Bio-inspired Photocatalytic Ruthenium Complexes: Synthesis, Optical Properties, and Solvatochromic Effect

被引:2
作者
Weissman, Adam [1 ]
Amir, Dan [2 ]
Elias, Yuval [1 ]
Pinkas, Iddo [3 ]
Mathias, Jenny-Lee [1 ]
Benisvy, Laurent [1 ]
Salomon, Adi [1 ]
机构
[1] Bar Ilan Univ, Inst Nanotechnol & Adv Mat BINA, Dept Chem, IL-5290002 Ramat Gan, Israel
[2] Bar Ilan Univ, Inst Nanotechnol & Adv Mat BINA, Dept Life Sci, IL-5290002 Ramat Gan, Israel
[3] Weizmann Inst Sci, Fac Chem, IL-7610001 Rehovot, Israel
基金
以色列科学基金会;
关键词
Marcus theory; metal-organic frameworks; photocatalysis; solvatochromism; water splitting; SENSITIZED SOLAR-CELLS; ELECTRON-TRANSFER; PHOTOSYSTEM-II; PHENOXYL RADICALS; WATER OXIDATION; EXCITED-STATE; LIGANDS; PHOTOCHEMISTRY; COPPER(II); RU(BPY)32+;
D O I
10.1002/cphc.201701061
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We report the synthesis, characterization, and photo-physical properties of two new ruthenium(II)-phenol-imidazole complexes. These bio-mimetic complexes have potential as photocatalysts for water splitting. Owing to their multiple phenol-imidazole groups, they have a higher probability of light-induced radical formation than existing complexes. The newly synthesized complexes show improved overlap with the solar spectrum compared to other ruthenium(II)-phenol-imidazole complexes, and their measured lifetimes are suitable for light-induced radical formation. In addition, we conducted solvatochromic absorption measurements, which elegantly follow Marcus theory, and demonstrate the symmetry differences between the two complexes. The solvatochromic measurements further imply electron localization onto one of the ligands. The new complexes may find applications in photocatalysis, dye-sensitized solar cells, biomedicine, and sensing. Moreover, their multiple chelating units make them promising candidates for light-activated metal organic radical frameworks, i.e. metal-organic frameworks that contain organic radicals activated by light.
引用
收藏
页码:220 / 226
页数:7
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