Abstract
Here we report a novel design concept for a molecular sensing platform that specifically generates under non-toxic visible laser excitation, resonance Raman signatures of nitrile (∼2200 cm-1) in response to reactive oxygen species (ROS). The sensing principle employs a ROS-triggered oxidative chromogenic reaction that activates resonance Raman enhancement through chemical transformation of a non-resonant hydrazo molecule into a resonant azo dye with extended π-conjugation. Experimental studies as well as DFT calculation demonstrate that such a design strategy for activatable resonance Raman sensor is valid for selective detection of highly oxidative ROS, hypochlorite ions in the present case, down to 100 ppm.
| Original language | English |
|---|---|
| Pages (from-to) | 162-167 |
| Number of pages | 6 |
| Journal | Dyes and Pigments |
| Volume | 130 |
| DOIs | |
| Publication status | Published - 2016 Jul 1 |
| Externally published | Yes |
Bibliographical note
Funding Information:This work was supported by grants from the National Research Foundation of Korea ( 2014M3A6B2060522 ), the Intramural Research Program of KIST, and in part by the National Institute of Health ( 1R21EY026411-01 ).
Keywords
- Bio-orthogonal Raman scattering
- Hypochlorite
- Raman sensor
- Reactive oxygen species
- Resonance Raman
ASJC Scopus subject areas
- General Chemical Engineering
- Process Chemistry and Technology
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