Syntheses of asymmetric porphyrins for photovoltaics

Ole Hagemann; Frederik Krebs

doi:10.1117/12.613439

3 October 2005 Syntheses of asymmetric porphyrins for photovoltaics

Ole Hagemann, Frederik Krebs

Proceedings Volume 5938, Organic Photovoltaics VI; 59380T (2005) https://doi.org/10.1117/12.613439
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Porphyrins have attracted a lot of interest as potential light harvesting dyes in polymer solar cells due to a broad absorption range, wherein the porphyrin serves as a synthetic surrogate for chlorophyll. Asymmetric porphyrins are essential building blocks in one of our polymer solar cell projects. Synthesizing these asymmetric porphyrins on large scale, in good yield, with few scrambling byproducts and without the necessity for chromatographic workup proved to be a challenge. Here we present different approaches to the synthesis of asymmetric trans-A₂B₂-porphyrins and trans-AB₂C-porphyrins on a large scale and detail problems associated with the synthetic work. The products were characterized using SEC, MALDI-TOF, UV-vis and NMR.

Citation Download Citation

Ole Hagemann and Frederik Krebs "Syntheses of asymmetric porphyrins for photovoltaics", Proc. SPIE 5938, Organic Photovoltaics VI, 59380T (3 October 2005); https://doi.org/10.1117/12.613439

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