RT Journal Article
T1 Unveiling molecular changes in water by small luminescent nanoparticles
A1 Labrador Páez, Lucía
A1 Jovanović, Dragana J.
A1 Marqués, Manuel I.
A1 Smits, Krisjanis
A1 Dolić, Slobodan D.
A1 Jaque, Francisco
A1 Stanley, Harry Eugene
A1 Dramićanin, Miroslav D.
A1 García‐Solé, José
A1 Haro‐González, Patricia
A1 Jaque, Daniel
AB Nowadays a large variety of applications are based on solid nanoparticles dispersed in liquids—so called nanofluids. The interaction between the fluid and the nanoparticles plays a decisive role in the physical properties of the nanofluid. A novel approach based on the nonradiative energy transfer between two small luminescent nanocrystals (GdVO4:Nd3+ and GdVO4:Yb3+) dispersed in water is used in this work to investigate how temperature affects both the processes of interaction between nanoparticles and the effect of the fluid on the nanoparticles. From a systematic analysis of the effect of temperature on the GdVO4:Nd3+ → GdVO4:Yb3+ interparticle energy transfer, it can be concluded that a dramatic increase in the energy transfer efficiency occurs for temperatures above 45 °C. This change is properly explained by taking into account a crossover existing in diverse water properties that occurs at about this temperature. The obtained results allow elucidation on the molecular arrangement of water molecules below and above this crossover temperature. In addition, it is observed that an energy transfer process is produced as a result of interparticle collisions that induce irreversible ion exchange between the interacting nanoparticles.
PB Wiley
YR 2017
FD 2017-06-12
LK https://hdl.handle.net/20.500.14352/116600
UL https://hdl.handle.net/20.500.14352/116600
LA eng
NO L. Labrador-Páez, D. J. Jovanović, M. I. Marqués, K. Smits, S. D. Dolić, F. Jaque, H. E. Stanley, M. D. Dramićanin, J. García-Solé, P. Haro-González, D. Jaque, Small 2017, 13, 1700968. https://doi.org/10.1002/smll.201700968
NO Ministerio de Educación y Ciencia (España)
NO Ministry of Education, Science and Technological Development (Republic of Serbia)
NO Ministerio de Economía y Competitividad (España)
NO Ministry of Education and Science (Republic of Serbia)
DS Docta Complutense
RD 6 abr 2025