Fluorescence modulation of a pyrazolone dye in the solid state based on energy transfer

2015 ◽  
Vol 39 (12) ◽  
pp. 9866-9871 ◽  
Author(s):  
Hu Liu ◽  
Ji-Xi Guo ◽  
Dian-Zeng Jia ◽  
Ming-Xi Guo ◽  
Lang Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Fluorescence Modulation

A photochromic pyrazolone is exploited as a modulator to toggle the fluorescence of a dye “on” and “off” based on energy transfer.

Photoresponsive Frameworks: Energy Transfer in the Spotlight

2021 ◽  
Author(s):  
Corey R. Martin ◽  
Kyoung Chul Park ◽  
Ryan E. Corkill ◽  
Preecha Kittikhunnatham ◽  
Gabrielle A. Leith ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Covalent Organic Frameworks ◽  
Photochromic Behavior ◽  
Solid State Materials

In this paper, spiropyran-containing metal- and covalent-organic frameworks (MOFs and COFs, respectively) are probed as platforms for fostering photochromic behavior in solid-state materials while simultaneously promoting directional energy transfer (ET)....

scholarly journals Electrochemiluminescence Study of Europium (III) Complex with Coumarin3-Carboxylic Acid

2008 ◽  
Vol 2008 ◽  
pp. 1-6 ◽  
Author(s):  
Stefan Lis ◽  
Krzysztof Staninski ◽  
Tomasz Grzyb
Keyword(s):  
Aqueous Solution ◽  
Spectral Analysis ◽  
Energy Transfer ◽  
Solid State ◽  
Carboxylic Acid ◽  
Elemental Analysis ◽  
Aluminium Electrode ◽  
The Eu

The europium (III) complex of coumarin-3-carboxylic acid (C3CA) has been prepared and characterized on the basis of elemental analysis, IR, and emission (photoluminescence and electrochemiluminescence) spectroscopy. The synthesised complex having a formula Eu was photophysically characterized in solution and in the solid state. Electrochemiluminescence, ECL, of the system containing the Eu(III)/C3CA complex was studied using an oxide-covered aluminium electrode. The goal of these studies was to show the possibility of the use of electrochemical excitation of the Eu(III) ion in aqueous solution for emission generation. The generated ECL emission was very weak, and therefore its measurements and spectral analysis were carried out with the use of cut-off filters method. The studies proved a predominate role of the ligand-to-metal energy transfer (LMET) in the generated ECL.

Color tunable Ca8ZnM(PO4)7 (M = Lu/Tb, Lu/Eu, Tb/Eu) phosphors: luminescence, energy transfer and thermal stability studies for n-UV white LEDs

2021 ◽  
Author(s):  
Jing Yan ◽  
Chunyan Jiang ◽  
Yulun Xian ◽  
Jianbang Zhou ◽  
Hong Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Energy Transfer ◽  
High Temperature ◽  
Solid State ◽  
Powder Diffraction ◽  
Stability Studies ◽  
X Ray ◽  
White Leds ◽  
Color Tunable ◽  
Xrd Patterns

A series of Tb3+- and Eu3+-doped Ca8ZnLu(PO4)7 (CZLP:Tb3+ and CZLP:Eu3+) as well as Ca8ZnTb(PO4)7:Eu3+ (CZTP:Eu3+) phosphors have been prepared via the traditional high-temperature solid-state reaction. X-ray powder diffraction (XRD) patterns...

Optimization of concentration and length of laser medium in diode-end-pumped solid-state lasers considering energy-transfer-upconversion effects

Optik ◽  
2013 ◽  
Vol 124 (13) ◽  
pp. 1445-1449 ◽  
Author(s):  
Yaoting Wang ◽  
Wujun Li ◽  
Leilei Pan ◽  
Jintao Yu ◽  
Ruihong Zhang
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Laser Medium ◽  
Solid State Lasers ◽  
Energy Transfer Upconversion

A Study on the Luminescent Properties and Energy Transfer of Na2BaMgP2O8:Tb3+, Eu3+ Phosphor

2014 ◽  
Vol 700 ◽  
pp. 113-116
Author(s):  
Yu Jie Chen ◽  
Feng Lan Han ◽  
Zhao Luo
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Powder Diffraction ◽  
Luminescent Properties ◽  
Solid State Lighting ◽  
Diffraction Measurement ◽  
Effective Energy ◽  
X Ray ◽  
Red Color ◽  
Effective Energy Transfer

