We have established a facile and efficient protocol for the generation of germyl radicals by employing photo-excited electron transfer (ET) in an electron donor-acceptor (EDA) complex to drive hydrogen-atom transfer (HAT) from germyl hydride (RGeH). Using a catalytic amount of EDA complex of commercially available thiol and benzophenone derivatives, the ET-HAT cycle smoothly proceeds simply upon blue-light irradiation without any transition metal or photocatalyst. This protocol also affords silyl radical from silyl hydride.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1002/chem.202401546 | DOI Listing |
Org Lett
December 2024
Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
A method was found to construct sulfur-containing five- and six-membered heterocyclic alkyl sulfonyl compounds by using visible light and free radicals activated and/or generated by EDA complexes/homolytic cleavage as initiators to stimulate the relay reaction of alkynes/alkynones. This method puts forward a new strategy to initiate alkyl sulfonation of alkynes/alkynones with only a catalytic amount of the initiator. This strategy of generating the initiator by EDA complex activation/homolytic cleavage provides a new idea for the following substances that must be excited.
View Article and Find Full Text PDFBr J Educ Psychol
December 2024
Institute of Education, Tsinghua University, Beijing, China.
Background: Cognitive load theory is widely used in educational research and instructional design, which relies heavily on conceptual constructs and measurement instruments of cognitive load. Due to its implicit nature, cognitive load is usually measured by other related instruments, such as commonly-used self-report scales of mental effort or task difficulty. However, these concepts are different in nature, as they emphasize distinct perspectives on cognitive processing.
View Article and Find Full Text PDFPLoS One
December 2024
Institute of Chinese Studies, Hang Chiang University College, George Town, Penang, Malaysia.
The article examines the spatial distribution characteristics and influencing factors of traditional Tibetan "Bengke" residential architecture in Luhuo County, Ganzi Tibetan Autonomous Prefecture, Sichuan Province. The study utilizes spatial statistical methods, including Average Nearest Neighbor Analysis, Getis-Ord Gi*, and Kernel Density Estimation, to identify significant clustering patterns of Bengke architecture. Spatial autocorrelation was tested using Moran's Index, with results indicating no significant spatial autocorrelation, suggesting that the distribution mechanisms are complex and influenced by multiple factors.
View Article and Find Full Text PDFClin EEG Neurosci
December 2024
Laboratoire de Psychologie Médicale et d'Addictologie, ULB Neuroscience Institute, CHU Brugmann - Université Libre de Bruxelles (U.L.B.), Brussels, Belgium.
Recognized as a transdiagnostic factor, emotion regulation (ER) is increasingly embedded into conceptualizations of psychopathology development and maintenance, emerging as a core component of treatment methodologies. Therefore, the incorporation of ER into various facets of affective sciences, including theoretical frameworks, experimental paradigms, assessment methods, and intervention strategies, raises new challenges, particularly regarding the measurement of ER. In the evaluation and understanding of complex, multifaceted processes like ER, the combination of different assessment methods encompassing diverse units of analysis across multiple domains encompassing cerebral, physiological, and behavioral measures can prove particularly interesting.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Institute of Chemistry of Komi Scientific Centre of the Ural Branch of the Russian Academy of Sciences, Pervomayskaya st. 48, Syktyvkar 167000, Komi Republic, Russian Federation. Electronic address:
The study is dedicated to the synthesis, rheological properties, hemocompatibility, and further modification of water-soluble derivatives of sodium alginate containing fragments of ethylenediamine (Alg-EDA). Alg-EDA with an equal ratio of amide/amine groups and varying degrees of substitution were synthesized by the carbodiimide method. The influence of the molecular weight of Alg-EDA on the attachment of bioactive molecules such as hydroxybenzoic and ferulic acids was determined.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!