Search

Your search keyword '"Gopinath, Subash C. B."' showing total 21 results
Start Over Author "Gopinath, Subash C. B." Journal microchimica acta
21 results on '"Gopinath, Subash C. B."'

1. Tailoring molecularly imprinted polymer on titanium-multiwalled carbon nanotube functionalized gold electrode for enhanced chlorophyll determination in microalgae health assessment.

Author

Ramanathan, Santheraleka, Lau, Woei Jye, Goh, Pei Sean, Gopinath, Subash C. B., Rawindran, Hemamalini, Omar, Muhammad Firdaus, Ismail, Ahmad Fauzi, Breadmore, Michael C., and See, Hong Heng

Subjects
GOLD electrodes, CHLORELLA vulgaris, CARBON nanotubes, CRYSTAL structure, TITANIUM dioxide, IMPRINTED polymers
Abstract

A unique method for determining chlorophyll content in microalgae is devised employing a gold interdigitated electrode (G-IDE) with a 10-µm gap, augmented by a nano-molecularly imprinted polymer (nano-MIP) and a titanium dioxide/multiwalled carbon nanotube (TiO2/MWCNT) nanocomposite. The nano-MIP, produced using chlorophyll template voids, successfully trapped chlorophyll, while the TiO2/MWCNT nanocomposite, synthesized by the sol–gel technique, exhibited a consistent distribution and anatase crystalline structure. The rebinding of procured chlorophyll powder, which was used as a template for nano-MIP synthesis, was identified with a high determination coefficient (R2 = 0.9857). By combining the TiO2/MWCNT nanocomposite with nano-MIP, the G-IDE sensing method achieved a slightly better R2 value of 0.9892 for detecting chlorophyll in microalgae. The presented G-IDE sensor showed a significant threefold enhancement in chlorophyll detection compared with commercially available chlorophyll powder. It had a detection limit of 0.917 mL (v/v) and a linear range that spanned from 10-6 to 1 mL. The effectiveness of the sensor in detecting chlorophyll in microalgae was confirmed through validation of its repeatability and reusability. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

16. Voltammetric immunoassay for the human blood clotting factor IX by using nanogapped dielectrode junctions modified with gold nanoparticle-conjugated antibody

Author

Gopinath, Subash C. B., primary, Perumal, Veeradasan, additional, Rao, Balakrishnan S., additional, Md Arshad, M. K., additional, Voon, Chun Hong, additional, Lakshmipriya, Thangavel, additional, Haarindraprasad, R., additional, Vijayakumar, Thivina, additional, Chen, Yeng, additional, and Hashim, Uda, additional

Published
2017
Full Text
View/download PDF

21. Voltammetric determination of human papillomavirus 16 DNA by using interdigitated electrodes modified with titanium dioxide nanoparticles.

Author

Parmin, Nor A., Hashim, Uda, Gopinath, Subash C. B., Nadzirah, Sharipah, Rejali, Zulida, Afzan, Amilia, Uda, M. N. A., Hong, V. C., and Rajapaksha, R. D. A. A.

Subjects
TITANIUM dioxide nanoparticles, DNA, ELECTRODES, DNA probes, CARBOXYL group
Abstract

A gene sensor for rapid detection of the Human Papillomavirus 16 (HPV 16) which is associated with the appearance of cervical cancer was developed. The assay is based on voltammetric determination of HPV 16 DNA by using interdigitated electrodes modified with titanium dioxide nanoparticles. Titanium dioxide nanoparticles (NPs) were used to modify a semiconductor-based interdigitated electrode (IDE). The surface of the NPs was then functionalized with a commercial 24-mer oligomer DNA probe for HPV 16 that was modified at the 5′ end with a carboxyl group. If the probe interacts with the HPV 16 ssDNA, the current, best measured at a working voltage of 1.0 V, increases. The gene sensor has has a ∼ 0.1 fM limit of detection which is comparable to other sensors. The dielectric voltammetry analysis was carried out from 0 V to 1 V. The electrochemical sensitivity of the IDE is 2.5 × 10−5 μA·μM−1·cm−2. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results