TY - JOUR
T1 - Piezoelectric quartz crystal detection of benzene vapour using chemically modified cyclodextrins
AU - Lai, Colin S I
AU - Moody, Gwilym J.
AU - Thomas, J. D Ronald
AU - Mulligan, David C.
AU - Stoddart, J. Fraser
AU - Zarzycki, Ryszard
PY - 1988
Y1 - 1988
N2 - Three chemically modified cyclodextrins have been prepared, characterised by n.m.r. spectroscopy, and studied for their possible rôle as piezoelectric crystal coating detectors towards benzene vapour. 2,6-Per-O-methyl-β-cyclodextrin 3-perbenzoate (DMβCD-B7) is not recommended. 2,6-Per-O-(t-butyl-dimethylsilyl)-α-cyclodextrin (DSαCD) was found to be the best for the ca. 0.08 - ca. 400 mg dm -3 range of benzene vapour in air. 2,6-Per-O-allyl-α- cyclodextrin (DAαCD) is a possible alternative. Both detector systems function for > 20 days. The detectors are selective towards benzene vapour over methane, propane, butane, pentane, ethyne, ammonia, nitrobenzene, and toluene. Toluene gives rise to the most serious interference. For the preferred DSαCD sensor, toluene only gives <20% of the decrease in frequency observed with the corresponding amount of benzene. However, the interference is slightly greater for the DAαCD sensor.
AB - Three chemically modified cyclodextrins have been prepared, characterised by n.m.r. spectroscopy, and studied for their possible rôle as piezoelectric crystal coating detectors towards benzene vapour. 2,6-Per-O-methyl-β-cyclodextrin 3-perbenzoate (DMβCD-B7) is not recommended. 2,6-Per-O-(t-butyl-dimethylsilyl)-α-cyclodextrin (DSαCD) was found to be the best for the ca. 0.08 - ca. 400 mg dm -3 range of benzene vapour in air. 2,6-Per-O-allyl-α- cyclodextrin (DAαCD) is a possible alternative. Both detector systems function for > 20 days. The detectors are selective towards benzene vapour over methane, propane, butane, pentane, ethyne, ammonia, nitrobenzene, and toluene. Toluene gives rise to the most serious interference. For the preferred DSαCD sensor, toluene only gives <20% of the decrease in frequency observed with the corresponding amount of benzene. However, the interference is slightly greater for the DAαCD sensor.
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U2 - 10.1039/P29880000319
DO - 10.1039/P29880000319
M3 - Article
AN - SCOPUS:37049077797
SN - 1472-779X
SP - 319
EP - 324
JO - Journal of the Chemical Society, Perkin Transactions 2
JF - Journal of the Chemical Society, Perkin Transactions 2
IS - 3
ER -