TY - JOUR
T1 - Green electrogenerated chemiluminescence using a quinacridone derivative as a guest molecule
AU - Koinuma, Yugo
AU - Ishimatsu, Ryoichi
AU - Kato, Emiri
AU - Mizuno, Jun
AU - Kasahara, Takashi
N1 - Funding Information:
This research was partially supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Number JP19K15424 , the IMRA Japan Award, and Toshiba Electronic Devices & Storage Corporation .
Publisher Copyright:
© 2021 The Authors
PY - 2021/6
Y1 - 2021/6
N2 - We have developed a solution-based green electrogenerated chemiluminescence (ECL) cell using a quinacridone derivative, 5,12-dibutyl-1,3,8,10-tetramethylquinacridone (TMDBQA), as a fluorescent guest. 2-tert-Butyl-9,10-di(naphth-2-yl)anthracene (TBADN) and 4,4′-bis[4-(diphenylamino)styryl]biphenyl (BDAVBi) were used as host and assist dopant molecules, respectively, and dissolved in an organic solvent with the guest. When a direct current voltage of 5.5 V was applied, the microfluidic ECL cell, which has a 5-μm-thick microchannel sandwiched between two transparent electrodes, exhibited bright green emission from TMDBQA with a maximum luminance of 40.9 cd/m2 and a maximum current efficiency of 2.25 cd/A. However, if both TBADN and BDAVBi were absent from the solution, ECL emission was not observed. Thus, a possible mechanism for the efficient ECL emission of TMDBQA is proposed, involving a two-step energy transfer from TBADN through BDAVBi. We believe that the concept of host–guest solutions will be useful in developing novel light-emitting devices.
AB - We have developed a solution-based green electrogenerated chemiluminescence (ECL) cell using a quinacridone derivative, 5,12-dibutyl-1,3,8,10-tetramethylquinacridone (TMDBQA), as a fluorescent guest. 2-tert-Butyl-9,10-di(naphth-2-yl)anthracene (TBADN) and 4,4′-bis[4-(diphenylamino)styryl]biphenyl (BDAVBi) were used as host and assist dopant molecules, respectively, and dissolved in an organic solvent with the guest. When a direct current voltage of 5.5 V was applied, the microfluidic ECL cell, which has a 5-μm-thick microchannel sandwiched between two transparent electrodes, exhibited bright green emission from TMDBQA with a maximum luminance of 40.9 cd/m2 and a maximum current efficiency of 2.25 cd/A. However, if both TBADN and BDAVBi were absent from the solution, ECL emission was not observed. Thus, a possible mechanism for the efficient ECL emission of TMDBQA is proposed, involving a two-step energy transfer from TBADN through BDAVBi. We believe that the concept of host–guest solutions will be useful in developing novel light-emitting devices.
UR - http://www.scopus.com/inward/record.url?scp=85105459436&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85105459436&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2021.107047
DO - 10.1016/j.elecom.2021.107047
M3 - Article
AN - SCOPUS:85105459436
SN - 1388-2481
VL - 127
JO - Electrochemistry Communications
JF - Electrochemistry Communications
M1 - 107047
ER -