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Article

Description of a Naphthoquinonic Crystal Produced by the Fungus Scytalidium cuboideum

Wood Science & Engineering, Oregon State University, Corvallis, OR 97331, USA
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Molecules 2018, 23(8), 1905; https://doi.org/10.3390/molecules23081905
Received: 12 July 2018 / Revised: 27 July 2018 / Accepted: 28 July 2018 / Published: 31 July 2018
(This article belongs to the Section Natural Products Chemistry)
Intarsia was an art form popular between the 15th–18th centuries that used wood pigmented by spalting fungi to create detailed landscapes, portraits, and other imagery. These fungi are still used today in art but are also finding relevance in material science as elements of solar cells, textile dyes, and paint colorants. Here we show that the spalting fungus Scytalidium cuboideum (Sacc. and Ellis) Sigler and Kang produces a red/pink pigment that forms two distinct colors of crystals (red and orange)—a very rare occurrence. In addition, a second structure of the crystal is proved through nuclear magnetic resonance (NMR). This is only the second instance of a stable, naphthoquinone crystal produced by a fungus. Its discovery is particularly valuable for solar cell development, as crystalline materials have a higher electrical conductivity. Other fungi in this order have shown strong potential as thin films for solar cells. View Full-Text
Keywords: organic crystal; naphthoquinone; Scytalidium cuboideum; XRD; TEM; NMR organic crystal; naphthoquinone; Scytalidium cuboideum; XRD; TEM; NMR
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MDPI and ACS Style

Gutierrez, S.M.V.; Hazell, K.K.; Simonsen, J.; Robinson, S.C. Description of a Naphthoquinonic Crystal Produced by the Fungus Scytalidium cuboideum. Molecules 2018, 23, 1905. https://doi.org/10.3390/molecules23081905

AMA Style

Gutierrez SMV, Hazell KK, Simonsen J, Robinson SC. Description of a Naphthoquinonic Crystal Produced by the Fungus Scytalidium cuboideum. Molecules. 2018; 23(8):1905. https://doi.org/10.3390/molecules23081905

Chicago/Turabian Style

Gutierrez, Sarath M. Vega, Kenya K. Hazell, John Simonsen, and Seri C. Robinson. 2018. "Description of a Naphthoquinonic Crystal Produced by the Fungus Scytalidium cuboideum" Molecules 23, no. 8: 1905. https://doi.org/10.3390/molecules23081905

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