Multi-color microfluidic electrochemiluminescence cells

Takashi Kasahara, Shigeyuki Matsunami, Tomohiko Edura, Ryoichi Ishimatsu, Juro Oshima, Miho Tsuwaki, Toshihiko Imato, Shuichi Shoji, Chihaya Adachi, Jun Mizuno

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We demonstrated multi-color microfluidic electrochemiluminescence (ECL) cells. 5,6,11,12-Tetraphenylnaphthacene (rubrene), 9,10-diphenylanthracene (DPA), tetraphenyldibenzoperiflanthene (DBP)-doped rubrene, and 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) dissolved in a mixed organic solvent of 1,2-dichlorobenzene and acetonitrile in the ratio of 2:1 (v/v) were used as yellow, blue, red, and green ECL solutions, respectively. Light emissions were confirmed using simple-structured ECL cells consisting of two indium tin oxide (ITO) coated glass substrates with an SU-8 spacer of thickness varying from 0.9 to 6 μm. The SU-8-based microfluidic ECL cells were fabricated using photolithography and heterogeneous bonding techniques through the use of epoxy- and amine-terminated self-assembled monolayers. The emitting layers were formed on-demand by injecting the chosen ECL solutions into the microchannels sandwiched between ITO anode and cathode pairs. Multi-color ECL was successfully obtained at the light-emitting pixels. The microfluidic ECL cells with DBP-doped rubrene solution showed a maximum luminance of 11.6 cd/m2 and the current efficiency of ca. 0.32 cd/A at 8 V. We expect that the proposed microfluidic device will be a highly promising technology for liquid-based light-emitting applications.

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalSensors and Actuators, A: Physical
Volume214
DOIs
Publication statusPublished - 2014 Aug 1

Fingerprint

Microfluidics
Color
color
Tin oxides
cells
indium oxides
Indium
tin oxides
microfluidic devices
Light emission
Self assembled monolayers
Photolithography
photolithography
microchannels
luminance
Microchannels
Acetonitrile
Organic solvents
spacers
acetonitrile

Keywords

  • Electro-microfluidic
  • Electrochemiluminescence
  • Microfluidic ECL cells
  • Microfluidic OLED
  • Multi-color
  • Passive-matrix

ASJC Scopus subject areas

  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Instrumentation
  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Kasahara, T., Matsunami, S., Edura, T., Ishimatsu, R., Oshima, J., Tsuwaki, M., ... Mizuno, J. (2014). Multi-color microfluidic electrochemiluminescence cells. Sensors and Actuators, A: Physical, 214, 225-229. https://doi.org/10.1016/j.sna.2014.04.039

Multi-color microfluidic electrochemiluminescence cells. / Kasahara, Takashi; Matsunami, Shigeyuki; Edura, Tomohiko; Ishimatsu, Ryoichi; Oshima, Juro; Tsuwaki, Miho; Imato, Toshihiko; Shoji, Shuichi; Adachi, Chihaya; Mizuno, Jun.

In: Sensors and Actuators, A: Physical, Vol. 214, 01.08.2014, p. 225-229.

Research output: Contribution to journalArticle

Kasahara, T, Matsunami, S, Edura, T, Ishimatsu, R, Oshima, J, Tsuwaki, M, Imato, T, Shoji, S, Adachi, C & Mizuno, J 2014, 'Multi-color microfluidic electrochemiluminescence cells', Sensors and Actuators, A: Physical, vol. 214, pp. 225-229. https://doi.org/10.1016/j.sna.2014.04.039
Kasahara T, Matsunami S, Edura T, Ishimatsu R, Oshima J, Tsuwaki M et al. Multi-color microfluidic electrochemiluminescence cells. Sensors and Actuators, A: Physical. 2014 Aug 1;214:225-229. https://doi.org/10.1016/j.sna.2014.04.039
Kasahara, Takashi ; Matsunami, Shigeyuki ; Edura, Tomohiko ; Ishimatsu, Ryoichi ; Oshima, Juro ; Tsuwaki, Miho ; Imato, Toshihiko ; Shoji, Shuichi ; Adachi, Chihaya ; Mizuno, Jun. / Multi-color microfluidic electrochemiluminescence cells. In: Sensors and Actuators, A: Physical. 2014 ; Vol. 214. pp. 225-229.
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AU - Kasahara, Takashi

AU - Matsunami, Shigeyuki

AU - Edura, Tomohiko

AU - Ishimatsu, Ryoichi

AU - Oshima, Juro

AU - Tsuwaki, Miho

AU - Imato, Toshihiko

AU - Shoji, Shuichi

AU - Adachi, Chihaya

AU - Mizuno, Jun

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N2 - We demonstrated multi-color microfluidic electrochemiluminescence (ECL) cells. 5,6,11,12-Tetraphenylnaphthacene (rubrene), 9,10-diphenylanthracene (DPA), tetraphenyldibenzoperiflanthene (DBP)-doped rubrene, and 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) dissolved in a mixed organic solvent of 1,2-dichlorobenzene and acetonitrile in the ratio of 2:1 (v/v) were used as yellow, blue, red, and green ECL solutions, respectively. Light emissions were confirmed using simple-structured ECL cells consisting of two indium tin oxide (ITO) coated glass substrates with an SU-8 spacer of thickness varying from 0.9 to 6 μm. The SU-8-based microfluidic ECL cells were fabricated using photolithography and heterogeneous bonding techniques through the use of epoxy- and amine-terminated self-assembled monolayers. The emitting layers were formed on-demand by injecting the chosen ECL solutions into the microchannels sandwiched between ITO anode and cathode pairs. Multi-color ECL was successfully obtained at the light-emitting pixels. The microfluidic ECL cells with DBP-doped rubrene solution showed a maximum luminance of 11.6 cd/m2 and the current efficiency of ca. 0.32 cd/A at 8 V. We expect that the proposed microfluidic device will be a highly promising technology for liquid-based light-emitting applications.

AB - We demonstrated multi-color microfluidic electrochemiluminescence (ECL) cells. 5,6,11,12-Tetraphenylnaphthacene (rubrene), 9,10-diphenylanthracene (DPA), tetraphenyldibenzoperiflanthene (DBP)-doped rubrene, and 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) dissolved in a mixed organic solvent of 1,2-dichlorobenzene and acetonitrile in the ratio of 2:1 (v/v) were used as yellow, blue, red, and green ECL solutions, respectively. Light emissions were confirmed using simple-structured ECL cells consisting of two indium tin oxide (ITO) coated glass substrates with an SU-8 spacer of thickness varying from 0.9 to 6 μm. The SU-8-based microfluidic ECL cells were fabricated using photolithography and heterogeneous bonding techniques through the use of epoxy- and amine-terminated self-assembled monolayers. The emitting layers were formed on-demand by injecting the chosen ECL solutions into the microchannels sandwiched between ITO anode and cathode pairs. Multi-color ECL was successfully obtained at the light-emitting pixels. The microfluidic ECL cells with DBP-doped rubrene solution showed a maximum luminance of 11.6 cd/m2 and the current efficiency of ca. 0.32 cd/A at 8 V. We expect that the proposed microfluidic device will be a highly promising technology for liquid-based light-emitting applications.

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KW - Microfluidic OLED

KW - Multi-color

KW - Passive-matrix

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