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In vivo doped biosilica from living Thalassiosira weissflogii diatoms with a triethoxysilyl functionalized red emitting fluorophore

Published online by Cambridge University Press:  18 January 2018

M. Lo Presti*
Affiliation:
Dipartimento di Chimica, Università. degli Studi di Bari “Aldo Moro”. Via Orabona, 4, 70126Bari, Italy.
R. Ragni
Affiliation:
Dipartimento di Chimica, Università. degli Studi di Bari “Aldo Moro”. Via Orabona, 4, 70126Bari, Italy.
D. Vona
Affiliation:
Dipartimento di Chimica, Università. degli Studi di Bari “Aldo Moro”. Via Orabona, 4, 70126Bari, Italy.
G. Leone
Affiliation:
Dipartimento di Chimica, Università. degli Studi di Bari “Aldo Moro”. Via Orabona, 4, 70126Bari, Italy.
S. Cicco
Affiliation:
CNR ICCOM, Via Orabona, 4, 70126Bari, Italy
G. M. Farinola
Affiliation:
Dipartimento di Chimica, Università. degli Studi di Bari “Aldo Moro”. Via Orabona, 4, 70126Bari, Italy.
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Abstract

Diatoms microalgae represent a natural source of highly porous biosilica shells (frustules) with promising applications in a wide range of technological fields. Functionalization of diatoms’ frustules with tailored luminescent molecules can be envisaged as a convenient, scalable biotechnological route to new light emitting silica nanostructured materials. Here we report a straightforward protocol for the in vivo modification of Thalassiosira weissflogii diatoms’ frustules with a red emitting organic dye based on thienyl, benzothiadiazolyl and phenyl units. The metabolic insertion of the dye molecules into the diatoms shells, combined with an acidic-oxidative isolation protocol of the resulting dye stained biosilica, represents a novel strategy to develop highly porous luminescent biosilica nanostructures with promising applications in photonics.

Type
Articles
Copyright
Copyright © Materials Research Society 2018 

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References

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