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Spray coating thin polymeric sensor films for Au 3+
Author(s) -
Chansri Prangtip,
Wanno Banchob,
Keawwangchai Somchai,
Tuntulani Thawatchai,
Pulpoka Buncha,
Kaewtong Chatthai
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48273
Subject(s) - detection limit , materials science , rhodamine , fluorescence , coating , fourier transform infrared spectroscopy , amine gas treating , thin film , reagent , chemical engineering , metal ions in aqueous solution , yield (engineering) , nuclear chemistry , polymer chemistry , analytical chemistry (journal) , nanotechnology , metal , chemistry , organic chemistry , chromatography , composite material , physics , quantum mechanics , engineering , metallurgy
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 Au 3+ over other metal ions. Upon the addition of Au 3+ , significant color change and “Off–On” fluorescence were observed due to a cation Au 3+ 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 Au 3+ 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 Au 3+ in environmental and biological applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48273.