Nanoshells are a novel class of optically tunable nanoparticles that consist of alternating dielectric and metal layers. They can potentially be used as contrast agents for multi-label molecular imaging, provided that the shell thicknesses are tuned to specific ratios. Sub-100 nm multi-layer nanoshells can potentially have improved tissue penetration, generate a strong surface plasmon resonance...

A synthetic method to prepare a core-shell-structured Fe3O4@SiO2 as a safe nanovehicle for tumor cell targeting has been developed. Superparamagnetic iron oxide is encapsulated inside nonporous silica as the core to provide magnetic targeting. Carboxymethyl chitosan-folic acid (OCMCS-FA) synthesized through coupling folic acid (FA) with OCMCS is then covalently linked to the silica shell and re...

Femtosecond time-resolved second harmonic generation studies of the barrierless isomerization of an organic dye, malachite green (MG), have been carded out at several aqueous interfaces. A comparison of the dynamics at the air/aqueous, alkane/aqueous and silica/aqueous interfaces, indicates increased friction and increased water structure at the aqueous interfaces relative to bulk water, in sup...

Climate change mitigation requires the development of greener chemical processes. In this context, biocatalysis is a pivotal key enabling technology. The advantages include lower energy consumption levels, reduced hazardous waste production and safer possibility to carry out biocatalytic reactions under flow conditions provides additional advantage retain biocatalyst reduce costly downstream He...

Mesoporous carbon spheres (MCS) have been fabricated from structured mesoporous silica sphere using chemical vapor deposition (CVD) with ethylene as a carbon feedstock. The mesoporous carbon spheres have a high specific surface area of 666.8 m2/g and good electrochemical properties. The mechanism of formation mesoporous carbon spheres (carbon spheres) is investigated. The important thing is a s...