Opportunities in Bottlebrush Block Copolymers for Advanced Materials

ACS Nano, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

Bottlebrush block copolymers (BBCPs) are a unique class of materials that contain backbone with densely grafted and chemically distinct polymeric side chains. The nonlinear architecture BBCPs provides numerous degrees freedom in their preparation, including control over key parameters such as grafting density, chain length, arrangement, overall molecular weight. This uniquely branched structure several important distinctions from linear counterparts, sterically induced conformations, rapid large self-assembled nanostructures, reduced or eliminated entanglement effects (assuming sufficient density the weight chains is below respective weight). These allow access to domain sizes, very assembly, ability preferentially add additives and/or precursors one domain, thereby enabling efficient fabrication wide range advanced devices. have been utilized create finely controlled well-ordered nanostructures for use applications, photonic crystals, drug delivery systems, energy conversion, storage devices, components surface coatings. To further deploy templates formation precise having thorough understanding synthesis, self-assembly, templating necessary. explore understand self-assembly subsequent applications BBCPs, this review emphasizes physics (including architectural, rheological, thermodynamic considerations) structure-property relationships between resulting nanostructures. Lastly, we provide an overview current research trends using storage, photonic, 3D printing, applications. We aim researchers fundamentals BBCP nanostructured continue development materials.

Language: Английский

One-Step Multiple Emulsions Driven by Interfacial Neutralization Reaction

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

The multicomponent structure and the large area of oil-water interfaces make multiple emulsions promising for use in cosmetic manufacturing, food industries, agricultural production. However, high energy input extensive emulsifiers process emulsion preparation severely limit their application. In this work, we propose a simple but highly efficient emulsification strategy to realize one-step emulsions. To end, interfacial acid-base neutralization reaction by oleic acid ammonia is employed as driving force construct spontaneous emulsifying system, thus realizing formation low-energy manner. Moreover, products generated can act stabilize both O/W W/O with an O/W/O structure. Compared conventional methods formation, method driven significantly reduce consumption emulsifier dosage during process, avoiding probable environmental problems caused residual emulsifiers. This study not only provides new idea also effectively promotes development low-surfactant methods.

Language: Английский

Recent Progress in Block Copolymer Self‐Assembly for the Fabrication of Structural Color Pigments

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Abstract The self‐assembly of block copolymers (BCPs) into photonic materials has garnered increasing interest due to the versatility and ease fabrication offered by synthesized building blocks. BCPs are highly tunable, with their self‐assembled structures' size being adjustable modifying lengths, molecular weight(M w ), polymer composition. This review provides a concise summary use as pigments, which generate color through structural manipulation rather than relying on chemical pigmentation. These crystal pigments manipulate light behavior, including interference, diffraction, diffusion, specific colors. categorized two types: linear (LBCPs) brush (BBCPs), each involving different monomers that form crystals(PCs). evolution advancements in various practical applications also explored. It concludes suggesting color(SC) based eco‐friendly PCs may replace traditional ones fields such printing ink, biosensing, sensing, adaptive materials.

Language: Английский