A simple internal charge transfer probe offering dual optical detection of Co (II) via color and fluorescence modulations

Mashraqui, Sabir H.; Chandiramani, Mukesh; Betkar, Rupesh; Poonia, Kiran

doi:10.1016/j.tetlet.2009.12.132

Cited by 47 publications

(21 citation statements)

References 46 publications

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“…Besides, sensor Co-8 along the lines of the ICT concept, reported by Mashraqui and co-workers, 210 exhibited Co 2+ selective optical responses, which include 112 nm red shift in absorption (from 368 to 480 nm) and a dramatic 37-fold emission enhancement at 428 nm in the buffered CH 3 OH-H 2 O (1 : 1 v/v) system. Furthermore, Chang et al 211 developed a reaction-based sensor Co-9 for selective ''turn-on'' fluorescence detection of Co 2+ .…”

Section: Fluorescent Sensors For Cobaltmentioning

confidence: 86%

Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions

et al. 2015

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Transition metals (d-blocks) are recognized as playing critical roles in biology, and they most often act as cofactors in diverse enzymes; however, improper regulation of transition metal stores is also connected to serious disorders. Therefore, the monitoring and imaging of transition metals are significant for biological research as well as clinical diagnosis. In this article, efforts have been made to review the chemical sensors that have been developed for the detection of the first-row d-block metals (except Cu and Zn): Cr, Mn, Fe, Co, and Ni. We focus on the development of fluorescent sensors (fall into three classes: "turn-off", "turn-on", and ratiometric), colorimetric sensors, and responsive MRI contrast agents for these transition metals (242 references). Future work will be likely to fill in the blanks: (1) sensors for Sc, Ti, and V; (2) MRI sensors for Cr, Mn, Co, Ni; (3) ratiometric fluorescent sensors for Cr(6+), Mn(2+), and Ni(2+), explore new ways of sensing Fe(3+) or Cr(3+) without the proton interference, as well as extend applications of MRI sensors to living systems.

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Section: Fluorescent Sensors For Cobaltmentioning

confidence: 86%

Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions

et al. 2015

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“…In contrast, colorimetric methods can conveniently and easily monitor target ions with the naked eye. [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Compared with the many known colorimetric organic molecule sensors for Zn 2+ , Cu 2+ and Hg 2+ , there are a few colorimetric chemosensors for Co 2+ . [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40] Compared with the many known colorimetric organic molecule sensors for Zn 2+ , Cu 2+ and Hg 2+ , there are a few colorimetric chemosensors for Co 2+ .…”

Section: Introductionmentioning

confidence: 99%

A phthalazine-based two-in-one chromogenic receptor for detecting Co²⁺and Cu²⁺in an aqueous environment

et al. 2015

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A new multifunctional and highly selective chemosensor for Co(2+) and Cu(2+) was designed and synthesized. could simultaneously detect both Co(2+) and Cu(2+) by changing its color from pale yellow to pink and to orange in a near-perfect aqueous solution. The binding modes of to Co(2+) and Cu(2+) were determined to be a 2 : 1 complexation stoichiometry through Job's plot, ESI-mass spectrometry analysis and (1)H NMR titration. The detection limits (1.5 and 2.1 μM) of for Co(2+) and Cu(2+) were lower than the DEP guidelines (1.7 μM for Co(2+)) and the WHO guidelines (31.5 μM for Cu(2+)) for drinking water. The chemosensor could be used to quantify Co(2+) and Cu(2+) in water samples. Moreover, could be used as a practical, visible colorimetric test kit for both Co(2+) and Cu(2+). The sensing mechanisms of Co(2+) and Cu(2+) by were supported by theoretical calculations.

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“…Several principal analytical methods including inductively coupled plasma atomic emission spectrometry (ICP-AES) [10], flame atomic absorption spectrometry [11], surface plasmon resonance (SPR) [12], surface-enhanced Raman scattering (SERS) [13], chemiluminescence [14] and electrochemical methods [15] have been reported aiming to detect Co 2+ . Unfortunately, these techniques usually require either expensive equipment, cumbersome processes, or tedious pretreatments, making them difficult to apply to the real-time determination of Co 2+ .…”

Section: Introductionmentioning

confidence: 99%

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

Liu

Yang

et al. 2019

Molecules

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In this work, a highly selective fluorescent chemosensor N-(2-(2-butyl-1,3-dioxo-2,3-dihydro-1H-benzo[de]isoquinolin-6-yl)hydrazine-1-carbonothioyl)benzamide (L) was prepared and characterized. An assay to detect the presence of cobalt(II) ions was developed by utilizing turn-on fluorescence enhancement with visual colorimetric response. Upon treatment with Co2+, a remarkable fluorescence enhancement located at 450 nm was visible to naked eyes accompanied with a distinct color change (from pink to colorless) in a CH3CN/HEPES (4/1, v/v, pH = 7.4) solution due to the formation of a 1:1 complex at room temperature. In addition, the linear concentration range for Co2+ was 0–25 µM with the limit of detection down to 0.26 µM. Thus, a highly sensitive fluorescent method based on chelation-assisted fluorescence enhancement was developed for the trace-level detection of Co2+. The sensor was found to be highly selective toward Co2+ ions with a large number of coexisting ions. Furthermore, the L probe can serve as a fluorescent sensor for Co2+ detecting in biological environments, demonstrating its low toxic properties to organisms and good cell permeability in live cell imaging.

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A simple internal charge transfer probe offering dual optical detection of Co (II) via color and fluorescence modulations

Cited by 47 publications

References 46 publications

Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions

Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions

A phthalazine-based two-in-one chromogenic receptor for detecting Co²⁺and Cu²⁺in an aqueous environment

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

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A simple internal charge transfer probe offering dual optical detection of Co (II) via color and fluorescence modulations

Cited by 47 publications

References 46 publications

Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions

Fluorescent, MRI, and colorimetric chemical sensors for the first-row d-block metal ions

A phthalazine-based two-in-one chromogenic receptor for detecting Co2+and Cu2+in an aqueous environment

A New Fluorescent Chemosensor for Cobalt(II) Ions in Living Cells Based on 1,8-Naphthalimide

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A phthalazine-based two-in-one chromogenic receptor for detecting Co²⁺and Cu²⁺in an aqueous environment