Synthesis and Preparation of Eu(BA)3Phen and its Fluorescent Falsification-Resistant Screen Printing Ink

2015 ◽  
Vol 1096 ◽  
pp. 336-339
Author(s):  
Jie Meng
Keyword(s):  
Visible Light ◽  
Ultraviolet Light ◽  
Ir Spectrum ◽  
Screen Printing ◽  
Europium Complex ◽  
Fluorescent Properties ◽  
Uv Spectrum ◽  
Europium Ion ◽  
Characteristic Emission ◽  
Printing Ink

Europium complex Eu (BA)3Phen was synthesised by selecting the fine Benzoyl acetone (BA) as the first ligand, o-phenanthroline (Phen) as the second ligand . IR spectrum indicated that europium ion has bonded with the ligands. The fluorescent properties and UV spectrum were studied. And fluorescent falsification-resistant screen printing ink was prepared , the fluorescent ink showed the characteristic emission of Eu3+, showed invisible in the visible light and showed obvious fluorescence under ultraviolet light.

Study on Preparation and Properties of Fluorescent Offset Printing Ink

2010 ◽  
Vol 174 ◽  
pp. 393-396 ◽  
Author(s):  
Wen Cai Xu ◽  
Yin Yang ◽  
Jia Yue Sun
Keyword(s):  
Visible Light ◽  
Temperature Dependence ◽  
Ultraviolet Light ◽  
Shear Viscosity ◽  
Luminescence Properties ◽  
Offset Printing ◽  
Printing Technology ◽  
Fluorescent Pigment ◽  
Printing Ink ◽  
Red Emitting Phosphor

The ultraviolet (UV) fluorescent anti-counterfeiting offset printing ink, which can emit visible light (400-800 nm) under the excitation of ultraviolet light (200-400 nm), has been extensively adopted in the modern printing technology. In this paper, we used the red-emitting phosphor BaCaBO3F: Eu3+, Li+ as the fluorescent pigment for printing ink and investigated the influence on additive amount of the luminescence properties of fluorescent ink in order to determine a more ideal ratio of fluorescent ink .Besides, the shear viscosity, thixotropy, visco-elasticity and the temperature dependence of viscosity according to the rheology theory and rheological technique were also studied, and finally the valuable parameters and patterns were successfully obtained.

Synthesis and Application of Europium-Doped Complexes in Fluorescence Falsification-Resistant Ink

2010 ◽  
Vol 174 ◽  
pp. 437-440
Author(s):  
Jie Meng ◽  
Cheng Sun ◽  
Jian Qing Wang ◽  
Wen Shun Sun ◽  
Xiao Xiu Hao ◽  
...  
Keyword(s):  
Visible Light ◽  
Ir Spectra ◽  
Ultraviolet Light ◽  
Fluorescence Properties ◽  
Printing Industry ◽  
Europium Complexes ◽  
Red Fluorescence ◽  
Characteristic Emission

Fluorescence falsification-resistant ink is one of the most widely used ink in packaging and printing industry. In this paper, europium complexes were synthesized by doping no-fluorescence inert ions Gd3+. IR spectra indicated that these complexes have similar structures, have bonded with the legends. The fluorescence properties indicated that the doping ions Gd3+ can enhance the fluorescence intensities, the best mole ratio of Gd3+ to Eu3+ is 1:9；At last, fluorescence falsification-resistant ink was prepared, the fluorescence ink showed the characteristic emission of Eu3+ , showed invisible in visible light and showed red fluorescence under ultraviolet light.

Study on Synthesis and Fluorescent Properties of Ternary and Quaternary Rare Earth Europium Complexes

2011 ◽  
Vol 380 ◽  
pp. 103-106
Author(s):  
Xao Xiu Hao ◽  
Jie Meng ◽  
Cheng Sun
Keyword(s):  
Rare Earth ◽  
Fluorescence Intensity ◽  
Fluorescence Emission ◽  
Relative Fluorescence Intensity ◽  
Fluorescent Properties ◽  
Europium Complexes ◽  
Europium Ion ◽  
Photochromic Materials ◽  
Printing Ink ◽  
Low Symmetry

Synthesis and fluorescent properties of rare earth Rare earth complexes ultraviolet photochromic materials such as ternary and quaternary europium complexes were synthesized in this,we selected the high luminescent β-diketones such as α-thenoyltrifluoroacetone(HTTA),fine fragrant carboxylic acid and o-phenanthroline as ligands. The structure of the ternary and quaternary europium complexes were studied by IR spectrum, indicated that these complexes have bonded with the ligands. The fluorescent properties were studied systematically by fluorescence spectrophotometer, relative fluorescence intensity of the ternary and quaternary europium complexes were quantitative determinated ,these europium complexes showed invisible in the visible light and showed obvious red fluorescence under ultraviolet light. This study of the rare earth europium photochromic materials have theoretical and practical application guidance to security printing ink and packing. Experiment shows, The fluorescence properties of Eu(BA)3Phen and Eu(BA)(TTA)2Phen indicated that two excitation spectrum are banded spectrum, the energy which the ligands have absorbed transmitted effectively to europium ion. The fluorescence emission bands of Eu(BA)3Phen and Eu(BA)(TTA)2Phen are similar, but the relative fluorescence intensity of 5D0→7F2 of Eu(BA)(TTA)2Phen is far bigger than Eu(BA)3Phen. The two complexes have the low symmetry, have the good monochromaticity.

