نتایج جستجو برای: mesoporous silica nanoparticles

تعداد نتایج: 144411  

Journal: :Chemical communications 2010
Haijiao Zhang Zhiyong Li Panpan Xu Ruofei Wu Zheng Jiao

Chrysanthemum-like mesoporous silica nanoparticles (MSNs) with large surface areas were successfully synthesized in the presence of ethyl ether by a facile two-step method under mild conditions. Pyrene was chosen to evaluate their drug loading and controlled release properties. The results showed that prepared MSNs exhibited excellent release rate.

Journal: :Chemical communications 2009
Lingzhi Wang Juying Lei Jinlong Zhang

Bright and colourful nanocomposites are easily fabricated by doping and fixing one or two kinds of oligosilicate fluorescent dots encapsulated with dye molecules into the pore channels of mesoporous silica nanoparticles, which can engender abundant fluorescent signals with a single excitation wavelength.

Journal: :Chemical communications 2015
Dongdong Li Yuping Zhang Zhiying Fan Jihong Yu

Mesoporous silica nanoparticles functionalised with aggregation-induced emission (AIE) luminogen via a carbon-nitrogen double bond are fabricated into films by a dip-coating method. The as-made films can serve as efficient fluorescent sensors for the naked-eye detection of volatile acid gases by colour and emission changes, as well as for the detection of 2,4-dinitrotoluene vapours by fluoresce...

Journal: :Macromolecular Chemistry and Physics 2023

Front Cover: In article 2200325 by Aiguo Hu and co-workers, 20 kinds of soluble-conjugated polymeric nanoparticles are control-synthesized in palladium nanoparticles-loaded dendritic mesoporous silica nanospheres show narrow size dispersity, bright fluorescence, high processibility.

Journal: :Nano today 2013
Li Tang Jianjun Cheng

Nanomedicine, the use of nanotechnology for biomedical applications, has potential to change the landscape of the diagnosis and therapy of many diseases. In the past several decades, the advancement in nanotechnology and material science has resulted in a large number of organic and inorganic nanomedicine platforms. Silica nanoparticles (NPs), which exhibit many unique properties, offer a promi...

Journal: :Nanoscale 2013
Lee J Durndell Christopher M A Parlett Nicole S Hondow Karen Wilson Adam F Lee

The selective aerobic oxidation of cinnamyl alcohol over Pt nanoparticles has been tuned via the use of mesoporous silica supports to control their dispersion and oxidation state. High area two-dimensional SBA-15, and three-dimensional, interconnected KIT-6 silica significantly enhance Pt dispersion, and thus surface PtO2 concentration, over that achievable via commercial low surface area silic...

Journal: :Chemical communications 2011
Nikola Ž Knežević Brian G Trewyn Victor S-Y Lin

A supramolecular assembly for visible light responsive release of cargo molecules is presented. Sulforhodamine 101 was loaded inside the mesopores of mercaptopropyl-functionalized mesoporous silica nanoparticles (MP-MSN) and entrapped by mercaptopropyl-coordinated Ru(bpy)(2)(PPh(3))-moieties. Irradiation with visible light triggers the release of capping species and loaded molecules.

Journal: :Chemical communications 2012
Anal Kr Ganai Sushma Kumari Kamendra P Sharma Chakadola Panda Guruswamy Kumaraswamy Sayam Sen Gupta

We report a facile one-pot synthesis of hierarchically porous scaffolds, with independent control over nanoparticle mesoporosity and scaffold macroporosity. Our technique combines the chemistry of mesoporous silica nanoparticles with the control afforded by dynamic templating of surfactant mesophases. These materials are readily functionalizable and allow controllable spatial variation in macro...

Journal: :Chemical communications 2013
Junseok Lee Juhee Park Kaushik Singha Won Jong Kim

A photoresponsive drug releasing system based on mesoporous silica nanoparticles (MSN) was developed. A model drug was decorated on the surfaces via singlet oxygen sensitive linkers and a singlet oxygen-generating photosensitizer was loaded in the mesopores of the MSN. An on-demand drug releasing system was successfully developed by irradiation with long-wavelength light.

Journal: :Chemical communications 2015
M Kavruk O Celikbicak V C Ozalp B A Borsa F J Hernandez G Bayramoglu B Salih M Y Arica

In this study, we designed aptamer-gated nanocapsules for the specific targeting of cargo to bacteria with controlled release of antibiotics based on aptamer-receptor interactions. Aptamer-gates caused a specific decrease in minimum inhibitory concentration (MIC) values of vancomycin for Staphylococcus aureus when mesoporous silica nanoparticles (MSNs) were used for bacteria-targeted delivery.

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