Naslov
Molecular design and host-guest complexation properties of supramolecular bis-porphyrin “ molecular tweezers“

Autori
Margetić, Davor ; Dong, Zemin ; Merican, Zul ; Officer, David ; Hesheng, Tom ; Warrener, Ron N. ; Douglas N. Butler, Doug N. ; Gunter, Max J.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
3rd International Symposium on Macro- and Supramolecular Architectures and Materials (MAM06): Practical Nano-Chemistry and Novel Approaches

Mjesto i datum
Tokyo, Japan, 28.05.2006. - 31.05.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
supramolecular chemistry

Sažetak
An AM1 computational study of a series of space separated bis-porphyrin “ molecular tweezers” 1 aimed for the preparation of light-harvesting devices has been conducted. It was found that bis-porphyrin systems possessing polycyclic spacers are significantly less rigid than previously thought.[3, 4] Variation of the metal-metal separation distance does not cause a significant energy change thus enabling these molecules to easily adjust to the optimal bonding distance required for complexation of various pyridyl ligands. Binding energies for a series of guests were estimated and indicated that the preferred complexation occurs within the cavity of these molecular tweezers (selective binding). With a help of molecular design, bis-porphyrin, having a more flexible framework incorporating two “ molecular hinges” was synthetised. Its complexation with several bis-pyridyl guests was studied by NMR and UV spectroscopy

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA