Erratum to “New near-infrared indocyanines and their spectral properties in SiO2 sol-gel” [Dyes and Pigments 61 (2004) 103–107]

2004 ◽  
Vol 62 (2) ◽  
pp. 197
Author(s):  
Liqiu Wang ◽  
Xiaojun Peng ◽  
Fengling Song ◽  
Erhu Lu ◽  
Jingnan Cui ◽  
...  
Keyword(s):  
Spectral Properties ◽  
Near Infrared ◽  
Sol Gel ◽  
Dyes And Pigments

New near-infrared indocyanines and their spectral properties in SiO2 sol-gel

2004 ◽  
Vol 61 (2) ◽  
pp. 103-107 ◽  
Author(s):  
Liqiu Wang ◽  
Xiaojun Peng ◽  
Fengling Song ◽  
Erhu Lu ◽  
Jingnan Cui ◽  
...  
Keyword(s):  
Spectral Properties ◽  
Near Infrared ◽  
Sol Gel

scholarly journals Upconversion Luminescence of Silica–Calcia Nanoparticles Co-doped with Tm3+ and Yb3+ Ions

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 937
Author(s):  
Katarzyna Halubek-Gluchowska ◽  
Damian Szymański ◽  
Thi Ngoc Lam Tran ◽  
Maurizio Ferrari ◽  
Anna Lukowiak
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Upconversion Luminescence ◽  
Sol Gel ◽  
Emission Spectra ◽  
Transmission Electron ◽  
Characteristic Emission ◽  
Diffraction Patterns ◽  
Size Of Particles ◽  
Average Size

Looking for upconverting biocompatible nanoparticles, we have prepared by the sol–gel method, silica–calcia glass nanopowders doped with different concentration of Tm3+ and Yb3+ ions (Tm3+ from 0.15 mol% up to 0.5 mol% and Yb3+ from 1 mol% up to 4 mol%) and characterized their structure, morphology, and optical properties. X-ray diffraction patterns indicated an amorphous phase of the silica-based glass with partial crystallization of samples with a higher content of lanthanides ions. Transmission electron microscopy images showed that the average size of particles decreased with increasing lanthanides content. The upconversion (UC) emission spectra and fluorescence lifetimes were registered under near infrared excitation (980 nm) at room temperature to study the energy transfer between Yb3+ and Tm3+ at various active ions concentrations. Characteristic emission bands of Tm3+ ions in the range of 350 nm to 850 nm were observed. To understand the mechanism of Yb3+–Tm3+ UC energy transfer in the SiO2–CaO powders, the kinetics of luminescence decays were studied.

A phthalocyanine-based fluorescent sensor for Zn2+ ion

2013 ◽  
Vol 17 (01n02) ◽  
pp. 99-103 ◽  
Author(s):  
Hui He ◽  
Jian-Yong Liu ◽  
Dennis K.P. Ng
Keyword(s):  
Metal Ions ◽  
Spectral Properties ◽  
Fluorescence Spectra ◽  
Near Infrared ◽  
Fluorescent Sensor ◽  
High Sensitivity ◽  
Absorption And Fluorescence Spectra

This paper describes the preparation and spectral properties of a near-infrared fluorophore in which two bis(2-picolyl)amino moieties are axially linked to a silicon(IV) phthalocyanine core. The effects of various metal ions on its absorption and fluorescence spectra have been examined. The results indicate that this compound shows a high sensitivity and moderate selectivity toward Zn2+ ion.

Near-Infrared Luminescence from Sol−Gel Materials Doped with Holmium(III) and Thulium(III) Complexes

2008 ◽  
Vol 112 (34) ◽  
pp. 13240-13247 ◽  
Author(s):  
Song Dang ◽  
Li-Ning Sun ◽  
Hong-Jie Zhang ◽  
Xian-Min Guo ◽  
Zhe-Feng Li ◽  
...  
Keyword(s):  
Near Infrared ◽  
Sol Gel ◽  
Infrared Luminescence

scholarly journals Mode Sensitivity Exploration of Silica–Titania Waveguide for Refractive Index Sensing Applications

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7452
Author(s):  
Muhammad A. Butt ◽  
Andrzej Kaźmierczak ◽  
Cuma Tyszkiewicz ◽  
Paweł Karasiński ◽  
Ryszard Piramidowicz
Keyword(s):  
Refractive Index ◽  
High Performance ◽  
Near Infrared ◽  
Sol Gel ◽  
Cost Effective ◽  
Dip Coating ◽  
Infrared Wavelength ◽  
Refractive Index Sensing ◽  
Sensing Applications ◽  
Coating Method

In this paper, a novel and cost-effective photonic platform based on silica–titania material is discussed. The silica–titania thin films were grown utilizing the sol–gel dip-coating method and characterized with the help of the prism-insertion technique. Afterwards, the mode sensitivity analysis of the silica–titania ridge waveguide is investigated via the finite element method. Silica–titania waveguide systems are highly attractive due to their ease of development, low fabrication cost, low propagation losses and operation in both visible and near-infrared wavelength ranges. Finally, a ring resonator (RR) sensor device was modelled for refractive index sensing applications, offering a sensitivity of 230 nm/RIU, a figure of merit (FOM) of 418.2 RIU−1, and Q-factor of 2247.5 at the improved geometric parameters. We believe that the abovementioned integrated photonics platform is highly suitable for high-performance and economically reasonable optical sensing devices.

Near-Infrared Luminescence from Y2O3:Eu3+, Yb3+ Prepared by Sol–Gel Method

2014 ◽  
Vol 14 (6) ◽  
pp. 4486-4489 ◽  
Author(s):  
Ying Xie ◽  
Lin J. Xiao ◽  
Feng Q. Yan ◽  
Yong J. Chen ◽  
Wen Z. Li ◽  
...  
Keyword(s):  
Near Infrared ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Infrared Luminescence

Microwave, Visible and near Infrared Spectral Properties as a Function of Water Content in Organic Soils

1998 ◽  
Vol 24 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Q.P. Xu ◽  
J.B. Boisvert ◽  
I. Rubinstein ◽  
C. Hersom ◽  
N. Tremblay ◽  
...  
Keyword(s):  
Water Content ◽  
Spectral Properties ◽  
Near Infrared ◽  
Organic Soils ◽  
Infrared Spectral

Syntheses and Spectral Properties of Tetra-(4,4-Dimethyl-Phenyl) Dithiolene Nickel Complex

2013 ◽  
Vol 469 ◽  
pp. 81-86
Author(s):  
Xue Hua Cheng ◽  
Xiu Lan Xin ◽  
Li Hua Yin ◽  
Yang Yu
Keyword(s):  
Thermal Stability ◽  
Melting Point ◽  
Infrared Spectrum ◽  
Spectral Properties ◽  
Nickel Complex ◽  
Near Infrared ◽  
Nickel Complexes ◽  
Raw Material ◽  
Synthesis Time ◽  
Photo Stability

Tetra-(4,4-dimethyl-phenyl) dithiolene nickel complex was synthesized by sulfuration with P2S5 and nickel complexs using bis-(4,4-dimethyl-phenyl) ethanedione as raw material. The structure of dithiolene nickel complexes was characterized by melting point, IR and 1HNMR. The maximum absorption spectra of this dithiolene nickel complexes in different solvent was measured by Ultraviolet-Visible-near Infrared Spectrum, and the photo stability and thermal stability were discussed. The results showed that this new method was used to synthesis bis-(4,4-dimethyl-phenyl) ethanedione, which greatly reduces the synthesis time compared to previous methods.

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