Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Bioinspired Cyclic Dipeptide Functionalized Nanofibers for Thermal Sensing and Energy Harvesting

Daniela Santos
,
Rosa M. F. Baptista
* ,
Adelino Handa
,
Bernardo Almeida
,
Pedro V. Rodrigues
ORCID logo ,
Ana R. Torres
,
Ana Machado
,
Michael Belsley
ORCID logo ,
Etelvina De Matos Gomes
Version 1 : Received: 20 February 2023 / Approved: 22 February 2023 / Online: 22 February 2023 (02:03:20 CET)

A peer-reviewed article of this Preprint also exists.

Santos, D.; Baptista, R.M.F.; Handa, A.; Almeida, B.; Rodrigues, P.V.; Torres, A.R.; Machado, A.; Belsley, M.; de Matos Gomes, E. Bioinspired Cyclic Dipeptide Functionalized Nanofibers for Thermal Sensing and Energy Harvesting. Materials 2023, 16, 2477. Santos, D.; Baptista, R.M.F.; Handa, A.; Almeida, B.; Rodrigues, P.V.; Torres, A.R.; Machado, A.; Belsley, M.; de Matos Gomes, E. Bioinspired Cyclic Dipeptide Functionalized Nanofibers for Thermal Sensing and Energy Harvesting. Materials 2023, 16, 2477.

DOI: https://doi.org/10.3390/ma16062477

Abstract

Nanostructured dipeptide self-assemblies exhibiting quantum confinement are of great interest due to their potential applications in the field of materials science as optoelectronic materials for energy harvesting devices. Among those, aromatic cyclo-dipeptides containing the amino acid tryptophan are wide-band gap semiconductors displaying high mechanical rigidity, photoluminescence and piezoelectric properties to be used in power generation. In this work, we report the fabrication of hybrid systems based on chiral cyclo-dipeptide L-Tryptophan- L-Tryptophan incorporated into biopolymer electrospun fibers. The micro/nanofibers contain self-assembled nanospheres embedded into the polymer matrix are wide-band gap semiconductors (gap energy 3.8 eV), display blue photoluminescence and relevant piezoelectric and pyroelectric properties with coefficients as high as 57 pCN-1 and 35×10-6 Cm-2k-1, respectively. They are therefore promise systems for thermal sensing and energy harvesting applications.

Keywords

cyclic dipeptides; biopolymers; electrospinning; photoluminescence; nanofibers; energy harvesting

Subject

MATERIALS SCIENCE, Nanotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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