TY - JOUR
T1 - Photocatalytic H2 Evolution Using a Ru Chromophore Tethered to Six Viologen Acceptors
AU - Yamamoto, Keiya
AU - Call, Arnau
AU - Sakai, Ken
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Numbers JP15H03786 and JP18H01996 (Grants-in-Aid for Scientific Research (B)). This work was also supported by JSPS KAKENHI Grant Number JP24107004 in a Grant-in-Aid for Scientific Research on Innovative Areas “Artificial Photosynthesis”. This work was also supported by JSPS KAKENHI Grant Number JP18H05171 in a Grant-in-Aid for Scientific Research on Innovative Areas “Innovations for Light-Energy Conversion”. This work was also supported by the International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), sponsored by the World Premier International Research Center Initiative (WPI), MEXT, Japan. K.Y. acknowledges research fellowships of WPI-I2CNER.
Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/11/7
Y1 - 2018/11/7
N2 - A new photo-charge separator (PCS) consisting of a [Ru(bpy)3]2+ (bpy=2,2′-bipyridine) chromophore and six viologen (MV2+) acceptors, [Ru(bpyMV2)3]14+, is synthesized and its application in the photocatalytic H2 evolution reaction is reported. The present PCS possesses shorter linkers for connecting the Ru chromophore and the MV2+ acceptors in comparison with our previous PCSs (Inorg. Chem. Front., 2016, 3, 671–680) and shows a consecutive photo-driven electron transfer in the presence of a sacrificial electron donor [ethylenediaminetetraacetic acid (EDTA)], leading to a multi-electron storage over the PCS. This behavior can also be coupled with the catalytic H2 evolution by the presence of a colloidal Pt catalyst. More importantly, the present PCS exhibits a much higher durability during the photolysis, which is attributed to the higher rate in the catalytic process. The high durability is also attributed to its bulky framework preventing undesirable side reactions.
AB - A new photo-charge separator (PCS) consisting of a [Ru(bpy)3]2+ (bpy=2,2′-bipyridine) chromophore and six viologen (MV2+) acceptors, [Ru(bpyMV2)3]14+, is synthesized and its application in the photocatalytic H2 evolution reaction is reported. The present PCS possesses shorter linkers for connecting the Ru chromophore and the MV2+ acceptors in comparison with our previous PCSs (Inorg. Chem. Front., 2016, 3, 671–680) and shows a consecutive photo-driven electron transfer in the presence of a sacrificial electron donor [ethylenediaminetetraacetic acid (EDTA)], leading to a multi-electron storage over the PCS. This behavior can also be coupled with the catalytic H2 evolution by the presence of a colloidal Pt catalyst. More importantly, the present PCS exhibits a much higher durability during the photolysis, which is attributed to the higher rate in the catalytic process. The high durability is also attributed to its bulky framework preventing undesirable side reactions.
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U2 - 10.1002/chem.201803662
DO - 10.1002/chem.201803662
M3 - Article
C2 - 30152563
AN - SCOPUS:85055033144
SN - 0947-6539
VL - 24
SP - 16620
EP - 16629
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 62
ER -