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  1. Article ; Online: Insights into the Oxidation State of Cu Dopants in II-VI Semiconductor Nanocrystals.

    Mondal, Payel / Viswanatha, Ranjani

    The journal of physical chemistry letters

    2022  Volume 13, Issue 8, Page(s) 1952–1961

    Abstract: Luminescent Cu-doped semiconductor nanocrystals have played a pivotal role in the emergence of lighting and display applications for a long time. However, consensus regarding the Cu oxidation state and hence their emission mechanism has not been attained. ...

    Abstract Luminescent Cu-doped semiconductor nanocrystals have played a pivotal role in the emergence of lighting and display applications for a long time. However, consensus regarding the Cu oxidation state and hence their emission mechanism has not been attained. Distinction between seemingly simple optically and magnetically active Cu
    Language English
    Publishing date 2022-02-21
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.1c04076
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A new fluorescent probe for sensing Al

    Bhowmick, Rahul / Mondal, Payel / Chattopadhyay, Pabitra

    RSC advances

    2023  Volume 13, Issue 5, Page(s) 3394–3401

    Abstract: An AIE (aggregation induced emission) active probe DFP-AMQ was designed and synthesized as a hexa-coordinated ... ...

    Abstract An AIE (aggregation induced emission) active probe DFP-AMQ was designed and synthesized as a hexa-coordinated N
    Language English
    Publishing date 2023-01-24
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d2ra06978d
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  3. Article ; Online: Electronic structure study of dual-doped II-VI semiconductor quantum dots towards single-source white light emission.

    Mondal, Payel / Sathiyamani, Sowmeya / Das, Subham / Viswanatha, Ranjani

    Nanoscale

    2023  Volume 15, Issue 37, Page(s) 15288–15297

    Abstract: Single-source white light emitting colloidal semiconductor quantum dots (QDs) is one of the most exciting and promising high-quality solid-state light sources to meet the current global demand for sustainable resources. While most of the previous methods ...

    Abstract Single-source white light emitting colloidal semiconductor quantum dots (QDs) is one of the most exciting and promising high-quality solid-state light sources to meet the current global demand for sustainable resources. While most of the previous methods involve dual (green-red) emissive nanostructures coated on blue LEDs to achieve white light, this work describes a single-source white light emitter of robust and superior quality using dual-doping. A modified synthesis method for intense white light emitting Cu, Mn dual-doped ZnSe QDs is engineered such that the extent of doping and concentration of ligands can alter their electronic structures. This is then customized to obtain various types of white light emissions ranging from warm white to cool white. Further, the composition-driven change in the electronic structure of the host QDs is exploited to achieve emission tunability over the entire visible range.
    Language English
    Publishing date 2023-09-29
    Publishing country England
    Document type Journal Article
    ZDB-ID 2515664-0
    ISSN 2040-3372 ; 2040-3364
    ISSN (online) 2040-3372
    ISSN 2040-3364
    DOI 10.1039/d3nr03542e
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  4. Article ; Online: Proteomic analysis and protein structure prediction of Shigella phage Sfk20 based on a comparative study using structure prediction approaches.

    Mallick, Bani / Dutta, Aninda / Mondal, Payel / Dutta, Moumita

    Proteins

    2023  Volume 92, Issue 5, Page(s) 637–648

    Abstract: Bacteriophages are the natural predators of bacteria and are available abundantly everywhere in nature. Lytic phages can specifically infect their bacterial host (through attachment to the receptor) and use their host replication machinery to replicate ... ...

