TY - GEN
T1 - Ion-selective nanoplasmonic optical sensor
AU - Kang, Taewook
AU - Choi, Yeonho
AU - Choi, Dukhyun
AU - Lee, Eunice
AU - Lee, Luke P.
N1 - Funding Information:
This work was supported by a grant (code #: 05K1501-02810) from ‘Center for Nanostructured Materials Technology’ under ‘21st Century Frontier R&D Programs’ of the Ministry of Science and Technology, Korea.
Publisher Copyright:
© 2007 CBMS.
PY - 2007
Y1 - 2007
N2 - In this paper, we demonstrate a label-free ion-selective optical sensor for metal ion. This sensing mechanism is based on (1) selective formation of metal-ligand complex on the surface of nanoplasmonic probes and (2) selective plasmonic resonance energy transfer (PRET) between conjugated metal-ligand complex and gold nanoplasmonic probes (GNPs). We used functionalized GNP with ethylenediamine ligands in order to demonstrate high selectivity and sensitivity toward Cu2+. Due to the selective energy transfer from GNP to dd transition of the Cu2+ complex, the scattering spectrum of GNP changes quantitatively down to 1 nM of Cu2+. Moreover, this Cu2+ nanoplasmonic senor has selectivity over Na+, Ca2+, K+, and Mg2+
AB - In this paper, we demonstrate a label-free ion-selective optical sensor for metal ion. This sensing mechanism is based on (1) selective formation of metal-ligand complex on the surface of nanoplasmonic probes and (2) selective plasmonic resonance energy transfer (PRET) between conjugated metal-ligand complex and gold nanoplasmonic probes (GNPs). We used functionalized GNP with ethylenediamine ligands in order to demonstrate high selectivity and sensitivity toward Cu2+. Due to the selective energy transfer from GNP to dd transition of the Cu2+ complex, the scattering spectrum of GNP changes quantitatively down to 1 nM of Cu2+. Moreover, this Cu2+ nanoplasmonic senor has selectivity over Na+, Ca2+, K+, and Mg2+
KW - Gold Nanoparticle
KW - Metal-Ligand Complex
KW - Plasmonic Resonance Energy Transfer
KW - Rayleigh Scattering
UR - http://www.scopus.com/inward/record.url?scp=85088677932&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85088677932
T3 - Proceedings of the 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007
SP - 464
EP - 466
BT - Proceedings of the 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007
A2 - Viovy, Jean-Louis
A2 - Tabeling, Patrick
A2 - Descroix, Stephanie
A2 - Malaquin, Laurent
PB - Chemical and Biological Microsystems Society
T2 - 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007
Y2 - 7 October 2007 through 11 October 2007
ER -