Carbazole incorporated ratiometric chemosensor for Zn2+

Aasif Helal; Hong Seok Kim

doi:10.1016/j.saa.2012.12.034

Carbazole incorporated ratiometric chemosensor for Zn²⁺

Aasif Helal
, Hong Seok Kim^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

An electron donating carbazole incorporated thiazole (3) based Zn ²⁺ selective intrinsic chemosensor has been synthesized and investigated. It was found that electron donating substituents such as methyl and carbazole on chemosensor (1) produce remarkable red shift in emission upon complexation with Zn²⁺. The sensor shows a selective fluorescence response with Zn²⁺ over biologically relevant cations (Ca ²⁺, Mg²⁺, Na⁺, and K⁺) and biologically non-relevant cations (Cd²⁺, In³⁺ and Ga ³⁺) in an aqueous ethanol system. It also produce an enhancement in the quantum yield and a longer emission wavelength shift on Zn²⁺ binding with the potential of a ratiometric assay.

Original language	English
Pages (from-to)	273-279
Number of pages	7
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	105
DOIs	https://doi.org/10.1016/j.saa.2012.12.034
State	Published - 15 Mar 2013
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the NRF grant funded by MEST in Korea ( NRF-2010-0010070 ). The Research Institute of Industrial Technology at Kyungpook National University also supported A.H.

Keywords

Carbazole
Chemosensor
ESIPT
Fluorescence
Ratiometric sensing of Zn

ASJC Scopus subject areas

Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Spectroscopy

Access to Document

10.1016/j.saa.2012.12.034

Cite this

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title = "Carbazole incorporated ratiometric chemosensor for Zn2+",

abstract = "An electron donating carbazole incorporated thiazole (3) based Zn 2+ selective intrinsic chemosensor has been synthesized and investigated. It was found that electron donating substituents such as methyl and carbazole on chemosensor (1) produce remarkable red shift in emission upon complexation with Zn2+. The sensor shows a selective fluorescence response with Zn2+ over biologically relevant cations (Ca 2+, Mg2+, Na+, and K+) and biologically non-relevant cations (Cd2+, In3+ and Ga 3+) in an aqueous ethanol system. It also produce an enhancement in the quantum yield and a longer emission wavelength shift on Zn2+ binding with the potential of a ratiometric assay.",

keywords = "Carbazole, Chemosensor, ESIPT, Fluorescence, Ratiometric sensing of Zn",

author = "Aasif Helal and Kim, \{Hong Seok\}",

note = "Funding Information: This work was supported by the NRF grant funded by MEST in Korea ( NRF-2010-0010070 ). The Research Institute of Industrial Technology at Kyungpook National University also supported A.H. ",

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AB - An electron donating carbazole incorporated thiazole (3) based Zn 2+ selective intrinsic chemosensor has been synthesized and investigated. It was found that electron donating substituents such as methyl and carbazole on chemosensor (1) produce remarkable red shift in emission upon complexation with Zn2+. The sensor shows a selective fluorescence response with Zn2+ over biologically relevant cations (Ca 2+, Mg2+, Na+, and K+) and biologically non-relevant cations (Cd2+, In3+ and Ga 3+) in an aqueous ethanol system. It also produce an enhancement in the quantum yield and a longer emission wavelength shift on Zn2+ binding with the potential of a ratiometric assay.

KW - Carbazole

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