    Abstract Bacteriophages are the natural predators of bacteria and are available abundantly everywhere in nature. Lytic phages can specifically infect their bacterial host (through attachment to the receptor) and use their host replication machinery to replicate rapidly, a feature that enables them to kill a disease-causing bacteria. Hence, phage attachment to the host bacteria is the first important step of the infection process. It is reported in this study that the receptor could be an LPS which is responsible for the attachment of the Sfk20 phage to its host (Shigella flexneri 2a). Phage Sfk20 bacteriolytic activity was examined for preliminary optimization of phage titer. The phage Sfk20 viability at different saline conditions was conducted. The LC-MS/MS technique used here for detecting and identifying 40 Sfk20 phage proteins helped us to get an initial understanding of the structural landscape of phage Sfk20. From the identified proteins, six structurally significant proteins were selected for structure prediction using two neural network systems: AlphaFold2 and ESMFold, and one homology modeling software: Phyre2. Later the performance of these modeling systems was compared using various metrics. We conclude from the available and generated information that AlphaFold2 and Phyre2 perform better than ESMFold for predicting Sfk20 phage protein structures.
    MeSH term(s) Bacteriophages/genetics ; Proteomics ; Chromatography, Liquid ; Tandem Mass Spectrometry ; Shigella ; Bacteria
    Language English
    Publishing date 2023-12-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 806683-8
    ISSN 1097-0134 ; 0887-3585
    ISSN (online) 1097-0134
    ISSN 0887-3585
    DOI 10.1002/prot.26653
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2291: Show issues Location:
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  5. Article ; Online: Beyond mitophagy: mitochondrial-derived vesicles can get the job done!

    Mondal, Payel / Towers, Christina

    Autophagy

    2021  Volume 18, Issue 2, Page(s) 449–451

    Abstract: Mitochondria are critical organelles that maintain cellular metabolism and overall function. The catabolic pathway of autophagy plays a central role in recycling damaged mitochondria. Although the autophagy pathway is indispensable for some cancer cell ... ...

    Abstract Mitochondria are critical organelles that maintain cellular metabolism and overall function. The catabolic pathway of autophagy plays a central role in recycling damaged mitochondria. Although the autophagy pathway is indispensable for some cancer cell survival, our latest study shows that rare autophagy-dependent cancer cells can adapt to loss of this core pathway. In the process, the autophagy-deficient cells acquire unique dependencies on alternate forms of mitochondrial homeostasis. These rare autophagy-deficient clones circumvent the lack of canonical autophagy by increasing mitochondrial dynamics and by recycling damaged mitochondria via mitochondrial-derived vesicles (MDVs). These studies are the first to implicate MDVs in cancer cell metabolism although many unanswered questions remain about this non-canonical pathway.
    MeSH term(s) Autophagy ; Humans ; Mitochondria/metabolism ; Mitochondrial Dynamics ; Mitophagy ; Neoplasms/metabolism ; Organelles/metabolism
    Language English
    Publishing date 2021-11-15
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2454135-7
    ISSN 1554-8635 ; 1554-8627
    ISSN (online) 1554-8635
    ISSN 1554-8627
    DOI 10.1080/15548627.2021.1999562
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    Zs.A 6741: Show issues Location:
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  6. Article: Isolation, characterization, and application of a novel polyvalent lytic phage STWB21 against typhoidal and nontyphoidal

    Mondal, Payel / Mallick, Bani / Dutta, Moumita / Dutta, Shanta

    Frontiers in microbiology

    2022  Volume 13, Page(s) 980025

    Abstract: ... ...

    Abstract Salmonella
    Language English
    Publishing date 2022-08-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2022.980025
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  7. Article ; Online: Production of Blending Quality Bioethanol from Broken Rice: Optimization of Process Parameters and Kinetic Modeling.

    Mondal, Payel / Sadhukhan, Anup Kumar / Ganguly, Amit / Gupta, Parthapratim

    Applied biochemistry and biotechnology

    2022  Volume 194, Issue 11, Page(s) 5474–5505

    Abstract: The enzymatic and bio-enzymatic saccharification of waste broken rice (79.8% of starch) was successfully carried out to produce a reducible sugar solution (160 g/L). Bioethanol of concentration 71.2 g/L (9.0% v/v) was prepared by fermentation of reducing ...

