Journal
NANOSCALE
Volume 4, Issue 23, Pages 7569-7574Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2nr32170j
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Funding
- US Public Health Service Grants [RO1 CA 133697]
- US DOD DTRA [1-08-1-0041]
- National Science Foundation (NSF) [CHE 0809384, CHE 1048804]
- National Center for Research Resources [S10RR024605]
- World Class University (WCU) Program in Korea [R-31-2008-000-10055-0]
- NATIONAL CANCER INSTITUTE [R01CA133697] Funding Source: NIH RePORTER
- NATIONAL CENTER FOR RESEARCH RESOURCES [S10RR024605] Funding Source: NIH RePORTER
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pH-responsive megagates have been fabricated around mesoporous silica material SBA-15 in order to mechanize the mesopores. These megagates remain closed in neutral conditions, but open at pH 5. The capping components of the megagates were designed to be capable of controlling pores up to 6.5 nm in diameter. Selectivity of payloads with different sizes can be achieved through the use of different capping components. The operation of the megagates was demonstrated by time-resolved fluorescence spectroscopy which is capable of monitoring the release of both the payload and the cap. This study opens up new possibilities in the field of controllable release.
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