NIR-to-NIR emission on a water-soluble {Er6} and {Er3Yb3} nanosized molecular wheel

Nanoscale ◽  
2020 ◽  
Vol 12 (21) ◽  
pp. 11435-11439
Author(s):  
Diogo A. Gálico ◽  
Jeffrey S. Ovens ◽  
Muralee Murugesu
Keyword(s):  
Near Infrared ◽  
Molecular Clusters ◽  
Water Soluble ◽  
Synthetic Approach ◽  
Water Stability ◽  
Facile Synthesis ◽  
Bottom Up ◽  
High Crystallinity ◽  
Nir Emission

Lanthanide molecular clusters as near-infrared markers are highly tunable owing to the bottom-up synthetic approach. Facile synthesis, high crystallinity, water stability are all highly desirable attributes of clusters for biological and telecommunications technology.

Facile Synthesis of High-Quality, Water-Soluble, Near-Infrared-Emitting PbS Quantum Dots

2009 ◽  
Vol 2009 (23) ◽  
pp. 3440-3446 ◽  
Author(s):  
Dawei Deng ◽  
Wenhao Zhang ◽  
Xinyang Chen ◽  
Fei Liu ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Water Soluble ◽  
Facile Synthesis ◽  
High Quality ◽  
Quality Water ◽  
Pbs Quantum Dots

The facile one-step aqueous synthesis of near-infrared emitting Cu+ doped CdS quantum dots as fluorescence bioimaging probes with high quantum yield and low cytotoxicity

2015 ◽  
Vol 3 (34) ◽  
pp. 6971-6978 ◽  
Author(s):  
Ting-Ting Sun ◽  
Ming Wu ◽  
Xi-Wen He ◽  
Wen-You Li ◽  
Xi-Zeng Feng
Keyword(s):  
Near Infrared ◽  
Water Soluble ◽  
Cds Quantum Dots ◽  
High Quantum Yield ◽  
3T3 Cells ◽  
Aqueous Synthesis ◽  
Nir Emission ◽  
One Step ◽  
Fluorescence Bioimaging ◽  
Low Cytotoxicity

The water-soluble Cu+:CdS QDs with NIR emission and high PLQY were prepared in a N2 atmosphere and employed as bioimaging probes for 3T3 cells.

Sensitization of near-infrared LnIII [Ln = Yb or Nd] ions using water-soluble, band gap tuneable 3-MPA-capped CdS nanoparticles

2018 ◽  
Vol 6 (11) ◽  
pp. 2814-2821 ◽  
Author(s):  
A. de Bettencourt-Dias ◽  
R. A. Tigaa
Keyword(s):  
Band Gap ◽  
Near Infrared ◽  
Water Soluble ◽  
Cds Nanoparticles ◽  
Nir Emission

3-MPA capped CdS nanoparticles sensitize the NIR emission of NdIII and YbIII.

GREEN ROUTE TO PREPARE BIOCOMPATIBLE AND NEAR INFRARED THIOLATE-PROTECTED COPPER NANOCLUSTERS FOR CELLULAR IMAGING

NANO ◽  
2013 ◽  
Vol 08 (05) ◽  
pp. 1350054 ◽  
Author(s):  
CHAN WANG ◽  
YAN HUANG
Keyword(s):  
Aqueous Solution ◽  
Near Infrared ◽  
Water Solubility ◽  
Reduced Glutathione ◽  
Water Soluble ◽  
Copper Nanoclusters ◽  
Green Route ◽  
Nir Fluorescence ◽  
Nir Emission ◽  
Good Probe

Ultra-small and functional copper nanoclusters (Cu NCs) have been extensively used in consumer technologies due to their superior properties. A simple and green way to prepare stable, water-soluble and near-infrared (NIR) Cu NCs by using a reducing agent was reported in this work. Reduced glutathione (GSH) worked as an important scaffold to prevent NCs from aggregating. Since GSH has functional groups such as carboxyl and amino, it can also be used in reducing Cu 2+ ions. The resulting GSH– Cu NCs with a particle size of 2.5 nm have good dispersibility in aqueous solution, and show NIR emission with a wavelength of 700 nm (quantum yield 0.6%). MC3T3-E1 cells are used as an example in the fluorescence imaging of GSH– Cu NCs. Several promising features including NIR fluorescence, good water-solubility and biocompatibility, bioactive surface and ultra-small size make the GSH– Cu NCs a good probe for cells.

