Structural and photophysical properties of rare-earth complexes encapsulated into surface modified mesoporous silica nanoparticles

2014 ◽  
Vol 43 (43) ◽  
pp. 16183-16196 ◽  
Author(s):  
Chandrashekhar Malba ◽  
Umayal P. Sudhakaran ◽  
Silvia Borsacchi ◽  
Marco Geppi ◽  
Francesco Enrichi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Photophysical Properties ◽  
Rare Earth Complexes ◽  
Surface Modified

scholarly journals Synthesis and Physicochemical Characterization of MesoporousSiO2Nanoparticles

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Dharani Das ◽  
Yong Yang ◽  
Julie S. O’Brien ◽  
Dalibor Breznan ◽  
Surendra Nimesh ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Physicochemical Characterization ◽  
Organic Content ◽  
Narrow Particle Size Distribution ◽  
Surface Functionality ◽  
Wide Range ◽  
Surface Modified

There exists a knowledge gap in understanding potential toxicity of mesoporous silica nanoparticles. A critical step in assessing toxicity of these particles is to have a wide size range with different chemistries and physicochemical properties. There are several challenges when synthesizing mesoporous silica nanoparticles over a wide range of sizes including (1) nonuniform synthesis protocols using the same starting materials, (2) the low material yield in a single batch synthesis (especially for particles below 60–70 nm), and (3) morphological instability during surfactant removal process and surface modifications. In this study, we synthesized a library of mesoporous silica nanoparticles with approximate particle sizes of 25, 70, 100, 170, and 600 nm. Surfaces of the silica nanoparticles were modified with hydrophilic-CH2–(CH2)2–COOH and relatively hydrophobic-CH2–(CH2)10–COOH functional groups. All silica nanoparticles were analysed for morphology, surface functionality, surface area/pore volume, surface organic content, and dispersion characteristics in liquid media. Our analysis revealed the synthesis of a spectrum of monodisperse bare and surface modified mesoporous silica nanoparticles with a narrow particle size distribution and devoid of cocontaminants critical for toxicity studies. Complete physicochemical characterization of these synthetic mesoporous silica nanoparticles will permit systematic toxicology studies for investigation of structure-activity relationships.

SOMC@Periodic Mesoporous Silica Nanoparticles: Meerwein–Ponndorf–Verley Reduction Promoted by Immobilized Rare-Earth-Metal Alkoxides

2020 ◽  
Vol 39 (7) ◽  
pp. 1046-1058 ◽  
Author(s):  
Lorenz Bock ◽  
Xuan Tran ◽  
Yucang Liang ◽  
Markus Kramer ◽  
Cäcilia Maichle-Mössmer ◽  
...  
Keyword(s):  
Rare Earth ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Rare Earth Metal ◽  
Mesoporous Silica Nanoparticles ◽  
Earth Metal ◽  
Metal Alkoxides

Design of a versatile nanocomposite for ‘seeing’ drug release and action behavior

2015 ◽  
Vol 3 (43) ◽  
pp. 8449-8458 ◽  
Author(s):  
Yu Zhang ◽  
Tingting Shen ◽  
Xia Deng ◽  
Yufei Ma ◽  
Lina Wang ◽  
...  
Keyword(s):  
Rare Earth ◽  
Drug Release ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Real Time ◽  
Mesoporous Silica Nanoparticles ◽  
Magnetic Core ◽  
New Method ◽  
Rare Earth Complex ◽  
Real Time Monitoring

To design a new method for ‘seeing’ drug release and action behavior, we combined a rare-earth complex with a magnetic-core-coated phenyl mesoporous silica nanoparticles matrix, taking advantage of the drug coordination for real-time monitoring.

Advances in the Use of Multifunctional Mesoporous Silica Nanoparticles and Related Nanomaterials as Carriers for the Cancer Treatment

2018 ◽  
Vol 19 (2) ◽  
pp. 131-141 ◽  
Author(s):  
Chunyu Song ◽  
Xinghua Wang ◽  
Yujun Wang ◽  
Hongbo Yu ◽  
Yali Cui ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Cancer Treatment ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles

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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