Yuzer, A. CelilGenc, EminegulKurtay, GulbinYanalak, GizemAslan, EmreHarputlu, ErsanOcakoglu, Kasim2025-03-172025-03-1720211359-73451364-548Xhttps://doi.org/10.1039/d1cc03880jhttps://hdl.handle.net/20.500.13099/1909Novel zinc phthalocyanine derivatives, ZnPc-1 and ZnPc-2, consisting of one and four imidazole units, respectively, have been synthesized and utilized as panchromatic photosensitizers for photocatalytic and photoelectrochemical H-2 evolution. The effect of the imidazole-anchoring group on the photocatalytic H-2 production has been compared with ZnPc-3, which possesses a carboxylic acid unit as the anchoring group. ZnPc-1/TiO2 shows the best photoactivity with the highest H-2 evolution rate of 0.4006 mmol g(-1) h(-1), which is much higher than that of ZnPc-2/TiO2 and ZnPc-3/TiO2 (0.3319 mmol g(-1) h(-1) and 0.3555 mmol g(-1) h(-1), respectively). After 20 h of irradiation, ZnPc-1 produces an H-2 production rate of 3.4187 mmol g(-1) with a turnover number (TON) of 14863 and a solar-to-hydrogen energy (STH) conversion efficiency of 1.03%, without using a co-catalyst.eninfo:eu-repo/semantics/closedAccessCarbon NanotubesInfrared SpectraDyeDonorNanoarchitecturesPolymersMetalArticle10.1039/d1cc03880j577391969199Q2WOS:0006872705000012-s2.0-8511500694034519304Q1