UV pump – VIS probe transient absorption spectroscopy of electrons from the dissociating lactate anion indicates that the anionic electron from the CO2˙− fragment is transferred to the CH3CHOH˙ counter radical during the decarboxylation process, and CO2˙− is consequently only observed as a minor photo-product. The photo-dissociation quantum yield after the full decay of the excited state is Φ(100ps) = 38 ± 5%.
相关文献
Towards an accurate and computationally-efficient modelling of Fe(ii)-based spin crossover materials
Maria Fumanal, Jordi Ribas-Arino, Vincent Robert
DOI: 10.1039/C5CP02502H
The structure of chloromethyl thiocyanate, CH2ClSCN, in gas and crystalline phases
Y. Berrueta Martínez, L. S. Rodríguez Pirani, M. F. Erben, C. G. Reuter, Y. V. Vishnevskiy, H. G. Stammler, N. W. Mitzel, C. O. Della Védova
DOI: 10.1039/C5CP01968K
Complexation induced fluorescence and acid–base properties of dapoxyl dye with γ-cyclodextrin: a drug-binding application using displacement assays
Kaushik Pal, Suman Mallick, Apurba L. Koner
DOI: 10.1039/C5CP01696G
Photocatalytic reduction of triclosan on Au–Cu2O nanowire arrays as plasmonic photocatalysts under visible light irradiation
Junfeng Niu, Yunrong Dai, Lifeng Yin, Jianying Shang, John C. Crittenden
DOI: 10.1039/C5CP02244D
Cation-assisted interactions between N-heterocycles and CO2
Huarong Tang, Dongmei Lu, Chao Wu
DOI: 10.1039/C5CP01793A
Stable p-type properties of single walled carbon nanotubes by electrochemical doping
Chang-Soo Park, Cheol Jin Lee, Eun Kyu Kim
DOI: 10.1039/C5CP01667C
Like-charge ion pairs of hydronium and hydroxide in aqueous solution?
Manik Kumer Ghosh, Tae Hoon Choi, Cheol Ho Choi
DOI: 10.1039/C5CP02182K
Synthesis and magnetic properties of the chromium-doped iron sulfide Fe1−xCrxS single crystalline nanoplates with a NiAs crystal structure
S. S. Starchikov, I. S. Lyubutin, Chun-Rong Lin, Yaw-Teng Tseng, K. O. Funtov, Yu. L. Ogarkova, T. V. Dmitrieva, A. G. Ivanova
DOI: 10.1039/C5CP01846C
Challenging lanthanide relaxation theory: erbium and thulium complexes that show NMR relaxation rates faster than dysprosium and terbium analogues
Alexander M. Funk, Peter Harvey, Katie-Louise N. A. Finney, Mark A. Fox, Alan M. Kenwright, Nicola J. Rogers, P. Kanthi Senanayake, David Parker
DOI: 10.1039/C5CP02210J
您可能还喜欢
什么是2-氨基戊烷(CAS号:63493-28-7)?
2-氨基戊烷,又名pentan-2-amine,是一种有机化合物,分子式为C5H11NH2。它是一种无色透明液体,有氨味。该化合物在工业和研究中有一定的应用。
反式-4-[4-[[[5-[(3,4-二氟苯基)氨基]-1,3,4-恶二唑-2-基]羰基]氨基]苯基]环己烷乙酸(CAS号:892489-52-0)的物理化学性质是什么?
该化合物为白色固体,分子量为552.31 g/mol。它在水中溶解度较低,在有机溶剂如乙腈、乙酸乙酯中有较好的溶解性。该化合物具有较高的化学稳定性,对酸和碱具有...
如何处理含有Pyrotinib dimaleate(CAS号:1397922-61-0)的废料?
处理含有Pyrotinib dimaleate 的废料时,应遵循当地的法规要求。首先,收集废料并进行分类,确保没有与其他化学品混合。然后,采取适当的物理和化学处...
在合成中是否有4-(5-5-乙基-1,2,4-噁二唑-3-基)苯甲酸乙酯(CAS号:1166756-79-1)的替代品?
在合成过程中,可以考虑使用其他结构类似的化合物作为替代品,例如苯甲酸酯类化合物,如2-乙基-5-甲基噁二唑基苯甲酸乙酯等。这些替代品可能具有相似的化学性质,但在...
如何处理含有1-((叔丁氧基羰基)氨基)环丁烷甲酸甲酯(CAS号:880166-10-9)的废料?
处理含有该化合物的废液时,应先确保其完全反应并转化为无害物质。对于未反应的化合物,建议采用中和处理后进行蒸馏回收,剩余物可使用化学氧化法或焚烧法进行无害化处理。...
2-({[3,5-二(三氟甲基)苯基]磺酰基}氨基)-4-(甲基硫代)丁酸甲酯(CAS号:175202-21-8)的市场或研究趋势如何?
目前该化合物主要应用于药物合成领域,尤其在开发新型抗癌药物方面具有潜在应用。随着制药行业的持续发展,对于高效、低毒的合成中间体需求增加,预计该化合物的研究和应用...
N,N-乙烯双(碘乙酰胺)(CAS号:7250-43-3)的物理化学性质是什么?
N,N-乙烯双(碘乙酰胺)是一种白色或类白色固体,易溶于乙醇、丙酮等有机溶剂,但在水中溶解度较低。该化合物具有较高的反应活性,可以与其他含有活性氢的化合物发生酰...
7-Fluoro-1H-spiro[furo[3,4-c]pyridine-3,4'-piperidine](CAS号:1283090-73-2)通常如何合成?
该化合物可以通过环合反应合成,首先合成吡啶和哌啶的衍生物,然后在合适的条件下进行环合反应得到目标化合物。常用的催化剂包括某些金属盐类,产率一般在70%-90%之...
处理3-乙酰滇乌碱(CAS号:80787-51-5)时应注意哪些实验室安全事项?
在处理3-乙酰滇乌碱时,应穿戴适当的个人防护装备(PPE),如实验服、手套(丁腈手套或PVC手套)、护目镜和口罩。实验应在通风橱中进行,以减少吸入或皮肤接触的风...
如何储存2-溴-5-硝基-4-羧酸(CAS号:1053655-82-5)?
2-溴-5-硝基-4-羧酸应存放在阴凉、干燥、通风良好的地方,远离火源和热源。避免与还原剂、碱性物质接触。储存容器应密封,防止吸湿。
来源期刊
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.











![1-(1-Benzyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-benzo[d]imidazol-2(3H)-one structure 1-(1-Benzyl-1,2,3,6-tetrahydropyridin-4-yl)-1H-benzo[d]imidazol-2(3H)-one structure](https://cnstatic.chemtradehub.com/structs/603/60373-71-9-7dfb.webp)
![(2R,6S)-6-[(Benzyloxy)methyl]-4-{[(2-methyl-2-propanyl)oxy]carbonyl}-2-morpholinecarboxylic acid structure (2R,6S)-6-[(Benzyloxy)methyl]-4-{[(2-methyl-2-propanyl)oxy]carbonyl}-2-morpholinecarboxylic acid structure](https://cnstatic.chemtradehub.com/structs/109/1093085-91-6-3382.webp)
![1-oxaspiro[4.4]nonan-6-one structure 1-oxaspiro[4.4]nonan-6-one structure](https://cnstatic.chemtradehub.com/structs/134/134179-01-4-e051.webp)
