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,...

scholarly journals Broadband photoluminescence in a ceramic (Mg2SnO4–SnO2):Cr3+ system

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
N. D. C. Santana ◽  
A. López ◽  
L. P. Sosman ◽  
S. S. Pedro
Keyword(s):  
Room Temperature ◽  
Near Infrared ◽  
Electronic Configuration ◽  
Infrared Region ◽  
Spectroscopic Studies ◽  
Crystal Field Theory ◽  
X Ray ◽  
Broadband Light Source ◽  
Near Infrared Region ◽  
Intense Emission

AbstractThis study reports the synthesis and photoluminescence spectroscopic studies of Cr3+-doped Mg2SnO4–SnO2 ceramics. The crystal structure was analyzed by X-ray powder diffraction, and photoluminescence was investigated at room temperature. The diffractogram confirmed the presence of Mg2SnO4 and SnO2 phases. Photoluminescence spectroscopy identified broad and intense emission bands assigned to the Cr3+ cation occupation in octahedral Mg2SnO4 sites and an orange band assigned to SnO2 emission. All spectra were analyzed and interpreted according to crystal field theory and Tanabe–Sugano theory for the d3 electronic configuration. The broad and intense emission band covering the visible/near-infrared region suggests that this system may be a promising material for use as an active medium in a broadband light source at room temperature.

A smart two-photon fluorescent platform based on desulfurization–cyclization: a phthalimide–rhodamine chemodosimeter for Hg2+ NIR emission at 746 nm and through-bond energy transfer

2017 ◽  
Vol 41 (22) ◽  
pp. 13495-13503 ◽  
Author(s):  
Shan-kun Yao ◽  
Ying Qian ◽  
Zheng-qing Qi ◽  
Chang-gui Lu ◽  
Yi-ping Cui
Keyword(s):  
Energy Transfer ◽  
Bond Energy ◽  
Near Infrared ◽  
Infrared Region ◽  
Two Photon ◽  
Nir Emission ◽  
Near Infrared Region ◽  
Fluorescent Chemodosimeter

In this work, a smart two-photon fluorescent platform based on desulfurization–cyclization was developed, in the construction of TBET-based fluorescent chemodosimeter CyRSN towards Hg2+ in near-infrared region at 746 nm.

Remarkable solid-state fluorescence change from the visible to the near-infrared region based on the protonation/deprotonation of an AIEgen

2020 ◽  
Vol 4 (11) ◽  
pp. 3378-3383
Author(s):  
Yangyang Li ◽  
Xian Wang ◽  
Lei Zhang ◽  
Luqi Liu ◽  
Qiusheng Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Near Infrared ◽  
Infrared Region ◽  
Acid Base ◽  
Fluorescence Switch ◽  
Fluorescence Change ◽  
Nir Emission ◽  
Solid State Fluorescence ◽  
Near Infrared Region

An AIEgen exhibits a fluorescence switch between the visible and the NIR region upon acid/base stimuli, and accessible solid-state NIR emission.

Highly luminescent InP-In(Zn)P/ZnSe/ZnS core/shell/shell colloidal quantum dots with tunable emission synthesized based on growth-doping

2021 ◽  
Author(s):  
Cong Shen ◽  
Yan Qing Zhu ◽  
Zixiao Li ◽  
Jingling Li ◽  
Hong Tao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Infrared Region ◽  
Colloidal Quantum Dots ◽  
High Quality ◽  
Promising Alternative ◽  
Lower Toxicity ◽  
Near Infrared Region ◽  
Inp Quantum Dots ◽  
Tunable Emission

InP quantum dots (QDs) are considered as the most promising alternative to Cd-based QDs with the lower toxicity and emission spectrum tunability ranging from visible to near-infrared region. Although high-quality...

Evaluation of melon drying using hyperspectral imaging technique in the near infrared region

LWT ◽  
2021 ◽  
Vol 143 ◽  
pp. 111092
Author(s):  
Jose Marcelino S. Netto ◽  
Fernanda A. Honorato ◽  
Patrícia M. Azoubel ◽  
Louise E. Kurozawa ◽  
Douglas F. Barbin
Keyword(s):  
Hyperspectral Imaging ◽  
Near Infrared ◽  
Imaging Technique ◽  
Infrared Region ◽  
Near Infrared Region

scholarly journals Retraction: Water-soluble multidentate polymers compactly coating Ag2S quantum dots with minimized hydrodynamic size and bright emission tunable from red to second near-infrared region

Nanoscale ◽  
2020 ◽  
Vol 12 (41) ◽  
pp. 21459-21459
Author(s):  
Charlotte Marshall
Keyword(s):  
Quantum Dots ◽  
Near Infrared ◽  
Infrared Region ◽  
Water Soluble ◽  
Hydrodynamic Size ◽  
Near Infrared Region ◽  
Ag2s Quantum Dots ◽  
Bright Emission

Retraction of ‘Water-soluble multidentate polymers compactly coating Ag2S quantum dots with minimized hydrodynamic size and bright emission tunable from red to second near-infrared region’ by Rijun Gui et al., Nanoscale, 2014, 6, 5467–5473, DOI: 10.1039/C4NR00282B.

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