We synthesized and characterized novel amphiphilic polyesters with both hydrophilic and hydrophobic functionalities. The polyesters are soluble in organic and aqueous media and reveal the formation of inverse architectures whose behavior could be correlated to their chemical structure. We foresee that the amphiphilic properties of the polyesters reported here are obviously the basis of new architectures both in solution and on the solid surfaces, which could be used in a broad range of applications. The described synthesis of the copolymers is very simple and is based on commercially available products. That makes this approach attractive in various uses.
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http://dx.doi.org/10.1021/la052225z | DOI Listing |
ACS Appl Mater Interfaces
January 2025
Department of Chemistry, University of Victoria, PO Box 1700 Stn CSC, Victoria, BC V8W 2Y2, Canada.
Gold nanoparticles (GNPs) encapsulated in amphiphilic block copolymers are a promising system for numerous biomedical applications, although critical information on the effects of various preparation variables on the structure and properties of this unique type of nanomaterial is currently missing from the literature. In this research, we synthesized GNPs functionalized with thiol-terminated polycaprolactone (PCL-GNPs) before encapsulating them into poly(ε-caprolactone)--poly(ethylene glycol) (PCL--PEG) micellar nanoparticles via nanoprecipitation to yield GNP-loaded polymeric nanoparticles (GNP-PNPs). We explored the role of different manufacturing variables (water volume, PCL--PEG to PCL-GNP ratio, and PEG block length) on the sizes, morphologies, GNP occupancies, colloidal gold concentrations, and time stability of GNP-PNPs.
View Article and Find Full Text PDFJ Control Release
January 2025
Zhejiang Key Laboratory of Smart Biomaterials and Center for Bionanoengineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China. Electronic address:
Efficient and noninvasive drug delivery for glaucoma therapy necessitates prolonged retention on the ocular surface and deep penetration into the cornea. However, inherent physiological defenses such as rapid tear clearance and low cornea permeability present significant challenges that hinder the effectiveness of trans-corneal drug delivery. In this study, we demonstrate the potential of zwitterionic micelles composed of poly(2-(N-oxide-N,N-diethylamino)ethyl methacrylate)-block-poly(ε-caprolactone) (OPDEA-PCL) amphiphiles as a biocompatible carrier for trans-corneal drug delivery.
View Article and Find Full Text PDFJ Phys Chem B
December 2024
Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States.
Despite the advent of novel therapeutics, the efficient delivery of antineoplastic drugs remains a challenge. Biodegradable polymeric micelles represent a promising frontier by offering enhanced drug solubility, tumor targeting, and controlled release profiles. However, the underlying dynamics governing the drug encapsulation and solvation within these micellar structures is still vague and poorly understood.
View Article and Find Full Text PDFChem Sci
October 2024
Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University 4800 Caoan Road Shanghai 201804 China
A key challenge in polymer synthesis is to develop new methods that enable block copolymers to be prepared from mixed monomer feedstock. The emerging switchable polymerization catalysis can generate block copolymers with well-defined structures and tunable properties from monomer mixtures. However, constrained by the reactivity of monomers and the incompatibility of different polymerization mechanisms, this method is usually confined to oxygenated monomers.
View Article and Find Full Text PDFBiomacromolecules
November 2024
Department of Chemistry, Indian Institute of Science Education and Research (IISER Pune), Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India.
Biodegradable polymers from bioresources are highly in demand for the development of sustainable polymer platforms for commodity plastics and in the biomedical field. Here, an elegant one-pot synthetic strategy is developed, for the first time, to access unexplored hybrid polymers from two naturally abundant resources: carbohydrates (sugars) and l-amino acids. A bottleneck in the synthetic strategy is overcome by tailor-making d-mannitol-based six- and five-membered bicyclic acetalized diols, and their structures are confirmed by single-crystal X-ray diffraction and 2D NMR spectroscopy.
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