We introduce a facile and effective fabrication of complex multimetallic nanostructures through block copolymer self-assembly. Two- and three-dimensional complex nanostructures, such as "nanomesh," "double-layered nanomeshes," and "surface parallel cylinders on nanomesh," can be fabricated using the self-assembly of perforated lamellar morphology in block copolymer thin films. Simultaneous integration of various metallic elements, including Pt, Au, and Co, into the self-assembled morphologies generates multimetal complex nanostructures with highly interconnected morphology and a large surface. The resultant metal nanostructures with a large surface area, robust electrical connectivity, and well-defined alloy composition demonstrate a high-performance electrochemical catalysis for hydrogen evolution reaction (current density: 6.27 mA/cm@0.1 V and Tafel slope: 43 mV/dec).
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.7b03319 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Xanthium-Inspired Microsphere Morphology Depends on the Dual Self-Assembly Behavior of Macromolecules.
Macromol Rapid Commun
January 2025
Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610213, P. R. China.
The self-assembly of macromolecular segments promotes the fabrication of polymer microspheres with multiple morphologies. Inspired by the xanthium shells, A dual-driven self-assembly method have defined that enables the construction of multi-dimensional morphologies on the microsphere surface at emulsion-confined interfaces. The two driving forces are derived from the phase separation caused by the immiscibility of macromolecular segments and the different interactions between chain segments of different hydrophilicity and water molecules.
View Article and Find Full Text PDFHow tailor-made copolymers can control the structure and properties of hybrid nanomaterials: the case of polyionic complexes.
Nanoscale
January 2025
Laboratoire Softmat, Université de Toulouse, CNRS UMR 5623, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
Hybrid polyionic complexes (HPICs) are colloidal structures with a charged core rich in metal ions and a neutral hydrophilic corona. Their properties, whether as reservoirs or catalysts, depend on the accessibility and environment of the metal ions. This study demonstrates that modifying the coordination sphere of these ions can tune the properties of HPICs by altering the composition of the complexing block or varying formulation conditions.
View Article and Find Full Text PDFPolycarbonate-Based Polymersome Photosensitizers with Cell-Penetrating Properties for Improved Killing of Cancer Cells.
Biomacromolecules
January 2025
School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
Polymer-based photosensitizers have found various applications in photodynamic therapy (PDT). However, the absence of targeting ability commonly results in a substantial reduction in photosensitizer accumulation at the tumor site, significantly limiting the therapeutic efficacy of the system. In addition, the development of biodegradable polymeric photosensitizers is of critical importance for biological applications.
View Article and Find Full Text PDFHot 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 PDFControllable Self-Assembly Morphologies of PPV-Based Block Copolymers.
Chemistry
January 2025
Southern University of Science and Technology, Chemistry, 1088 Xueyuan Blvd., Xili, Nanshan District, 518055, Shenzhen, CHINA.
Poly(p-phenylenevinylene) (PPV) is a classic semiconducting π-conjugated polymers with outstanding optical and electronic properties, which shows important applications in the fields of optoelectronic, such as organic light-emitting diodes (OLEDs), organic solar cells (OSCs), and organic field-effect transistors (OFETs). In the working process of the device, the microstate of PPV decides its property. Therefore, it is significant to achieve ordered morphologies based on PPV at micro scale.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!