Sulfoxides and cyclic ureas are photochemically deoxygenating solvents in which the oxidative stress could be released and efficient triplet-triplet annihilation photon upconversion (TTA-UC) can operate in air. Such solvents can be practically screened out by harnessing the property of photo-activated phosphorescence.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c8cc00780b | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advanced BiVO-deoxygenated lignocellulosic photocatalyst for effective degradation of organic and heavy metal pollutants in aqueous system.
Int J Biol Macromol
December 2024
Department of Sustainable Bioproducts, Mississippi State University, Mississippi State, United States.
Bismuth vanadate (BiVO) is a common photocatalyst for water remediation, yet its powder form renders difficult to disperse, recycle, and regenerate, limiting photodegradation efficiency. In this study, a lignocellulosic-templated BiVO photocatalyst was fabricated from BiVO precursor and lignocellulose using a simple vacuum impregnation (w/o heat treatment on wood template). Results showed that the modified template retained original hierarchical structure with an increased specific surface area and reduced hemicellulose content, leading to a promising template for uniform distribution of BiVO.
View Article and Find Full Text PDFBioinspired Synthesis of Cucurbalsaminones B and C.
Angew Chem Int Ed Engl
November 2024
Frontiers Science Center for Transformative Molecules, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, No. 800, Dongchuan Road, Shanghai, 200240, China.
Cucurbalsaminones B (1) and C (2) are two abeo-cucurbitane triterpenoids with a unique 5/6/3/6/5-fused ring system and exhibit potent multidrug resistance (MDR)-reversing activity. Herein, we report the first synthesis of these two natural products, both of them were accomplished in 14 steps from commercially available inexpensive resource compound lanosterol. Key features of this synthesis include a biomimetic tandem Wagner-Meerwein type lanostane-to-cucurbitane rearrangement followed by a bioinspired photochemical oxa-di-π-methane (ODPM) rearrangement to complete the skeleton construction and an Eosin Y photoinduced Barton-McCombie deoxygenation to realize the challenging oxidation state adjustment of the sterically hindered C11 position.
View Article and Find Full Text PDFSustainable phosphorescent oscillators based on photochemical deoxygenation in convections.
Chem Commun (Camb)
September 2024
Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China.
Upon constant photo-excitation, the phosphorescence intensities of long-lived triplet emitters dissolved in sulfoxide solvents under air exhibit periodic oscillations with regulatable frequencies and amplitudes, which is attributed to the interplay between photochemical deoxygenation and Rayleigh-Bénard convections.
View Article and Find Full Text PDFPhotochemical Deoxygenative Hydroalkylation of Unactivated Alkenes Promoted by a Nucleophilic Organocatalyst.
Angew Chem Int Ed Engl
February 2024
Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, 19104-6323, Philadelphia, PA, USA.
Article Synopsis
- A novel photochemical reaction is reported that allows for the efficient use of common carboxylic acid derivatives to create carbon-carbon bonds in unactivated alkenes.
- This method is versatile, as it can handle various functional groups and is easy to perform, making it suitable for larger-scale production.
- The process facilitates the synthesis of important compounds, such as suberanilic acid, which is a precursor for the cancer treatment drug vorinostat, and involves a newly identified mechanism using thiol as a catalyst.
Programmable photochemical deoxygenation for 2.5D grayscale printing.
Chem Commun (Camb)
January 2024
Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P. R. China.
Homomolecular photon upconversion-induced radical polymerization in an aerated DMSO solution occurs where molecular oxygen is depleted by sensitized photochemical deoxygenation and this photoreaction could be programmed into 2.5D grayscale printings by digital light processing.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!