Highly Selective Ratiometric Emission Color Change by Zinc-Assisted Self-Assembly Processes

2010 ◽  
Vol 122 (30) ◽  
pp. 5236-5240 ◽  
Author(s):  
Takuya Ogawa ◽  
Junpei Yuasa ◽  
Tsuyoshi Kawai
Keyword(s):  
Self Assembly ◽  
Color Change ◽  
Emission Color

Highly Selective Ratiometric Emission Color Change by Zinc-Assisted Self-Assembly Processes

2010 ◽  
Vol 49 (30) ◽  
pp. 5110-5114 ◽  
Author(s):  
Takuya Ogawa ◽  
Junpei Yuasa ◽  
Tsuyoshi Kawai
Keyword(s):  
Self Assembly ◽  
Color Change ◽  
Emission Color

Photochromism and emission-color change in Ba3MgSi2O8-based phosphors

2016 ◽  
Vol 173 ◽  
pp. 237-242 ◽  
Author(s):  
Yoshinori Yonezaki ◽  
Shino Takei
Keyword(s):  
Color Change ◽  
Emission Color

scholarly journals New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6608
Author(s):  
Justyna Czajka ◽  
Agata Szczeszak ◽  
Nina Kaczorowska ◽  
Stefan Lis
Keyword(s):  
Color Change ◽  
Emission Spectra ◽  
Luminescent Properties ◽  
Luminescence Spectroscopy ◽  
Solid State Method ◽  
Light Emitting ◽  
Tetragonal Crystal ◽  
Emission Color ◽  
The Matrix ◽  
Cie Chromaticity

Due to the ongoing need to create phosphors with the appropriate emission color for the production of light emitting diodes, we decided to synthesize a series of multicolour microphosphors with tunable visible emissions, depending on the composition of dopant ions. In this work, we investigated the structure, morphology, and luminescent properties of new molybdate–tungstate phosphors co-doped with Tb3+ and Eu3+ ions. The conventional high temperature solid state method was used to prepare a series of CaMoyW1−yO4:Eu3+x/Tb3+1−x materials. In order to obtain phosphors with the most promising luminescent properties, the experiment was planned by taking into account the different composition of the matrix and the concentration of the particular dopant ions (Eu3+x/Tb3+1−x, x = 0.001, 0.003, 0.005, 0.007, 0.009). As a result, luminescent materials were obtained with a pure tetragonal crystal structure, the space group of I41/a, confirmed by X-ray diffraction (XRD). The size and shape of the particles obtained from the materials were analyzed based on scanning electron microscopy images. Luminescence spectroscopy (excitation and emission spectra, decay lifetimes) was utilized to characterize the luminescence properties of the as-prepared phosphors. The color change of the emission from green-yellow to orange-red was confirmed using the 1931 Comission Internationale de l’Eclairage (CIE) chromaticity coordinates and color correlated temperature (CCT).

Composite Elastomer Exhibiting a Stress-Dependent Color Change and High Toughness Prepared by Self-Assembly of Silica Particles in a Polymer Network

2020 ◽  
Vol 2 (9) ◽  
pp. 4078-4089 ◽  
Author(s):  
Eiji Miwa ◽  
Kenta Watanabe ◽  
Fumio Asai ◽  
Takahiro Seki ◽  
Kenji Urayama ◽  
...  
Keyword(s):  
Self Assembly ◽  
Color Change ◽  
Polymer Network ◽  
Silica Particles ◽  
High Toughness ◽  
Stress Dependent

Reversible Emission Color Change of Eu-Polymer Complex Induced by Acetone

2011 ◽  
Vol 51 (2) ◽  
pp. 235-241 ◽  
Author(s):  
Yaoming Zhang ◽  
Qihua Wang ◽  
Chao Wang ◽  
Xianqiang Pei ◽  
Tingmei Wang
Keyword(s):  
Color Change ◽  
Polymer Complex ◽  
Emission Color

Phosphor Thermometry by Using Rare Earth-Doped Yttrium Oxides

2011 ◽  
Author(s):  
Naohiro Ishiwada ◽  
Satoko Fujioka ◽  
Toshihisa Ueda ◽  
Takeshi Yokomori
Keyword(s):  
Intensity Ratio ◽  
Color Change ◽  
Thermal Quenching ◽  
Ratio Method ◽  
Temperature Dependent ◽  
Phosphor Material ◽  
Emission Color ◽  
Phosphor Thermometry ◽  
Increasing Temperature ◽  
Rare Earth Doped

The development of new temperature-dependent phosphor particles for high temperature thermometry is presented. To develop the phosphor material that can be applied to the intensity ratio method, the photoluminescence of Y2O3:Tb,Tm was investigated with elevating temperature. As a result, Y2O3:Tb,Tm phosphor shows that the peak intensity at 456 nm is still strong at more than 1100 K whereas the other peak intensities decrease due to the thermal quenching. Thus, the intensity ratio I543nm/I456nm has a high gradient and linearity over a wide temperature range, and it is confirmed that Y2O3:Tb,Tm provides a higher resolution in temperature measurement than Y2O3:Tb and Y2O3:Tm. Also, since this phosphor changes its emission color from green to blue with increasing temperature, it is possible to measure temperature not only by analyzing the intensity ratio but also by observing the color change in appearance. It can, therefore, be expected to use as a Visual Thermo-Sensor (VTS).

Interlayer Interactions in Self-Assembled Poly(Phenylene Vinylene) Multilayer Heterostructures, Implications for Light-Emitting and Photorectifying Diodes

1994 ◽  
Vol 369 ◽  
Author(s):  
A.C. Fou ◽  
O. Onitsuka ◽  
M. Ferreira ◽  
M.F. Rubner ◽  
B.R. Hsieh
Keyword(s):  
Ultrathin Films ◽  
Self Assembly ◽  
Organic Light Emitting Diodes ◽  
Phenylene Vinylene ◽  
Layer By Layer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Emission Color ◽  
Multilayer Heterostructures ◽  
Self Assembled

AbstractLayer-by-layer molecular self-assembly has been used to fabricate multilayer heterostructures containing poly(phenylene vinylene) (PPV) and a variety of polyanions. These ultrathin films exhibit widely different photoluminescence intensities and peak positions (emission color) depending on the polyanion used. The characteristics of light-emitting devices based on such films are described. This represents the first demonstration of working organic light-emitting diodes, the active layer of which consists of ultrathin, self-assembled films of between 130 - 500 Å

scholarly journals Luminescent platinum(ii) complexes with self-assembly and anti-cancer properties: hydrogel, pH dependent emission color and sustained-release properties under physiological conditions

2015 ◽  
Vol 6 (7) ◽  
pp. 3823-3830 ◽  
Author(s):  
Johnson Lui-Lui Tsai ◽  
Taotao Zou ◽  
Jia Liu ◽  
Tianfeng Chen ◽  
Anna On-Yee Chan ◽  
...  
Keyword(s):  
Sustained Release ◽  
Self Assembly ◽  
Physiological Conditions ◽  
Emission Color ◽  
Anti Cancer ◽  
Ph Dependent

Luminescent platinum(ii) complexes show anti-cancer and pH-dependent self-assembly and sustained-release properties under physiological conditions.

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