title: A molecular thermometer for nanoparticles for optical hyperthermia.
abstract: We developed an all-optical method to measure the temperature on gold (nanorods and nanostars) and magnetite nanoparticles under near-infrared and radiofrequency excitation by monitoring the excited state lifetime of Rhodamine B that lies within =/~20 nm from the nanoparticle surface. We reached high temperature sensitivity (0.029 ± 0.001 ns/°C) and low uncertainty (±0.3 °C). Gold nanostars are =/~3 and =/~100 times more efficient than gold nanorods and magnetite nanoparticles in inducing localized hyperthermia.
authors.affiliation: Physics Department, Università degli Studi di Milano Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Freddi
authors.forename: Laura
authors.initials: L
authors.lastname: Sironi
authors.forename: Rocco
authors.initials: R
authors.lastname: D'Antuono
authors.forename: Diego
authors.initials: D
authors.lastname: Morone
authors.forename: Alice
authors.initials: A
authors.lastname: Donà
authors.forename: Elisa
authors.initials: E
authors.lastname: Cabrini
authors.forename: Laura
authors.initials: L
authors.lastname: D'Alfonso
authors.forename: Maddalena
authors.initials: M
authors.lastname: Collini
authors.forename: Piersandro
authors.initials: P
authors.lastname: Pallavicini
authors.forename: Giovanni
authors.initials: G
authors.lastname: Baldi
authors.forename: Daniela
authors.initials: D
authors.lastname: Maggioni
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Chirico
mesh_terms: D006046:Gold / Q000737:chemistry*; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D055620:Optical Phenomena; D010316:Particle Size; D013499:Surface Properties; D013696:Temperature
chemical_list: D058185:Magnetite Nanoparticles; D006046:Gold