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Chemical upcycling of polybutadiene into size controlled α,ω-dienes and diesters sequential hydrogenation and cross-metathesis.
Chem Sci
January 2025
Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven Celestijnenlaan 200F, Post Box 2454 3001 Leuven Belgium
Plastic waste conversion into valuable chemicals is a promising alternative to landfill or incineration. In particular, the chemical upcycling of polybutadiene rubber (PBR) could provide a renewable route towards highly desirable α,ω-dienes with varying chain lengths, which can find ample industrial application. While previous research has shown that the treatment of polybutadiene with a consecutive hydrogenation and ethenolysis reaction can afford long-chain α,ω-dienes, achieving precise control over the product chain length remains an important bottleneck.
View Article and Find Full Text PDFPlant growth promotion via priming with volatile organic compounds emitted from strain EXTN-1.
Front Microbiol
January 2025
Research Institute of International Agriculture, Technology and Information, Hankyong National University, Anseong-si, Republic of Korea.
Volatile organic compounds (VOCs) produced by potential plant growth-promoting rhizobacteria (PGPR) play an important role in plant interactions. However, the mechanisms underlying this phenomenon are not well understood. Our findings show that the influence of VOCs from the PGPR strain (EXTN-1) on tobacco plant growth is dependent on the culture media used.
View Article and Find Full Text PDFTherapeutic functions of medical implants from various material categories with integrated biomacromolecular systems.
Front Bioeng Biotechnol
January 2025
Federal University of Alagoas, Center of Technology, Maceió, Brazil.
Medical implants are designed to replace missing parts or improve body functions and must be capable of providing structural support or therapeutic intervention for a medical condition. Advances in materials science have enabled the development of devices made from metals, polymers, bioceramics, and composites, each with its specific advantages and limitations. This review analyzes the incorporation of biopolymers, proteins, and other biomacromolecules into implants, focusing on their role in biological integration and therapeutic functions.
View Article and Find Full Text PDFRedox-Gated Optical Modulation of Coumarin-Triphenyliminophosphorane Fluorophores.
ACS Phys Chem Au
January 2025
Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung 402, Taiwan.
Novel coumarin-triphenyliminophosphorane (TPIPP) fluorophores, synthesized via a nonhydrolytic Staudinger reaction, exhibit remarkable redox-responsive optical properties. Upon chemical and electrochemical oxidation, these compounds display a hypsochromic shift in absorption from 430 to 350 nm, accompanied by up to 11-fold fluorescence enhancement under 405 nm excitation. The fluorescence switching occurs at an electrochemical oxidation potential of approximately +2.
View Article and Find Full Text PDFThe manipulation of odor availability of training aids used in detection canine training.
Front Allergy
January 2025
Schmid College of Science and Technology, Chapman University, Orange, CA, United States.
Detection canines can identify numerous substances for which they have been trained. Historically, and a point of ongoing contention, detection canine threshold (i.e.
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