Journal
JOURNAL OF MATERIALS CHEMISTRY B
Volume 1, Issue 25, Pages 3159-3166Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tb20292e
Keywords
-
Categories
Funding
- NanoSensoMach ERC advanced Grant under EC program [267574]
- Minerva Center for Bio-Hybrid Complex Systems
Ask authors/readers for more resources
The photonic- and redox-triggered cyclic uptake and release of organic substrates in functionalized mesoporous SiO2 nanoparticles (NPs) is demonstrated. The mesoporous SiO2 NPs are functionalized with nitrospiropyran photoisomerizable units. Rhodamine B is encapsulated in the channels of the SiO2 NPs and trapped by the hydrophobic nitrospiropyran capping units. Photoisomerization of the capping units to the protonated nitromerocyanine groups opens the channels and releases the encapsulated dye. Similarly, modification of the SiO2 channels by chloronaphthoquinone units traps eosin Y in the channels, by means of donor-acceptor interactions. The reduction of the quinone units to the chloronaphth hydroquinone donor groups opens the channels and releases the encapsulated substrate. The novelty of the study rests on the demonstration of the reversible and cyclic photostimulated or redox-activated uptake and release of substrates from the mesoporous SiO2 NPs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available