화학공학소재연구정보센터
Applied Surface Science, Vol.301, 544-550, 2014
A novel method for the fabrication of ATPES silanized SPR sensor chips: Exclusion of Cr or Ti intermediate layers and optimization of optical/adherence properties
The present work discloses a protocol for the production of APTES treated gold films on glass substrates without intermediate chromium or titanium layers with high adherence of the coated gold layer to the glass substrate and suitable optical properties for using as a SPR sensor chip. A thorough optimization study of the APTES coating of nano-gold layers on glass procedure has been performed for the first time. Different media (liquid water, liquid toluene, vapor phase iso-propyl alcohol and vapor phase APTES) and thermal treatment methods have been employed. The final products have been analyzed using ATR-FTIR, SPR, AFM and contact angle analysis methods. The adhesive property of the final films has been assessed using two test methods: pull off test and stability test in boiling water. At the end, the coating protocol resulting in the best adhesion property and SPR response is presented as the optimal method. (C) 2014 Elsevier B.V. All rights reserved.