Patent ID: 7867552
Filing Date: 2011-01-11
Classification: G01N

Abstract:
1. A method providing sensing monolayers for hydrogen sulphide detection, said method comprising: synthesizing a sensing monolayer based on at least one chemical compound, wherein said at least one chemical compound comprises thiacalix[n]arenas, mercapto halides, mercapto alcohols and chloromethylated thiacalix[n]arenas; directly depositing said sensing monolayer at the surface of a piezoelectric quartz substrate in a covalent bonded manner by means of direct printing process; and chemically activating said piezoelectric quartz substrate in a basic medium and/or in an acid medium before the immobilization of said sensing monolayer in order to increase the population of OH groups, wherein said sensing monolayer and said piezoelectric quartz substrate are associated with at least one SAW/BAW device.