Tuning the growth, crosslinking, and gating effect of disulfide-containing PGMAs on the surfaces of mesoporous silica nanoparticles for redox/pH dual-controlled cargo release

2016 ◽  
Vol 7 (12) ◽  
pp. 2171-2179 ◽  
Author(s):  
Hang Zhou ◽  
Xin Wang ◽  
Jun Tang ◽  
Ying-Wei Yang

PGMA brushes grown on MSN surfaces via SI-ATRP could be cross-linked by cystamine or through a KI/H2O2 (30%) assisted disulfide bond exchange to realize gating effects for redox/pH dual-controlled cargo release.

RSC Advances ◽  
2015 ◽  
Vol 5 (73) ◽  
pp. 59576-59582 ◽  
Author(s):  
Huameng Gong ◽  
Zhifei Xie ◽  
Mingxing Liu ◽  
Hongda Zhu ◽  
Honghao Sun

In this paper, redox-sensitive mesoporous silica nanoparticles (MSNs–SS–PEG) were successfully synthesized using silica nanoparticles modified with a thiol group (MSNs–SH) and thiol-functionalized methoxy polyethylene glycol (MeOPEG–SH).


RSC Advances ◽  
2018 ◽  
Vol 8 (37) ◽  
pp. 20862-20871 ◽  
Author(s):  
Chao Chen ◽  
Wen Sun ◽  
Wenji Yao ◽  
Yibing Wang ◽  
Hanjie Ying ◽  
...  

A smart pH/GSH dual-responsive drug delivery system by using DAD as a “gatekeeper polymer” to end-cap MSNs via pH-sensitive Schiff bond, whereas DAD polymer shell were cross-linked by GSH-sensitive disulfide bond.


2020 ◽  
Vol 20 (11) ◽  
pp. 1001-1016
Author(s):  
Sandra Ramírez-Rave ◽  
María Josefa Bernad-Bernad ◽  
Jesús Gracia-Mora ◽  
Anatoly K. Yatsimirsky

Hybrid materials based on Mesoporous Silica Nanoparticles (MSN) have attracted plentiful attention due to the versatility of their chemistry, and the field of Drug Delivery Systems (DDS) is not an exception. MSN present desirable biocompatibility, high surface area values, and a well-studied surface reactivity for tailoring a vast diversity of chemical moieties. Particularly important for DDS applications is the use of external stimuli for drug release. In this context, light is an exceptional alternative due to its high degree of spatiotemporal precision and non-invasive character, and a large number of promising DDS based on photoswitchable properties of azobenzenes have been recently reported. This review covers the recent advances in design of DDS using light as an external stimulus mostly based on literature published within last years with an emphasis on usually overlooked underlying chemistry, photophysical properties, and supramolecular complexation of azobenzenes.


2021 ◽  
Vol 119 ◽  
pp. 111619
Author(s):  
Paul Jänicke ◽  
Claudia Lennicke ◽  
Annette Meister ◽  
Barbara Seliger ◽  
Ludger A. Wessjohann ◽  
...  

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