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Excited state dynamics of azanaphthalenes reveal opportunities for the rational design of photoactive molecules.
Commun Chem
January 2025
Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, UK.
Various photoactive molecules contain motifs built on aza-aromatic heterocycles, although a detailed understanding of the excited state photophysics and photochemistry in such systems is not fully developed. To help address this issue, the non-adiabatic dynamics operating in azanaphthalenes under hexane solvation was studied following 267 nm excitation using ultrafast transient absorption spectroscopy. Specifically, the species quinoline, isoquinoline, quinazoline, quinoxaline, 1,6-naphthyridine, and 1,8-naphthyridine were investigated, providing a systematic variation in the relative positioning of nitrogen heteroatom centres within a bicyclic aromatic structure.
View Article and Find Full Text PDFEnhancing photovoltaic efficiency in Half-Tandem MAPbI/ MASnI Perovskite solar cells with triple core-shell plasmonic nanoparticles.
Sci Rep
January 2025
Department of Electrical and Computer Engineering, Aarhus University, Aarhus, 8200, Denmark.
Significant progress has been made through the optimization of modelling and device architecture solar cells has proven to be a valuable and highly effective approach for gaining a deeper understanding of the underlying physical processes in solar cells. Consequently, this research has conducted a two-dimensional (2D) perovskite solar cells (PSCs) simulation to develop an accurate model. The approach utilized in this study is based on the finite element method (FEM).
View Article and Find Full Text PDFHomoarginine concentrations correlate with early depressive symptoms and the reduction in physical functioning within the first days after myocardial infarction.
Sci Rep
January 2025
Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036, Graz, Austria.
Early depressive symptoms within the first days after acute myocardial infarction (AMI) are mainly manifested with performance parameters (lack of energy, concentration difficulties, reduction in physical functioning). Homoarginine (hArg), a non-proteinogenic amino acid, might increase the availability of nitric oxide (NO). NO controls vasodilatation, blood flow, mitochondrial respiration and improves performance.
View Article and Find Full Text PDFAuthor Correction: Ligand-tuning copper in coordination polymers for efficient electrochemical C-C coupling.
Nat Commun
January 2025
School of Chemical and Biomolecular Engineering and The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, Australia.
Copper-Catalyzed Intermolecular [2 + 2 + 2] Annulation of Diynes with Alkynes: Construction of Carbazoles.
Org Lett
January 2025
Key Laboratory of Chemical Biology of Fujian Province and State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Transition-metal-catalyzed [2 + 2 + 2] annulation of alkynes is an efficient pathway for the synthesis of aromatic compounds. However, most of the established methods require noble metal catalysts. Herein, we report a copper-catalyzed intermolecular [2 + 2 + 2] annulation of diynes with alkynes through vinyl cation intermediates, enabling the atom-economical preparation of biologically important carbazole skeletons.
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