Film Structure-Induced Resonant Oscillation Changes in a Poly Acrylic Acid Modified Quartz Crystal Sensor

A poly acrylic acid (PAA) film has been fabricated on a quartz crystal microbalance to study the dynamic property changes induced by different pH values. The experiment has been performed by a two-step. First, using the self-assembly procedure, the gold surface of quartz crystal was chemically modified to allow the graft copolymerization with PAA. Secondly, the resonant frequency response of the PAA-modified QCM was investigated by varying the pH values. The result shows an interesting oscillation property change nearby pH 5.5, and a possible mechanism for the change is proposed considering the oscillation properties of quartz crystal and the physical properties of PAA. Finally, a polymer film complex of PAA/collagen was also used to confirm the proposed mechanism.

Park, Jin Young (författare)
Kim, Seung Jin (författare)
Chang, Sang Mok (författare)
Kim, In Ho (författare)
Hilborn, JönsUppsala universitet,Institutionen för materialkemi(Swepub:uu)johil255 (författare)
Kim, Jong Min (författare)
Uppsala universitetInstitutionen för materialkemi (creator_code:org_t)

Ingår i:Molecular Crystals and Liquid Crystals: Informa UK Limited492, s. 221-2281542-14061563-5287

Av författaren/redakt...: Kim, Woo Sik; Park, Jin Young; Kim, Seung Jin; Chang, Sang Mok; Kim, In Ho; Hilborn, Jöns; visa fler...; Kim, Jong Min; visa färre...

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