Investigation of Electronic Communication and Guest Inclusion Using Photoluminescent Macrocyclic Receptors with Ru(II) Centers and Ph(2)P-C identical withC-C identical withC-PPh(2) Spacers This work was supported by the US National Science Foundation CAREER Award (CHE-9733546).

Abstract

An enhanced photoluminescence is observed upon addition of organic guests to the trimeric macrocycle (see picture; tpy=2,2′:6′,2″-terpyridine). The use of a short alkyne bridge has enabled the rigid trimer and the smaller dimer to be prepared with controllable cavity sizes. A better redox communication between the Ru centers in the dimer is also observed.