CHEMICAL SENSOR MATERIALS BASED ON CLATHRATES - INCLUSION-COMPOUNDS OF 2,2'-BIS(9-HYDROXY-9-FLUORENYL) BIPHENYL WITH ORGANIC-SOLVENT VAPORSFOR COATING APPLICATIONS IN MASS SENSITIVE DEVICES
K. Buhlmann et al., CHEMICAL SENSOR MATERIALS BASED ON CLATHRATES - INCLUSION-COMPOUNDS OF 2,2'-BIS(9-HYDROXY-9-FLUORENYL) BIPHENYL WITH ORGANIC-SOLVENT VAPORSFOR COATING APPLICATIONS IN MASS SENSITIVE DEVICES, Fresenius' journal of analytical chemistry, 348(8-9), 1994, pp. 549-552
The solid host compound 2,2'-bis (9-hydroxy-9-fluorenyl)biphenyl 1 enc
lathrates organic solvent vapours such as acetone, methanol and 1-buta
nol to give stoichiometric inclusion complexes. Using differential sca
nning calorimetry (DSC), desorption enthalpies were estimated to 10-20
kJ/mol, indicating weak host-guest interactions. Clathrate formations
with acetone and methanol are reversible and reproducible, and show a
dependence of the mass increase on the solvent concentration in a gas
flow. The application of host compound 1 as receptor layer can be imp
ortant for the future development of mass sensors for the determinatio
n of organic solvent vapours.