CdS nanoparticles of 4.5 nm diameter were synthesized in poly(2-vinylpyridine) micellar cores which were obtained by solvating a polystyrene-block-poly(2-vinylpyridine) block copolymer in polystyrene-selective toluene. Then, a C(60) -toluene solution was dispersed into the CdS micelle solution with stirring. This led to the well-defined organization of two different nanoparticles; specifically: a CdS NP decorated by several/dozens of C(60) molecules, because C(60) molecules were strongly coordinated with pyridine molecules in the micellar cores by charge-transfer complexation C 60δ--P2VP(δ+) . A harmoniously organized CdS/C(60) micellar structure was clearly verified by transmission electron microscopy. Fluorescent quenching of CdS nanoparticles, which was strongly affected by neighboring C(60) molecules, was observed.
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http://dx.doi.org/10.1002/marc.200900036 | DOI Listing |
J Control Release
December 2024
State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, Jiangsu 210009, China; Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing, Jiangsu 210009, China; NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients, China Pharmaceutical University, Nanjing, Jiangsu 210009, China.. Electronic address:
Pulmonary fibrosis (PF) is an inevitable phase of many respiratory diseases with high mortality and limited effective treatments in the clinic. In PF, aberrant extracellular matrix (ECM) deposition is a significant pathological structural alteration that blocks intercellular crosstalk and hinders the deep penetration of therapeutics into lung tissues, reducing the effectiveness of conventional treatment strategies. Herein, a penetrating enhancer (Lipo) composed of thermosensitive liposome shells loaded with collagenase IV and micellar cores containing thioketal bonds encapsulated with curcumin and decorated with cyclic RGDfc, is developed to alleviate PF.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2024
Department of Chemistry and Chemical Engineering, Inha University, Incheon 22212, Republic of Korea.
The drive to enhance the operational durability and reliability of stretchable and wearable electronic and electrochemical devices has led to the exploration of self-healing materials that can recover from both physical and functional failures. In the present study, we fabricated a self-healable solid polymer electrolyte, referred to as an ionogel, using reversible hydrogen bonding between the ureidopyrimidone units of a block copolymer (BCP) network swollen in an ionic liquid (IL). The BCP consisted of poly(styrene--(methyl acrylate--ureidopyrimidone methacrylate)) [poly(S--(MA--UPyMA)], with the IL-phobic polystyrene forming micellar cores that were interconnected via intercorona hydrogen bonding between the ureidopyrimidone units.
View Article and Find Full Text PDFJ Phys Chem B
September 2024
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
The aggregation behavior of two amphiphilic hyperbranched copolymers of poly[oligo(ethylene glycol) methacrylate--lauryl methacrylate] (H-[P(OEGMA--LMA)]) at the air/water interface was investigated by using the Langmuir film balance technique and atomic force microscopy (AFM). At the air/water interface, H-[P(OEGMA--LMA)] copolymers spontaneously form the ultrafine network-like monolayer structures of micelles; each micelle consists of a tiny hydrophobic core of one or two carbon backbones and lauryl side groups and a short hydrophilic shell of oligo(ethylene glycol) (OEG) side groups, and the micellar cores are connected by the branching agent ethylene glycol dimethacrylate (EGDMA). These ultrafine micellar structures are successfully revealed by our relative aggregation number method presented in this work, which is based on our previous relative mass method and methylene number method.
View Article and Find Full Text PDFMacromolecules
July 2024
Department of Chemistry and Macromolecular Studies Group, Louisiana State University, Baton Rouge, Louisiana 70803, United States.
IET Nanobiotechnol
June 2024
Department of Pharmaceutical Engineering, College of Pharmacy, Inner Mongolia Medical University, Hohhot, China.
Although quercetin is low cytotoxicity to normal human cells, quercetin is effective against the growth of some tumors. Given the poor blood stability in vivo, insolubility, low delivery efficiency, and poor medicinal properties of quercetin, we developed a local drug delivery system comprising quercetin core's polymer micelles and F127 hydrogel stroma. In vitro evaluation revealed that quercetin core's polymer micelles have excellent antitumor activity and could inhibit the multiplication of 4T1 breast cancer cells through the apoptosis pathway.
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