Porphyrins in bio-inspired transformations: Light-harvesting to solar cell

The effect of structural changes on charge transfer states in a light-harvesting carotenoid-diaryl-porphyrin-C60 molecular triad

“…3,12,[16][17][18]20,31,34,36,37,40,42,[44][45][46][47][48][49] Modeling natural photosynthesis led to the inclusion of quinones as the electron acceptor among some of the earliest synthesized photosynthetic mimics.…”

“…5,7 The understanding of the fundamental photosynthetic electronic transition pathways, which include singlet-singlet energy transfer, triplet-triplet energy transfer, and photo-initiated electron transfer, has provided a firm platform for the development of chemical systems which duplicate such efficient energy conversion processes. 3,7, The molecular building blocks employed in many artificial reaction centers for the successful mimicry of photosynthetic energy conversion usually consist of organic/inorganic pigments covalently linked to electron donor and/or acceptor moieties 17,18,21,22,24,25,[34][35][36][37][38][39][40][41][42][43] .…”

“…[1][2][3][4][5][6][7][8][9][10][11] Natural photosynthetic reaction centers constitute remarkable molecular-level photovoltaic devices which utilize incident photons to initiate a complex series of electronic transitions to achieve a high-energy charge separated state. 5,7 The understanding of the fundamental photosynthetic electronic transition pathways, which include singlet-singlet energy transfer, triplet-triplet energy transfer, and photo-initiated electron transfer, has provided a firm platform for the development of chemical systems which duplicate such efficient energy conversion processes.…”

Manipulation of supramolecular 2D assembly of functional dyes toward artificial light-harvesting systems

“…Supramolecular architectures primarily depend on the interactions between molecules, such as coordination bonds, hydrogen bonds, van der Waals interactions, and electrostatic interactions. Since porphyrin derivatives have a center metal and/or hydroxyl group in their meso-positions, supramolecular porphryin networks have been studied [8,17,26]. The advantage of method (b) is the flexible structure owing to the supramolecular interactions.…”

“…In regard to (i), many dyes with large extinction coefficients in the visible light region, including porphyrins, phthalocyanine, metal (Ru, Ir, etc.) complexes, perylenebisimide, naphthalenebisimide, and rhodamine, have been utilized as a constituent of artificial LHSs [7][8][9][10][11][12]. Since each dye has a specific absorption region and is different from other dyes, appropriate combinations of these dyes and/or with other molecules have been investigated.…”