Mussel-inspired polydopamine (PDA) coatings have gained significant attention in various fields, including biomedicine, energy, detection, and UV protection, owing to their versatile and promising properties. Among these properties, UV shielding stands out as a key feature of PDA coatings. Nevertheless, the current methods for tuning the UV-shielding properties of PDA coatings are quite limited, and only rely on thickness adjustment, which might involve additional issues like color and visible light transmittance to the coating layer. In this study, we propose a facile and modular approach to enhance the UV absorption of PDA coatings by incorporating thiol-heterocycle (TH) derivatives. Both pre- and post-modification strategies can effectively impede the formation of conjugated structures within PDA, leading to enhanced UV absorption within the PDA layers. More importantly, these strategies can improve the UV absorption of PDA coatings while reducing the visible light absorption. Furthermore, this method enabled efficient regulation of the UV absorption of PDA coatings by altering the ring type (benzene ring or pyridine ring) and substituent on the ring (methoxyl group or hydrogen atom). These PDA coatings with enhanced UV absorption demonstrate great promise for applications in UV protection, antibacterial activity, wound healing and dye degradation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d4mh00109e | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Rapid detection of frogeye leaf spot pathogen in seeds by LAMP assays to protect soybean production.
Plant Dis
March 2025
Jilin Agricultural University, 2888 Xincheng Street, Changchun, China, 130018;
Frogeye leaf spot (FLS), caused by Cercospora sojina, is a significant disease affecting soybean crops economically. Seed inspection plays a vital role in reducing the incidence of this disease. However, limited research has been conducted on the fast and accurate identification of C.
View Article and Find Full Text PDFBreathable and Self-Healing Photothermal Superhydrophobic Coating Featuring Exceptional Liquid Impalement Resistance and Anti-/Deicing Capabilities for Concrete Materials.
ACS Appl Mater Interfaces
March 2025
State Key Laboratory of Engineering Materials for Major Infrastructure and Jiangsu Key Laboratory of Construction Materials, School of Material Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, P. R. China.
Ice accumulation and moisture condensation pose significant challenges to the longevity and performance of modern architectural materials. Superhydrophobic anti-icing coatings often suffer mechanical and chemical degradation, particularly in outdoor settings subject to heavy rain or impact. Additionally, most existing coatings are airtight, leading to humidity accumulation and potential substrate deterioration, especially in cement-based materials.
View Article and Find Full Text PDFMicro-Nano Conductive Network Structured Aramid Paper-Based Self-Supporting Cathode Enhances Cycling Stability in Lithium-Sulfur Battery.
ACS Appl Mater Interfaces
March 2025
College of Bioresources Chemical & Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China.
Lithium-sulfur batteries (LSBs) continue to encounter significant challenges in practical applications, primarily attributed to the low electrical conductivity of the cathode active material sulfur, volume expansion during cycling and the uncontrolled shuttle effect of lithium polysulfides (LiPSs). In this work, flexible meta-aramid fibrids (AFs) were innovatively introduced, and polydopamine (PDA) was employed to effectively adhere highly conductive multiwalled carbon nanotubes (MWCNTs) to the AFs surface, thereby forming nanoscale conductive pathways. A wet-laid process analogous to aramid paper-making was utilized to enhance interfacial bonding between AFs and rigid carbon fibers (CFs), resulting in a self-supporting paper-based cathode material with a uniform, dense three-dimensional micronano-scale conductive network and stable structure.
View Article and Find Full Text PDFIt is important to monitor refractive index (RI) and temperature (T) simultaneously for photo-thermal therapy (PTT) in the blood circulation system. However, the fluctuation of T sways the RI response owing to high cross-sensitivity. To address the issue, a fiber-optic-based localized surface plasmon resonance (LSPR) sensor with a cascaded structure of a single-mode fiber-multimode fiber-single-mode fiber (SMF-MMF-SMF) is presented for synchronous measurement of RI and T.
View Article and Find Full Text PDFMultifunctional composite hydrogels based on hydroxypropyl cellulose for catalytic degradation of organic pollutants and high-performance wearable sensors.
Int J Biol Macromol
March 2025
School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China.
In this paper, the dispersion stability of graphene was effectively promoted by the introduction of hydroxypropyl cellulose (HPC), a novel composite hydrogel PAM-LMA-PDA@TiO-GN was prepared. Polyacrylamide (PAM) provided the basic three-dimensional network structure, lauryl methacrylate (LMA), as the hydrophobic monomer, constructed the hydrophobic associative micro-regions inside the hydrogel, which enhanced the structural stability, and polydopamine-coated TiO (PDA@TiO), as a nano-toughness enhancement point, which endowed the hydrogel with a stress and strain of 1026 kPa and 2519 %, respectively. Hydrogels loaded with Ag nanowires (Ag NWs) and graphene (GN) were prepared using Ag nanowires as the intercalating agent, graphene as the substrate and hydrogel as the carrier, graphene and Ag nanowires endow the hydrogels with excellent electron transport capabilities.
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!