Colorimetric detection sensor and colorimetric detection method for detecting cyanide anion by etching of gold nanorods
US9846127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2016 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Nov 21, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/172307
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are a colorimetric detection sensor and colorimetric detection method of a cyanide anion (CN−) by etching of gold nanorods. The colorimetric detection sensor and colorimetric detection method use label-free nanorods having no modifier attached to a surface of gold nanorods (AuNRs), wherein the aspect ratio of nanorods, pH condition and/or amount of a surfactant are controlled to carry out selective etching and to cause a change in color only by CN− so that CN− contained or dissolved in poison, water-contaminated environmental samples and legal evidence samples may be detected with ease, and show excellent selectivity, sensitivity and quantitative analyzability to CN− to provide high usefulness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.