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dc.contributor.author채필석-
dc.date.accessioned2019-11-21T05:02:58Z-
dc.date.available2019-11-21T05:02:58Z-
dc.date.issued2017-03-
dc.identifier.citationANALYTICA CHIMICA ACTA, v. 958 , page. 38-50en_US
dc.identifier.issn0003-2670-
dc.identifier.issn1873-4324-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0003267016315069?via%3Dihub-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/113131-
dc.description.abstractThree electronically tuned fluorescent probes (1-3) were synthesized by conjugating a fluorescent unit to N,N-bis-(hydroxyethyl)ethylenediamine. Probe 1 bearing an electron-deficient naphthalenedimide unit did not give a fluorescence response to the presence of various metal ions including monovalent metal ions (Na+, K+, and Ag+), divalent metal ions (Ca2+, Cd2+, Co2+, Ni2+, Cu2+, Hg2+, Pb2+, and Zn2+) and trivalent metal ions (Al3+, Ga3+, Fe3+, and Cr3+) in an aqueous solution. By contrast, probes 2 and 3 possessing 1,8-naphthalimide and pyrene fluorophores, respectively, exhibited selective fluorescent "OFF-ON" behaviors as a result of Ga3+/Al3+ binding among the diverse metal ions, suggesting the importance of fluorophore electronic character with regard to metal ion sensing. The ethylenediamine analog of probe 3, corresponding to probe 4, was unable to yield a significant change in fluorescence intensity in the presence of any metal ions tested here, revealing the essential role of two hydroxyl groups for metal ion binding. A high association constant of Ka = 2.99 x 10(5) M-1 was obtained for probe 3 with Ga3+, with a limit of detection (LOD) of 10 nM. This LOD is the lowest value known for Ga3+ detection using chemical sensors. Along with an increase in aggregate sizes, PET suppression of probes upon metal ion binding was the primary contributor to the enhancement in fluorescence emission necessary for the sensitive detection of the target ions. The probe-metal ion complexes were fully characterized via TEM, FE-SEM, H-1 NMR, fluorescence spectroscopy techniques and DFT calculations. (C) 2016 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipThis work was supported by the National Research Foundation of Korea (NRF) funded by the Korean government (MSIP) (grant number 2008-0061891 to P.S.C. and A.K.). We are very thankful to Prof. Youngbok Lee (Hanyang university, Ansan) for providing the 1H-1H COSY (2D-NMR) data of probe 3.en_US
dc.language.isoen_USen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.subjectN,N-bis-(hydroxyethyl)ethylenediamineen_US
dc.subjectNaphthalenedimideen_US
dc.subject1,8-Naphthalimideen_US
dc.subjectPyrene sulfonamidesen_US
dc.subjectAggregation-induced emissionen_US
dc.subjectPhoto-induced electron transferen_US
dc.titleElectronically tuned sulfonamide-based probes with ultra-sensitivity for Ga3+ or Al3+ detection in aqueous solutionen_US
dc.typeArticleen_US
dc.relation.volume958-
dc.identifier.doi10.1016/j.aca.2016.12.032-
dc.relation.page38-50-
dc.relation.journalANALYTICA CHIMICA ACTA-
dc.contributor.googleauthorKumar, Ashwani-
dc.contributor.googleauthorChae, Pil Seok-
dc.relation.code2017003420-
dc.sector.campusS-
dc.sector.daehakGRADUATE SCHOOL[S]-
dc.sector.departmentDEPARTMENT OF BIONANOTECHNOLOGY-
dc.identifier.pidpchae-
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GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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