946005-73-8Relevant academic research and scientific papers
A New Compound for Sequential Sensing of Picric Acid and Aliphatic Amines: Physicochemical Details and Construction of Molecular Logic Gates
Ghosh, Ashutosh,Seth, Sourav Kanti,Ghosh, Arnab,Pattanayak, Pradip,Mallick, Arabinda,Purkayastha, Pradipta
, p. 1157 - 1164 (2021/05/05)
Picric acid (PA) at low concentration is a serious water pollutant. Alongside, aliphatic amines (AAs) add to the queue to pollute surface water. Plenty of reports are available to sense PA with an ultralow limit of detection (LOD). However, only a handful of works are testified to detect AAs. A new fluorescent donor-acceptor compound has been synthesized with inherent intramolecular charge transfer (ICT) character that enables selective and sensitive colorimetric quantitative detection of PA and AAs with low LODs in non-aqueous as well as aqueous solutions. The synthesized compound is based on a hemicyanine skeleton containing two pyridenylmethylamino groups at the donor and a benzothiazole moiety at the acceptor ends. The detailed mechanisms and reaction dynamics are explained spectroscopically along with computational support. The fluorescence property of the detecting compound changes due to protonation of its pyridinyl centers by PA leading to quenching of fluorescence and subsequently de-protonation by AAs to revive the signal. We have further designed logic circuits from the acquired optical responses by sequential interactions.
A highly sensitive chemosensor for rapid recognition of Cu2+ and HSO3? in 100% aqueous solution
Chen, Hongbiao,Li, Huaming,Liu, Shuzhi,Liu, Yijiang,Ou, Zhipeng
, (2021/07/31)
Dual-responsive chemosensors have garnered much research interests owing to the ability of recognizing two analytes simultaneously. Herein, the chemosensor BPIS composed of hemicyanine and 2, 2′-dipyridylamine (DPA) was facilely synthesized for sensitive and expeditious recognition of Cu2+ and HSO3? in 100% aqueous solution. By adding Cu2+, BPIS showed substantial spectral changes accompanied by a noticeable color change from pink to yellow under daylight. The absorbance and fluorescence intensity were linearly correlated to the Cu2+ concentration, enabling the quantitative recognition of Cu2+. The limit of detection (LOD) for Cu2+ was down to 4.02 × 10?9 M. The response time of BPIS towards Cu2+ was 10 s, imparting BPIS great potential in real-time detection of Cu2+. Meanwhile, BPIS manifested ratiometric fluorescence response by introducing HSO3? owing to the 1,4-addition between HSO3? and the unsaturated C[dbnd]C bond of BPIS. The color of the BPIS solution progressively faded from pink to colorless with increasing HSO3? concentration, and a LOD of 3.47 × 10?9 M was obtained. In addition, BPIS-coated test paper was found to be an efficient tool for fast, sensitive, portable detection of Cu2+ and HSO3? by naked eyes. More importantly, the precise detection of Cu2+ and HSO3? in real water and sugars were realized, respectively, by capitalizing on BPIS as the signal tool.
