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Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing. / Al-Galiby, Qusiy; Grace, Iain; Sadeghi, Hatef et al.
In: Journal of Materials Chemistry C, Vol. 3, No. 9, 07.03.2015, p. 2101-2106.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Al-Galiby, Q, Grace, I, Sadeghi, H & Lambert, CJ 2015, 'Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing', Journal of Materials Chemistry C, vol. 3, no. 9, pp. 2101-2106. https://doi.org/10.1039/C4TC02897J

APA

Al-Galiby, Q., Grace, I., Sadeghi, H., & Lambert, C. J. (2015). Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing. Journal of Materials Chemistry C, 3(9), 2101-2106. https://doi.org/10.1039/C4TC02897J

Vancouver

Al-Galiby Q, Grace I, Sadeghi H, Lambert CJ. Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing. Journal of Materials Chemistry C. 2015 Mar 7;3(9):2101-2106. Epub 2015 Jan 9. doi: 10.1039/C4TC02897J

Author

Al-Galiby, Qusiy ; Grace, Iain ; Sadeghi, Hatef et al. / Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing. In: Journal of Materials Chemistry C. 2015 ; Vol. 3, No. 9. pp. 2101-2106.

Bibtex

@article{f942698bf89a4c0fb1f5a534a8783cc2,
title = "Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing",
abstract = "We demonstrate the potential of perylene bisimide (PBI) for label-free sensing of organic molecules by investigating the change in electronic properties of five symmetric and asymmetric PBI derivatives, which share a common backbone, but are functionalised with various bay-area substituents. Density functional theory was combined with a Greens function scattering approach to compute the electrical conductance of each molecule attached to two gold electrodes by pyridyl anchor groups. We studied the change in their conductance in response to the binding of three analytes, namely TNT, BEDT-TTF and TCNE, and found that the five different responses provided a unique fingerprint for the discriminating sensing of each analyte. This ability to sense and discriminate was a direct consequence of the extended π system of the PBI backbone, which strongly binds the analytes, combined with the different charge distribution of the five PBI derivatives, which leads to a unique electrical response to analyte binding.",
author = "Qusiy Al-Galiby and Iain Grace and Hatef Sadeghi and Lambert, {Colin J.}",
year = "2015",
month = mar,
day = "7",
doi = "10.1039/C4TC02897J",
language = "English",
volume = "3",
pages = "2101--2106",
journal = "Journal of Materials Chemistry C",
issn = "2050-7526",
publisher = "Royal Society of Chemistry",
number = "9",

}

RIS

TY - JOUR

T1 - Exploiting the extended π-system of perylene bisimide for label-free single-molecule sensing

AU - Al-Galiby, Qusiy

AU - Grace, Iain

AU - Sadeghi, Hatef

AU - Lambert, Colin J.

PY - 2015/3/7

Y1 - 2015/3/7

N2 - We demonstrate the potential of perylene bisimide (PBI) for label-free sensing of organic molecules by investigating the change in electronic properties of five symmetric and asymmetric PBI derivatives, which share a common backbone, but are functionalised with various bay-area substituents. Density functional theory was combined with a Greens function scattering approach to compute the electrical conductance of each molecule attached to two gold electrodes by pyridyl anchor groups. We studied the change in their conductance in response to the binding of three analytes, namely TNT, BEDT-TTF and TCNE, and found that the five different responses provided a unique fingerprint for the discriminating sensing of each analyte. This ability to sense and discriminate was a direct consequence of the extended π system of the PBI backbone, which strongly binds the analytes, combined with the different charge distribution of the five PBI derivatives, which leads to a unique electrical response to analyte binding.

AB - We demonstrate the potential of perylene bisimide (PBI) for label-free sensing of organic molecules by investigating the change in electronic properties of five symmetric and asymmetric PBI derivatives, which share a common backbone, but are functionalised with various bay-area substituents. Density functional theory was combined with a Greens function scattering approach to compute the electrical conductance of each molecule attached to two gold electrodes by pyridyl anchor groups. We studied the change in their conductance in response to the binding of three analytes, namely TNT, BEDT-TTF and TCNE, and found that the five different responses provided a unique fingerprint for the discriminating sensing of each analyte. This ability to sense and discriminate was a direct consequence of the extended π system of the PBI backbone, which strongly binds the analytes, combined with the different charge distribution of the five PBI derivatives, which leads to a unique electrical response to analyte binding.

U2 - 10.1039/C4TC02897J

DO - 10.1039/C4TC02897J

M3 - Journal article

VL - 3

SP - 2101

EP - 2106

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

SN - 2050-7526

IS - 9

ER -