Highly Fluorescent Au25-xAgx Nanoclusters Protected with Poly(ethylene glycol) - and Zwitterion-Modified Thiolate Ligands

2018 ◽  
Author(s):  
Dinesh Mishra ◽  
Sisi Wang ◽  
Zhicheng Jin ◽  
Eric Lochner ◽  
Hedi Mattoussi
Keyword(s):  
Quantum Yield ◽  
Near Infrared ◽  
Small Diameter ◽  
Binding Energies ◽  
Thiolate Ligands ◽  
Nir Emission ◽  
Thiolate Complexes ◽  
Long Lifetime ◽  
Poly Ethylene

<p>We describe the growth and characterization of highly fluorescing, near-infrared-emitting nanoclusters made of bimetallic Au<sub>25-x</sub>Ag<sub>x</sub> cores, prepared using various monothiol-appended hydrophobic and hydrophilic ligands. The reaction uses well-defined triphenylphosphine-protected Au<sub>11</sub> clusters (as precursors), which are reacted with Ag(I)-thiolate complexes. The prepared nanoclusters are small (diameter < 2nm, as characterized by TEM) with emission peak at 760 nm and long lifetime (~12 µs). The quantum yield measured for these materials was 0.3 - 0.4 depending on the ligand. XPS measurements show the presence of both metal atoms in the core, with measured binding energies that agree with reported values for nanocluster materials. The NIR emission combined with high quantum yield, small size and ease of surface functionalization afforded by the coating, make these materials suitable to implement investigations that address fundamental questions and potentially useful for biological sensing and imaging applications.<br></p>

Ligand Influence Versus Electronic Configuration of d-metal Ion in Determining the Fate of NIR Emission from LnIII Ions: A Case Study with CuII, NiII and ZnII Complexes.

2021 ◽  
Author(s):  
Abhineet Verma ◽  
Sk Saddam Hossain ◽  
Sailaja S Sunkari ◽  
Joseph Reibenspies ◽  
Satyen Saha
Keyword(s):  
Metal Ion ◽  
Selection Rule ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Direct Excitation ◽  
Characteristic Emission ◽  
Nir Emission ◽  
Near Infrared Region

Lanthanides (LnIII) are well known for their characteristic emission in the Near-Infrared Region (NIR). However, direct excitation of lanthanides is not feasible as described by Laporte’s parity selection rule. Here,...

Highly thermally stable Cr3+ and Yb3+ codoped Gd2GaSbO7 phosphors for broadband near-infrared applications

2021 ◽  
Author(s):  
xiudi wu ◽  
shuang zhao ◽  
Liang Zhang ◽  
Langping Dong ◽  
Yonghui Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Emission Band ◽  
Near Infrared ◽  
Thermally Stable ◽  
Nir Emission

Abstract：Gd2GaSbO7:Cr3+,Yb3+ phosphors with efficient broadband NIR emission were prepared by solid-state reaction. Under the excitation of 448 nm, Gd2GaSbO7:Cr3+ (GGS:Cr3+) phosphor exhibits a broadband NIR emission band centered at approximately...

Multi-Site Cr3+ Occupation Related Broadband NIR Luminescence in Cr3+-doped Li3Mg2NbO6

CrystEngComm ◽  
2021 ◽  
Author(s):  
Fen Xiao ◽  
Chengning Xie ◽  
Shikun Xie ◽  
Rongxi Yi ◽  
Huiling Yuan ◽  
...  
Keyword(s):  
Near Infrared ◽  
Nir Spectroscopy ◽  
Luminescent Materials ◽  
Optical Source ◽  
Nir Emission ◽  
Nir Luminescence

Broadband near infrared (NIR) luminescent materials have attracted great attention recently for the advance smart optical source of NIR spectroscopy. In this work, a broadband NIR emission from 650 nm...

scholarly journals Facile synthesis of hierarchically porous carbon for supercapacitor derived from water-soluble pitch

2021 ◽  
Vol 631 ◽  
pp. 012101
Author(s):  
Jinliang Zhang ◽  
Junqing Liu ◽  
Danmiao Kang ◽  
Zhijiang Su ◽  
Wenbin Liang ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Water Soluble ◽  
Facile Synthesis ◽  
Hierarchically Porous
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