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- Title
Spray coating thin polymeric sensor films for Au<sup>3+</sup>.
- Authors
Chansri, Prangtip; Wanno, Banchob; Keawwangchai, Somchai; Tuntulani, Thawatchai; Pulpoka, Buncha; Kaewtong, Chatthai
- Abstract
A novel polymeric sensor of the poly(sodium‐4‐styrenesulfonate) (PSS)‐modified rhodamine B derivative (Rho) was synthesized using 1‐ethyl‐3‐(3‐dimethylaminopropyl)carbodiimide (EDC)/N,N′‐dimethylpyridin‐4‐amine (DMAP) as coupling reagents to obtain PSS‐Rho4 in 21% yield. The characterization and "Off–On" sensing phenomena were established through UV–Vis, fluorescence, NMR, and FTIR techniques. The PSS‐Rho4 showed high selectivity and sensitivity for Au3+ over other metal ions. Upon the addition of Au3+, significant color change and "Off–On" fluorescence were observed due to a cation Au3+ induced spirolactam ring‐opening process with detection limit down to micromolar values (1.2 μM). In addition, spray coating thin polymeric sensor films were produced onto the surface of material (PSS‐Rho4‐ITO and PSS‐Rho4‐filtered paper) providing a fast, portable, and easy‐to‐use molecular device for the detection of Au3+ in the real system. Reversibility was evaluated by rinsing with EDTA solution under basic condition. We believe that, this approach provides a sensitive and accurate method for the detection of Au3+ in environmental and biological applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48273.
- Subjects
DETECTORS; RHODAMINE B; SURFACES (Technology); LACTAMS; DETECTION limit; SPRAYING
- Publication
Journal of Applied Polymer Science, 2020, Vol 137, Issue 2, pN.PAG
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.48273