| |
| Thesis Name： |
An operational supramolecular nanovalve. |
| Usage： |
A nanovalve |
| Keyword： |
nanovalve |
| Remarks： |
Nanovalves were created by tethering pseudorotaxanes as gates at the entrances of ca. 2 nm cylindrical pores in mesostructured silica.
The pseudorotaxane gatekeeper comprises a gatepost (a tethered 1,5-dioxynapthalene (DNP)-containing derivative (DNPD)) and a gate (cyclobis-(paraquat-p-phenylene) , CBPQT4+) that recognises DNP units. Tris(2,2'-phenylpyridyl)iridium(III), Ir(ppy)3, that fluoresces at 506 nm was used as the trapped molecule.
Sol-gel technology was used to prepare films that were derivatized with the DNPD gateposts. The pores of the mesostructure were diffusion-filled with Ir(ppy)3. The gate was closed by immersing the film in an aqueous solution of CBPQT•4Cl.
The system was placed in a solution of PhMe/EtOH before adding an external reducing agent (NaCNBH3) to open the valve and release the luminescent molecules. |
| Original file： |
No File
|
|
Promulgator Detail |
| Full name: |
hichem |
| Country: |
CN |
| City: |
|
| Company Name: |
hichem |
| Homepage: |
http://www.teloon.com |
| E-mail: |
reply |
| Phone: |
86-411-82819585 |
| Fax: |
86-411-82819612 |
| Company Address: |
Renming Road, Dalian city, Lianning pro,china |
| Zip/Postal Code: |
|
| Introduction: |
|
|
|
|
|
