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Hot shape transformation: the role of PSar dehydration in stomatocyte morphogenesis.
Beilstein J Org Chem
January 2025
Institute of Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands.
Polysarcosine emerges as a promising alternative to polyethylene glycol (PEG) in biomedical applications, boasting advantages in biocompatibility and degradability. While the self-assembly behavior of block copolymers containing polysarcosine-containing polymers has been reported, their potential for shape transformation remains largely untapped, limiting their versatility across various applications. In this study, we present a comprehensive methodology for synthesizing, self-assembling, and transforming polysarcosine-poly(benzyl glutamate) block copolymers, resulting in the formation of bowl-shaped vesicles, disks, and stomatocytes.
View Article and Find Full Text PDFTailoring pyridine bridged chalcogen-concave molecules for defects passivation enables efficient and stable perovskite solar cells.
Nat Commun
January 2025
National Key Laboratory of Electronic Films and Integrated Devices, School of Integrated Circuit Science and Engineering, University of Electronic Science and Technology of China, Chengdu, P. R. China.
Suppressing deep-level defects at the perovskite bulk and surface is indispensable for reducing the non-radiative recombination losses and improving efficiency and stability of perovskite solar cells (PSCs). In this study, two Lewis bases based on chalcogen-thiophene (n-Bu4S) and selenophene (n-Bu4Se) having tetra-pyridine as bridge are developed to passivate defects in perovskite film. The uncoordinated Pb and iodine vacancy defects can interact with chalcogen-concave group and pyridine group through the formation of the Lewis acid-base adduct, particularly both the defects can be surrounded by concave molecules, resulting in effective suppression charge recombination.
View Article and Find Full Text PDFFlexible Morphological Regulation of Photothermal Nanodrugs: Understanding the Relationship between the Structure, Photothermal Effect, and Tumoral Biodistribution.
ACS Nano
January 2025
Bio-Organic Chemistry, Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
The morphology of nanodrugs is of utmost importance in photothermal therapy because it directly influences their physicochemical behavior and biological responses. However, clarifying the inherent relationship between morphology and the resultant properties remains challenging, mainly due to the limitations in the flexible morphological regulation of nanodrugs. Herein, we created a range of morphologically controlled nanoassemblies based on poly(ethylene glycol)--poly(d,l-lactide) (PEG-PLA) block copolymer building blocks, in which the model photosensitizer phthalocyanine was incorporated.
View Article and Find Full Text PDFPlanar and Curved π-Extended Porphyrins by On-Surface Cyclodehydrogenation.
J Am Chem Soc
December 2024
Molecular Surface Science Group, Empa, 8600 Dübendorf, Switzerland.
Recent advancements in on-surface synthesis have enabled the reliable and predictable preparation of atomically precise low-dimensional materials with remarkable properties, which are often unattainable through traditional wet chemistry. Among these materials, porphyrins stand out as a particularly intriguing class of molecules, extensively studied both in solution and on surfaces. Their appeal lies in the ability to fine-tune their unique chemical and physical properties through central metal exchange or peripheral functionalization.
View Article and Find Full Text PDFOne-Step Preparation of Both Micron and Nanoparticles.
Polymers (Basel)
November 2024
School of Chemistry & Chemical Engineering, Linyi University, Linyi 276000, China.
Article Synopsis
- The study focuses on the synthesis of complex materials made of micron and nanometer-sized particles (MNPs) using a one-pot soap-free emulsion polymerization method.
- The process involves creating a SiO shell around the particles while allowing mixed monomers to migrate and polymerize into distinct bowl-shaped micron particles and popcorn-like nano-particles.
- The resulting MNPs show a specific size distribution, with micron particles around 1.4 μm and nano-particles at 130 nm, and have potential applications in multifunctional coatings due to their film-forming properties.
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