Construction of a pH-Driven Supramolecular Nanovalve

Construction of a pH-Driven Supramolecular Nanovalve

The versatility of supramolecular chemistry has been exploited in constructing nanovalves based on mesoporous silica MCM-41 and the mutual recognition between secondary dialkylammonium ions and dibenzo[24]crown-8 (DB24C8). Naphthalene-containing dialkylammonium threads were tethered to the MCM-41, f...

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Veröffentlicht in:Organic letters 2006-07, Vol.8 (15), p.3363-3366
Hauptverfasser: Nguyen, Thoi D, Leung, Ken C.-F, Liong, Monty, Pentecost, Cari D, Stoddart, J. Fraser, Zink, Jeffrey I
Format: Artikel
Sprache:eng
Schlagworte:
Coumarins - chemistry
Crown Ethers - chemistry
Hydrogen-Ion Concentration
Models, Molecular
Molecular Structure
Nanotechnology - methods
Quaternary Ammonium Compounds - chemistry
Silicon Dioxide - chemistry
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Zusammenfassung:The versatility of supramolecular chemistry has been exploited in constructing nanovalves based on mesoporous silica MCM-41 and the mutual recognition between secondary dialkylammonium ions and dibenzo[24]crown-8 (DB24C8). Naphthalene-containing dialkylammonium threads were tethered to the MCM-41, followed by loading with coumarin 460 and capping with DB24C8. Controlled release of coumarin 460 from the pores of MCM-41 was demonstrated using different bases. The rate of release of coumarin 460 from the nanovalves depends on the size of the base.
ISSN:1523-7060
1523-7052
DOI:10.1021/ol0612509