White electrogenerated chemiluminescence using an anthracene derivative host and fluorescent dopants for microfluidic self-emissive displays

Koinuma, Yugo; Ishimatsu, Ryoichi; Kuwae, Hiroyuki; Okada, Koji; Mizuno, Jun; Kasahara, Takashi

doi:10.1016/j.sna.2020.111966

Cited by 11 publications

(10 citation statements)

References 29 publications

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“…The previous microfluidic ECL cells were fabricated by the heterogeneous bonding technique using epoxyand amine-terminated SAMs. [24][25][26] The obtained result suggests that various carrier injection layers can be coated on the electrodes because the immersion of the substrates into the SAM solution is not required. In our previous work, we developed a low temperature direct bonding of polymethylmethacrylate (PMMA) substrates using a 172 nm VUV treatment in order to fabricate chemical/biochemical microchips, and its bonding mechanism was investigated.…”

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confidence: 86%

“…21) In our previous works, we proposed microfluidic ECL cells to develop liquid-based display applications. [24][25][26] In order to integrate ECL cells on a substrate, SU-8-based microchannels sandwiched between two transparent electrodes were fabricated by a microelectromechanical systems process and a heterogeneous bonding technique through the use of selfassembled monolayers (SAMs). The fabricated microfluidic ECL cells successfully exhibited multi-color ECL emissions at the light-emitting pixels of the microchannels.…”

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confidence: 99%

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Fabrication of microfluidic electrogenerated chemiluminescence cells incorporated with titanium dioxide nanoparticles to improve luminescent performances

Okada

Ishimatsu

Mizuno

et al. 2020

Appl. Phys. Express

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We demonstrated microfluidic electrogenerated chemiluminescence cells incorporated with titanium dioxide nanoparticles (TiO2 NPs). SU-8-based microchannels were fabricated on a fluorine doped tin oxide cathodes-patterned glass substrate. TiO2 NPs were coated on the cathodes as an electron injection layer. The enclosed microchannels were achieved by a direct bonding of the SU-8 surface to an indium tin oxide anode-patterned polyethylene terephthalate film via vacuum ultraviolet treatment. A tris(2,2′-bipyridine)ruthenium(II) solution was used as an emitter. The proposed device exhibited a maximum luminance of 93.5 cd m−2 at 3.3 V, which is 1.45 times higher than that of device without TiO2 NPs.

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confidence: 86%

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confidence: 99%

Fabrication of microfluidic electrogenerated chemiluminescence cells incorporated with titanium dioxide nanoparticles to improve luminescent performances

Okada

Ishimatsu

Mizuno

et al. 2020

Appl. Phys. Express

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“…13 Although traditional ECL systems contain a single emitting species, more recently, ECL solutions containing multiple luminescent materials have been proposed. [14][15][16][17][18][19][20] In 2013, Nobeshima demonstrated an ACdriven white emission cell using yellow and blue fluorescent materials (rubrene and 9,10-diphenylanthracene). 14 Since 2014, we have been investigating host-guest ECL systems by referring to the literature on organic light-emitting diodes (OLEDs).…”

Section: Introductionmentioning

confidence: 99%

“…14 Since 2014, we have been investigating host-guest ECL systems by referring to the literature on organic light-emitting diodes (OLEDs). [15][16][17][18][19][20] Generally, OLEDs have a thin emitting layer containing host and guest materials, and carrier injection and transport layers are used to balance the number of electrons and holes in the emitting layer. Electroluminescence is obtained by energy transfer from the excited host molecules to the guests.…”

Section: Introductionmentioning

confidence: 99%

Bright Yellow Electrogenerated Chemiluminescence Cell Using a Rubrene Solution Doped with an Emitting Assist Dopant

et al. 2023

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We demonstrated that the electrogenerated chemiluminescence (ECL) performances of 5,6,11,12-tetraphenyltetracene (rubrene)-based devices can be significantly enhanced by using an emitting assist dopant. We prepared an ECL solution by dissolving rubrene and 4-(di-p-tolylamino)-4′-[(di-p-tolylamino)styryl]stilbene (DPAVB) in an organic solvent. A microfluidic ECL cell having the prepared solution exhibited a bright yellow ECL emission from rubrene with a maximum luminance of 292 cd m −2 at 6.0 V and a maximum current efficiency of 4.50 cd A −1 at 5.5 V. Moreover, a current efficiency of over 3.0 cd A −1 was maintained from 3.0 to 6.5 V. Furthermore, the device lifetime was improved in comparison with the rubrene solution without DPAVB. The emission mechanism was discussed using cyclic voltammogram data. The DPAVB molecule was found to be more readily oxidized and more difficult to be reduced than rubrene. The excited rubrene molecules were expected to be produced efficiently in the device by the electron transfer reactions between rubrene •− and DPAVB •+ as well as rubrene •− and rubrene •+ . Based on the findings, we concluded that the enhanced device characteristics were primarily attributed to the well-balanced generation of radical cations and anions.

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“…In our previous work, we proposed host-guest ECL solutions by referring to the emission mechanism of organic light-emitting diodes (OLEDs). [17][18][19][20] In general, OLED devices are composed of organic semiconductor thin films, and the emitting layer consists of a wide-energy-gap host material and a small amount of a guest material in order to obtain bright and efficient electroluminescence. [21][22][23][24][25][26][27][28] In 2014, we developed a red ECL solution using 5,6,11,12-tetraphenyltetracene (rubrene), which emits yellow fluorescence, as a host material.…”

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Sky-blue electrogenerated chemiluminescence using anthracene derivatives as host and guest molecules

Kato

Ishimatsu

Koinuma

et al. 2022

Jpn. J. Appl. Phys.

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We developed a solution-based sky-blue electrogenerated chemiluminescence (ECL) cell using two kinds of anthracene derivatives. 9,9’-10,10’-Tetraphenyl-2-2’-bianthracene (TPBA) was used as a guest molecule, while 2-tert-butyl-9,10-di(naphth-2-yl)anthracene (TBADN), which emits deep-blue fluorescence, was used as a host molecule. The microfluidic ECL cell with the TPBA-doped TBADN solution exhibited bright emission from TPBA with a maximum luminance of 7.7 cd m-2. By contrast, the ECL intensity was found to be considerably weak when the host was absent in the solution. We believe that the proposed host-guest solution will contribute to the future development of highly efficient ECL display devices.

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White electrogenerated chemiluminescence using an anthracene derivative host and fluorescent dopants for microfluidic self-emissive displays

Cited by 11 publications

References 29 publications

Fabrication of microfluidic electrogenerated chemiluminescence cells incorporated with titanium dioxide nanoparticles to improve luminescent performances

Fabrication of microfluidic electrogenerated chemiluminescence cells incorporated with titanium dioxide nanoparticles to improve luminescent performances

Bright Yellow Electrogenerated Chemiluminescence Cell Using a Rubrene Solution Doped with an Emitting Assist Dopant

Sky-blue electrogenerated chemiluminescence using anthracene derivatives as host and guest molecules

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