    Abstract The enzymatic and bio-enzymatic saccharification of waste broken rice (79.8% of starch) was successfully carried out to produce a reducible sugar solution (160 g/L). Bioethanol of concentration 71.2 g/L (9.0% v/v) was prepared by fermentation of reducing sugar solution, using the commercially available waste brewer's yeast (Saccharomyces cerevisiae). The fermentation process parameters were optimized through response surface methodology (RSM) and hybrid artificial neural network-genetic algorithm (ANN-GA) for optimizing the ethanol concentration. The hybrid ANN-GA model predicted a maximum concentration of 71.9 g/L with a deviation of only 0.97% from the experimental value (71.2 g/L). Four different kinetic models were attempted to fit the experimental time evolution of concentrations with the kinetic parameters estimated by the Levenberg-Marquardt optimization technique. The 4th order Runge-Kutta algorithm was implemented through a C program module. The accuracy of each model was checked against coefficient of determination R
    MeSH term(s) Oryza ; Kinetics ; Gasoline ; Ethanol ; Saccharomyces cerevisiae ; Starch ; Carbohydrates ; Sugars
    Chemical Substances Gasoline ; Ethanol (3K9958V90M) ; Starch (9005-25-8) ; Carbohydrates ; Sugars
    Language English
    Publishing date 2022-07-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 392344-7
    ISSN 1559-0291 ; 0273-2289
    ISSN (online) 1559-0291
    ISSN 0273-2289
    DOI 10.1007/s12010-022-03858-z
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    Zs.A 3053: Show issues Location:
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  8. Article ; Online: Morphological, biological, and genomic characterization of a newly isolated lytic phage Sfk20 infecting Shigella flexneri, Shigella sonnei, and Shigella dysenteriae1.

    Mallick, Bani / Mondal, Payel / Dutta, Moumita

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 19313

    Abstract: Shigellosis, caused by Shigella bacterial spp., is one of the leading causes of diarrheal morbidity and mortality. An increasing prevalence of multidrug-resistant Shigella species has revived the importance of bacteriophages as an alternative therapy to ... ...

    Abstract Shigellosis, caused by Shigella bacterial spp., is one of the leading causes of diarrheal morbidity and mortality. An increasing prevalence of multidrug-resistant Shigella species has revived the importance of bacteriophages as an alternative therapy to antibiotics. In this study, a novel bacteriophage, Sfk20, has been isolated from water bodies of a diarrheal outbreak area in Kolkata (India) with lytic activity against many Shigella spp. Phage Sfk20 showed a latent period of 20 min and a large burst size of 123 pfu per infected cell in a one-step growth analysis. Phage-host interaction and lytic activity confirmed by phage attachment, intracellular phage development, and bacterial cell burst using ultrathin sectioning and TEM analysis. The genomic analysis revealed that the double-stranded DNA genome of Sfk20 contains 164,878 bp with 35.62% G + C content and 241 ORFs. Results suggested phage Sfk20 to include as a member of the T4 myoviridae bacteriophage group. Phage Sfk20 has shown anti-biofilm potential against Shigella species. The results of this study imply that Sfk20 has good possibilities to be used as a biocontrol agent.
    MeSH term(s) Bacteriophage T4/genetics ; Bacteriophage T4/isolation & purification ; Bacteriophage T4/ultrastructure ; Dysentery, Bacillary/microbiology ; Dysentery, Bacillary/prevention & control ; Humans ; India ; Phage Therapy/methods ; Shigella/pathogenicity ; Shigella/virology ; Water Microbiology
    Language English
    Publishing date 2021-09-29
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-98910-z
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  9. Article ; Online: Controlling the bacterial load of Salmonella Typhi in an experimental mouse model by a lytic Salmonella phage STWB21: a phage therapy approach.

