polyisobutylene (PIB) is used as recognition layer that selective t o volatile organic compounds.
How to deposit polyisobutylene (PIB) on quartz substrate?
Try to have -CH=CH2 on the quartz substrate surface and then do the polymerization of isobutylene on the surface, maybe?
Depends on how you want to have it deposited, have you looked into using PIB-based surfactants like e.g. OLOA11k?
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