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Fluorescence chemical sensor based on water‐soluble poly( p ‐phenylene ethynylene)–graphene oxide composite for Cu 2+
Author(s) -
Adachi Naoya,
Nakajima Mai,
Okada Mari,
Sugeno Masafumi,
Norioka Takayuki
Publication year - 2016
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3633
Subject(s) - graphene , composite number , materials science , aqueous solution , oxide , metal ions in aqueous solution , fluorescence , conjugated system , phenylene , polymer , sulfonic acid , metal , chemical engineering , side chain , inorganic chemistry , polymer chemistry , photochemistry , nanotechnology , composite material , organic chemistry , chemistry , optics , physics , metallurgy , engineering
A chemical sensor for metal ions was fabricated based on a water‐soluble conjugated polymer–graphene oxide (GO) composite. Water‐soluble poly( p ‐phenylene ethynylene) (PPE) with sulfonic acid side chain groups was used to prepare a very stable water‐soluble PPE–GO composite with strong π–π interactions in water. The relationship between the optical properties and metal ion sensing capability of the PPE–GO composite in aqueous solution was investigated. Addition of metal ions enhanced the fluorescence intensity of the composite, and, in particular, the composite enabled the fluorescence detection of Cu 2+ in aqueous solutions with high selectivity and sensitivity. Therefore, this conjugated polymer–GO composite sensor system was found to be an effective turn‐on type chemical sensor for metal ions. Copyright © 2015 John Wiley & Sons, Ltd.