Multifunctional mesoporous silica nanoparticles in poly(ethylene-co-vinyl acetate) for transparent heat retention films

2015 ◽  
Vol 53 (12) ◽  
pp. 851-859 ◽  
Author(s):  
Md Abdul Mumin ◽  
Kazi Farida Akhter ◽  
Sara Dresser ◽  
Sasha T. van Dinther ◽  
Wei Wu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Vinyl Acetate ◽  
Mesoporous Silica Nanoparticles ◽  
Poly Ethylene

scholarly journals Hybrid Mesoporous Silica Nanoparticles Grafted with 2-(tert-butylamino)ethyl Methacrylate-b-poly(ethylene Glycol) Methyl Ether Methacrylate Diblock Brushes as Drug Nanocarrier

Molecules ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 195 ◽  
Author(s):  
Abdullah M Alswieleh ◽  
Abeer M Beagan ◽  
Bayan M Alsheheri ◽  
Khalid M Alotaibi ◽  
Mansour D Alharthi ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Ethylene Glycol ◽  
Silica Nanoparticles ◽  
Methyl Ether ◽  
Diblock Copolymer ◽  
Mesoporous Silica Nanoparticles ◽  
Poly Ethylene Glycol ◽  
Ethyl Methacrylate ◽  
Poly Ethylene ◽  
Glycol Methyl Ether

This paper introduces the synthesis of well-defined 2-(tert-butylamino)ethyl methacrylate-b-poly(ethylene glycol) methyl ether methacrylate diblock copolymer, which has been grafted onto mesoporous silica nanoparticles (PTBAEMA-b-PEGMEMA-MSNs) via atom transfer radical polymerization (ATRP). The ATRP initiators were first attached to the MSN surfaces, followed by the ATRP of 2-(tert-butylamino)ethyl methacrylate (PTBAEMA). CuBr2/bipy and ascorbic acid were employed as the catalyst and reducing agent, respectively, to grow a second polymer, poly(ethylene glycol) methyl ether methacrylate (PEGMEMA). The surface structures of these fabricated nanomaterials were then analyzed using Fourier Transform Infrared (FTIR) spectroscopy. The results of Thermogravimetric Analysis (TGA) show that ATRP could provide a high surface grafting density for polymers. Dynamic Light Scattering (DLS) was conducted to investigate the pH-responsive behavior of the diblock copolymer chains on the nanoparticle surface. In addition, multifunctional pH-sensitive PTBAEMA-b-PEGMEMA-MSNs were loaded with doxycycline (Doxy) to study their capacities and long-circulation time.

Tunable stellate mesoporous silica nanoparticles for intracellular drug delivery

2015 ◽  
Vol 3 (8) ◽  
pp. 1712-1721 ◽  
Author(s):  
Lin Xiong ◽  
Xin Du ◽  
Bingyang Shi ◽  
Jingxiu Bi ◽  
Freddy Kleitz ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Label Free ◽  
Ethylene Imine ◽  
Intracellular Drug Delivery ◽  
Poly Ethylene

Tunable stellate mesoporous silica nanoparticles are functionalized with low molecular poly(ethylene imine) for efficient label-free intracellular drug delivery.

Recent Advances in Application of Azobenzenes Grafted on Mesoporous Silica Nanoparticles in Controlled Drug Delivery Systems Using Light as External Stimulus

2020 ◽  
Vol 20 (11) ◽  
pp. 1001-1016
Author(s):  
Sandra Ramírez-Rave ◽  
María Josefa Bernad-Bernad ◽  
Jesús Gracia-Mora ◽  
Anatoly K. Yatsimirsky
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Drug Delivery Systems ◽  
Mesoporous Silica Nanoparticles ◽  
High Surface ◽  
Delivery Systems ◽  
Surface Reactivity ◽  
External Stimulus ◽  
Recent Advances

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.

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