Low-temperature photoluminescence in self-assembled diphenylalanine microtubes / Nikitin T.,Kopyl S.,Shur V. Ya,Kopelevich Y. V.,Kholkin A. L. // PHYSICS LETTERS A. - 2016. - V. 380, l. 18-19. - P. 1658-1662.

ISSN/EISSN:

0375-9601 / 1873-2429

Type:

Article

Abstract:

Bioinspired self-assembled structures are increasingly important for a variety of applications ranging from drug delivery to electronic and energy harvesting devices. An important class of these structures is diphenylalanine microtubes which are potentially important for optical applications including light emitting diodes and optical biomarkers. In this work we present the data on their photoluminescent properties at low temperatures (down to 12 K) and discuss the origin of the emission in the near ultraviolet (UV) range seen earlier in a number of reports. UV luminescence increases with decreasing temperature and exhibits several equidistant lines that are assigned to zero-phonon exciton emission line and its phonon replicas. We infer that the exciton is localized on the defect sites and significant luminescence decay is due to thermal quenching arising from the carrier excitation from these defects and non-radiative recombination. (C) 2016 Elsevier B.V. All rights reserved.

Author keywords:

Diphenylalanine; Self-assembly; Photoluminescence; Exciton PEPTIDE NANOTUBES; NANOSTRUCTURES; NANOMATERIALS; NANOWIRES

DOI:

10.1016/j.physleta.2016.02.043

Web of Science ID:

ISI:000373552000014

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR 22
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-2429
Keywords-Plus	PEPTIDE NANOTUBES; NANOSTRUCTURES; NANOMATERIALS; NANOWIRES
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	kopel@ifi.unicamp.br kholkin@gmail.com
ResearcherID-Numbers	Kholkin, Andrei/G-5834-2010 Nikitin, Timur/K-1463-2014 Kopyl, Svitlana/J-4871-2013 Inst. of Physics, Gleb Wataghin/A-9780-2017 Shur, Vladimir/J-9078-2015
ORCID-Numbers	Kholkin, Andrei/0000-0003-3432-7610 Nikitin, Timur/0000-0002-0907-5936 Kopyl, Svitlana/0000-0003-3347-8628
Funding-Acknowledgement	Russian Scientific Foundation {[}14-12-00812]; FCT/MEC {[}FCT UID/CTM/50011/2013]; FEDER
Funding-Text	The research was made possible by Russian Scientific Foundation (Grant 14-12-00812). The authors wish to thank Alexandre Botas, and Profs. Rute Ferreira and Luis Carlos for the help with photoluminescence measurements and fruitful discussions. Part of this work was developed in the scope of the project CICECO - Aveiro Institute of Materials (Ref. FCT UID/CTM/50011/2013), financed by national funds through the FCT/MEC and, when applicable, co-financed by FEDER under the PT2020 Partnership Agreement.
Number-of-Cited-References	33
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	30
Journal-ISO	Phys. Lett. A
Doc-Delivery-Number	DI5PV