Core–shell rare-earth-doped nanostructures in biomedicine

Labrador‐Páez, Lucía; Ximendes, Erving; Rodríguez‐Sevilla, Paloma; Ortgies, Dirk H.; Rocha, Uéslen; Jacinto, Carlos; Rodriguez, Emma Martín; Haro‐González, P.; Jaque, Daniel

doi:10.1039/c8nr02307g

Cited by 65 publications

(38 citation statements)

References 134 publications

(168 reference statements)

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“…[47][48][49] Although usually requiring ar ather sophisticated www.chemeurj.org detection system, this parameter allows to overcome the shortcomings related with non-ratiometric intensity-based methods (e.g.,i ntensity and concentrationv ariations, along with power fluctuationso ft he excitation source). [48][49][50] The observed trend of t (inset in Figure3A), as obtained from the fit of the decay curves ( Figure S7 in the Supporting Information), is similar to the one discussed for the absolute intensity ( Figure S3 Di nt he Supporting Information). In the case of Tb-acac, the intensity differs more noticeably from the lifetime trend, which is a result of the temperature-dependent change of the excitation spectra (see below).A tl ow temperature, the measured t is approximately 1msf or all the studied complexes.…”

Section: Spectroscopic Studies and Luminescence Thermometrysupporting

confidence: 79%

Triplet‐State Position and Crystal‐Field Tuning in Opto‐Magnetic Lanthanide Complexes: Two Sides of the Same Coin

Gálico

Marin

Brunet

et al. 2019

Chemistry A European J

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Lanthanide‐complex‐based luminescence thermometry and single‐molecule magnetism are two effervescent fields of research, owing to the great promise they hold from an application standpoint. The high thermal sensitivity achievable, their contactless nature, along with sub‐micrometric spatial resolution make these luminescent thermometers appealing for accurate temperature probing in miniaturised electronics. To that end, single‐molecule magnets (SMMs) are expected to revolutionise the field of spintronics, thanks to the improvements made in terms of their working temperature—now surpassing that of liquid nitrogen—and manipulation of their spin state. Hence, the combination of such opto‐magnetic properties in a single molecule is desirable in the aim of overcoming, among others, addressability issues. Yet, improvements must be made through design strategies for the realisation of the aforementioned goal. Moving forward from these considerations, we present a thorough investigation of the effect that changes in the ligand scaffold of a family of terbium complexes have on their performance as luminescent thermometers and SMMs. In particular, an increased number of electron‐withdrawing groups yields modifications of the metal coordination environment and a lowering of the triplet state of the ligands. These effects are tightly intertwined, thus, resulting in concomitant variations of the SMM and the luminescence thermometry behaviour of the complexes. Supported by ab initio calculations, we can rationally interpret the observed trends and provide solid foundations for the development of opto‐magnetic lanthanide complexes.

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Section: Spectroscopic Studies and Luminescence Thermometrysupporting

confidence: 79%

Triplet‐State Position and Crystal‐Field Tuning in Opto‐Magnetic Lanthanide Complexes: Two Sides of the Same Coin

Gálico

Marin

Brunet

et al. 2019

Chemistry A European J

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“…In this section, we discuss illustrative examples of complex thermometric systems comprising multiple core@shell nanostructures, polymer‐ and hybrid‐based materials, and heater‐thermometer nanoplatforms …”

Section: Luminescent Thermometers Based On Ln3+ Ionsmentioning

confidence: 99%

“…Multiple core@shell architectures are attracting much interest in recent years due to the possibility of combining distinct functions on a single nanostructure (see ref. for an updated review). An interesting approach is the use of these structures as double ratiometric nanothermometers.…”

Section: Luminescent Thermometers Based On Ln3+ Ionsmentioning

confidence: 99%

Lanthanide‐Based Thermometers: At the Cutting‐Edge of Luminescence Thermometry

Brites

Balabhadra

Carlos

2018

Advanced Optical Materials

739

679

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Present technological demands in disparate areas, such as microfluidics and nanofluidics, microelectronics and nanoelectronics, photonics and biomedicine, among others, have reached to a development such that conventional contact thermal probes are not accomplished anymore to perform accurate measurements with submicrometric spatial resolution. The development of novel noncontact thermal probes is, then, mandatory, contributing to an expansionary epoch of luminescence thermometry. Luminescence thermometry based on trivalent lanthanide ions has become very popular since 2010 due to the unique versatility, stability, and narrow emission band profiles of the ions that cover the entire electromagnetic spectrum with relatively high emission quantum yields. Here, a perspective overview on the field is given from the beginnings in the 1950s until the most recent cutting‐edge examples. The current movement toward usage of the technique as a new tool for thermal imaging, early tumor detection, and as a tool for unveiling the properties of the thermometers themselves or of their local neighborhoods is also summarized.

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“…Doping of semi-conductors and oxides has been pivotal in the development of modern technologies as it enables one to nely tune electronic and optical properties of the materials. [1][2][3][4][5][6] At the nanometric scale, a crucial glass ceiling remains in the ability to control the doping mechanisms. 7,8 Indeed, being able to dope on demand nanoparticles with the desired impurities is still challenging because of self-purication mechanisms 9 or affinity issues between the impurities and the particles' surface during their growth.…”

Section: Introductionmentioning

confidence: 99%