One-pot photoinduced synthesis of dansyl containing acrylamide hydrogels and their chemosensing properties

Uygun M., DOĞANCI E., Tasdelen M. A., Gurek A. G.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.136, sa.8, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 136 Sayı: 8
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1002/app.47096
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: dansyl, heavy metal ion-sensing, hydrogels, nitroaromatic compounds, photoinitiation, PHOTOPHYSICAL PROPERTIES, RADICAL POLYMERIZATION, FLUORESCENT SENSOR, NITROAROMATICS, ABSORPTION, DENDRIMERS, MONOMER, STYRENE, FILMS, HG2+
  • Kocaeli Üniversitesi Adresli: Evet

Özet

Novel fluorescent acrylamide hydrogel containing dansyl moiety (DNS-gel) was synthesized via free-radical photopolymerization of acrylamide/N,N-methylenebisacrylamide by using dansyl chloride as a photoinitiator. DNS-gel presented dual-fluorescence emission when excited at 344nm in acetonitrile:water (1:1) solvent system due to twisted intramolecular charge transfer between dimethylamino and naphthalene units in the dansyl moiety. Synthesized fluorophore containing gel was utilized as a fluorescent sensor against specific metal ions (Pb2+, Hg2+, Co2+, Cd2+, Mn2+, and Zn2+) and nitroaromatic compounds [1,2-dinitrobenzene, 2,4,6-trinitro-1-phenol [picric acid (PA)], 4-nitrophenol, 2,4,6-trinitrotoluene, 2,4-dinitrophenol (2,4-DNP), and 2-nitrotoluene]. Fluorescence intensity of DNS-gel was diminished by degrees upon the infusion of metal ions and nitroaromatics. For all compounds, the greatest quenching effectiveness was attained in the presence of Co2+ (72.56%), PA (88.55%), and 2,4-DNP, suggesting that DNS-gel could be employed as a potential Co2+, PA, and 2,4-DNP chemical probes. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47096.