Room temperature amine sensors enabled by sidewall functionalization of single-walled carbon nanotubes

RSC Advances
Clara PaolettiAndrea Pucci

Abstract

A new series of sidewall modified single-walled carbon nanotubes (SWCNTs) with perfluorophenyl molecules bearing carboxylic acid or methyl ester moieties are herein reported. Pristine and functionalized SWCNTs (p-SWCNTs and f-SWCNTs, respectively) were characterized by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and scanning electron microscopy (SEM). The nitrene-based functionalization provided intact SWCNTs with methyl 4-azido-2,3,5,6-tetrafluorobenzoate (SWCNT-N-C6F4CO2CH3) and 4-azido-2,3,5,6-tetrafluorobenzoic acid (SWCNT-N-C6F4CO2H) attached every 213 and 109 carbon atoms, respectively. Notably, SWCNT-N-C6F4CO2H was sensitive in terms of the percentage of conductance variation from 5 to 40 ppm of ammonia (NH3) and trimethylamine (TMA) with a two-fold higher variation of conductance compared to p-SWCNTs at 40 ppm. The sensors are highly sensitive to NH3 and TMA as they showed very low responses (0.1%) toward 200 ppm of volatile organic compounds (VOCs) containing various functional groups representative of different classes of analytes such as benzene, tetrahydrofurane (THF), hexane, ethyl acetate (AcOEt), ethanol, acetonitrile (CH3CN), acetone and chloroform (CHCl3). Our system is a promising candidate for ...Continue Reading

References

Feb 19, 2002·Chemical Reviews·P. M. Ajayan
Aug 6, 2002·Science·Ray H BaughmanWalt A de Heer
Jul 26, 2008·Nature Nanotechnology·Raymond W FriddleAleksandr Noy
Jan 7, 2010·Analytical and Bioanalytical Chemistry·Kevin A WepasnickD Howard Fairbrother
Dec 14, 2011·Sensors·Li-Chun WangChang-Ping Chang
Feb 22, 2012·Sensors·Alphus D Wilson, Manuela Baietto
Nov 25, 2014·ACS Applied Materials & Interfaces·Er-Xia ChenJian Zhang
Dec 10, 2014·Proceedings of the National Academy of Sciences of the United States of America·Joseph M AzzarelliTimothy M Swager
Feb 6, 2017·Biosensors & Bioelectronics·P SalvoF Di Francesco
Feb 17, 2017·International Journal of Nanomedicine·Pietro SalvoMarco Romanelli
Apr 20, 2017·Sensors·Ruixian TangLiangming Wei
Nov 5, 2001·Angewandte Chemie·Michael HolzingerFrank Jellen

❮ Previous
Next ❯

Citations

Apr 10, 2019·Polymers·Rodrigo Araya-HermosillaFrancesco Picchioni
Jan 23, 2021·Sensors·Muthaiah Shellaiah, Kien Wen Sun
Sep 20, 2018·ACS Applied Materials & Interfaces·Bora YoonGary F Walsh
Oct 2, 2019·ACS Sensors·Maggie HeTimothy M Swager
Sep 19, 2018·Chemical Reviews·Vera SchroederTimothy M Swager

❮ Previous
Next ❯

Methods Mentioned

BETA
quartz crystal microbalance
X-ray
scanning electron microscopy
NMR
thermal treatment

Software Mentioned

PSTrace
Image Tool

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.