Publication: Water-soluble polyaromatic-based imidazolium for detecting picric acid: Pyrene vs. anthracene
6
Issued Date
2021-03-01
Resource Type
ISSN
09254005
Other identifier(s)
2-s2.0-85109087677
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Sensors and Actuators, B: Chemical. Vol.330, (2021)
Suggested Citation
Chenchira Pherkkhuntod, Vuthichai Ervithayasuporn, Supphachok Chanmungkalakul, Chao Wang, Xiaogang Liu, David J. Harding, Suda Kiatkamjornwong Water-soluble polyaromatic-based imidazolium for detecting picric acid: Pyrene vs. anthracene. Sensors and Actuators, B: Chemical. Vol.330, (2021). doi:10.1016/j.snb.2020.129287 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/76954
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Water-soluble polyaromatic-based imidazolium for detecting picric acid: Pyrene vs. anthracene
Abstract
Highly water-soluble fluorescent polyaromatic-based imidazolium compounds capable of detecting a wide-range of nitroaromatics, e.g., nitrophenols and picric acid in aqueous solution with fully quenched fluorescence are reported. The two probes contained an anthracene and pyrene group with the increased size and angularity of the pyrene ring in pyrene-based imidazolium (PIM) raising the hydrophobicity or π-π stacking and sensitivity of the probe towards all mono-, di-, and trinitrophenols even under harsh conditions (pH 4-8). The high affinity for nitrophenols was confirmed by single crystal X-ray crystallography. Time-dependent density functional theory (TD-DFT) reveals cation-anion interactions between the imidazolium and picrate ions causing fluorescent quenching through PET and charge transfer involving a dark S1 excited state.