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Functionalization of Carbon Nanotubes With a pH-responsive Molecule to Produce a pH Sensor

Liping Zhao, Tomonobu Nakayama, Hiroyuki Tomimoto, Yoshitaka Shingaya, Qing Huang

Nanotechnology. 2009 Aug 12;20(32):325501.

PMID: 19620767

Abstract:

Carbon nanotubes were functionalized with the ratiometric pH-responsive dye molecule 6,8-dihydroxy-1,3-pyrenedisulfonic acid disodium salt, which enabled them to indicate pH values over the range of pH 5.6-8.3. The nanotubes were coated with a layer of electron-donating ZnPc, which strengthened the CNT-dye interaction. The range of pH response is relevant for biological systems, which makes the nanotubes suitable for a wide range of applications within nanobiotechnology.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP61255638 6,8-Dihydroxy-1,3-pyrenedisulfonic acid disodium salt 6,8-Dihydroxy-1,3-pyrenedisulfonic acid disodium salt 61255-63-8 Price
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