Small Molecules Containing Amphoteric Imidazole Motifs as Sensitizers for Dye-Sensitized Solar Cells: An Overview

Visible-to-near-infrared light-harvesting A-π-D-π-A porphyrins for boosted photocatalytic hydrogen evolution

“…Also, it indicates that there is an efficient charge transfer possible from the donor part to the acceptor part, and thus efficient photoinduced charge separation is anticipated upon photoexcitation. 45 Notably, however, in the case of ZnTPP , the population of HOMOs and LUMOs are mainly located on the porphyrin moiety and hence, they are not very favorable for photoinduced charge separation. Finally, DFT studies reveal that the A-π-D-π-A porphyrins ZnP-BT and ZnP-CPDT can produce increased hole–electron pair generation and their migration in the PHE systems compared to the simple ZnTPP which lacks the A-π-D-π-A molecular architecture and consequently expectable efficient PHE properties for A-π-D-π-A porphyrins ( vide infra ).…”

Nonlinear optical-active ferrocene conjugated Y-shaped imidazole donor–π–acceptor [(D–π)2–IM–π–A] compounds for dye-sensitized solar cells using non-corrosive copper complexes as a redox mediator

“…25 Thus, imidazole-based organic dyes are used as molecular sensitizers in DSSCs. 26 Ferrocenyl-based imidazole molecules appear to be of great interest in this field, because the conjugated framework offers improvement in the charge-transfer transition from the auxiliary electron donor to first electron donor. 18 The Y-shaped imidazole (IM) molecules [(D–π) 2 –IM–π–A], with the two donors at the peripheral C4/C5 positions of the imidazole and the acceptor at the C2 position, show high charge transferability due to the presence of electron deficient nitrogen in the imidazole unit.…”

An overview on AIEgen‐decorated porphyrins: Current status and applications

“…Porphyrin and its derivatives are called a “color of life” due to their extensive availability in the form of natural pigments, such as chlorophyll, protoheme, and vitamin B 12 . Nevertheless, recently, they have gained much attention in a wide range of applications, such as photovoltaics, [ 1–4 ] biomedical fields, [ 5–8 ] photocatalytic hydrogen evolution (PHE) [ 9–14 ] and carbon dioxide reduction, [ 15–17 ] chemical sensors, [ 18–21 ] supramolecular chemistry, [ 22 ] and organic geochemistry [ 23,24 ] because of their excellent light‐harvesting ability, visible‐to‐near‐infrared emission, versatile redox properties, and chemical and photochemical stabilities. Besides, the photophysical and electrochemical properties of porphyrins can be facilely modified by linking different chromophores at the four meso ‐ and eight β ‐positions, and the inclusion of variable metals within the porphyrin macrocycle.…”

“…Porphyrin and its derivatives are called a "color of life" due to their extensive availability in the form of natural pigments, such as chlorophyll, protoheme, and vitamin B 12 . Nevertheless, recently, they have gained much attention in a wide range of applications, such as photovoltaics, [1][2][3][4] biomedical fields, [5][6][7][8] photocatalytic hydrogen evolution (PHE) [9][10][11][12][13][14] and carbon dioxide reduction, [15][16][17] chemical sensors, [18][19][20][21] supramolecular chemistry, [22] and organic geochemistry [23,24] because of their excellent lightharvesting ability, visible-to-near-infrared emission, versatile redox properties, and chemical and photochemical stabilities.…”