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REVISTA DE CHIMIE
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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2020, Volume 71, Issue 8, 106-112

https://doi.org/10.37358/RC.20.8.8285

Adin Hasrudin, Zaenal Abidin, Nurul Hiedayati, Vicky Prajaputra

Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator

Abstract:

Caesalpinia sappan L., known as sappan wood, has been extensively explored by many researchers because it contains various structural types of phenolic compounds. This study objectives are to investigate the effect of pH on the flourescent color of carbon dots (CDs) from sappan wood and its application as an acid-base indicator under UV light for the first time. CDs were synthesized through the hydrothermal route in ethanol solvents. The synthesized CDs were further characterized by UV-Vis spectrophotometry, fluorescence and Fourier Transform Infrared (FT-IR) spectroscopy. Based on the results, CD solutions performed multiple flourescent colors (yellow, orange and green) under UV light at 365 nm when the pH was adjusted to be 1, 3, 5, 7, 9 and 11. These multiple colors were produced because of the instability of phenolic compounds in the sample, especially brazilin which was easily oxidized to brazilein in alkaline condition. According to the FT-IR spectra, the most prominent differences of the sample before and after the treatment process was observed in the peak region ranging from 1500-1700 cm-1. The characteristic band of carbonyl groups was identified at 1697 cm-1 in the treated sample (pH 9), but it was unobserved in the spectrum of sappan wood and the treated sample (pH 5). The presence of carbonyl group can be assumed that brazilin has been oxidized to brazilein after the alkaline treatment process and making the flourescent color was gradually shifted from yellow to green. Under normal light, the sappan wood’s extract and CD solution produced yellow and red colors in acidic and alkaline conditions, respectively. However, only CD solutions which have yellow, orange and green emissions in different pH conditions under UV light. Therefore, the synthesized CDs can be used as an acid-base indicator in both different light conditions.
Keywords:
absorption; brazilin; brazilein; emission; materials

Issue: 2020, Volume 71, Issue 8
Pages: 106-112
Publication date: 2020/8/31
https://doi.org/10.37358/RC.20.8.8285
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Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
HASRUDIN, A., ABIDIN, Z., HIEDAYATI, N., PRAJAPUTRA, V., Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator, Rev. Chim., 71(8), 2020, 106-112.

Vancouver
Hasrudin A, Abidin Z, Hiedayati N, Prajaputra V. Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator. Rev. Chim.[internet]. 2020 Aug;71(8):106-112. Available from: https://doi.org/10.37358/RC.20.8.8285


APA 6th edition
Hasrudin, A., Abidin, Z., Hiedayati, N. & Prajaputra, V. (2020). Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator. Revista de Chimie, 71(8), 106-112. https://doi.org/10.37358/RC.20.8.8285


Harvard
Hasrudin, A., Abidin, Z., Hiedayati, N., Prajaputra, V. (2020). 'Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator', Revista de Chimie, 71(8), pp. 106-112. https://doi.org/10.37358/RC.20.8.8285


IEEE
A. Hasrudin, Z. Abidin, N. Hiedayati, V. Prajaputra, "Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator". Revista de Chimie, vol. 71, no. 8, pp. 106-112, 2020. [online]. https://doi.org/10.37358/RC.20.8.8285


Text
Adin Hasrudin, Zaenal Abidin, Nurul Hiedayati, Vicky Prajaputra,
Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator,
Revista de Chimie,
Volume 71, Issue 8,
2020,
Pages 106-112,
ISSN 2668-8212,
https://doi.org/10.37358/RC.20.8.8285.
(https://revistadechimie.ro/Articles.asp?ID=8285)
Keywords: absorption; brazilin; brazilein; emission; materials


RIS
TY - JOUR
T1 - Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator
A1 - Hasrudin, Adin
A2 - Abidin, Zaenal
A3 - Hiedayati, Nurul
A4 - Prajaputra, Vicky
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2020
VL - 71
IS - 8
SP - 106
EP - 112
UR - https://doi.org/10.37358/RC.20.8.8285
KW - absorption
KW - brazilin
KW - brazilein
KW - emission
KW - materials
ER -


BibTex
@article{RevCh2020P106,
author = {Hasrudin Adin and Abidin Zaenal and Hiedayati Nurul and Prajaputra Vicky},
title = {Hydrothermal Synthesis of Multi-Color Fluorescent Carbon Dots from Sappan Wood (Caesalpinia sappan) as an Acid-Base Indicator},
journal = {Revista de Chimie},
volume = {71},
number = {8},
pages = {106-112},
year = {2020},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.20.8.8285},
url = {https://revistadechimie.ro/Articles.asp?ID=8285}
}
 
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