NOVEL COORDINATION-COMPLEXES OF TETRATHIAFULVALENE DERIVATIVES

We have been investigating the use of tetrathiafulvalene tetrathiolate (1) as a ligand for a variety of new tetrathiafulvalene based coordin ation compounds (2). In the generation of 1, we have found that dithio lates and trithiolates are formed by the incomplete metallation of TTF . Herein is presented a method for the clean generation of 1, the synt hesis of a Pt(II) complex and a Ni(II) complex of 1, and the results f rom the use of 1 as a difunctional bridging ligand in the synthesis of self-assembled CdSe nanocrystalline semiconductor (quantum dot) netwo rks. The resultant TTFS4-quantum dot networks show greatly enhanced lu minescence (a 50-fold increase) over the typical butanethiol capped Cd Se quantum dots.