METHOD OF MAKING SENSITIVE LAYER FOR PIEZOELECTRIC QUARTZ CRYSTAL SENSOR FOR DETECTING VAPOURS OF ORGANIC SOLVENTS

摘要

FIELD: chemistry.;SUBSTANCE: invention can be used in designing and optimising metrological characteristics of piezoelectric quartz crystal sensors in analytical chemistry. The invention pertains to design of a piezoelectric quartz crystal sensor which is modified with thin (tens of nanometres) highly-reinforced calix[4]resorcinarene films for detection of vapours of organic solvents. The method involves modification of the surface of the sensor with a Langmuir-Blodgett diphilic aminomethylated calix[4]resorcinarene film, where the film contains 15 to 25 monolayers at surface pressure of 25 mN/m.;EFFECT: high reproducibility of sensor signal (±3 Hz) with short response time (10-15 sec) and long mean life.;3 tbl