Dr Prashant Kumar's Outputs (13)

A Model for Flux Rope Formation and Disconnection in Pseudostreamer Coronal Mass Ejections (2024)
Journal Article
Wyper, P. F., Lynch, B. J., DeVore, C. R., Kumar, P., Antiochos, S. K., & Daldorff, L. K. S. (2024). A Model for Flux Rope Formation and Disconnection in Pseudostreamer Coronal Mass Ejections. The Astrophysical Journal, 975(2), Article 168. https://doi.org/10.3847/1538-4357/ad7941

Coronal mass ejections (CMEs) from pseudostreamers represent a significant fraction of large-scale eruptions from the Sun. In some cases, these CMEs take a narrow jet-like form reminiscent of coronal jets; in others, they have a much broader fan-shap... Read More about A Model for Flux Rope Formation and Disconnection in Pseudostreamer Coronal Mass Ejections.

Local DNA microviscosity converts ruthenium polypyridyl complexes to ultrasensitive photosensitizers (2021)
Journal Article
Kumar, P., Chandra, F., Laha, P., P., K., Patra, S., & Lal Koner, A. (2021). Local DNA microviscosity converts ruthenium polypyridyl complexes to ultrasensitive photosensitizers. Journal of Molecular Liquids, 344, Article 117788. https://doi.org/10.1016/j.molliq.2021.117788

In this manuscript, we have reported how DNA binding of ruthenium polypyridyl complexes (RPCs) make them more efficient photosensitizer. The DNA binding of RPCs results in a significant enhancement of their emission intensity and excited-state lifeti... Read More about Local DNA microviscosity converts ruthenium polypyridyl complexes to ultrasensitive photosensitizers.

High ensemble concentration of photo-stable NV centers in Type Ib nanodiamonds by thermal assisted migration of native vacancies (2021)
Journal Article
Kumar, R., Singh, D. K., Kumar, P., Trinh, C. T., Lee, K.-G., Kumar, R., & Dhakate, S. (2021). High ensemble concentration of photo-stable NV centers in Type Ib nanodiamonds by thermal assisted migration of native vacancies. Diamond and Related Materials, 114, Article 108337. https://doi.org/10.1016/j.diamond.2021.108337

Ion implantation and subsequent vacuum annealing is a conventional technique to fabricate nitrogen vacancy (NV) centers in nanodiamonds (NDs) for different applications where high emission collection is required. In this work, we have explored as-gro... Read More about High ensemble concentration of photo-stable NV centers in Type Ib nanodiamonds by thermal assisted migration of native vacancies.

Fast tyrosinase detection in early stage melanoma with nanomolar sensitivity using a naphthalimide-based fluorescent read-out probe (2020)
Journal Article
Kumar, P., Biswas, S., & Koner, A. L. (2020). Fast tyrosinase detection in early stage melanoma with nanomolar sensitivity using a naphthalimide-based fluorescent read-out probe. New Journal of Chemistry, 44(26), 10771-10775. https://doi.org/10.1039/d0nj02256j

Naphthalimide-based red-emitting fluorescent read-out probes are developed for expeditious and sensitive detection of tyrosinase activity in live-cells. The probes show excellent photostability, pH-tolerance, specificity among several bio-analytes, n... Read More about Fast tyrosinase detection in early stage melanoma with nanomolar sensitivity using a naphthalimide-based fluorescent read-out probe.

Deciphering interior polarity of lysosome in live cancer and normal cells using spectral scanning microscopy (2020)
Journal Article
Pal, K., Kumar, P., & Koner, A. L. (2020). Deciphering interior polarity of lysosome in live cancer and normal cells using spectral scanning microscopy. Journal of Photochemistry and Photobiology B: Biology, 206, Article 111848. https://doi.org/10.1016/j.jphotobiol.2020.111848

A lysosome specific, pH tolerant, and polarity-sensitive fluorescent probe (LyPol) is designed and synthesized for the determination of lysosomal polarity in live cells. LyPol possesses an intramolecular charge transfer (ICT) properties with high qua... Read More about Deciphering interior polarity of lysosome in live cancer and normal cells using spectral scanning microscopy.

A metabolomics footprint approach to understanding the benefits of synbiotics in functional foods and dietary therapeutics for health, communicable and non-communicable diseases (2019)
Journal Article
Cukkemane, A., Kumar, P., & Sathyamoorthy, B. (2020). A metabolomics footprint approach to understanding the benefits of synbiotics in functional foods and dietary therapeutics for health, communicable and non-communicable diseases. Food Research International, 128, 108679. https://doi.org/10.1016/j.foodres.2019.108679

Gut microbiota have been shown to affect various cellular and host response elements such as immunological, neurological, energy, storage, etc. In recent years, this has led to rapid expansion in dietary products containing probiotics, prebiotics and... Read More about A metabolomics footprint approach to understanding the benefits of synbiotics in functional foods and dietary therapeutics for health, communicable and non-communicable diseases.

