scholarly journals Highly selective and sensitive simultaneous nanomolar detection of Cs(i) and Al(iii) ions using tripodal organic nanoparticles in aqueous media: the effect of the urea backbone on chemosensing

RSC Advances ◽  
2020 ◽  
Vol 10 (38) ◽  
pp. 22691-22700
Author(s):  
Jayanti Mishra ◽  
Manpreet Kaur ◽  
Navneet Kaur ◽  
Ashok K. Ganguli
Keyword(s):  
Aqueous Medium ◽  
Aqueous Media ◽  
Organic Nanoparticles ◽  
Nanomolar Detection

Two ligands 1 and 2 are synthesized and their organic nanoparticles (1-ONP and 2-ONP) are generated. 1-ONP has shown the chemosensing of Cs(i) (∼220 nm) and Al(iii) (∼377 nm) in aqueous medium while 2-ONP has not shown any chemosensing behaviour.

Fluorescent organic nanoparticles (FONs) as convenient probes for metal ion detection in aqueous medium

The Analyst ◽  
2019 ◽  
Vol 144 (8) ◽  
pp. 2480-2497 ◽  
Author(s):  
Mukhtiar Ahmed ◽  
Muhammad Faisal ◽  
Ayesha Ihsan ◽  
Muhammad Moazzam Naseer
Keyword(s):  
Metal Ions ◽  
Aqueous Medium ◽  
Metal Ion ◽  
Aqueous Media ◽  
Ion Detection ◽  
Organic Nanoparticles ◽  
Fluorescent Organic Nanoparticles ◽  
Accurate Detection ◽  
Recent Developments ◽  
Metal Ion Detection

Fluorescent organic nanoparticle (FON)-based chemosensors are emerging as a valuable tool for the fast and accurate detection of metal ions in aqueous media. In this review, we highlight the recent developments in this field.

Fluorescent organic nanoparticles as chemosensor for nanomolar detection of Cs+ in aqueous medium

2014 ◽  
Vol 106 ◽  
pp. 45-50 ◽  
Author(s):  
Shweta Chopra ◽  
Narinder Singh ◽  
Pandiyan Thangarasu ◽  
Vimal K. Bhardwaj ◽  
Navneet Kaur
Keyword(s):  
Aqueous Medium ◽  
Organic Nanoparticles ◽  
Fluorescent Organic Nanoparticles ◽  
Nanomolar Detection

Hybrid nanoparticle based fluorescence switch for recognition of ketoprofen in aqueous media

2020 ◽  
Vol 5 (8) ◽  
pp. 1428-1436
Author(s):  
Anu Saini ◽  
Manpreet Kaur ◽  
Mayank ◽  
Anil Kuwar ◽  
Navneet Kaur ◽  
...  
Keyword(s):  
Aqueous Media ◽  
Fluorescent Chemosensors ◽  
Fluorescence Switch ◽  
Nanomolar Detection ◽  
Hybrid Nanoparticle

Hybrid nanoassembly, fluorescent chemosensors, selective response to ketoprofen, and nanomolar detection.

scholarly journals Selective Colorimetric Sensors for Cyanide and Acetate Ion in Partially Aqueous Medium

2018 ◽  
Author(s):  
Divya Singhal ◽  
Neha Gupta ◽  
Ashok Kumar Singh
Keyword(s):  
Detection Limit ◽  
Aqueous Medium ◽  
1H Nmr ◽  
Binding Constant ◽  
High Selectivity ◽  
Good Sensitivity ◽  
Dft Studies ◽  
Nmr Titration ◽  
1H Nmr Titration ◽  
Nanomolar Detection

4-(thiazol-2-yldiazenyl)phenol (L1) and 2-((4-hydroxyphenyl) diazenyl)-5-nitrophenol (L2) based on azo phenol were synthesised and used as selective colorimetric sensor for CN- and AcO− ion in DMSO/H2O-HEPES (v/v; 1:1, pH–7.3 ± 0.2) and showed good sensitivity with large red shifts and nanomolar detection limit for CN- and AcO- ion. The stoichiometry of L1 with CN−/AcO− ion was found to be 1:1 and L2 with CN−/AcO− ion was found to be 1:2. Binding constant for L1+ CN−, L1 + AcO−, L2 + CN− and L2 + AcO− were calculated by B-H plot as 1.6 × 103, 8.0 × 102, 8.4 × 103 and 1.7 × 102 respectively. L2 showed high selectivity towards CN− ion with low detection limit of 81 nM and large binding constant. In addition, 1H NMR titration and DFT studies also supported the deprotonation mechanism of receptors in the presence of selective anions.

