Surface-Enhanced Raman Scattering based on Thermosensitive Poly(N-isopropylacrylamide) Modified Nano-Gold

Authors: Nguyễn Thị Tuyết Mai*, Nguyễn Lê Huy, Claire Mangeney, Nordin Felidj


In the study, we developed an attractive hybrid plasmonic platform based on thermosensitive poly(N- Isopropylacrylamide) (pNIPAM) coated lithographic gold nanoparticles for Surface Enhanced Raman Scattering (SERS). Gold nanoparticles with remarkable surface plasmon resonance properties demonstrate a very high SERS active. The pNIPAM brushes are able to trap efficiently hydrophobic or hydrophilic analytes close to the gold nanoparticles surface by changing the external temperature leading to increasing strongly their Raman scattering signal. The hybrid nanostructure thus can be used as an ultrasensitive SERS sensing platform. Interestingly, the thermosensitive property of the pNIPAM allows tuning the activity of SERS of the hybrid nanoplasmonic structures. This work demonstrates a promising of hybrid plasmonic substrates for ultrasensitive sensing for pollutants monitoring the SERS enhancement.


SERS, plasmonic, gold nanoparticles, pNIPAM, thermosensitive
Pages : 63-67

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