Vol. 22 No. 3 (2017), Chemistry
Vol. 22 No. 3 (2017)

Study of the fluorescence quenching of 1-hydroxypyrene-3,6,8-trisulfonic acid by single-walled carbon nanotubes

Chemistry
Published 2017-10-26
john castillo
School of chemistry, research group in Biochemistry and Microbiology (GIBIM), Universidad Industrial de Santander, Bucaramanga, Colombia
http://orcid.org/0000-0002-6751-2305
Herminsul Cano
School of chemistry, research group in theoretical and experimental physicochemistry (GIFTEX), Universidad Industrial de Santander, Bucaramanga, Colombia.
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Keywords

Single-walled carbon nanotubes
Static quenching
Fluorescence
1-hydroxypyrene-3
6
8-trisulfonic acid.

How to Cite

Study of the fluorescence quenching of 1-hydroxypyrene-3,6,8-trisulfonic acid by single-walled carbon nanotubes. (2017). Universitas Scientiarum, 22(3), 201-214. https://doi.org/10.11144/Javeriana.SC22-2.sotf
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Abstract

This paper presents a study of the fluorescence quenching of 1-hydroxypyrene-3,6,8-trisulfonic acid (HPTS) in the presence of single-walled carbon nanotubes (SWCNT) using a fluorescence method. To investigate the quenching mechanism (dynamic or static) of HPTS, Stern-Volmer plots of single walled carbon nanotubes at different temperatures were used. The positive deviation from linearity in Stern-Volmer plots suggests that single walled carbon nanotubes follow a static quenching mechanism evidenced by the formation of a stable ground state complex. The results presented here help us to clarify the quenching mechanism in the interaction of a pyrene derived dye and carbon nanotubes. This study will open new possibilities in the use of the conjugate formed by SWCNTs and HPTS in the fabrication of a
biosensor based on intracellular fluorescent probes.
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