Dendrimer-like hybrid particles with tunable hierarchical pores

Nanoscale
Xin DuXueji Zhang

Abstract

Dendrimer-like silica particles with a center-radial dendritic framework and a synergistic hierarchical porosity have attracted much attention due to their unique open three-dimensional superstructures with high accessibility to the internal surface areas; however, the delicate regulation of the hierarchical porosity has been difficult to achieve up to now. Herein, a series of dendrimer-like amino-functionalized silica particles with tunable hierarchical pores (HPSNs-NH2) were successfully fabricated by carefully regulating and optimizing the various experimental parameters in the ethyl ether emulsion systems via a one-pot sol-gel reaction. Interestingly, the simple adjustment of the stirring rate or reaction temperature was found to be an easy and effective route to achieve the controllable regulation towards center-radial large pore sizes from ca. 37-267 (148 ± 45) nm to ca. 8-119 (36 ± 21) nm for HPSNs-NH2 with particle sizes of 300-700 nm and from ca. 9-157 (52 ± 28) nm to ca. 8-105 (30 ± 16) nm for HPSNs-NH2 with particle sizes of 100-320 nm. To the best of our knowledge, this is the first successful regulation towards center-radial large pore sizes in such large ranges. The formation of HPSNs-NH2 may be attributed to the ...Continue Reading

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Citations

May 10, 2016·Chemical Reviews·Xiaojing WangYadong Yin
Apr 26, 2017·Journal of the American Chemical Society·Prasanna Lakshmi AbbarajuChengzhong Yu
Nov 10, 2020·IScience·Ranjith Kumar KankalaAi-Zheng Chen
Apr 13, 2021·ACS Applied Nano Materials·Xiaoting XueLei Ye

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