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

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.

Download Full-text

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 ◽

10.1039/d0ra03171b ◽

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.

Download Full-text

Novel fluorescent chemosensing of CN− anions with nanomolar detection using the Zn2+–isonicotinohydrazide metal complex

RSC Advances ◽

10.1039/c4ra06358a ◽

2014 ◽

Vol 4 (79) ◽

pp. 41802-41806 ◽

Cited By ~ 16

Author(s):

Nilesh Khairnar ◽

Kundan Tayade ◽

Shilpa Bothra ◽

Suban K. Sahoo ◽

Jasminder Singh ◽

...

Keyword(s):

Metal Complex ◽

Aqueous Medium ◽

Selective Detection ◽

Nanomolar Detection

A novel chemosensor based on the Zn2+–isonicotinohydrazide complex ‘(ZnL)’ was developed for the selective detection of cyanide (CN−) over other tested anions, such as HSO4−, F−, Cl−, Br−, I−, NO3−, PO43−, SO42−, SCN−, S2−, CH3COO− and H2PO4− in 100% aqueous medium.

Download Full-text

Highly selective flurogenic chemosensor for cyanide ion in aqueous medium and its applications of logic gate and Hela cells

Journal of Molecular Liquids ◽

10.1016/j.molliq.2021.116076 ◽

2021 ◽

Vol 334 ◽

pp. 116076

Author(s):

Harikrishnan Muniyasamy ◽

Chithiraikumar Chinnadurai ◽

Malini Nelson ◽

Aravind Manikka Kubendran ◽

Karthika Sukumaran ◽

...

Keyword(s):

Aqueous Medium ◽

Hela Cells ◽

Logic Gate ◽

Cyanide Ion

Download Full-text

Selective and sensitive turn-on chemosensor for Al(iii) ions applicable in living organisms: nanomolar detection in aqueous medium

RSC Advances ◽

10.1039/c5ra13478a ◽

2015 ◽

Vol 5 (89) ◽

pp. 72508-72514 ◽

Cited By ~ 10

Author(s):

Siddhartha Pal ◽

Buddhadeb Sen ◽

Manjira Mukherjee ◽

Mousumi Patra ◽

Susmita Lahiri (Ganguly) ◽

...

Keyword(s):

Aqueous Medium ◽

Cell Lines ◽

A549 Cell ◽

Turn On ◽

Highly Sensitive ◽

Nanomolar Detection ◽

Living Organisms ◽

Tea Extract

A new crystallographically characterized non-cytotoxic CHEF based highly sensitive Al(iii) ion selective chemosensor (L) is useful to detect the Al(iii) ions' distribution in A549 cell lines and also able to sense Al(iii) ions in tea extract.

Download Full-text

N,N-dimethylaminoethylaminoanthrone – A chromofluorogenic chemosensor for estimation of Cu2+ in aqueous medium and HeLa cells imaging

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2012.11.093 ◽

2013 ◽

Vol 177 ◽

pp. 904-912 ◽

Cited By ~ 24

Author(s):

Ashwani Kumar ◽

Vanita Vanita ◽

Amandeep Walia ◽

Subodh Kumar

Keyword(s):

Aqueous Medium ◽

Hela Cells

Download Full-text

Nanomolar Detection of AgIIons in Aqueous Medium by Using Naphthalimide-Based Imine-Linked Fluorescent Organic Nanoparticles - Application in Environmental Samples

European Journal of Inorganic Chemistry ◽

10.1002/ejic.201402473 ◽

2014 ◽

Vol 2014 (31) ◽

pp. 5424-5431 ◽

Cited By ~ 8

Author(s):

Hemant Sharma ◽

Vimal K. Bhardwaj ◽

Narinder Singh

Keyword(s):

Aqueous Medium ◽

Environmental Samples ◽

Organic Nanoparticles ◽

Fluorescent Organic Nanoparticles ◽

Nanomolar Detection

Download Full-text

Silver nanoparticles as highly efficient and selective optical probe for sulphide via dendrimer formation in aqueous medium

RSC Advances ◽

10.1039/c5ra25625a ◽

2016 ◽

Vol 6 (18) ◽

pp. 14563-14569 ◽

Cited By ~ 6

Author(s):

Isha Sanskriti ◽

K. K. Upadhyay

Keyword(s):

Silver Nanoparticles ◽

Detection Limit ◽

Aqueous Medium ◽

Optical Probe ◽

Colorimetric Sensor ◽

Highly Efficient ◽

Nanomolar Detection

1-[(4-Nitrophenyl)azo]-2-naphthol capped AgNPs were evaluated as a colorimetric sensor for S2− in aqueous medium over pH 4 to 10 with a nanomolar detection limit. The TEM, SEM and AFM images revealed the transition of spherical AgNPs into dendrimers.

Download Full-text