Photoluminescence Properties of Poly (Ethylene Glycol) Passivated Carbon Dots from Cassava Peels


Mail Permono Adi Putro(1*)
Mail Liszulfah Roza(2)
Mail Isnaeni Isnaeni(3)

(1) University of Muhammadiyah Prof. Dr. Hamka, Indonesia
(2) University of Muhammadiyah Prof. Dr. Hamka, Indonesia
(3) Indonesia Institute of Science, Indonesia
(*) Corresponding Author
10.31002/ijose.v3i2.1209| Abstract views : 190 | PDF views : 0


Carbon dots (C-dots) is a new type of luminescense nanoparticles that can be synthesized easily from natural sources, such as cassava peels. C-dots has been synthesized from cassava peels based green synthesis using low temperature. The surface of C-dots was passivated by poly(ethylene glycol) (PEG) with variations in volume from 0.5 ml, 1 ml, and 1.5 ml. Luminescense properties before and after passivasive with PEG characterized using photoluminescense (PL) and time resolved photoluminescence (TRPL) spectrophotometer. Peak wavelength spectrum of PL shows a red shift when 0.5 ml PEG was added. However, when the addition of PEG increases, peak wavelength spectrum of PL shows a blue shift. PL intensity decreased along with increasing of PEG volume. PL intensity influenced C-dots electron time decay linearly. C-dots electron time decay increased along with decreased of PL intensity. This results assigned potency that C-dots in water solution can be applied as bioimaging and metal ion and salt biosensing. however, it needs extra optical measurements to support our discovery.

Keywords: cassava peels, C-dots, electron time decay, FL intensity, PEG

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DOI: http://dx.doi.org/10.31002/ijose.v3i2.1209

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Indonesian Journal of Science and Education is licensed under a Creative Commons Attribution 4.0 International License.Copyright © Universitas Tidar. All rights reserved. p-ISSN2598-5213, e-ISSN 2598-5205  View my Stat