Molecular detection apparatus, molecular detection method, and molecular detector

Patent metadata

Field	Value
Publication number	US-10677770-B2
Application number	US-201715436092-A
Country	US
Kind code	B2
Filing date	Feb 17, 2017
Priority date	Sep 20, 2016
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

A molecular detection apparatus 1 according to an embodiment includes: a collection unit collecting detection target gas containing molecules to be detected; a detector including a detection cell having an organic probe provided at a sensor unit, the organic probe capturing the collected molecule to be detected; and a discriminator discriminating the molecule to be detected by a detection signal generated by the molecule being captured by the organic probe. The detection cell has the organic probe containing a phosphonic acid structure or phosphoric acid structure.

First claim

What is claimed is:

1. A molecular detection apparatus, comprising:
a detector including a detection cell having a sensor unit and an organic probe disposed at the sensor unit and capturing a molecule to be detected,
wherein the sensor unit comprises a field effect transistor including a graphene layer, and a source electrode and a drain electrode both connected to the graphene layer,
the organic probe is provided on the graphene layer, and is comprised of an organic compound including a head portion having an aromatic hydrocarbon group containing a phosphonate group which has a hydroxy group as a reactive group with respect to the molecule or a phosphate group which has a hydroxy group as a reactive group with respect to the molecule, a base portion having a polycyclic aromatic hydrocarbon group, and a connecting portion having a single bond or an organic group connecting the head portion and the base portion, and
the organic compound comprises at least one selected from the group consisting of the following compound (2A), compound (2B), compound (2C), and compound (2D):

2. The molecular detection apparatus of claim 1 , wherein
the detector includes a plurality of the detection cells having a plurality of the sensor units, a first organic probe same as the organic probe, and a second organic probe different from the organic probe, the first organic probe being provided on at least one of the plurality of the sensor units, and the second organic probe being provided on an other one of the plurality of the sensor units.

3. The molecular detection apparatus of claim 2 , wherein
a plurality of organic probes containing the first and second organic probes are different in bond strength with the molecule to be detected.

4. The molecular detection apparatus of claim 1 , wherein the molecule to be detected contains a nitro compound molecule.

5. A molecular detector, comprising:
a sensor unit including a field effect transistor having a graphene layer and a source electrode and a drain electrode both connected to the graphene layer; and
an organic probe provided at the graphene layer of the sensor unit and which is comprised of an organic compound including a head portion having an aromatic hydrocarbon group containing a phosphonate group which has a hydroxy group as a reactive group or a phosphate group which has a hydroxy group as a reactive group with respect to a molecule to be detected, a base portion having a polycyclic aromatic hydrocarbon group, and a connecting portion having a single bond or an organic group connecting the head portion and the base portion,
wherein the organic compound comprises at least one selected from the group consisting of the following compound (2A), compound (2B), compound (2C), and compound (2D):

6. The molecular detection apparatus according to claim 1 , further comprising:
a collection unit configured to collect detection target gas containing the molecule to be detected.

7. The molecular detection apparatus according to claim 1 , further comprising:
a discriminator configured to discriminate the molecule to be detected by a detection signal generated from the sensor unit by the molecule being captured by the organic probe in the detection cell.

Assignees

• Toshiba Kk

Inventors

• Yamada Ko
• Miyamoto Hirohisa
• Yoshimura Reiko
• Osada Norikazu
• Nakamura Hiroko
• Oki Mitsuhiro

Classifications

• G01N27/4146

  involving nanosized elements, e.g. nanotubes, nanowires · CPC title

• Y02A50/245

  Cross-Sectional Technologies · mapped topic

• H01L29/1606

  Electricity · mapped topic

• G01N33/0037 Primary

  NOx · CPC title

• G01N27/4141

  specially adapted for gases · CPC title