Modular synthesis of triaroylbenzene-derived crownophanes

Design, synthesis and metal sensing studies of ether-linked bis-triazole derivatives

Ether-linked-bis-triazole derivatives have been synthesized by (CuAAC) “Click” reaction. Interaction of the compound with Hg²⁺has been demonstrated by various spectroscopic techniques which was further confirmed with computational studies.

Supramolecular Triplet Photosensitizer. Effects of the Cation Binding Mode on E−Z Isomerization of 1,2-Dichloroethylene

[reaction: see text] Effects of metal cation recognition on photosensitized E-Z isomerization of 1,2-dichloroethylene have been investigated with two types of m,p- and o,o'-podand (oligo-oxyethylene unit) benzophenones 2 and 3. With increasing cation size, the %Z ratio at the photostationary state was changed from 67 to 91% for 2 but remained almost unchanged (86-88%) for 3. These results were interpreted in terms of the variation of excited triplet energy, E(T), associated with the cation complexation of these photosensitizers 2 and 3.