Hothesis: Because of their flexible structure and adjustable color, structural colors with non-close-packed colloidal crystal arrays (NCCAs) have broad applications. However, most of these structural colors are limited by an approximate refractive index or high background scattering, and they present an unsatisfactory color that seriously hinders their practical application. Preparation of particles with a high refractive index or adsorption coefficient may be an effective approach to construct highly colorimetric NCCA structural colors in a nonaqueous solvent. The aim of this study was to explore the formation process of NCCA by the assembly of colloidal particles in a nonaqueous solvent, so as to fabricate NCCAs with a high refractive index and high adsorption.
Experiments: An attempt was made to fabricate the NCCA structural color by dispersing the desired particles in a 2-hydroxyethyl methacrylate (HEMA) solvent. Surface-functionalized poly(methyl methacrylate) (PMMA) particles were developed by emulsifier-free emulsion polymerization. The formation of NCCA was studied by comparing the dispersion of three classes of surface-functionalization of colloidal particles in the HEMA solvent. The melanin-like particles with a high refractive index and a high adsorption coefficient were synthesized by doping polydopamine (PDA) into good surface-functionalization particles by emulsifier-free emulsion polymerization. A highly colorimetric poly(2-hydroxyethyl methacrylate) (pHEMA) optical film with NCCA was fabricated by dispersing the melanin-like particles in a pHEMA hydrogel.
Findings: PMMA-HEMA colloidal particles could successfully construct a NCCA structure in a nonaqueous HEMA solvent because of the solvation. Based on the "good particles," PMMA-HEMA-PDA colloidal particles, an initial 3-hydroxytyramine hydrochloride (DA·HCl) concentration of 1.926 mM was shown to significantly improve the colorimetric value of the final solidified NCCA hydrogel. These results provided an important reference for the construction of surfactant-free HEMA non-close-packed colloidal crystals. This highly colorimetric structurally colored hydrogel may be widely used in the design of a variety of colored intelligent sensors and soft devices.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2020.07.067 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Medium entropy-derived flower-like FeCeCu nanozyme with excellent oxidase-like activity for on-site and visual detection of carbosulfan.
Anal Chim Acta
February 2025
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China. Electronic address:
Background: Carbosulfan residues in environment is very harmful to human health. The rapid and high sensitive detection of carbosulfan residues is particularly important to guarantee human health and safety. The conventional chromatographic techniques and enzyme inhibition strategies cannot realize on-site and visual detection of carbosulfan.
View Article and Find Full Text PDFNPC2, a seminal plasma protein with membrane cholesterol-binding ability, influences the cryotolerance and functionality of spermatozoa from Chino Santandereano bulls.
Anim Reprod Sci
December 2024
Faculty of Veterinary Medicine, University Antonio Nariño, Popayán, Colombia. Electronic address:
Despite Latin America's rich biodiversity, active genetic material conservation programs are scarce. This study investigates potential freezability markers in both sperm and seminal plasma (SP) in Chino Santandereano, a Colombian Creole breed. Thirty ejaculates from ten Chino Santandereano bulls were cryopreserved and subsequently classified as of good (GFE) or poor (PFE) freezability according to their post-thaw total sperm motility (TMOT) and plasma membrane integrity (PMI).
View Article and Find Full Text PDFTotal Antioxidant and Oxidative Status as Potential Biomarkers of Alcohol Overdose.
Int J Mol Sci
December 2024
Department of Hygiene, Epidemiology, and Ergonomics, Medical University of Bialystok, 15-269 Bialystok, Poland.
Serious alcohol-associated hazards underscore the need to develop new biomarkers reflecting the biological changes caused by chronic alcohol use and predicting the risk of alcohol-related death. Oxidative stress is one mechanism of alcohol toxicity. The blood and urine redox status (total antioxidant capacity [TAC], total oxidative status [TOS], and oxidative stress index [OSI]) was assessed in 105 people who died a sudden death (controls), 47 people who died of alcohol overdose, and 102 people with alcohol dependency.
View Article and Find Full Text PDFDual-Response UV Radiation Detector Based on Color Switching and Photoresistance Response for UV Radiation Monitoring.
ACS Appl Mater Interfaces
January 2025
Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Key Laboratory of Photosensitive Materials & Devices of Liaoning Province, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, People's Republic of China.
Ultraviolet (UV) irradiation is dangerous and can cause serious skin diseases if skin is excessively exposed to it. Thus, it is highly desirable for human health to monitor the UV radiation intensity. In this report, a flexible and stretchable dual-response UV radiation detector is reported by integrating UV-responsive color-switchable WO quantum dots (QDs) with an electrical hydrogel.
View Article and Find Full Text PDFIntramolecular distance-regulated G4 DNA enzymatic activity-based chromophotometric system for visual monitoring of diquat.
Anal Chim Acta
January 2025
Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China. Electronic address:
Background: As global food production continues to surge, the widespread use of herbicides has also increased concurrently, posing challenges like health risks and environmental pollution. Traditional detection methods for pesticide residues, such as diquat (DQ), were hampered by limitations like high expenses, lengthy detection times and complex operations, restricting their practical application in rapid clinical diagnosis.
Results: In light of the pressing necessity for the identification of minute pesticide residues and the intrinsic constraints of small molecule analysis, a novel chromophotometric biosensor targeting small molecules was developed based on bi-epitopes on single antibody to immobilize two DQ-PAL, inhibiting the hybridization of DQ-PAL.
Want 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!