@article{ca58fe4f8d254e0180e174af766f6f2a,
title = "Iridium motif linked porphyrins for efficient light-driven hydrogen evolution via triplet state stabilization of porphyrin",
abstract = "Two new iridium motif linked porphyrins, MBPyZnP-Ir and TBPyZnP-Ir are developed for photocatalytic hydrogen evolution (PHE). The tetra-iridium linked one, TBPyZnP-Ir, displayed the highest H2 production rate (ηH2) of 16.12 mmol g-1 h-1 within 5 h of irradiation, which is over 2.73-fold higher than MBPyZnP-Ir (5.90 mmol g-1 h-1) and much higher than their precursors TBPyZnP (0.12 mmol g-1 h-1) and MBPyZnP (0.06 mmol g-1 h-1) without iridium. The superior ηH2 of TBPyZnP-Ir could be explained by the iridium motifs linked to the porphyrin, stabilizing the triplet states of the porphyrin through intramolecular energy transfer; thus enhancing electron transfer from the triplet photo-excited porphyrin moiety to the cobaloxime co-catalyst and consequently proton reduction.",
author = "Tritton, {Daniel Nnaemaka} and Bodedla, {Govardhana Babu} and Geliang Tang and Jianzhang Zhao and Kwan, {Chak Shing} and Leung, {Ken C F} and Wong, {Wai Yeung} and Xunjin Zhu",
note = "Funding Information: This study was supported by Hong Kong Baptist University (FRG2-16-17-024, FRG2-17-18-068, RC-ICRS-18-19-01A, RC- ICRS/15-16/02E, RC-ICRS/1617/02C-CHE, RC-IRMS/16/17/ 02CHEM), the State Key Laboratory of Environmental and Biological Analysis as well as The President's Award for Outstanding Performance in Research Supervision to K. C.-F. L. W.-Y. Wong acknowledges the nancial support from Hong Kong Research Grants Council (PolyU 153051/17P), the National Natural Science Foundation of China (51873176), the Hong Kong Polytechnic University (1-ZE1C) and Ms. Clarea Au for the Endowed Professorship in Energy (847S).",
year = "2020",
month = feb,
day = "14",
doi = "10.1039/c9ta12492f",
language = "English",
volume = "8",
pages = "3005--3010",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "6",
}