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White light-emitting electrochemical cells based on metal-free TADF emitters.
Nat Commun
January 2025
The Organic Photonics and Electronics Group, Department of Physics, Umeå University, Umeå, Sweden.
The attainment of white emission from a light-emitting electrochemical cell (LEC) is important, since it enables illumination and facile color conversion from devices that can be cost-efficient and sustainable. However, a drawback with current white LECs is that they either employ non-sustainable metals as an emitter constituent or are intrinsically efficiency limited by that the emitter only converts singlet excitons to photons. Organic compounds that emit by thermally activated delayed fluorescence (TADF) can address these issues since they can harvest all excitons for light emission while being metal free.
View Article and Find Full Text PDFNovel multiparameter optical sensor head design for marine environments.
Talanta
January 2025
DCU Water Institute, School of Chemical Sciences, Dublin City University, Ireland. Electronic address:
Anthropogenic activities have led to increased stress on our marine and other aquatic environments. There is a pressing need to monitor, measure, understand and mitigate causes of these pressures. This paper presents a novel optical head for monitoring and measuring marine based optical phenomena.
View Article and Find Full Text PDFPharmacognistic, proximate and phytochemical analysis of stem of Cistanche tubulosa (Schenck) Hook. F.
Cell Mol Biol (Noisy-le-grand)
January 2025
Department of Chemistry, Rabigh College of Sciences and Arts, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
A medicinal plant is any plant that in one or more of its organs contains substances that can be used by it or their constituent for therapeutic purposes. The present work was done to evaluate pharmacognostic, fluorescence, proximate and phytochemical analysis of ethanolic extracts of Cistanche tubulosa (Orobanchaceae) along with antimicrobial activity. Antimicrobial activity against four bacterial strains S.
View Article and Find Full Text PDFNetwork-Based Methods for Deciphering the Oxidizability of Complex Leachate DOM with OH/O via Molecular Signatures.
Environ Sci Technol
January 2025
School of Environmental Science and Engineering, Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai Jiao Tong University, Shanghai 200240, China.
In landfill leachates containing complex dissolved organic matter (DOM), the link between individual DOM constituents and their inherent oxidizability is unclear. Here, we resolved the molecular signatures of DOM oxidized by OH/O using FT-ICR MS, thereby elucidating their oxidizability and resistance in concentrated leachates. The comprehensive gradual fragmentation of complex leachate DOM was then revealed through a modified machine-learning framework based on 43 key pathways during ozonation.
View Article and Find Full Text PDFLately, important advancements in visualizing RNAs in fixed and live cells have been achieved. While mRNA imaging techniques are well-established, the development of effective methods for studying non-coding RNAs (ncRNAs) in living cells are still challenging but necessary, as they show a variety of functions and intracellular localizations, including participation in highly dynamic processes like phase-transition, which is still poorly studied in vivo. Addressing this issue, we tagged two exemplary ncRNAs with the fluorescent RNA (fRNA) Pepper.
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