RT Journal Article
T1 Detecting CdSe Nanomaterials with a Fluorescent Schiff Base Ligand
A1 Sanmartín Matalobos, Jesús
A1 Bermejo Barrera, Pilar
A1 Pérez-Juste, Ignacio
A1 Fondo Busto, María Matilde
A1 García Deibe, Ana María
A1 Alves-Iglesias, Yeneva
K1 CdSe
K1 Nanomaterials
K1 Quantum dots
K1 Schiff base ligand
K1 Chemosensor
K1 Fluorescence
AB We investigated the easily synthesized ligand H3L as a fluorescent chemosensor for the detection of CdSe nanoparticles (CdSe NPs) and L-cysteine-capped CdSe quantum dots (CdSe-Cys QDs) in ethanol–water samples. A drastic quenching of the fluorescence emission of H3L at 510 nm occurred, as a result of the addition of CdSe NPs and CdSe-Cys QDs. A solution of H3L (1.26 ppb) showed sensitive responses to both CdSe NPs and CdSe-Cys QDs, with limits of detection (LOD) as low as 40 and 62 ppb, respectively. Moreover, using a smartphone color recognizer application, the fluorescence intensity response of H3L-modified cellulose paper to CdSe-Cys QDs was recorded on a red channel (R), which allowed us to detect CdSe-Cys QDs with LOD = 15 ppb. Interference of some common metal nanomaterials (NMs), as well as metal ions, in the determination of CdSe NMs in solution was studied. The affinity of H3L to CdSe NPs and CdSe-Cys QDs was spectroscopically determined. Scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX), micro-X-ray fluorescence (µ-XRF), 1H-NMR, attenuated total reflection infrared spectroscopy (ATR-IR), and density functional theory (DFT) were also used to investigate the interaction of H3L with CdSe NMs
PB MDPI
YR 2022
FD 2022
LK http://hdl.handle.net/10347/32217
UL http://hdl.handle.net/10347/32217
LA eng
NO Sanmartín Matalobos, J., Bermejo Barrera, P., Pérez Juste, I., Fondo, M., García Deibe, A.M., Alves Iglesias, Y. (2022). Detecting CdSe Nanomaterials with a Fluorescent Schiff Base Ligand. "Chemosensors". Vol. 10, 394
NO This research was funded by the Ministerio de Ciencia, Innovación y Universidades(RTI2018-099222-B-I00) and Interreg Atlantic Area, Poctep (ACUINANO Project).
DS Minerva
RD 24 abr 2026