TY - JOUR
T1 - Photoluminescence of double core/shell infrared (CdSeTe)/ZnS quantum dots conjugated to Pseudo rabies virus antibodies
AU - Torchynska, T. V.
AU - Casas Espinola, J. L.
AU - Jaramillo Gómez, J. A.
AU - Douda, J.
AU - Gazarian, K.
N1 - Funding Information:
The work was partially supported by CONACYT Mexico (Project 130387 ) and by SIP-IPN, Mexico .
PY - 2013/6
Y1 - 2013/6
N2 - Double core CdSeTe/ZnS quantum dots (QDs) with emission at 800 nm (1.60 eV) have been studied by photoluminescence (PL) and Raman scattering methods in the non-conjugated state and after the conjugation to the Pseudo rabies virus (PRV) antibodies. The transformation of PL spectra, stimulated by the electric charge of antibodies, has been detected for the bioconjugated QDs. Raman scattering spectra are investigated with the aim to reveal the CdSeTe core compositions. The double core QD energy diagrams were designed that help to analyze the PL spectra and their transformation at the bioconjugation. It is revealed that the interface in double core QDs has the type II quantum well character that permits to explain the near IR optical transition (1.60 eV) in the double core QDs. It is shown that the essential transformation of PL spectra is useful for the study of QD bioconjugation with speci.c antibodies and can be a powerful technique in early medical diagnostics.
AB - Double core CdSeTe/ZnS quantum dots (QDs) with emission at 800 nm (1.60 eV) have been studied by photoluminescence (PL) and Raman scattering methods in the non-conjugated state and after the conjugation to the Pseudo rabies virus (PRV) antibodies. The transformation of PL spectra, stimulated by the electric charge of antibodies, has been detected for the bioconjugated QDs. Raman scattering spectra are investigated with the aim to reveal the CdSeTe core compositions. The double core QD energy diagrams were designed that help to analyze the PL spectra and their transformation at the bioconjugation. It is revealed that the interface in double core QDs has the type II quantum well character that permits to explain the near IR optical transition (1.60 eV) in the double core QDs. It is shown that the essential transformation of PL spectra is useful for the study of QD bioconjugation with speci.c antibodies and can be a powerful technique in early medical diagnostics.
KW - Bioconjugation
KW - Double core/shell CdSeTe/ZnS quantum dot
KW - Photoluminescence
KW - Pseudo rabies virus antibody
UR - http://www.scopus.com/inward/record.url?scp=84892547938&partnerID=8YFLogxK
U2 - 10.1016/j.physe.2013.03.022
DO - 10.1016/j.physe.2013.03.022
M3 - Artículo
SN - 1386-9477
VL - 51
SP - 55
EP - 59
JO - Physica E: Low-Dimensional Systems and Nanostructures
JF - Physica E: Low-Dimensional Systems and Nanostructures
ER -