TY - JOUR
T1 - Swelling signals of polymer films measured by a combination of micromechanical cantilever sensor and surface plasmon resonance spectroscopy
AU - Igarashi, Shinichi
AU - Itakura, Akiko N.
AU - Toda, Masaya
AU - Kitajima, Masahiro
AU - Chu, Liqiang
AU - Chifen, Anye N.
AU - Förch, Renate
AU - Berger, Rüdiger
N1 - Funding Information:
We wish to thank Z. Zhang (MPIP) for plasma polymerization. In particular, F. Saurenbach, J. Chrost and H. Fuss (Surface Imaging Systems GmbH, Germany) are acknowledged for loan and support of the Accantix MCS equipment. We also thank M. Vaupel and A. Hädrich (Nanofilm Technologie GmbH, Germany) and M. Wolkenhauer (MPIP) for the support of the EP 3 imaging ellipsometer. In addition, the support from S. Moreno-Flores and H.-J. Butt (MPIP) are acknowledged. One of the authors (M.T.) is grateful to the 21st Century COE Program (G18) by Japan Society of the Promotion of Science for financial support. The research was supported by the fund of Japan Science and Technology Agency and the Max Planck Institute for Polymer Research, Germany.
PY - 2006/9/12
Y1 - 2006/9/12
N2 - Swelling of plasma-polymerized allylamine (PPAA) films has been investigated by using a combination of micromechanical cantilever sensor (MCS) and surface plasmon resonance (SPR) spectroscopy. The bending responses of the polymer-coated MCS were compared with simultaneously measured reflectivity changes recorded by SPR for both, highly and low crosslinked plasma-polymerized films in N2 atmospheres with different humidity. Signals attributed to reversible swelling for both plasma polymers were obtained. With increasing the humidity, the thickness increase of a highly crosslinked film was lower than that of a low crosslinked film. In contrast, the MCS coated with a highly crosslinked film exhibited a larger deflection. This demonstrates that a plasma-polymerized allylamine film of higher crosslink density can transduce more efficiently the swelling to the MCS bending than a film of lower crosslink density under identical environmental conditions.
AB - Swelling of plasma-polymerized allylamine (PPAA) films has been investigated by using a combination of micromechanical cantilever sensor (MCS) and surface plasmon resonance (SPR) spectroscopy. The bending responses of the polymer-coated MCS were compared with simultaneously measured reflectivity changes recorded by SPR for both, highly and low crosslinked plasma-polymerized films in N2 atmospheres with different humidity. Signals attributed to reversible swelling for both plasma polymers were obtained. With increasing the humidity, the thickness increase of a highly crosslinked film was lower than that of a low crosslinked film. In contrast, the MCS coated with a highly crosslinked film exhibited a larger deflection. This demonstrates that a plasma-polymerized allylamine film of higher crosslink density can transduce more efficiently the swelling to the MCS bending than a film of lower crosslink density under identical environmental conditions.
KW - Humidity
KW - Micromechanical cantilever sensor
KW - Plasma-polymerized film
KW - Surface plasmon resonance spectroscopy
KW - Swelling of thin film
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U2 - 10.1016/j.snb.2005.11.001
DO - 10.1016/j.snb.2005.11.001
M3 - Article
AN - SCOPUS:33745727660
VL - 117
SP - 43
EP - 49
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
SN - 0925-4005
IS - 1
ER -