منابع مشابه
Photoresponsive gelators.
Low molecular weight gels can be responsive to a range of external stimuli. The use of light as an external stimulus to modify gels is of particular interest for a number of reasons. Light is a non-invasive trigger. For example, using light it is possible to spatially target a specific area of the gel leading to patterned gel surfaces. Here, we review the different approaches that have been use...
متن کاملPhotoresponsive Cellulose Nanocrystals
In this communication a method for the creation of fluorescent cellulose nanoparticles using click chemistry and subsequent photodimerization of the installed side‐ chains is demonstrated. In the first step, the primary hydroxyl groups on the surface of the CNCs were converted to carboxylic acids by using TEMPO‐mediated hypohalite oxidation. The alkyne groups, essent...
متن کاملPhotoresponsive porous organosilicas*
Novel structured functional hybrid materials can be obtained by incorporating photoresponsive organic components into the silicate walls of periodic mesoporous silicates. Two such materials are described, containing either viologens or stilbene analogs. Thermal or photochemical activation of viologen units generates the corresponding radical cations, whose lifetime can vary from months to milli...
متن کاملPhotoresponsive liposomal nanohybrid cerasomes.
An innovative photoresponsive cerasome is fabricated by sol-gel process in combination of self-assembly technique from a molecularly designed organoalkoxysilylated lipid containing an azobenzene unit, which is able to operate as a "valve" with an "on-off" function under specific stimuli to control the release of loaded guest molecules from the liposomal membrane.
متن کاملPhotoresponsive polymer-enzyme switches.
The ability to photoregulate enzyme activities could provide important new opportunities for development of diagnostic assays, sequential bioprocessing, and lab assays in both traditional and microfluidic formats. We show here that the photoinduced changes in the size and hydration of a "smart" polymer chain coil can be used to regulate substrate access and enzyme activity when conjugated to th...
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ژورنال
عنوان ژورنال: TRENDS IN THE SCIENCES
سال: 2009
ISSN: 1884-7080,1342-3363
DOI: 10.5363/tits.14.3_99