Dendritic Silica Particles with Center-Radial Pore Channels: Promising Platforms for Catalysis and Biomedical Applications

Abstract

Dendritic silica micro-/nanoparticles with center-radial pore structures, a kind of newly created porous material, have attracted considerable attention owing to their unique open three-dimensional dendritic superstructures with large pore channels and highly accessible internal surface areas compared with conventional mesoporous silica nanoparticles (MSNs). They are very promising platforms for a variety of applications in catalysis and nanomedicine. In this review, their unique structural characteristics and properties are first analyzed, then novel and interesting synthesis methods associated with the possible formation mechanisms are summarized to provide material scientists some inspiration for the preparation of this kind of dendritic particles. Subsequently, a few examples of interesting applications are presented, mainly in catalysis, biomedicine, and other important fields such as for sacrificial templates and functional coatings. The review is concluded with an outlook on the prospects and challenges in terms of their controlled synthesis and potential applications.

Large Pore‐Sized Hollow Mesoporous Organosilica for Redox‐Responsive Gene Delivery and Synergistic Cancer Chemotherapy

“…[ 15 ] The 29 Si MAS NMR spectra of HPMOs and HMONs exhibit both Q and T sites, but the signal number and intensity are signifi cantly different from each other. The resonances at −102 and −111 ppm are assigned to the Q 3 (Si(OSi) 3 We have successfully demonstrated herein that the chemicalbond stability difference is a key factor for fabricating HMONs with large mesopores from HPMOs. In addition, large poresized HMONs could be directly obtained from SiO 2 @PMOs rather than from HPMOs under the hydrothermal condition ( Figure S3a-d, Supporting Information).…”

“…The superiority of large pore-sized HMSNs over small pore-sized HMSNs offers a promising strategy for facilitating the penetration and mass transfer of bulky drug molecules, proteins, and nucleic acids. [ 3 ] Very recently, two approaches have been developed for the pore expansion of mesoporous silica materials. One is to employ suitable organic molecules as auxiliary templating agent [ 4 ] and the other is to utilize amphiphilic copolymers or surfactants with high molecular weight.…”

Coating and functionalization of high density ion track structures by atomic layer deposition

“…Due to the crossing tracks, the structure is still rigid and could be used as a highly porous substrate in, for instance, cell growth studies or catalysis. 10 Figure. …”

“…Porous materials with precisely controlled properties, such as pore size and diameter, have several applications in, for instance, filtration [1], gas sensing [2,3], catalysis [4], photocatalysis [5,6], solar cells [7], adsorption [8,9], and biomedical research [10]. Microchannel plates (MCPs) are special member of these materials, in which a porous membrane is composed of parallelly aligned or crossing tubes.…”

Monodispersed mesoporous silica nanospheres based on pyridinium ionic liquids

“…Dendritic MSNs is unique due to its open threedimensional (3D) dendritic structure with large pore channels and easily accessible compared to typical MSNs. It also garnered a lot attention in biomedical field due to the success of other organic dendrimer-drug conjugates entering the clinical test [25]. However, all the previous researches used the common type template which is quartenary ammonium salts and currently, there are fewer researches on alternative templates in developing monodispersed MSNs.…”