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 - Aug 1 2014

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

All Science Journal Classification (ASJC) codes

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

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, 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 - Edura, Tomohiko

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AU - Tsuwaki, Miho

AU - Imato, Toshihiko

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