title: Surface-confined heterometallic triads on the basis of terpyridyl complexes and design of molecular logic gates.
abstract: Surface-confined heterometallic molecular triads (SURHMTs) were fabricated on SiOx-based solid substrates using optically rich and redox-active Fe-, Os-, and Ru-based terpyridyl complexes as metalloligands and Cu(2+) ions as linkers. Optical and electrochemical studies reveal efficient electronic intramolecular communication in these assemblies. The UV-vis spectra of the triads exhibit a superposition of the metal-to-ligand charge-transfer bands of individual complexes, providing a significant enlargement of the optical window, useful for application. Similarly, cyclic voltammograms of SURHMT layers show a variety of redox peaks corresponding to individual complexes as well as multi-redox states at a low potential. Interaction of a representative SURHMT assembly with redox-active NOBF4 was investigated and used as a basis for configuring molecular logic gates.
authors: †Department of Chemistry, University of Delhi, Delhi 110007, India.|‡Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel.
authors: Prakash Chandra
authors: PC
authors: Mondal
authors: †Department of Chemistry, University of Delhi, Delhi 110007, India.
authors: Vikram
authors: V
authors: Singh
authors: §Applied Physical Chemistry, Heidelberg University, Heidelberg 69120, Germany.
authors: Yekkoni Lakshmanan
authors: YL
authors: Jeyachandran
authors: §Applied Physical Chemistry, Heidelberg University, Heidelberg 69120, Germany.
authors: Michael
authors: M
authors: Zharnikov
keywords: layer-by-layer; logic gates; metallo-ligands; molecular triads; redox states