Premium
Electrochemical Stability of Diphenylanthracene and Its Effect on Alternating‐Current‐Driven Blue‐Light Electrochemiluminescence Properties
Author(s) -
Tsuneyasu Shota,
Ichikawa Takuya,
Nakamura Kazuki,
Kobayashi Norihisa
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600896
Subject(s) - electrochemiluminescence , propylene carbonate , electrochemistry , electrolyte , solvent , chemistry , electrode , redox , toluene , photochemistry , materials science , analytical chemistry (journal) , optoelectronics , inorganic chemistry , organic chemistry
Electrochemiluminescence (ECL) is a phenomenon in which light is emitted from excited species generated by electrochemical reactions at electrodes. Alternating‐current‐driven ECL (AC‐ECL) devices show good brightness and fast ECL response in comparison to direct‐current‐driven ECL devices. In this report, we focus on the ECL intensity and long‐term stability of blue‐light‐emitting AC‐ECL systems. We used a mixed solvent of propylene carbonate and toluene (volume ratio=1 : 1) to achieve stable blue ECL from 9,10‐diphenylanthracene (DPA) molecules. We analyzed the electrochemical, optical, and AC‐ECL properties of DPA in this mixed solvent to investigate the effect of the stabilities of redox species on AC‐ECL properties. We found that the composition of the electrolyte solution affects the stability of these species. We conclude that stability of generated active species is required to achieve good performance in blue AC‐ECL devices.