Structural Requirements of Zinc Porphyrin Derivatives on the Complex-Forming with Light-Harvesting Polypeptides

2000 ◽  
Vol 29 (2) ◽  
pp. 158-159 ◽  
Author(s):  
Ayumi Kashiwada ◽  
Hiroyuki Watanabe ◽  
Toshihisa Mizuno ◽  
Kouji Iida ◽  
Tomohiro Miyatake ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Structural Requirements ◽  
Zinc Porphyrin ◽  
Porphyrin Derivatives

Synthesis of donor-π-acceptor porphyrins for DSSC: DFT-study, comparison of anchoring mode and effectiveness

2020 ◽  
Vol 24 (04) ◽  
pp. 538-547
Author(s):  
Artem V. Ezhov ◽  
Fedor Yu. Vyal’ba ◽  
Kseniya A. Zhdanova ◽  
Andrey P. Zhdanov ◽  
Konstantin Yu. Zhizhin ◽  
...  
Keyword(s):  
Density Functional ◽  
Molecular Design ◽  
Isonicotinic Acid ◽  
Photovoltaic Properties ◽  
Zinc Porphyrin ◽  
Porphyrin Derivatives ◽  
Titanium Dioxide Surface ◽  
The Density Functional Theory ◽  
Phenyl Rings ◽  
Anchoring Groups

In this study two pairs of novel zinc-porphyrin complexes (ZnP1 ZnP2 ZnP3 and ZnP4) were synthesized as sensitizers for DSSC and their photophysical, computational studies and photovoltaic properties were investigated. Structures of proposed dyes are based on a molecular design that relies on donor/[Formula: see text]-bridge/acceptor interactions. Compounds differ by anchoring mode to the titanium dioxide surface: ZnP2 and ZnP4 porphyrins possess carboxyl anchoring groups while ZnP1 and ZnP3 porphyrins have similar structure but without anchors and attached to the surface by isonicotinic acid ligands. All the zinc-porphyrin derivatives bear hexyloxy-chains at the para-positions of their phenyl rings and ZnP3 and ZnP4 contain 1,3,5-triazine fragments as efficient electron transfer bridges. Electron density distribution of the frontier molecular orbitals was calculated based on the density functional theory (DFT). The test DSSC was manufactured and its parameters were measured to compare the effectiveness of the proposed sensitizers. Our results reveal that dyes with an anchoring group directly in their structure demonstrated several times higher efficiency. The use of the triazine fragment proved effective for the introduction of acceptor substituents bearing anchor groups. As a result, the highest efficiency of 4.33% was achieved using the dye ZnP4.

Bis(4′-tert-butylbiphenyl-4-yl)aniline (BBA)-substituted A3B zinc porphyrin as light harvesting material for conversion of light energy to electricity

2020 ◽  
Vol 24 (10) ◽  
pp. 1189-1197
Author(s):  
Naresh Duvva ◽  
Suneel Gangada ◽  
Raghu Chitta ◽  
Lingamallu Giribabu
Keyword(s):  
Solar Cells ◽  
Large Scale ◽  
Light Harvesting ◽  
Low Cost ◽  
Active Material ◽  
Dye Sensitized Solar Cells ◽  
Spectroscopic Techniques ◽  
Solar Panels ◽  
Zinc Porphyrin ◽  
Sensitized Solar Cells

Limited synthetic steps via low-cost starting materials are needed to develop large-scale light-active materials for efficient solar cells. Here, novel bis(4[Formula: see text]-tert-butylbiphenyl-4-yl)aniline (BBA) based A3B zinc porphyrin (GB) is synthesized and applied as a light harvesting/electron injection material in dye-sensitized solar cells. The GB sensitizer was characterized by various spectroscopic techniques and the optimized device shows [Formula: see text] of 10.98 ± 0.37 mA/cm2 and power conversion efficiency (PCE) of 3.34 ± 0.26%. In addition, performance is enhanced up to ∼3.9% by the addition of co-adsorbent 3a,7a-dihydroxy-5b-cholic acid (chenodeoxycholic acid, CDCA) to minimize [Formula: see text]-[Formula: see text] staking of the planar porphyrin macrocycles. These results demonstrate that novel broad-absorbing light-active material (GB) could be used for indoor solar panels.

Novel D-π-A system based on zinc-porphyrin derivatives for highly efficient dye-sensitised solar cells

2011 ◽  
Vol 52 (30) ◽  
pp. 3879-3882 ◽  
Author(s):  
Myung Jun Lee ◽  
Kang Deuk Seo ◽  
Hae Min Song ◽  
Min Soo Kang ◽  
Yu Kyung Eom ◽  
...  
Keyword(s):  
Solar Cells ◽  
Zinc Porphyrin ◽  
Highly Efficient ◽  
Porphyrin Derivatives

Asymmetric zinc porphyrin derivatives bearing three pseudo-pyrimidine meso-position substituents and their photosensitization for H2 evolution

2020 ◽  
Vol 44 (26) ◽  
pp. 11237-11247
Author(s):  
Peng Zeng ◽  
Ya Zheng ◽  
Shengtao Chen ◽  
Haoran Liu ◽  
Renjie Li ◽  
...  
Keyword(s):  
Steric Hindrance ◽  
H2 Evolution ◽  
Zinc Porphyrin ◽  
Porphyrin Derivatives ◽  
Meso Position

ZnPy-6 has lower steric hindrance than ZnPy-5 when the N atoms of the pseudo-pyrimidines combine with g-C3N4 and AA, and thus it exhibits better photosensitization.

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