scholarly journals Nanomolar Detection of H2S in an Aqueous Medium: Application in Endogenous and Exogenous Imaging of HeLa Cells and Zebrafish

ACS Omega ◽  
2020 ◽  
Vol 5 (31) ◽  
pp. 19896-19904
Author(s):  
Sanay Naha ◽  
Natesan Thirumalaivasan ◽  
Somenath Garai ◽  
Shu-Pao Wu ◽  
Sivan Velmathi
Keyword(s):  
Aqueous Medium ◽  
Hela Cells ◽  
Nanomolar Detection

scholarly journals Synthesis of Functionalized Dihydropyrido[2,3-d]pyrimidines in Aqueous Medium

SynOpen ◽  
2018 ◽  
Vol 02 (01) ◽  
pp. 0001-0005 ◽  
Author(s):  
Saeed Balalaie ◽  
Hamed Esmaeilabadi ◽  
Saber Mehrparvar ◽  
Frank Rominger ◽  
Fatima Hamdan ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Aqueous Media ◽  
Aromatic Aldehydes ◽  
Cascade Reaction ◽  
Hydrogen Phosphate ◽  
Diammonium Hydrogen Phosphate ◽  
Diammonium Hydrogen

Synthesis of functionalized 2,3-dihydropyrido[2,3-d]pyrimidin-4(1H)-one from a cascade reaction between 3-formylchromone, malononitrile, diammonium hydrogen phosphate, and aromatic aldehydes in aqueous media is described.

A highly selective fluorescent chemosensor based on naphthalimide and Schiff base units for Cu2+ detection in aqueous medium

2017 ◽  
Vol 72 (1) ◽  
pp. 35-41 ◽  
Author(s):  
Yuling Xu ◽  
Stephen Opeyemi Aderinto ◽  
Huilu Wu ◽  
Hongping Peng ◽  
Han Zhang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Fluorescence Quenching ◽  
Aqueous Medium ◽  
High Selectivity ◽  
Photophysical Properties ◽  
Aqueous Media ◽  
Medium Ph ◽  
Absorption And Fluorescence Spectroscopy ◽  
High Fluorescence ◽  
Base Units

AbstractA new Schiff base, 4-allylamine-N-(N-5-methylsalicylidene)-1,8-naphthalimide (1), has been designed and synthesized by combining a 1,8-naphthalimide moiety as a fluorophore and a Schiff base as a recognition group. Its photophysical properties were investigated by absorption and fluorescence spectroscopy, and this sensor exhibits a high fluorescence quantum yield of 0.75–0.91 inorganic solvents of different polarity. It also shows high selectivity for Cu2+ over other ions with fluorescence quenching in aqueous medium (pH=7.2). The reason for this phenomenon (fluorescence quenching) is attributed to the formation of a 1:1 complex between 1 and Cu2+ according to the Job plot and fluorescence titration. The sensor can be applied to the quantification of Cu2+ in a linear fashion from 0.5 to 5 μM with a detection limit of 0.23 μM. Additionally, the association constant (Ka) between Cu2+ and 1 is 1.328×106 M−1 in aqueous media.

Uncatalyzed Reactions in Aqueous Media: Three-Component, One-Pot, Clean Synthesis of Tetrahydrobenzo[b]pyran Derivatives

2007 ◽  
Vol 60 (4) ◽  
pp. 305 ◽  
Author(s):  
Sunita B. Bandgar ◽  
Babasaheb P. Bandgar ◽  
Balaji L. Korbad ◽  
Jalinder V. Totre ◽  
Sachin Patil
Keyword(s):  
Aqueous Medium ◽  
Aqueous Media ◽  
Aromatic Aldehydes ◽  
Pure Form ◽  
One Pot ◽  
Clean Synthesis ◽  
Neutral Conditions

The synthesis of various tetrahydrobenzo[b]pyran derivatives has been carried out by means of an uncatalyzed, three-component, one-pot clean condensation of aromatic aldehydes, reactive methylene compounds, and dimidone in aqueous medium. Simple workup, and mild and neutral conditions that give quantitative yields of products in pure form, are the attractive features of this method.

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