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Light emitting silica nanostructures by surface functionalization of diatom algae shells with a triethoxysilane-functionalized π-conjugated fluorophore

Published online by Cambridge University Press:  22 December 2015

Danilo Vona ,
Marco Lo Presti ,
Stefania Roberta Cicco ,
Fabio Palumbo ,
Roberta Ragni  and
Gianluca Maria Farinola
Danilo Vona
Affiliation:
Dipartimento di Chimica, Università degli Studi di Bari, Via Orabona 4, 70126 Bari, Italy.
Marco Lo Presti
Affiliation:
Dipartimento di Chimica, Università degli Studi di Bari, Via Orabona 4, 70126 Bari, Italy.
Stefania Roberta Cicco
Affiliation:
CNR-ICCOM, Via Orabona 4, 70126 Bari, Italy.
Fabio Palumbo
Affiliation:
CNR-NANOTECH, Via Orabona 4, 70126 Bari, Italy.
Roberta Ragni*
Affiliation:
Dipartimento di Chimica, Università degli Studi di Bari, Via Orabona 4, 70126 Bari, Italy.
Gianluca Maria Farinola
Affiliation:
Dipartimento di Chimica, Università degli Studi di Bari, Via Orabona 4, 70126 Bari, Italy.
*
*email address: roberta.ragni@uniba.it
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Abstract

The functionalization of biosilica shells (frustules) of diatoms microalgae with a tailored luminescent molecule is a convenient, scalable and biotechnological approach for obtaining new light emitting silica nanostructures with promising applications in photonics. In particular, here we report the synthesis of a red emitting organic fluorophore and its covalent linking to the surface of mesoporous biosilica extracted from Thalassiosira weissflogii diatoms cultured in our laboratories. The organic dye has a conjugated skeleton composed of thienyl, benzothiadiazolyl and phenyl units and a peripheral triethoxysilyl group which enables its stable binding onto the frustules surface. The protocol to extract the biosilica shells from living diatoms preserving their natural ornate nanostructured morphology is also discussed.

Keywords

biomaterialluminescencenanostructure

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Type
Articles
Information
MRS Advances , Volume 1 , Issue 57: Biomaterials and Soft Materials , 2016 , pp. 3817 - 3823
Copyright
Copyright © Materials Research Society 2015 

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References

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