Detection limit of biomarkers using the near-infrared band-gap fluorescence of single-walled carbon nanotubes

A photovoltaic photodetector harnessing near infrared band gap absorption by thin films of post-synthetically sorted semiconducting single walled carbon nanotubes ( s -SWCNTs) is described. Peak specific detectivity of 6×1011 Jones at -0.1 V bias at 1210 nm is achieved using a heterojunction device architecture: indium tin oxide/ ca. 5 nm s -SWCNT / 120 nm C60 / 10 nm 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) / Ag. The photodiodes are characterized by a series resistance of 2.9 Ω cm2 and a rectification ratio of 104 at ±1V. These results are expected to guide the exploration of new classes of solution-processable, mechanically flexible, integrable, thin film photovoltaic photodetectors with tunable sensitivity in the visible and infrared spectra based on semiconducting carbon nanotubes.

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Near-Infrared Fluorescence Microscopy of Single-Walled Carbon Nanotubes in Phagocytic Cells

Journal of the American Chemical Society ◽

10.1021/ja0466311 ◽

2004 ◽

Vol 126 (48) ◽

pp. 15638-15639 ◽

Cited By ~ 609

Author(s):

Paul Cherukuri ◽

Sergei M. Bachilo ◽

Silvio H. Litovsky ◽

R. Bruce Weisman

Keyword(s):

Carbon Nanotubes ◽

Fluorescence Microscopy ◽

Near Infrared ◽

Single Walled Carbon Nanotubes ◽

Phagocytic Cells ◽

Near Infrared Fluorescence ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

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In vivo biosensing via tissue-localizable near-infrared-fluorescent single-walled carbon nanotubes

Nature Nanotechnology ◽

10.1038/nnano.2013.222 ◽

2013 ◽

Vol 8 (11) ◽

pp. 873-880 ◽

Cited By ~ 206

Author(s):

Nicole M. Iverson ◽

Paul W. Barone ◽

Mia Shandell ◽

Laura J. Trudel ◽

Selda Sen ◽

...

Keyword(s):

Carbon Nanotubes ◽

Near Infrared ◽

Single Walled Carbon Nanotubes ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes

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Enhancing near-infrared photoluminescence from single-walled carbon nanotubes by defect-engineering using benzoyl peroxide

Scientific Reports ◽

10.1038/s41598-020-76716-9 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Lukasz Przypis ◽

Maciej Krzywiecki ◽

Yoshiaki Niidome ◽

Haruka Aoki ◽

Tomohiro Shiraki ◽

...

Keyword(s):

Carbon Nanotubes ◽

Conjugated Polymers ◽

Near Infrared ◽

Light Emission ◽

Single Walled Carbon Nanotubes ◽

Organic Radical ◽

Defect Engineering ◽

Single Walled Carbon ◽

Walled Carbon Nanotubes ◽

Selection Of

AbstractSingle-walled carbon nanotubes (SWCNTs) have been modified with ester groups using typical organic radical chemistry. Consequently, traps for mobile excitons have been created, which enhanced the optical properties of the material. The proposed methodology combines the benefits of mainstream approaches to create luminescent defects in SWCNTs while it simultaneously avoids their limitations. A step change was achieved when the aqueous medium was abandoned. The selection of an appropriate organic solvent enabled much more facile modification of SWCNTs. The presented technique is quick and versatile as it can engage numerous reactants to tune the light emission capabilities of SWCNTs. Importantly, it can also utilize SWCNTs sorted by chirality using conjugated polymers to enhance their light emission capabilities. Such differentiation is conducted in organic solvents, so monochiral SWCNT can be directly functionalized using the demonstrated concept in the same medium without the need to redisperse the material in water.

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