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QCM sensor response of various molecularly imprinted TiO2 sol-gel layers produced from titanium tetrabutoxide (TBT), titanium tetrapropoxide (TPT), and titanium tetraethoxide (TEOT) precursors, exposed to 1–400 ppm of n-butanol vapors. Inset: Relative sensor responses of MIP (molecular imprinted polymer) and NIP (non-imprinted polymer) are also shown. Reproduced from [43] with permission from Springer, 2011.
