Polydopamine used as Hollow Capsule and Core–Shell Structures for Multiple Applications

NANO ◽  
2015 ◽  
Vol 10 (05) ◽  
pp. 1530003 ◽  
Author(s):  
Xinyu Cui ◽  
Yuanyuan Yin ◽  
Zuo Ma ◽  
Yongkui Yin ◽  
Yue Guan ◽  
...  

Polydopamine (PDA) capsule and core–shell structures with tailored structures and properties are of particular interests due to their multifunctions and potential applications as new colloidal structures in diverse fields. Among the available fabrication methods, PDA film onto colloidal particles followed by selective template removal has attracted extensive attention due to its advantages of precise control over the size, wall thickness and functions of the obtained capsules. The past several years has witnessed a rapid increase of research concerning the new fabrication strategies, functionalization and applications of this kind of capsules and core–shell structures, particularly in many fields such as drug delivery, catalysis, antibacterial, etc. In this review, the very recent progress of the capsule and core–shell structures based on PDA are summarized. There are basically two sections, including the fabrication process of PDA capsules, core–shell structures, and the various applications based on PDA.

2019 ◽  
Vol 7 (8) ◽  
pp. 3516-3530 ◽  
Author(s):  
Kuo-Chuan Ho ◽  
Lu-Yin Lin

This review article outlines the most commonly used methods for making the core/shell structures as the active materials for supercapacitors over the past decade (2007–2018), and points out the most efficient combination of the material categories and morphologies for the core/shell structure.


Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 79
Author(s):  
Wonmi Shim ◽  
Chan Sik Moon ◽  
Hyeonjin Kim ◽  
Hyun Su Kim ◽  
Haoxiang Zhang ◽  
...  

Surface-templated evaporation driven (STED) method is a promising method to fabricate supraparticles with various sizes, porosities, and shapes by drying colloidal dispersion drops on liquid repellent surfaces. Until now, for the method, only spherical shaped colloidal particles have been used as primary colloids. Here, we introduce six different shapes of nano-colloidal dispersions for the STED method: nanocubics, nanoplates, nanosheets, coffin-shaped nanoparticles (NPs), spherical NPs, and aggregates of NPs. It is confirmed that the shape and size of the primary colloids have little effect for drying the dispersion drop when a single component colloidal dispersion is dried. For heterogeneous supraparticles with composite material assembly, still the shape of the colloids has no influences, while the size and dispersity play roles for tuning the morphology of the supraparticles. From the results, we propose a way to fabricate homogeneous mixture, core/shell, and Janus core/shell structures of the supraparticles depending on the size and dispersity of the mixture colloidal dispersion. Indeed, knowledge on the effects of types of colloids would be of great importance for tailoring supraparticles.


2014 ◽  
Vol 2 (33) ◽  
pp. 6706-6722 ◽  
Author(s):  
Arik Kar ◽  
Amitava Patra

Core–shell structures of SnO2nanocrystals improve the performance of diverse applications.


Pharmaceutics ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 139
Author(s):  
Ekaterina V. Lengert ◽  
Daria B. Trushina ◽  
Mikhail Soldatov ◽  
Alexey V. Ermakov

Naturally inspired biomaterials such as calcium carbonate, produced in biological systems under specific conditions, exhibit superior properties that are difficult to reproduce in a laboratory. The emergence of microfluidic technologies provides an effective approach for the synthesis of such materials, which increases the interest of researchers in the creation and investigation of crystallization processes. Besides accurate tuning of the synthesis parameters, microfluidic technologies also enable an analysis of the process in situ with a range of methods. Understanding the mechanisms behind the microfluidic biomineralization processes could open a venue for new strategies in the development of advanced materials. In this review, we summarize recent advances in microfluidic synthesis and analysis of CaCO3-based bioinspired nano- and microparticles as well as core-shell structures on its basis. Particular attention is given to the application of calcium carbonate particles for drug delivery.


Micromachines ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 125 ◽  
Author(s):  
Chuanpin Chen ◽  
Wenfang Liu ◽  
Ping Jiang ◽  
Tingting Hong

Coaxial electrohydrodynamic atomization (CEHDA) presents a promising technology for preparing drug-loaded micro/nanoparticles with core-shell structures. Recently, CEHDA has attracted tremendous attention based on its specific advantages, including precise control over particle size and size distribution, reduced initial burst release and mild preparation conditions. Moreover, with different needles, CEHDA can produce a variety of drug-loaded micro/nanoparticles for drug delivery systems. In this review, we summarize recent advances in using double-layer structure, multilayer structure and multicomponent encapsulation strategies for developing micro/nanoparticles. The merits of applying multiplexed electrospray sources for high-throughput production are also highlighted.


PhotoniX ◽  
2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Yingying Wang ◽  
Shixun Dai

AbstractChalcogenide (ChG) glasses have the characteristics of a wide transparency window (over 20 μm) and high optical nonlinearity (up to 103 times greater than that of silica glasses), exhibiting great advantages over silica and other soft glasses in optical property at mid-infrared (MIR) wavelength range. These make them excellent candidates for MIR supercontinuum (SC) generation. Over the past decades, great progress has been made in MIR SC generation based on ChG fibers in terms of spectral extension and output power improvement. In this paper, we introduce briefly the properties of ChG glasses and fibers including transmission, nonlinearity, and dispersion, etc. Recent progress in MIR SC generation based on ChG fibers is reviewed from the perspective of pump schemes. We also present novel ChG fibers such as As-free, Te-based, and chalcohalide fibers, which have been explored and employed as nonlinear fibers to achieve broadband SC generation. Moreover, the potential applications of MIR SC sources based on ChG fibers are discussed.


The Analyst ◽  
2015 ◽  
Vol 140 (5) ◽  
pp. 1510-1515 ◽  
Author(s):  
J. F. Cahill ◽  
H. Fei ◽  
S. M. Cohen ◽  
K. A. Prather

Materials with core–shell structures have distinct properties that lend themselves to a variety of potential applications.


2017 ◽  
Vol 59 (5) ◽  
pp. 610-615
Author(s):  
Hui Song ◽  
Tingxi Li ◽  
Yongqin Han ◽  
Guoqiang Cao ◽  
Yanmin Wang ◽  
...  

2020 ◽  
Vol 13 (10) ◽  
pp. 319
Author(s):  
Eugenia Romano ◽  
Paolo Antonio Netti ◽  
Enza Torino

Exosomes are phospholipid-based particles endogenously produced by both normal and tumor cells. Initially identified as a pathway for shuttling cellular waste, for a long time they were thought to act as “garbage bags”, and only in the past few years have they emerged as a promising drug delivery system. In this review, we provide an overview of the knowledge about exosome architecture and biogenesis and the recent progress in isolation methods. Furthermore, we describe the mechanisms involved in both extra- and intracellular communication with a focus on glioma brain tumors. Glioma is considered a rare disease and is the most prominent aggressive brain malignancy. How exosomes target glial tumoral cells in vivo remains largely unknown. However, they are able to influence numerous physio-pathological aspects. Here, we discuss the role they play in this heterogeneous and complex microenvironment and their potential applications.


RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6548-6558 ◽  
Author(s):  
Yang Chen ◽  
Ailian Chen ◽  
Jiawei Qin

Organic/inorganic composite particles with a core–shell structure exhibit potential applications in chemical mechanical polishing/planarization (CMP) for mechanically challenging materials (copper and low-k dielectrics etc.).


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