A Highly Luminescent Europium Complex Showing Visible-Light-Sensitized Red Emission: Direct Observation of the Singlet Pathway

2004 ◽  
Vol 43 (38) ◽  
pp. 5010-5013 ◽  
Author(s):  
Chi Yang ◽  
Li-Min Fu ◽  
Yuan Wang ◽  
Jian-Ping Zhang ◽  
Wing-Tak Wong ◽  
...  
Keyword(s):  
Visible Light ◽  
Direct Observation ◽  
Europium Complex ◽  
Red Emission

scholarly journals Rare earth oxynitrides: Promising visible-light-driven photocatalysts for water splitting

2021 ◽  
Author(s):  
Shijia Jiang ◽  
Yanxin Liu ◽  
Jun Xu
Keyword(s):  
Rare Earth ◽  
Visible Light ◽  
Water Splitting ◽  
Ultraviolet Light ◽  
Energy Crisis ◽  
Potential Solution ◽  
Global Energy ◽  
Ultraviolet Light Irradiation ◽  
Visible Light Driven ◽  
Main Component

Photocatalytic water splitting is a potential solution for global energy crisis. However, most photocatalysts only respond to ultraviolet light irradiation, which is not the main component of sunlight. The photocatalysis...

Enhancing functionalities of organic ultraviolet-visible phototransistors incorporating spiropyran-merocyanine photochromic materials

2021 ◽  
Vol 9 (39) ◽  
pp. 22522-22532
Author(s):  
Ren-Jie Wu ◽  
Yueh-Ling Hsu ◽  
Wei-Yang Chou ◽  
Horng-Long Cheng
Keyword(s):  
Visible Light ◽  
Energy Saving ◽  
Ultraviolet Light ◽  
Photochromic Materials

A photoexcited merocyanine molecule triggers several distinct photoresponse features of organic phototransistors, enabling distinction between ultraviolet light and visible light and realising an energy-saving optical synapse.

Extending the excitation wavelength from UV to visible light for a europium complex-based mitochondria targetable luminescent probe for singlet oxygen

2018 ◽  
Vol 47 (37) ◽  
pp. 12852-12857 ◽  
Author(s):  
Hua Ma ◽  
Xin Wang ◽  
Bo Song ◽  
Liu Wang ◽  
Zhixin Tang ◽  
...  
Keyword(s):  
Visible Light ◽  
Singlet Oxygen ◽  
Europium Complex ◽  
Excitation Wavelength ◽  
Luminescent Probe ◽  
Luminescence Detection

A visible-light-excitable Eu3+ complex-based luminescent probe for the time-gated luminescence detection of singlet oxygen in vitro and in vivo.

Combined Manufacture Methods for High Density LTCC Substrates: Thick Film Screen Printing, Ink Jet, Postfiring Thin Film Processes, and Laser-Drilled Fine Vias

2009 ◽  
Vol 6 (1) ◽  
pp. 6-12 ◽  
Author(s):  
Arne Albertsen ◽  
Koji Koiwai ◽  
Kyoji Kobayashi ◽  
Tomonori Oguchi ◽  
Katsumi Aruga
Keyword(s):  
Thin Film ◽  
Thick Film ◽  
Screen Printing ◽  
Flip Chip ◽  
High Density ◽  
Uv Laser ◽  
Fine Pitch ◽  
Ink Jet ◽  
Printing Ink ◽  
Base Substrate

This paper highlights the possible combination of technologies such as thick film screen printing, ink jet, and post-firing thin film processes in conjunction with laser-drilled fine vias to produce high-density, miniaturized LTCC substrates. To obtain the silver pattern on the inner layers, both conventional thick film printing and ink jet printing (using nano silver particle dispersed ink) were applied on the ceramic green sheets. The ink jet process made it possible to metallize fine lines with line/space = 30/30 μm. For interlayer connections, fine vias of 30 μm in diameter formed by UV laser were used. Then these sheets were stacked on top of each other and fired to obtain a base substrate. On this base substrate, fine copper patterns for flip chip mounting were formed by a thin film process. The surface finish consisted of a nickel passivation and a gold layer deposited by electroless plating. The combination of the three patterning processes for conducting traces and UV laser drilling of fine vias make it appear possible to realize fine pitch LTCC, for example, for flip chip device mounting.

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