Photonic Crystal Films Based on Polymer Particles with a Core/Shell Structure Responding to Ethanol

Iakobson, Olga; Ivan’kova, Elena; Шевченко, Н. Н.

doi:10.1021/acs.langmuir.3c01214

Cited by 6 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, many approaches have been proposed to enhance the stability of colloidal arrays, which can be mainly classified into three strategies: (1) coassembly of microparticles with soft nanoparticles: nanoparticles of small size are embedded into the interstices between microparticles, and simultaneously form a film that tightly bonds onto both microparticles and substrates, thereby locking the colloidal array; − (2) spray of film-forming agent on the colloidal array: the film-forming agent is infiltrated into the interstices of the prepared colloidal array, thereby promoting its mechanical stability; ,,− (3) colloid array fabrication with hard core-soft shell microparticles: the soft shells adhere to each other to form a continuous film during their colloidal assembly process, and hence the colloidal array stability is significantly enhanced. − In our previous study, monodisperse polystyrene (PS) microparticles and polybutyl acrylate (PBA) nanoparticles were used in combination to fabricate ACAs via the infiltration-driven colloidal assembly method; although their mechanical stability was enhanced to a considerable extent, the inhomogeneous distribution of PBA nanoparticles in the interstices between PS microparticles restrained the further improvement of array stability.…”

Section: Introductionmentioning

confidence: 99%

Construction of Steady Amorphous Colloidal Array Patterns via Infiltration-Driven Assembly of Core–Shell Microparticles followed by Short-Time Heating

Lü,

Xu,

Chen

et al. 2023

Langmuir

View full text Add to dashboard Cite

Although core−shell microparticles with a hard core and soft shell are often used to fabricate photonic crystal films, they are rarely applied to construct steady amorphous colloidal array (ACA) patterns. In this work, a series of monodisperse core−shell microparticles with a polystyrene (PS) core and poly(methyl methacrylate-butyl acrylate) (P(MMA-BA)) shell have been successfully synthesized, and the glass transition temperatures (T g ) of the shell layer have been well regulated. The synthesized core−shell microparticles were then used to fabricate ACA patterns via a convenient infiltration-driven assembly method. The results showed that the T g of the shell significantly affected the microstructure of the amorphous colloidal arrays (ACAs). During the assembly process, the microparticles quickly contacted each other and the lower-T g shells could merge with each other to form a continuous film. In this situation, the PS core was embedded and ranked in the P(MMA-BA) film, and both the refractive index contrast and order degree of the colloidal array became relatively low, resulting in a poor structural color. However, when the T g of the shell layer was moderately high, a short-range ordered array was prepared via infiltration-driven assembly, thereby displaying a bright structural color. More importantly, the shell layers could merge with each other to some extent after short-time heating, resulting in fine mechanical stability. In brief, this study provides a facile and environmental approach to construct steady ACA patterns, which is promising in printing and painting industries.

show abstract

Section: Introductionmentioning

confidence: 99%

Construction of Steady Amorphous Colloidal Array Patterns via Infiltration-Driven Assembly of Core–Shell Microparticles followed by Short-Time Heating

Lü,

Xu,

Chen

et al. 2023

Langmuir

View full text Add to dashboard Cite

show abstract

“…The self-assembly of nanosized species into larger structures is a promising approach for the development of functional composite platforms, with potential applications in biotechnology, pharmacy, and medicine [ 1 , 2 , 3 ]. Among the various procedures for developing new biocompatible structures, the systems based on a sequential electrostatic deposition of oppositely charged components on charged surfaces offered a possibility for the successful inclusion of different bioactive molecules.…”

Section: Introductionmentioning

confidence: 99%

Polysaccharide/Carbon Quantum Dots Composite Film on Model Colloidal Particles—An Electro-Optical Study

Milkova

2023

Polymers

View full text Add to dashboard Cite

Negatively charged carbon dots (Cdots) were successfully impregnated into chitosan/alginate film formed on model colloidal particles as a result of the attractive interactions with the chitosan molecules. The electrical properties of the produced films were studied by electrokinetic spectroscopy. In this study, the electric light scattering method was applied for first the time for the investigation of suspensions of carbon-based structures. The electro-optical behavior for the suspension of polymer-coated particles showed that the electric polarizability of the particle-covered layer from alginate was significantly higher compared to that of the layer from chitosan due to the higher charge density of alginate. The presence of a low concentration of Cdots in the film results in partial charge screening. It was confirmed that the polarizability of counterions with lower mobility along the adsorbed polyion chains was responsible for the registered electro-optical effect from the suspension of polymer-coated particles and that the participation of diffuse H+ counterions of Cdots in the creation of the electro-optical effect was negligible. The observed oscillation behavior in the evolution of the film thickness was interpreted through the participation of compensatory effects due to the additional adsorption/desorption of polyelectrolyte complexes from the film surface. The concentration of Cdots in the film was determined, and the loaded amount was ca. 6.6 µg/mL per layer.

show abstract

Surface morphology of core/shell particles and its determining factors

Iakobson,

Ivan’kova,

Popova

et al. 2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Photonic Crystal Films Based on Polymer Particles with a Core/Shell Structure Responding to Ethanol

Cited by 6 publications

References 37 publications

Construction of Steady Amorphous Colloidal Array Patterns via Infiltration-Driven Assembly of Core–Shell Microparticles followed by Short-Time Heating

Construction of Steady Amorphous Colloidal Array Patterns via Infiltration-Driven Assembly of Core–Shell Microparticles followed by Short-Time Heating

Polysaccharide/Carbon Quantum Dots Composite Film on Model Colloidal Particles—An Electro-Optical Study

Surface morphology of core/shell particles and its determining factors

Contact Info

Product

Resources

About