scholarly journals Visual Detection of Triethylamine and a Dual Input/Output Logic Gate Based on a Eu3+-Complex

Molecules ◽  
2021 ◽  
Vol 26 (11) ◽  
pp. 3244
Author(s):  
Bao-Ning Li ◽  
Yuan-Yuan Liu ◽  
Ya-Ping Wang ◽  
Mei Pan
Keyword(s):  
Energy Transfer ◽  
Optical Sensors ◽  
Visual Detection ◽  
Logic Gate ◽  
Dmso Solution ◽  
Input Output ◽  
Promising Candidate ◽  
Bluish Green ◽  
Red Luminescence ◽  
Luminescence Color

A series of Ln3+-metal centered complexes, Ln(TTA)3(DPPI) (Ln = La, 1; Ln = Eu, 2; Ln = Tb, 3; or Ln = Gd, 4) [(DPPI = N-(4-(1H-imidazo [4,5-f][1,10]phenanthrolin-2-yl)phenyl)-N-phenylbenzenamine) and (TTA = 2-Thenoyltrifluoroacetone)] have been synthesized and characterized. Among which, the Eu3+-complex shows efficient purity red luminescence in dimethylsulfoxide (DMSO) solution, with a Commission International De L’ Eclairage (CIE) coordinate at x = 0.638, y = 0.323 and ΦEuL = 38.9%. Interestingly, increasing the amounts of triethylamine (TEA) in the solution regulates the energy transfer between the ligand and the Eu3+-metal center, which further leads to the luminescence color changing from red to white, and then bluish-green depending on the different excitation wavelengths. Based on this, we have designed the IMPLICATION logic gate for TEA recognition by applying the amounts of TEA and the excitation wavelengths as the dual input signal, which makes this Eu3+-complex a promising candidate for TEA-sensing optical sensors.

Luminescence color tuning and energy transfer properties in (Sr,Ba)2LaGaO5:Bi3+,Eu3+ solid solution phosphors: realization of single-phased white emission for WLEDs

2019 ◽  
Vol 7 (43) ◽  
pp. 13536-13547 ◽  
Author(s):  
Dongjie Liu ◽  
Peipei Dang ◽  
Xiaohan Yun ◽  
Guogang Li ◽  
Hongzhou Lian ◽  
...  
Keyword(s):  
Solid Solution ◽  
Energy Transfer ◽  
Color Tuning ◽  
White Emission ◽  
Bluish Green ◽  
Transfer Properties ◽  
Luminescence Color

Controllable emission tuning from bluish-green to red was achieved by Ba2+/Sr2+ substitution and Bi3+ → Eu3+ energy transfer.

scholarly journals Novel Tunable Green-Red Luminescence in Mn2+ Doped Ca9Tb(PO4)7 Phosphors Based on the Mn2+ Regulation and Energy Transfer

Coatings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 952
Author(s):  
Bingwen Yang ◽  
Yefeng Feng ◽  
Qinghu Zhao ◽  
Miao He ◽  
Yang Lv
Keyword(s):  
Energy Transfer ◽  
Green Emission ◽  
Energy Transfer Mechanism ◽  
Red Emission ◽  
Broadband Emission ◽  
Characteristic Emission ◽  
Potential Applications ◽  
Light Excitation ◽  
Red Luminescence ◽  
Thermal Stability Of

β-Ca3(PO4)2 type phosphors Ca9Tb(PO4)7:Mn2+ were fabricated by high temperature solid state reaction. Under 377 nm light excitation, the Ca9Tb(PO4)7 host displays the green emission attributable to the characteristic emission of Tb3+ ions peaking at 488, 542, 586, and 620 nm, respectively. The red broadband emission is observed when Ca9Tb(PO4)7 is doped with Mn2+ ions. The emission is attributed to the energy transfer from Tb3+ to Mn2+ ions; this facilitates the realization of the tunable green–red emission. The energy transfer mechanism from Tb3+ to Mn2+ is defined as quadrupole–quadrupole interaction. Furthermore, the thermal stability of Ca9Tb(PO4)7:Mn2+ samples has been studied, and it can maintain half the emission intensity exceeding 424 K. This demonstrates their potential applications in white light LEDs (w-LEDs).

Luminescence color tuning of Ce3+ and Tb3+ co-doped Ca2YZr2Al3O12 phosphors with high color rendering index via energy transfer

2020 ◽  
Vol 228 ◽  
pp. 117557
Author(s):  
Mingyang Qu ◽  
Xiyan Zhang ◽  
Xiaoyun Mi ◽  
Haiying Sun ◽  
Quansheng Liu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Color Tuning ◽  
Color Rendering Index ◽  
Color Rendering ◽  
Co Doped ◽  
Luminescence Color

Multiconfigurable logic gate operation in 1D polydiacetylene microtube waveguide

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53794-53799 ◽  
Author(s):  
Guang Yang ◽  
Yan Zhang ◽  
Hongyan Xia ◽  
Gang Zou ◽  
Qijin Zhang
Keyword(s):  
Energy Transfer ◽  
Fluorescence Resonance Energy Transfer ◽  
Logic Gate ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Gate Operation ◽  
Electrical Modulation ◽  
Fluorescence Resonance

Reversible electrical modulation of waveguiding in a 1D viologen-modified PDA microtube based on fluorescence resonance energy transfer. By applying a voltage, the emission at the tip of the VFPDA microtube was decreased (−1.5 V), or was returned to original values (1.5 V).

Color Locating of Ce3+ and Eu2+ Doped Calcium Magnesium Chlorosilicate UV-LED Phosphors

2011 ◽  
Vol 216 ◽  
pp. 16-20 ◽  
Author(s):  
Quan Shen ◽  
Man Man Lu ◽  
Hai Lin ◽  
Chang Min Li
Keyword(s):  
Green Emission ◽  
Mixed Effect ◽  
Co Doping ◽  
Red Phosphors ◽  
Uv Led ◽  
Bluish Green ◽  
Calcium Magnesium ◽  
Co Doped ◽  
Luminescence Color ◽  
The Ideal

Color coordinates (0.1573, 0.0528) and (0.1542, 0.4663) have been identified in Ce3+and Eu2+singly doped calcium magnesium chlorosilicate (CMSC) phosphors, which present the purplish-blue and green lights under ultraviolet (UV) radiation, respectively. In Ce3+/Eu2+co-doped CMSC phosphors, with sensitizing the green emission of Eu2+, Ce3+co-doping changed the luminescence color from green to bluish-green, presenting a preferable mixed effect from two primary colors. Potential mixture of red phosphors will provide the possibility in achieving the ideal white fluorescence under UV-LED excitation.

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