Patent ID: 6478912
Filing Date: 2002-11-12
Classification: C09J,C23C,C23F,Y10T

Abstract:
A ligand layer on a surface of a metal, the ligand layer being capable of being reversibly switched between adhesion and deadhesion, the ligand layer comprising substituted pyridine dimers and/or pyridine trimers which are selected from the group consisting of: R1 through R6 being equal or different and being selected from the group consisting of â€”Râ€”CH(O)CH2, OH, â€”Oâ€”R, NR2, NHR, NH2, CO2H, CO2R, R and H, R being selected from the group consisting of alkyl and aryl residues, not all residues R1 through R6 being hydrogen atoms at a same time; R7 being selected from the group consisting of â€”Râ€”CH(O)CH2, OH, â€”Oâ€”R, NR2, NHR, NH2, CO2H, CO2R, CONHR, R and H, R being selected from the group consisting of alkyl and aryl residues; Y being selected from the group consisting of silicon, carbon, nitrogen, phosphorus and oxygen atoms; and X being an oxygen, sulfur or phosphorus atom, and n having a value of 0 or 1.