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Simple A-D-A Nonfullerene Acceptors for Efficient Binary Bulk Heterojunction Organic Solar Cells.
ACS Appl Mater Interfaces
January 2025
Département de chimie, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada.
Two new nonfused ring nonfullerene electron acceptors, NFAs, (dicarbazolyl)bis(2-(3-oxo-2,3-dihydro-1-inden-1-ylidene)malononitrile) () and -(2-(5,6-fluoro-3-oxo-2,3-dihydro-1-inden-1-ylidene)malononitrile) (), thus exhibiting an A-D-A motif, were synthesized and characterized. As thin films, they exhibit the lowest energy absorption signature near 540 nm, extending down to ∼700 nm. This band is due to an intramolecular charge transfer process from the (nonfused dicarbazoyl; ) moiety to the malononitrile-based units () based on density functional theory calculations (DFT), which are also corroborated by time-dependent DFT (TDDFT) computations.
View Article and Find Full Text PDFTemplate-Assisted Electrospinning and 3D Printing of Multilayered Hierarchical Vascular Grafts.
J Biomed Mater Res B Appl Biomater
January 2025
Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Szczecin, Poland.
Fabricating complex hierarchical structures mimicking natural vessels and arteries is pivotal for addressing problems of cardiovascular diseases. Various fabrication strategies have been explored to achieve this goal, each contributing unique advantages and challenges to the development of functional vascular grafts. In this study, a three-layered tubular structure resembling vascular grafts was fabricated using biocompatible and biodegradable copolymers of poly(butylene succinate) (PBS) using advanced manufacturing techniques.
View Article and Find Full Text PDFA new evidence-based design-of-experiments approach for optimizing drug delivery systems with exemplification by emulsion-derived Vancomycin-loaded PLGA capsules.
Sci Rep
December 2024
Faculty of Materials Science and Engineering, K. N. Toosi University of Technology, Tehran, Iran.
This paper introduces an evidence-based, design-of-experiments (DoE) approach to analyze and optimize drug delivery systems, ensuring that release aligns with the therapeutic window of the medication. First, the effective factors and release data of the system are extracted from the literature and meta-analytically undergo regression modeling. Then, the interaction and correlation of the factors to each other and the release amount are quantitatively assessed.
View Article and Find Full Text PDFFolic Acid-Decorated Chitosan-PLGA Nanobiopolymers for Targeted Drug Delivery to Acute Lymphoblastic Leukemia Cells: Studies.
Technol Cancer Res Treat
December 2024
Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
Objectives: This study developed a drug delivery system (DDS) using folic acid (FA)-functionalized chitosan (CS) and poly (lactic-co-glycolic acid) (PLGA) nanocarriers for targeted sodium butyrate (NB) delivery to leukemia cells (NALM6). The goal was to enhance NB's therapeutic efficacy while reducing its cytotoxicity to non-malignant cells.
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[Development of Biological Microchips on an Aluminum Support with Cells Made of Brush Polymers].
Mol Biol (Mosk)
December 2024
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, 119991 Russia.
A method has been developed for manufacturing biological microchips on an aluminum substrate with hydrophilic cells from brush copolymers with the formation of a matrix of cells using photolithography. The surface of aluminum substrates was previously coated with a thin, durable, moderately hydrophobic layer of cross-linked polymer to prevent contact with the aluminum surface of the components used in the analysis of nucleic acids. Aluminum biochip substrates have high thermal conductivity and low heat capacity, which is important for the development of methods for multiplex PCR analysis on a chip.
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