    Mondal, Payel / Halder, Prolay / Mallick, Bani / Bhaumik, Subhadip / Koley, Hemanta / Dutta, Shanta / Dutta, Moumita

    BMC microbiology

    2023  Volume 23, Issue 1, Page(s) 324

    Abstract: Background: Salmonella enterica serotype Typhi is one of the major pathogens causing typhoid fever and a public health burden worldwide. Recently, the increasing number of multidrug-resistant strains of Salmonella spp. has made this utmost necessary to ... ...

    Abstract Background: Salmonella enterica serotype Typhi is one of the major pathogens causing typhoid fever and a public health burden worldwide. Recently, the increasing number of multidrug-resistant strains of Salmonella spp. has made this utmost necessary to consider bacteriophages as a potential alternative to antibiotics for S. Typhi infection treatment. Salmonella phage STWB21, isolated from environmental water, has earlier been reported to be effective as a safe biocontrol agent by our group. In this study, we evaluated the efficacy of phage STWB21 in reducing the burden of salmonellosis in a mammalian host by inhibiting Salmonella Typhi invasion into the liver and spleen tissue.
    Results: Phage treatment significantly improved the survival percentage of infected mice. This study also demonstrated that oral administration of phage treatment could be beneficial in both preventive and therapeutic treatment of salmonellosis caused by S. Typhi. Altogether the result showed that the phage treatment could control tissue inflammation in mice before and after Salmonella infection.
    Conclusions: To the best of our knowledge, this is the first report of phage therapy in a mouse model against a clinically isolated Salmonella Typhi strain that includes direct visualization of histopathology and ultrathin section microscopy images from the liver and spleen sections.
    MeSH term(s) Animals ; Mice ; Salmonella typhi ; Phage Therapy ; Bacterial Load ; Typhoid Fever/therapy ; Typhoid Fever/microbiology ; Salmonella Infections/therapy ; Bacteriophages ; Salmonella Phages ; Mammals
    Language English
    Publishing date 2023-11-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041505-9
    ISSN 1471-2180 ; 1471-2180
    ISSN (online) 1471-2180
    ISSN 1471-2180
    DOI 10.1186/s12866-023-03040-3
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  10. Article: Is the Lack of Orange Emission Infallible Proof of Unsuccessful Doping of Mn in Quantum Dots?

    Mondal, Payel / Sathiyamani, Sowmeya / Gahlot, Kushagra / Viswanatha, Ranjani

    Journal of physical chemistry. 2021 May 14, v. 125, no. 20

    2021  

    Abstract: Manganese (Mn) is one of the most studied transition metal dopants to alter the optical properties of host semiconductor nanocrystals (NCs). In most cases, the doped NCs are characterized by an invariant broad photoluminescence (PL) spectrum at 2.12 eV. ... ...

    Abstract Manganese (Mn) is one of the most studied transition metal dopants to alter the optical properties of host semiconductor nanocrystals (NCs). In most cases, the doped NCs are characterized by an invariant broad photoluminescence (PL) spectrum at 2.12 eV. The nature of this emission, although thought to be atomic-like, has revealed several dependencies on the host NCs in recent literature that facilitates the energy/charge transfer to a spin and orbital forbidden channel. In this work, we study this transfer as a function of the host band gap and spin–orbit coupling. We demonstrate that while the energy/charge transfer is facilitated by the energy difference between the band gap and Mn excitation energy, the high spin–orbit coupling allows transfer and back transfer of energy/charge, thus giving rise to a tunable higher energy transition even in successful doping of Mn. We use low-temperature PL and gated PL to demonstrate this phenomenon.
    Keywords energy ; manganese ; nanocrystals ; photoluminescence ; physical chemistry ; semiconductors
    Language English
    Dates of publication 2021-0514
    Size p. 11007-11013.
    Publishing place American Chemical Society
    Document type Article
    Note NAL-AP-2-clean
    ISSN 1932-7455
    DOI 10.1021/acs.jpcc.1c00359
    Database NAL-Catalogue (AGRICOLA)

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