Single-Walled Carbon Nanotube/Metalloporphyrin Composites for the Chemiresistive Detection of Amines and Meat Spoilage

Chemiresistive detectors for amine vapors were made from single‐walled carbon nanotubes by noncovalent modification with cobalt meso‐arylporphyrin complexes. We show that through changes in the oxidation state of the metal, the electron‐withdrawing character of the porphyrinato ligand, and the count...

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Published inAngewandte Chemie International Edition Vol. 54; no. 22; pp. 6554 - 6557
Main Authors Liu, Sophie F., Petty, Alexander R., Sazama, Graham T., Swager, Timothy M.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 26.05.2015
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
EditionInternational ed. in English
Subjects
Amines
Amines - analysis
Animals
Cadaverine - analysis
carbon nanotubes
Chickens
Cobalt
Cobalt - chemistry
Electric Conductivity
Fish
Gases - analysis
Meat
Meat - analysis
Meat - microbiology
Metalloporphyrins - chemistry
Nanotechnology
Nanotubes
Nanotubes, Carbon - chemistry
porphyrinoids
Putrescine - analysis
Salmon
Seafood - analysis
Seafood - microbiology
sensors
Swine
Thermodynamics
Vapors
amines
porphyrinoids
cobalt
sensors
carbon nanotubes
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Summary:Chemiresistive detectors for amine vapors were made from single‐walled carbon nanotubes by noncovalent modification with cobalt meso‐arylporphyrin complexes. We show that through changes in the oxidation state of the metal, the electron‐withdrawing character of the porphyrinato ligand, and the counteranion, the magnitude of the chemiresistive response to ammonia could be improved. The devices exhibited sub‐ppm sensitivity and high selectivity toward amines as well as good stability to air, moisture, and time. The application of these chemiresistors in the detection of various biogenic amines (i.e. putrescine, cadaverine) and in the monitoring of spoilage in raw meat and fish samples (chicken, pork, salmon, cod) over several days was also demonstrated. Dead meat: Chemiresistive detectors for amines were created from single‐walled carbon nanotubes by noncovalent modification with Co meso‐arylporphyrins. The devices demonstrated sub‐ppm sensitivity and high selectivity toward amines. The use of the detectors to monitor meat spoilage was also demonstrated. −ΔG/G0=change in conductance upon exposure to meat.
Bibliography:ArticleID:ANIE201501434
ark:/67375/WNG-B1CJ6BG6-R
Graduate Research Fellowship - No. 1122374
National Science Foundation - No. DMR-1410718
Army Research Office
istex:7F5097E4687D1521C8401129BC1F8881AE9EF468
This work was supported by the National Science Foundation (DMR-1410718) and Graduate Research Fellowship under Grant No. 1122374 as well as the Army Research Office through the Institute for Soldier Nanotechnologies. We thank Dr. J. J. Walish for fabricating the PTFE device holder, Dr. J. M. Falkowski for assistance with electrochemistry, J. F. Fennell for Raman spectroscopic measurements, Dr. P. Müller for X-ray crystal structure refinement assistance, and J. M. Azzarelli for providing fish samples.
This work was supported by the National Science Foundation (DMR‐1410718) and Graduate Research Fellowship under Grant No. 1122374 as well as the Army Research Office through the Institute for Soldier Nanotechnologies. We thank Dr. J. J. Walish for fabricating the PTFE device holder, Dr. J. M. Falkowski for assistance with electrochemistry, J. F. Fennell for Raman spectroscopic measurements, Dr. P. Müller for X‐ray crystal structure refinement assistance, and J. M. Azzarelli for providing fish samples.
ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201501434