Patent ID: 7695993

Claim:
A method for preparing a matrix nanocomposite sensing film, comprising: synthesizing a matrix nanocomposite solution by incorporating at least one thiolated carbon nanotube into at least one conductive organic polymeric material, wherein said at least one thiolated carbon nanotube comprises a mercapto group and a functional group such as thioester; forming a thin gel film based on said polymeric matrix nanocomposite, by depositing said homogenous solution on a surface of a SAW/BAW device by an additive process and/or a direct printing process; and consolidating said thin gel film by thermal annealing and/or laser annealing under ambient conditions in order to obtain the stable chemical and functional H 2 S sensing thin solid film, wherein said thin sensing film interacts with the hydrogen sulphide at room temperature by means of dipole-dipole forces.