Etching of unmodified Au@Ag nanorods: a tunable colorimetric visualization for the rapid and high selective detection of Hg2+

RSC Advances ◽  
2015 ◽  
Vol 5 (124) ◽  
pp. 102542-102549 ◽  
Author(s):  
Rong Yang ◽  
Dan Song ◽  
Chongwen Wang ◽  
Anna Zhu ◽  
Rui Xiao ◽  
...  

A simple and cost-effective colorimetric approach based on unmodified Au@Ag nanorods (Au@Ag NRs) was developed for Hg2+ detection.

2021 ◽  
Author(s):  
Prabhpreet Singh ◽  
Navdeep Kaur

Bay-functionalization of perylene diimide (PDI) dye provide scope for modulating the optical properties of PDI. Symmetrical functionalization at 1,7-position of bay-region of PDI offered limited scope for tunability of photo...


2021 ◽  
Author(s):  
Priyakshree Borthakur ◽  
Purna K Boruah ◽  
Punamshree Das ◽  
Manash Ranjan Das

The development of cost effective and efficient nanomaterials with enzyme mimetics and photocatalytic activity has achieved tremendous research interest concerning quantitative detection as well as the removal of toxic environmental...


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
S. D. Sukanya ◽  
B. E. Kumara Swamy ◽  
J. K. Shashikumara ◽  
S. C. Sharma ◽  
S. A. Hariprasad

AbstractIn the present work, Orange CD was chosen as an intriguing modifier for the electropolymerization on the surface of CPE by the CV technique. A novel, sensitive, and cost-effective poly (Orange CD) MCPE (PoOCD/MCPE) sensor was utilized for the selective detection of paracetamol (PA) in 0.2 M phosphate buffer solution (PBS) of pH 7.4. The oxidation peak current of PA was vastly enhanced at the sensor. The scan rate study is suggested that electro-oxidation of PA was adsorption-controlled. The pH study testifies the redox pathways transport with the same quantity of electrons and protons. The detection limit of PA is found to be 2.64 µM. DPV results show that substantial peak separation between PA, folic acid (FA), and dopamine (DA) could be facilitating their individual and simultaneous determination on the sensor. The decorated sensor demonstrates high sensitivity, stability, reproducibility, repeatability and has been successfully exploited for the detection of PA in a tablet with promising results.


2018 ◽  
Vol 42 (8) ◽  
pp. 6161-6167 ◽  
Author(s):  
Atika Farhi ◽  
Farha Firdaus ◽  
Mohammad Shakir

A simple and cost effective tris 2(amino ethyl) amine based chemosensor is synthesized via a single-step procedure.


2018 ◽  
Vol 10 (38) ◽  
pp. 4689-4694 ◽  
Author(s):  
Girma Selale Geleta ◽  
Zhen Zhao ◽  
Zhenxin Wang

A cost effective, environmentally friendly and disposable PAM/PA/PDA hydrogel based electrochemical aptasensor has been developed for sensitive and selective detection of Aflatoxin B2.


2021 ◽  
Author(s):  
SAVITHA D P ◽  
Deepa Sebastian ◽  
Anjali Krishna G ◽  
P. V. Mohanan

A novel schiff base ligand 3-(2-Amino-4, 5-dimethyl-phenylimino)-5-phenyl-1, 3-dihydro-indol-2-one (MPD 5MI) and was characterized using spectroscopic methods including UV visible, Infrared, 1H-NMR, 13C-NMR and mass spectrometry. The essential fluorescence properties such...


2021 ◽  
Author(s):  
Srikanth Ponnada ◽  
Demudu Babu Gorle ◽  
Maryam Sadat Kiai ◽  
R. Saravanakumar ◽  
Rakesh Kumar Sharma ◽  
...  

The dopamine has serious concern with respect to neurological disorders like Alzheimer’s etc. hence there is a necessity for selective detection of dopamine concentrations in blood. In this work we...


RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24328-24337 ◽  
Author(s):  
Kamlesh Shrivas ◽  
Nidhi Nirmalkar ◽  
Santosh Singh Thakur ◽  
Ramsingh Kurrey ◽  
Deepak Sinha ◽  
...  

We report a simple, selective and cost effective method for the qualitative and quantitative determination of thymine in a DNA standard and in urine samples using gold nanoparticles (AuNPs) as a label-free colorimetric biochemical sensor.


Polyhedron ◽  
2021 ◽  
pp. 115460
Author(s):  
Virender ◽  
Brij Mohan ◽  
Sandeep Kumar ◽  
Krunal Modi ◽  
Abdul Hakeem Deshmukh ◽  
...  

Author(s):  
Lawrence M. Roth

The female reproductive tract may be the site of a wide variety of benign and malignant tumors, as well as non-neoplastic tumor-like conditions, most of which can be diagnosed by light microscopic examination including special stains and more recently immunoperoxidase techniques. Nevertheless there are situations where ultrastructural examination can contribute substantially to an accurate and specific diagnosis. It is my opinion that electron microscopy can be of greatest benefit and is most cost effective when applied in conjunction with other methodologies. Thus, I have developed an approach which has proved useful for me and may have benefit for others. In cases where it is deemed of potential value, glutaraldehyde-fixed material is obtained at the time of frozen section or otherwise at operation. Coordination with the gynecologic oncologist is required in the latter situation. This material is processed and blocked and is available if a future need arises.


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