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Öğe Low-cost and environmentally sensitive fluorescent cellulose paper for naked-eye detection of Fe(III) in aqueous media(ELSEVIER SCI LTD, 2020) Oguz, Mehmet.; Kursunlu, Ahmed Nuri.; Yilmaz, Mustafa.The design of eco-friendly materials to detect heavy metals is today's demand to decrease pollutions in natural waters. This paper demonstrates low-cost and environmentally sensitive material for removal and detection of Fe (III) ions in polluted waters. For this, raw cellulose with powder form was firstly fabricated via immobilizing hexamethylene diisocyanate. Following the activation of cellulose, it was modified with a Bodipy for useful spectroscopic measurements to effectively detect and remove Fe(III) ion from aqueous medium. The Bodipy-based cellulose (Cell-BODIPY) exhibited exceptional performance for detecting Fe(III) ion under both long-wave light and daylight. For a better visualization in practical applications, the same modification process was also carried out for filter paper. To the best of our knowledge, this paper will inspire alternative methods in the selective detection and elimination of heavy metal ions in polluted waters.Öğe On/off rhodamine-BODIPY-based fluorimetric/colorimetric sensor for detection of mercury (II) in half-aqueous medium(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2019) Kursunlu, Ahmed Nuri.; Oguz, Mehmet.; Yilmaz, Mustafa.A turn on/off rhodamine-BODIPY (RB) fluorescent sensor has been designed for selective and sensitive detection of Hg (II) cation in half-aqueous solution. For this purpose, a BODIPY derivative having dual-cores is bilaterally bound to a rhodamine containing dual-amine moieties. The newly prepared sensor reacts with mercury (II) salt to generate a product with different optical parameters. These are changes confirmed by absorption, emission, and excitation measurements. A blue shift is observed as the "Turn-off" change the pink color to transparent upon the addition of Hg (II) ions which is assigned to the suppression of fluorescence resonance energy transfer upon mercury (II) ion affinity. Selectivity toward the Hg (II) ion is found to depend upon the cavity size created of the amino moieties of rhodamine and the carbonyls of BODIPY to the metal ion. The sensor RB is selective and sensitive to Hg (II) with a detection limit [1.94 (+/- 0.2) 10(-8) M]. The three-way fluorescent probe can he selectively applied for the detection of mercury (II) ion in real water samples.