Facile synthesis of homogeneous CuInS2 quantum dots with tunable near-infrared emission

2016 ◽  
Vol 4 (9) ◽  
pp. 1895-1899 ◽  
Author(s):  
Kezhen Qi ◽  
Yu Wang ◽  
Ruidan Wang ◽  
Di Wu ◽  
Guo-Dong Li
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Surface Passivation ◽  
Infrared Emission ◽  
Facile Synthesis ◽  
One Pot ◽  
Cuins2 Quantum Dots ◽  
Near Infrared Emission ◽  
Tunable Emission

Ternary CuInS2 quantum dots (QDs) with homogeneous and tunable emission ranging from 693 to 835 nm were synthesized via a one-pot thermolysis route. The fluorescence of CuInS2 QDs was greatly enhanced via surface passivation of ZnS layers.

scholarly journals Extending the Near Infrared Emission Range of Indium Phosphide Quantum Dots for Multiplexed In Vivo Imaging

2021 ◽  
Author(s):  
Alexander M. Saeboe ◽  
Alexey Y. Nikiforov ◽  
Reyhaneh Toufanian ◽  
Joshua C. Kays ◽  
Margaret Chern ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Indium Phosphide ◽  
Near Infrared ◽  
Infrared Emission ◽  
Full Potential ◽  
Lymph Node Imaging ◽  
Nir Imaging ◽  
Near Infrared Emission ◽  
Tunable Emission

AbstractThis report of the reddest emitting indium phosphide quantum dots (InP QDs) to date demonstrates tunable, near infrared (NIR) photoluminescence and fluorescence multiplexing in the first optical tissue window with a material that avoids toxic constituents. This synthesis overcomes the InP synthesis “growth bottleneck” and extends the emission peak of InP QDs deeper into the first optical tissue window using an inverted QD heterostructure. The ZnSe/InP/ZnS core/shell/shell structure is designed to produce emission from excitons with heavy holes confined in InP shells wrapped around larger-bandgap ZnSe cores and protected by a second shell of ZnS. The InP QDs exhibit InP shell thickness-dependent tunable emission with peaks ranging from 515 – 845 nm. The high absorptivity of InP leads to effective absorbance and photoexcitation of the QDs with UV, visible, and NIR wavelengths in particles with diameters of eight nanometers or less. These nanoparticles extend the range of tunable direct-bandgap emission from InP-based nanostructures, effectively overcoming a synthetic barrier that has prevented InP-based QDs from reaching their full potential as NIR imaging agents. Multiplexed lymph node imaging in a mouse model shows the potential of the NIR-emitting InP particles for in vivo imaging.

scholarly journals Extending the Near-Infrared Emission Range of Indium Phosphide Quantum Dots for Multiplexed In Vivo Imaging

Nano Letters ◽  
2021 ◽  
Author(s):  
Alexander M. Saeboe ◽  
Alexey Yu. Nikiforov ◽  
Reyhaneh Toufanian ◽  
Joshua C. Kays ◽  
Margaret Chern ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Indium Phosphide ◽  
In Vivo Imaging ◽  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission

One-pot synthesis of β-cyclodextrin modified Au nanoclusters with near-infrared emission

2020 ◽  
Vol 56 (42) ◽  
pp. 5580-5583 ◽  
Author(s):  
Wenjing Li ◽  
Xi Wang ◽  
Tao Jiang ◽  
Xiang Ma ◽  
He Tian
Keyword(s):  
Near Infrared ◽  
Gold Nanoclusters ◽  
Infrared Emission ◽  
Au Nanoclusters ◽  
One Pot ◽  
One Pot Synthesis ◽  
Near Infrared Emission

β-Cyclodextrin modified gold nanoclusters with near-infrared emission were facilely and successfully prepared based on a one-pot and green supramolecular macrocycle modification strategy.

Vapour Sensitivity of InP Surface Quantum Dots

2014 ◽  
Vol 605 ◽  
pp. 177-180 ◽  
Author(s):  
Roberta de Angelis ◽  
Mauro Casalboni ◽  
Liliana D’Amico ◽  
Fabio de Matteis ◽  
Fariba Hatami ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Room Temperature ◽  
Near Infrared ◽  
Surface Recombination ◽  
Surface States ◽  
Infrared Emission ◽  
Polar Solvents ◽  
Solvent Type ◽  
Near Infrared Emission ◽  
Inp Surface

We studied the effect of solvent vapours on the photoluminescent emission of self-assembled InP surface quantum dots (SQDs). Their room temperature near infrared emission undergoes a fully reversible intensity enhancement when the dots were exposed to vapours of polar solvents since polar molecules are likely to be adsorbed onto intrinsic surface states and thus reducing non radiative surface recombination. The shape and position of the emission band does not change. The observed effect is dependent on solvent type and concentration with linear law over a limited concentration range.

Near-infrared emission from PbS quantum dots in polymer matrix

2007 ◽  
Vol 3 (5) ◽  
pp. 337-338 ◽  
Author(s):  
Xiao-song Zhang ◽  
Xiao-yi Dong ◽  
Yan-ge Liu ◽  
Gui-yun Kai ◽  
Zhi Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Polymer Matrix ◽  
Near Infrared ◽  
Infrared Emission ◽  
Near Infrared Emission ◽  
Pbs Quantum Dots

Tunable near-infrared emission of binary nano- and mesoscale GUMBOS

RSC Advances ◽  
2014 ◽  
Vol 4 (54) ◽  
pp. 28471-28480 ◽  
Author(s):  
Atiya N. Jordan ◽  
Noureen Siraj ◽  
Susmita Das ◽  
Isiah M. Warner
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Förster Resonance Energy Transfer ◽  
Near Infrared Emission ◽  
Tunable Emission ◽  
Förster Resonance

Mixtures of GUMBOS were used to form binary nanomaterials with tunable emission spectra due to Förster resonance energy transfer (FRET).

scholarly journals Deep Ultraviolet to Near-Infrared Emission and Photoresponse in Layered N-Doped Graphene Quantum Dots

ACS Nano ◽  
2014 ◽  
Vol 8 (6) ◽  
pp. 6312-6320 ◽  
Author(s):  
Libin Tang ◽  
Rongbin Ji ◽  
Xueming Li ◽  
Gongxun Bai ◽  
Chao Ping Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Graphene Quantum Dots ◽  
Infrared Emission ◽  
Doped Graphene ◽  
Deep Ultraviolet ◽  
Near Infrared Emission
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