Turn-off chelation-enhanced fluorescence sensing of carbon dot-metallic deep eutectic solvent by imidazole-based small molecules

Abstract A new benzothiazole-based chemosensor BTN (1-((Z)-(((E)-3-methylbenzo[d]thiazol-2(3H)-ylidene)hydrazono)methyl)naphthalen-2-ol) was synthesized for the detection of Cu2+. BTN could detect Cu2+ with “off-on” fluorescent response from colorless to yellow irrespective of presence of other cations. Limit of detection for Cu2+ was determined to be 3.3 µM. Binding ratio of BTN and Cu2+ turned out to be a 1:1 with the analysis of Job plot and ESI-MS. Sensing feature of Cu2+ by BTN was explained with theoretical calculations, which might be owing to internal charge transfer and chelation-enhanced fluorescence processes.

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Competition Between Energy Transfer Quenching and Chelation Enhanced Fluorescence in a Cu (II) Coordinated Conjugated Polymer System

Journal of Fluorescence ◽

10.1007/s10895-008-0444-9 ◽

2008 ◽

Vol 19 (3) ◽

pp. 555-559 ◽

Cited By ~ 11

Author(s):

Li-Juan Fan ◽

Justin J. Martin ◽

Wayne E. Jones

Keyword(s):

Energy Transfer ◽

Conjugated Polymer ◽

Polymer System ◽

Enhanced Fluorescence ◽

Chelation Enhanced Fluorescence

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Novel luminescent paper based calix[4]arene chelation enhanced fluorescence- photoinduced electron transfer probe for Mn2+, Cr3+ and F-

Journal of Luminescence ◽

10.1016/j.jlumin.2018.12.009 ◽

2019 ◽

Vol 208 ◽

pp. 6-17 ◽

Cited By ~ 10

Author(s):

Pinkesh G. Sutariya ◽

Heni Soni ◽

Sahaj A. Gandhi ◽

Alok Pandya

Keyword(s):

Electron Transfer ◽

Photoinduced Electron Transfer ◽

Enhanced Fluorescence ◽

Chelation Enhanced Fluorescence

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Interaction studies of lead(II) ion with cyclic β‐(1→3),(1→6) glucans extracted fromBradyrhizobium japonicumbased on ‘chelation enhanced fluorescence’ (CHEF) effect

Luminescence ◽

10.1002/bio.3536 ◽

2018 ◽

Vol 33 (7) ◽

pp. 1202-1208

Author(s):

K. N. S. Visweswar ◽

A. Sunil ◽

A. Sri Harsha ◽

Ch. Janardhana

Keyword(s):

Enhanced Fluorescence ◽

Interaction Studies ◽

Chelation Enhanced Fluorescence

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Dynamic and static excimer: a versatile platform for single component white-light emission and chelation-enhanced fluorescence

Journal of Materials Chemistry C ◽

10.1039/c8tc03035a ◽

2018 ◽

Vol 6 (44) ◽

pp. 12086-12094 ◽

Cited By ~ 14

Author(s):

Virendra Kumar ◽

Bahadur Sk ◽

Subhankar Kundu ◽

Abhijit Patra

Keyword(s):

White Light ◽

Light Emission ◽

White Light Emission ◽

Single Component ◽

Sensitive Detection ◽

Enhanced Fluorescence ◽

Efficient Generation ◽

Chelation Enhanced Fluorescence

Tailoring the formation of dynamic and static excimers in a C3-symmetric architecture led to efficient generation of white light and sensitive detection of Fe3+ and Al3+ in a single molecular platform.

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