Abstract: There is disclosed a semiconducting organic polymer polymerized from a 1-substituted, 3-substituted or 1,3-substituted indole monomer and a gas sensor containing this polymer as the active gas sensing element.
Type:
Grant
Filed:
September 12, 1997
Date of Patent:
March 7, 2000
Assignee:
AromaScan plc
Inventors:
Krishna Chandra Persaud, Soad Mohialdin-Khaffaf
Abstract: Described is a method of depositing multilayers of semiconducting organic polymers. The method involves polymerising one layer by exposing an oxidising agent to a vapour containing the monomer and polymerising another layer of semiconducting organic polymer electrochemically.
Abstract: A method for identifying a microorganism is described that includes abstracting gas or vapor associated with the microorganism from a detection region and flowing the same over an array of sensors of which an electrical property varies according to exposure to gases or vapors and observing the response of the sensors. An apparatus for detecting a microorganism is also disclosed having a detector means for detecting a gas or vapor associated with the microorganism which includes an array of sensors of which an electrical property varies according to exposure to the gases or vapors.
Type:
Grant
Filed:
February 28, 1997
Date of Patent:
September 15, 1998
Assignee:
Aromascan PLC
Inventors:
Peter Alfred Payne, Krishna Chandra Persaud