Na2BaMgP2O8phosphors were synthesized by a standard solid state reaction and their luminescent properties were investigated. The phase structure was analyzed by X-ray powder diffraction measurement. Under the excitation of 365nm, Na2BaMgP2O8:Tb3+, Eu3+phosphors show two color bands of green and red color due to5D4−7F5transition of Tb3+ions and5D0−7F2transition of Eu3+ions, respectively. The emission intensity of Tb3+deceased with the increasing concentration of Eu3+, which verified that an effective energy transfer occurred from Tb3+to Eu3+in Na2BaMgP2O8host. The present study indicated that the phosphors have a high potential application in solid state lighting.

scholarly journals Structure and photoluminescence properties of novel Sr6Ca4(PO4)6F2:Re (Re = Eu2+, Mn2+) phosphors with energy transfer for white-emitting LEDs

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 41282-41288 ◽  
Author(s):  
Hongwei Xu ◽  
Lili Wang ◽  
Dan Qu ◽  
Zhiyun Si ◽  
Jinsheng Shi
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
White Light ◽  
Solid State Reaction ◽  
Photoluminescence Properties ◽  
Light Emitting

A series of Sr6Ca4(PO4)6F2:Eu2+,Mn2+ phosphors were synthesized by traditional solid state reaction. Through controlling the ratio of Eu2+ and Mn2+, emission colors can be tuned from blue to yellow, including white-light-emitting.

scholarly journals Active media based on polyurethane doped with a binary dye mixture

2021 ◽  
Vol 26 (3) ◽  
pp. 24-29
Author(s):  
S. Nikolaiev ◽  
◽  
V. Pozhar ◽  
M. Dzyubenko ◽  
K. Nikolaiev ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Rhodamine 6G ◽  
Spectral Characteristics ◽  
Excitation Energy Transfer ◽  
Dye Lasers ◽  
Lasing Spectrum ◽  
Active Media ◽  
Active Elements ◽  
Sulforhodamine 101

Subject and Purpose. The article is concerned with the spectral-luminescent and lasing characteristics of the radiation from solid-state active media based on polyurethane activated by a binary mixture of dyes. The purpose of these studies is to demonstrate a possibility of the spectral range expansion of the emission from solid-state dye lasers with polyurethane active elements. Methods and Methodology. Specially prepared samples of polyurethane active media having the same donor (Rhodamine 6G) concentration but various acceptor (Sulforhodamine 101) concentrations are experimentally studied for their spectral-luminescent and lasing characteristics. Results. The main spectroscopic characteristics of Rhodamine 6G and Sulforhodamine 101 in polyurethane have been measured, the nonradiative energy transfer parameters in this molecular pair estimated. It has been demonstrated that the matrix emission spectrum can be purposefully transformed by selection of relative concentrations of dyes in the mixture. In a broadband resonator, either a single- or two-band emission with different positions and various intensities of spectral bands is observed depending on the acceptor concentration. In a dispersive resonator under the same conditions, the tuning range of the lasing spectrum expands and extends to the longer wavelengths. Conclusion. The prospects of using donor-acceptor dye mixtures for improving spectral characteristics of polyurethane active elements in solid-state dye lasers have been confirmed. It has been shown that signatures of the emission characteristics of these media are governed by the mechanism of the excitation energy transfer between dye molecules. Lasing has been obtained on polyurethane matrices with the emission wavelength tuning throughout the “green-red” region of the spectrum.

scholarly journals Impact of nanosizing a host matrix based on a metal–organic framework on solid-state fluorescence emission and energy transfer

2022 ◽  
Author(s):  
Hikaru Sakamoto ◽  
Akitaka Ito ◽  
Masataka Ohtani
Keyword(s):  
Energy Transfer ◽  
Solid State ◽  
Metal Organic Framework ◽  
Fluorescence Emission ◽  
Dye Molecules ◽  
Host Matrix ◽  
Metal Organic ◽  
Solid State Fluorescence ◽  
Organic Framework

We demonstrate that the nanosize effect appears to affect the properties of dye molecules encapsulated in the pores of a metal–organic framework (dye@MOF). The emissive properties of the nanosized dye@MOF...

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