A metal-free blue chromophore derived from plant pigments

B. C. Freitas-Dörr; C. O. Machado; A. C. Pinheiro; A. B. Fernandes; F. A. Dörr; E. Pinto; M. Lopes-Ferreira; M. Abdellah; J. Sá; L. C. Russo; F. L. Forti; L. C. P. Gonçalves; E. L. Bastos

doi:10.1126/sciadv.aaz0421

Research ArticleChemistry

A metal-free blue chromophore derived from plant pigments

View ORCID ProfileB. C. Freitas-Dörr ¹,
View ORCID ProfileC. O. Machado ¹,
View ORCID ProfileA. C. Pinheiro ¹,
View ORCID ProfileA. B. Fernandes ¹,
F. A. Dörr²,
View ORCID ProfileE. Pinto²,
View ORCID ProfileM. Lopes-Ferreira³,
View ORCID ProfileM. Abdellah⁴,⁵,
View ORCID ProfileJ. Sá⁴,⁶,
View ORCID ProfileL. C. Russo⁷,
View ORCID ProfileF. L. Forti⁷,
View ORCID ProfileL. C. P. Gonçalves¹ and
View ORCID ProfileE. L. Bastos ¹,*

¹Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.
²Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.
³Immunoregulation Unit of the Special Laboratory of Applied Toxinology (Center for Toxins, Immune-Response and Cell Signaling/CEPID/FAPESP), Butantan Institute, 05503-900 São Paulo, SP, Brazil.
⁴Physical Chemistry Division, Department of Chemistry, Ångström Laboratory, Uppsala University, 75120 Uppsala, Sweden.
⁵Department of Chemistry, Qena Faculty of Science, South Valley University, 83523 Qena, Egypt.
⁶Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland.
⁷Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

↵*Corresponding author. Email: elbastos{at}iq.usp.br

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Science Advances 03 Apr 2020:
Vol. 6, no. 14, eaaz0421
DOI: 10.1126/sciadv.aaz0421

B. C. Freitas-Dörr

1Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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C. O. Machado

1Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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ORCID record for C. O. Machado

A. C. Pinheiro

1Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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ORCID record for A. C. Pinheiro

A. B. Fernandes

1Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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F. A. Dörr

2Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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E. Pinto

2Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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M. Lopes-Ferreira

3Immunoregulation Unit of the Special Laboratory of Applied Toxinology (Center for Toxins, Immune-Response and Cell Signaling/CEPID/FAPESP), Butantan Institute, 05503-900 São Paulo, SP, Brazil.

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M. Abdellah

4Physical Chemistry Division, Department of Chemistry, Ångström Laboratory, Uppsala University, 75120 Uppsala, Sweden.

5Department of Chemistry, Qena Faculty of Science, South Valley University, 83523 Qena, Egypt.

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J. Sá

4Physical Chemistry Division, Department of Chemistry, Ångström Laboratory, Uppsala University, 75120 Uppsala, Sweden.

6Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland.

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L. C. Russo

7Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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F. L. Forti

7Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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L. C. P. Gonçalves

1Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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E. L. Bastos

1Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05508-000 São Paulo, SP, Brazil.

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For correspondence: elbastos@iq.usp.br

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RE: BeetBlue for fabric dyeing
- Jody Grossman, Teacher, Potomac Crescent Waldorf School
(21 April 2020)

Dear Researchers,

I read about your recent discovery in today's Washington Post. Congratulations on this advance in creating a beautiful blue dye. I am tantalized by your belief that it will be possible to reproduce your results with readily available materials--beets and ____. I am a fabric dyer and I would love to use this "recipe" for dyeing silk and wool.
I hope to learn more about creating this lovely new color.
Warm regards,
Jody Grossman

Competing Interests: None declared.

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A metal-free blue chromophore derived from plant pigments

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