Colorimetric indicators for specific recognition of Cu2+ and Hg2+ in physiological media: Effect of variations of signaling unit on optical response
Dey, Nilanjan,Kumari, Namita,Biswakarma, Dipen,Jha, Satadru,Bhattacharya, Santanu
supporting information, p. 50 - 57 (2018/12/11)
Easy to synthesize probes are designed using bispicolyl moiety as the receptor unit with two different signaling moieties, anthraquinone and bisindolyl. Both the compounds show ‘naked-eye’ sensing of Cu2+ and Hg2+ in ～100% aqueous me
A selective triarylmethine-based spectroscopic probe for Zn2+ ion monitoring
Lee, Naru,Ly, Nguyen Hoang,Kim, Jong Seung,Jung, Hyo Sung,Joo, Sang-Woo
, (2019/07/22)
We report the synthesis and application of a novel probe of the di-2-picolylamine (DPA)-conjugated triarylmethine (TAM) dye which has aimed at detecting Zn2+ ions. The 1:2 binding stoichiometry is estimated between Zn2+ and DPA-TAM a
Di(2-methylpyridine)amine modified pyrene derivative fluorescence probe, and synthetic method and applications thereof
-
Paragraph 0056; 0058-0059, (2017/09/26)
The invention discloses a di(2-methylpyridine)amine modified pyrene derivative fluorescence probe, and a synthetic method and applications thereof. The structure of the di(2-methylpyridine)amine modified pyrene derivative fluorescence probe is disclosed i
A Readily-Synthesized Fluorescent Probe Based on N, N-Bis (Pyridin-2-Ylmethyl) Aniline for Copper(II) Detection in Aqueous Solution
Liu, Xiaoyu,Zhang, Yuan
, p. 2267 - 2270 (2016/11/06)
In this paper, probe 1 based on N, N-bis (pyridin-2-ylmethyl) aniline is prepared as an effective fluorescent probe for Cu2+. It exhibits good sensitivity and selectivity for Cu2+ over other metal ions in aqueous solution. The detect
Ratiometric and selective two-photon fluorescent probe based on PET-ICT for imaging Zn2+ in living cells and tissues
Wu, Shang,Wei, Ya-Jun,Wang, Yan-Bin,Su, Qiong,Wu, Lan,Zhang, Hong,Yin, Fen-Ping,Yuan, Pei-Lin
, p. 93 - 98 (2014/02/14)
A two-photon fluorescent probe TPZn was developed for specific ratiometric imaging Zn2+ in living cells and tissues. Significant ratiometric fluorescence change was based on photoinduced electron transfer and intramolecular charge transfer. The synthetic method of TPZn was simple. It was successfully used to selectively image Zn2+ based on the higher binding affinity for Zn2+ than for Cd2+. TPZn was easily loaded into the living cell and tissues with high membrane permeability in a complex biological environment. TPZn could clearly visualize endogenous Zn 2+ by TP ratiometric imaging in hippocampal slices at a depth of 120 μm. Thus, TPZn is a useful tool to image of Zn2+ in living cells and tissues without interference from Cd2+.
A Probe for the selective and parts-per-billion-level detection of copper(II) and mercury(II) using a micellar medium and its utility in cell imaging
Kumari, Namita,Jha, Satadru,Misra, Santosh K.,Bhattacharya, Santanu
, p. 1059 - 1064 (2014/08/05)
A novel colorimetric probe 1 based on the picolyl moiety has been designed and synthesized. Probe 1 is composed of a pyrene and a bispicolyl amine (BPA) unit, in which the BPA moiety acts as a binding unit and the binding phenomenon is sensed from the changes in the signaling subunit. The probe detects Cu 2+ specifically in water and both Cu2+ and Hg2+ efficiently in neutral Brij-58 micellar media. The probe shows a color change visible to the naked eye upon addition of metal ions. Notably, in a micellar medium, probe 1 can detect both the Cu2+ and Hg2+ ions even at parts-per-billion levels. Furthermore, the probe shows ratiometric detection of both the metal ions making the sensing quantitative. The two metal ions could be discriminated both visibly under a UV lamp and with the use of fluorescence spectroscopy. The probe could be also used in biological cell lines for the detection of both Hg2+ and Cu2+ ions.
Exclusive detection of sub-nanomolar levels of palladium(II) in water: An excellent probe for multiple applications
Kumari, Namita,Dey, Nilanjan,Kumar, Krishan,Bhattacharya, Santanu
, p. 3174 - 3181 (2015/02/19)
A new colorimetric probe has been developed for the detection and estimation of PdII at sub-nanomolar concentrations. The probe consisted of rhodamine (signaling unit), which was linked with a bis-picolyl moiety (binding site) through a phenyl
Functionalized Fe3O4 nanoparticles for detecting zinc ions in living cells and their cytotoxicity
Kang, Gyusik,Son, Hyunjong,Lim, Jung Mi,Kweon, Hee-Seek,Lee, In Soo,Kang, Dongmin,Jung, Jong Hwa
supporting information; scheme or table, p. 5843 - 5847 (2012/06/30)
The zinc tank: A new fluoro-chromogenic chemosensor based on BODIPY-functionalized Fe3O4 nanoparticles (1) has been prepared. Chemoprobe 1 exhibits high selectivity for Zn2+ over other competing metal ions tested. Moreover, confocal microscopy experiments established that 1 can be used for detecting Zn2+ levels in living cells (see figure). Copyright