Influence of degree of air oxidation and functionality on ensemble emission from nitrogen vacancy centers in nano-diamonds (2019)
Journal Article
Kumar, R., Singh, D. K., Kumar, P., Kumar, R., & Dhakate, S. (2019). Influence of degree of air oxidation and functionality on ensemble emission from nitrogen vacancy centers in nano-diamonds. Diamond and Related Materials, 97, Article 107431. https://doi.org/10.1016/j.diamond.2019.05.016

Oxygen functionalities in Nano-diamonds (NDs) are accepted as emission and photo-stability enhancer of nitrogen vacancy (NV) centers. In this direction, we have investigated the effect of functional groups and oxygen content on emission and stability... Read More about Influence of degree of air oxidation and functionality on ensemble emission from nitrogen vacancy centers in nano-diamonds.

Freeze-Resistant Cadmium-Free Quantum Dots for Live-Cell Imaging (2019)
Journal Article
Mallick, S., Kumar, P., & Koner, A. L. (2019). Freeze-Resistant Cadmium-Free Quantum Dots for Live-Cell Imaging. ACS Applied Nano Material, 2(2), 661-666. https://doi.org/10.1021/acsanm.8b02231

Exploration of dynamic self-assembly mediated nanoparticle formation using perylenemonoimide–pyrene conjugate: a tool towards single-component white-light emission (2018)
Journal Article
Kapuria, N., Sharma, V., Kumar, P., & Koner, A. L. (2018). Exploration of dynamic self-assembly mediated nanoparticle formation using perylenemonoimide–pyrene conjugate: a tool towards single-component white-light emission. Journal of Materials Chemistry C Materials for optical and electronic devices, 6(42), 11328-11335. https://doi.org/10.1039/c8tc03730b

The formulation of fluorescent organic nanoparticles in an easy and cost-effective way is the desideratum. We have provided a solution by devising fluorescent nanoparticles via dynamic self-assembly of perylenemonoimide appended pyrene (PMIAPy) in a... Read More about Exploration of dynamic self-assembly mediated nanoparticle formation using perylenemonoimide–pyrene conjugate: a tool towards single-component white-light emission.

Encapsulation and modulation of protolytic equilibrium of β-carboline-based norharmane drug by cucurbit[7]uril and micellar environments for enhanced cellular uptake (2018)
Journal Article
Chandra, F., Kumar, P., & Koner, A. L. (2018). Encapsulation and modulation of protolytic equilibrium of β-carboline-based norharmane drug by cucurbit[7]uril and micellar environments for enhanced cellular uptake. Colloids and Surfaces B: Biointerfaces, 171, 530-537. https://doi.org/10.1016/j.colsurfb.2018.07.061

The effect of supramolecular nanocavity on photophysical and acid-dissociation properties of Norharmane (NHM), a physiologically important, anxiety control and memory-enhancing β-carboline-based drug, has been investigated using steady-state absorpti... Read More about Encapsulation and modulation of protolytic equilibrium of β-carboline-based norharmane drug by cucurbit[7]uril and micellar environments for enhanced cellular uptake.

Selective sensing of lysosomal iron(III) via three-component fluorescence-based strategy in living cells (2018)
Journal Article
Biswas, S., Sharma, V., Kumar, P., & Koner, A. L. (2018). Selective sensing of lysosomal iron(III) via three-component fluorescence-based strategy in living cells. Sensors and Actuators B: Chemical, 260, 460-464. https://doi.org/10.1016/j.snb.2018.01.011

Iron-rich lysosomal compartment causes a significant amount of cellular damage. A lysosome targetable, pH sensitive fluorescent chemosensor based on naphthalimide dye containing a catechol and morpholine moiety has been synthesized, which selectively... Read More about Selective sensing of lysosomal iron(III) via three-component fluorescence-based strategy in living cells.

A fluorogenic probe for in vitro and in vivo detection of biothiols and vitamin-C with an in-depth mechanistic understanding (2017)
Journal Article
Biswas, S., Pal, K., Kumar, P., & Koner, A. L. (2018). A fluorogenic probe for in vitro and in vivo detection of biothiols and vitamin-C with an in-depth mechanistic understanding. Sensors and Actuators B: Chemical, 256, 186-194. https://doi.org/10.1016/j.snb.2017.10.061

Iridium Complexes as a Roadblock for DNA Polymerase during Amplification (2016)
Journal Article
Chandra, F., Kumar, P., Tripathi, S. K., Patra, S., & Koner, A. L. (2016). Iridium Complexes as a Roadblock for DNA Polymerase during Amplification. ChemMedChem, 11(13), 1410-1414. https://doi.org/10.1002/cmdc.201600101

Iridium-based metal complexes containing polypyridyl-pyrazine ligands show properties of DNA intercalation. They serve as roadblocks to DNA polymerase activity, thereby inhibiting the polymerization process. Upon the addition of increasing concentrat... Read More about Iridium Complexes as a Roadblock for DNA Polymerase during Amplification.