Enrichment of molecular antenna triplets amplifies upconverting nanoparticle emission

Garfield, David J.; Borys, Nicholas J.; Hamed, Samia M.; Torquato, Nicole A.; Tajon, Cheryl; Tian, Bining; Shevitski, Brian; Barnard, Edward S.; Suh, Yung Doug; Aloni, Shaul; Neaton, Jeffrey B.; Chan, Emory M.; Cohen, Bruce E.; Schuck, P. James

doi:10.1038/s41566-018-0156-x

Cited by 216 publications

(221 citation statements)

References 41 publications

Supporting

Mentioning

216

Contrasting

Unclassified

Order By: Relevance

“…It should be noted that the strong brightness of each nanoparticle is highly anticipated to achieve high signal‐to‐noise ratios in imaging‐based technologies. Though the highest quantum yields of upconversion nanoparticles are still lower than 7.6%, their brightness has been greatly enhanced in recent years through strategies such as enriching the dopants concentration or employing dye sensitization and other local field stimulations . The low quantum yield issue is possibly being addressed by strategies such as lattice manipulation, and surface modification.…”

Section: Discussionmentioning

confidence: 99%

Impact of Lanthanide Nanomaterials on Photonic Devices and Smart Applications

Zhou

Leaño

Liu³

et al. 2018

Small

139

View full text Add to dashboard Cite

Half a century after its initial emergence, lanthanide photonics is facing a profound remodeling induced by the upsurge of nanomaterials. Lanthanide-doped nanomaterials hold promise for bioapplications and photonic devices because they ally the unmatched advantages of lanthanide photophysical properties with those arising from large surface-to-volume ratios and quantum confinement that are typical of nanoobjects. Cutting-edge technologies and devices have recently arisen from this association and are in turn promoting nanophotonic materials as essential tools for a deeper understanding of biological mechanisms and related medical diagnosis and therapy, and as crucial building blocks for next-generation photonic devices. Here, the recent progress in the development of nanomaterials, nanotechnologies, and nanodevices for clinical uses and commercial exploitation is reviewed. The candidate nanomaterials with mature synthesis protocols and compelling optical uniqueness are surveyed. The specific fields that are directly driven by lanthanide doped nanomaterials are emphasized, spanning from in vivo imaging and theranostics, micro-/nanoscopic techniques, point-of-care medical testing, forensic fingerprints detection, to micro-LED devices.

show abstract

Section: Discussionmentioning

confidence: 99%

Impact of Lanthanide Nanomaterials on Photonic Devices and Smart Applications

Zhou

Leaño

Liu³

et al. 2018

Small

139

View full text Add to dashboard Cite

show abstract

“…This is mainly because of their resistance to photobleaching and high temperature treatment, as well as relatively low phonon energy in contrast to organic compounds . Moreover, the Ln 3+ ‐doped inorganic materials may exhibit up‐conversion (UC) phenomena, i.e., anti‐Stokes emission of higher‐energy photons, generated by the absorption of two or more lower‐energy photons …”

Section: Introductionmentioning

confidence: 99%

Optical Vacuum Sensor Based on Lanthanide Upconversion—Luminescence Thermometry as a Tool for Ultralow Pressure Sensing

Runowski

Woźny

Lis

et al. 2020

Adv Materials Technologies

116

103

View full text Add to dashboard Cite

the measured spectroscopic parameter is usually a pressure-induced line shift, i.e., spectral shift of the emission bands of Cr 3+ (ruby) or Sm 2+ . [14,15,20,22] Whereas, in the case of temperature the commonly measured parameter is the luminescence intensity ratio (LIR), i.e., band ratio of two thermally coupled levels (TCLs; separated by ≈200-2000 cm −1 ) of, e.g., Nd 3+ , Er 3+ , or Tm 3+ , which is directly related to the local temperature of the system (probe), and conforms Boltzmann distribution. [3,[23][24][25] A great number of optically active functional materials is based on the Ln 2+/3+ , because of their unique spectroscopic properties, such as multicolor photoluminescence induced by UV or near-infrared (NIR) (energy up-conversion) irradiation, narrow absorption/emission bands, large spectral shift of the emission bands in relation to the absorption ones, long emission lifetimes, etc. [26][27][28][29][30][31][32][33][34][35] Matrices hosting Ln 3+ ions are usually fluorides, oxides, vanadates, phosphates, and borates. [3,4,11,12,[19][20][21][22][23][24][25][26] This is mainly because of their resistance to photobleaching and high temperature treatment, as well as relatively low phonon energy in contrast to organic compounds. [3][4][5][19][20][21][22][23][24][25][26] Moreover, the Ln 3+ -doped inorganic materials may exhibit up-conversion (UC) phenomena, i.e., anti-Stokes emission of higher-energy photons, generated by the absorption of two or more lowerenergy photons. [32,[36][37][38][39] Thanks to the high absorption cross-section of Yb 3+ in the NIR range, and the presence of a ladder-like structure of Ln 3+ energy levels, the upconverting materials codoped with Yb 3+ / Ln 3+ (Ln 3+ = Ho 3+ , Er 3+ , Tm 3+ ) may work not only as temperature sensors, but also as optical "heaters," as during their irradiation with a high-power NIR lasers they locally heat up. [40][41][42][43][44][45][46][47][48] This is due to the occurrence of various nonradiative processes between the Ln 3+ ions, quenching luminescence of the material and leading to heat generation. [43][44][45][46][47][48] Thanks to the efficient light-to-heat conversion, the optical heating phenomenon can be utilized in photothermal therapies, thermophotovoltaics, formation of new materials under extreme conditions, etc. [43][44][45][46][47][48][49] Currently, temperature of the system can be optically monitored in a relatively broad range, starting from cryogenic up to around ≈10 3 K, whereas pressure could be monitored only in the "high-pressure" range (≈10 2 -10 6 bar). These limitations are associated with the fundamental concept of pressure sensing, i.e., measurements of physical parameters directly Currently the lowest optically determinable pressure values are around 10 2 bar, making the pressure below inaccessible for optical detection. This work shows for the first time how to overcome these limitations, and optically monitor the low pressure values in a vacuum region (from ≈10 −5 to 10 −2 bar), utilizing the light-induced and pressure-g...

show abstract

“…16,18 In addition, plasmonic nanostructures coupled to dye molecules and thin-lm semiconductor layers enable enhanced light capturing or light emitting efficiency, which is promising for solar energy conversion, light-emitting devices and more applicable opportunities. 4,19 A key aspect in the eld of plasmonic nanostructures is to manipulate light-matter interactions for optical tunability. Such tunability, achieved by tailoring the dimension, geometry and concentration of the metallic nanostructures, helps to meet crucial control requirements for photonic devices, such as resonant frequency, polarization angle or propagation directions.…”

Section: Introductionmentioning

confidence: 99%