Gated supramolecular chemistry in hybrid mesoporous silica nanoarchitectures: controlled delivery and molecular transport in response to chemical, physical and biological stimuli

2015 ◽  
Vol 51 (28) ◽  
pp. 6050-6075 ◽  
Author(s):  
Sebastián Alberti ◽  
Galo J. A. A. Soler-Illia ◽  
Omar Azzaroni
Keyword(s):  
Mesoporous Silica ◽  
Mass Transport ◽  
Supramolecular Chemistry ◽  
Molecular Transport ◽  
Controlled Delivery ◽  
Feature Article ◽  
Recent Advances

This Feature Article discusses recent advances in the design of mesoporous silica nanoarchitectures that can control mass transport on command through the combination of flexible supramolecular routes.

Synthesis of Smart Mesoporous Materials

2003 ◽  
Vol 775 ◽  
Author(s):  
G.V.Rama Rao ◽  
Qiang Fu ◽  
Linnea K. Ista ◽  
Huifang Xu ◽  
S. Balamurugan ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Mesoporous Materials ◽  
Fluorescent Dyes ◽  
Thermo Gravimetric Analysis ◽  
Molecular Transport ◽  
Solute Diffusion ◽  
Gravimetric Analysis ◽  
Stimuli Responsive ◽  
Porous Network ◽  
Hybrid Mesoporous Materials

AbstractThis study details development of hybrid mesoporous materials in which molecular transport through mesopores can be precisely controlled and reversibly modulated. Mesoporous silica materials formed by surfactant templating were modified by surface initiated atom transfer radical polymerization of poly(N-isopropyl acrylamide) (PNIPAAm) a stimuli responsive polymer (SRP) within the porous network. Thermo gravimetric analysis and FTIR spectroscopy were used to confirm the presence of PNIPAAm on the silica surface. Nitrogen porosimetry, transmission electron microscopy and X-ray diffraction analyses confirmed that polymerization occurred uniformly within the porous network. Uptake and release of fluorescent dyes from the particles was monitored by spectrofluorimetry and scanning laser confocal microscopy. Results suggest that the presence of PNIPAAm, a SRP, in the porous network can be used to modulate the transport of aqueous solutes. At low temperature, (e.g., room temperature) the PNIPAAm is hydrated and extended and inhibits transport of analytes; at higher temperatures (e.g., 50°C) it is hydrophobic and is collapsed within the pore network, thus allowing solute diffusion into or out of the mesoporous silica. The transition form hydrophilic to hydrophobic state on polymer grafted mesoporous membranes was determined by contact angle measurements. This work has implications for the development of materials for the selective control of transport of molecular solutes in a variety of applications.

Recent Advances of Mesoporous Silica Based Multifunctional Nano Drug Delivery Systems

2013 ◽  
Vol 40 (10) ◽  
pp. 1014
Author(s):  
Xiao-Hong HAO ◽  
Cui-Miao ZHANG ◽  
Xiao-Long LIU ◽  
Xing-Jie LIANG ◽  
Guang JIA ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Recent Advances ◽  
Nano 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.

Stimuli-responsive organic-inorganic mesoporous silica hybrids: A comprehensive review on synthesis and recent advances

2021 ◽  
Vol 270 ◽  
pp. 115232
Author(s):  
Jerome Peter ◽  
Riyasudheen Nechikkattu ◽  
Anandhu Mohan ◽  
Anju Maria Thomas ◽  
Chang-Sik Ha
Keyword(s):  
Mesoporous Silica ◽  
Stimuli Responsive ◽  
Comprehensive Review ◽  
Recent Advances ◽  
Silica Hybrids

Tuning metal–metal interactions for cooperative small molecule activation

2021 ◽  
Author(s):  
Qiuran Wang ◽  
Sam H. Brooks ◽  
Tianchang Liu ◽  
Neil C. Tomson
Keyword(s):  
Small Molecule ◽  
Small Molecule Activation ◽  
Feature Article ◽  
Metal Interactions ◽  
Recent Advances ◽  
Metal Metal

This Feature Article describes recent advances in the design of multinucleating ligands that support small molecule activation chemistry.

N-Heterocyclic silylene in coinage metal chemistry: an account of recent advances

2021 ◽  
Author(s):  
Moushakhi Ghosh ◽  
Shabana Khan
Keyword(s):  
Exponential Growth ◽  
Coinage Metal ◽  
Feature Article ◽  
Metal Chemistry ◽  
Recent Advances ◽  
Recent Developments

This feature article intends to highlight and comprehensively summarize the recent developments in the field of silylene-coinage metal chemistry. Recent years have witnessed exponential growth in the utilization of N-heterocyclic...

Gated Mesoporous Silica Nanoparticles for the Controlled Delivery of Drugs in Cancer Cells

Langmuir ◽  
2015 ◽  
Vol 31 (12) ◽  
pp. 3753-3762 ◽  
Author(s):  
Cristina Giménez ◽  
Cristina de la Torre ◽  
Mónica Gorbe ◽  
Elena Aznar ◽  
Félix Sancenón ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Cancer Cells ◽  
Mesoporous Silica Nanoparticles ◽  
Controlled Delivery
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