A fundamental study of photoluminescence modulation from DNA-wrapped single-walled carbon nanotubes.

Shusuke Oura, Masahiro Ito, Yoshikazu Homma, Kazuo Umemura

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In one paragraph

Article in European biophysics journal : EBJ, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Shusuke OuraDepartment of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 1628601, Japan. 1216704@ed.tus.ac.jp.

Masahiro ItoDepartment of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 1628601, Japan.

Yoshikazu HommaDepartment of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 1628601, Japan.

Kazuo UmemuraDepartment of Physics, Graduate School of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo, 1628601, Japan.

Funding

Japan Society for the Promotion of Science 26400436

6 · The paper itself

Abstract

In this study, we investigated the interaction of base sequence-assigned single-stranded DNA (ssDNA) molecules with the surfaces of single-walled carbon nanotube (SWNT)-thymine (T30)/cytosine (C30) hybrids (T30/C30-SWNT), by measuring the modulation of near-infrared (NIR) photoluminescence (PL). Significant PL shifts were observed when T30/C30-SWNTs were reacted with 30-mers of adenine (A30)/guanine (G30). In contrast, when non-complementary ssDNA was used, no significant energy shift was observed in the PL modulation except when T30-SWNTs were reacted with G30. Furthermore, atomic force microscopy (AFM) measurements revealed that the average heights of the T30-SWNTs and C30-SWNTs, after reaction with A30 were 2 ± 0.6 and 1.1 ± 0.3 nm, respectively. This result was in good agreement with the results of PL measurements. Our data reveal that DNA hybridization could be detected by measuring PL from SWNTs, without the use of fluorescent molecules. This leads to the possibility of developing nanotube-based photoelectric conversion or optical switch devices driven by organic molecules.

Indexed as

CytosineDNA, Single-StrandedLuminescent MeasurementsNanotubes, CarbonThymineCytosineDNA, Single-StrandedNanotubes, CarbonThymineAtomic force microscopyDNAFluorescencePhotoluminescenceSingle-walled carbon nanotube

Identifiers

PMID29159501

DOI10.1007/s00249-017-1269-8

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.