@article {46050, title = {AgQDs employing black box synthetic strategy: photocatalytic and biological behavior}, journal = {Journal of Luminescence}, volume = {212}, year = {2019}, month = {AUG}, pages = {133-140}, type = {Article}, abstract = {

This investigation relates FRET, photocatalytic and a biological study of AgQDs which found to be dependent on particle size and capping agent used. Surface of AgQDs was one of the most important factors that govern its activity. AgQDs with BSA binding was systematically studied by fluorescence quenching and electrostatic interaction. AgQDs mainly interacted to site II of BSA, binding distance r evaluated according to the FRET theory and was 4.6 nm for AgQDs, which suggested transfer of energy (non-radioactive) between surface modified AgQDs and biological molecule BSA. The photocatalytic activity of AgQDs for the appreciable degradation of erythrosine dye using Ultraviolet-B light was investigated. AgQDs showed specific antibacterial activity against E. coli bacterial stain. Quantum dots displayed a pronounced and specific activity causing \> 50\% growth of COLO-205 and MCF-7 human cancer Cells at concentrations \< 10(-7 )M. Hence, present black box synthetic protocol of AgQDs could be life science application.

}, keywords = {AgQDs, Black box, COLO-205, Photocatalytic}, issn = {0022-2313}, doi = {10.1016/j.jlumin.2019.04.014}, author = {Pansare, Amol V. and Shedge, Amol A. and Chhatre, Shraddha Y. and Das, Debabrata and Murkute, Punam and Pansare, Shubham V. and Nagarkar, Amit A. and Patil, Vishwnath R. and Chakrabarti, S.} } @article {46655, title = {Nanocomposite of functional silver metal containing curcumin biomolecule model systems: Protein BSA bioavailability}, journal = {Journal of Inorganic Biochemistry}, volume = {212}, year = {2020}, month = {NOV}, pages = {111210}, type = {Article}, abstract = {

Curcumin, a constituent of Curcuma longa L-Zingiberaceae is used in traditional Indian and worldwide medicine and shows anticancer and antioxidant properties. Curcumin has numerous biological and pharmacological ac-tivities but due to its hydrophobic nature, the major drawback is poor absorption and rapid elimination, rendering curcumin with the tag of a poor biomaterial. Hence, there is a need to develop functional metal containing curcumin model systems (FMCCMS) as a metallo-biomolecule to enhance the bioavailability of curcumin. We designed the interaction of silver metal ion with curcumin to form curcumin-silver nanocomposite (CURC-AgNCP) via ultrasonic synthetic route. Formations of FMCCMS were characterized by spectroscopic techniques. The crystalline face-centered cubic pattern and particle size of the nanocomposite was evaluated using X-ray diffraction and high-resolution transmission electron microscopy. The bonding of silver metal to curcumin was confirmed by X-ray photon spectroscopy. Interaction of the nanocomposite with bovine serum albumin (BSA) protein was performed using excitation, emission, and circular dichroism spectroscopy. In binding interaction of BSA, the negative value of Delta S degrees (-358.04 J mol(-1) K-1) and Delta H degrees (-129.42 KJ mol(-1)) demonstrates the hydrophilic nature of the nanocomposite. The binding distance r evaluated according to the Forster resonance energy transfer theory and was 4.69 nm for CURC-AgNCP, which suggested non-radiative transfer of energy between CURC-AgNCP and BSA. The role of FMCCMS metallo-biomolecule CURC-AgNCP in medicine for cancer activity can have immense importance and hence we performed Sulphorhodamine B based in-vitro cytotoxicity assay on human breast cancer Michigan Cancer Foundation-7 cell line.

}, keywords = {Ag-based CURC biomaterials, Breast cancer, Metal in medicine, Metallobiomolecules, Nanocomposite}, issn = {0162-0134}, doi = {10.1016/j.jinorgbio.2020.111210}, author = {Shedge, Amol A. and Pansare, Shubham V. and Khairkar, Shyam R. and Chhatre, Shraddha Y. and Chakrabarti, S. and Nagarkar, Amit A. and Pansare, Amol V. and Patil, Vishwanath R.} } @article {49927, title = {X-ray fluorescence-based spray-on {\textquoteleft}{\textquoteleft}elemental barcodes{\textquoteright}{\textquoteright}}, journal = {Advanced Materials Technologies}, volume = {10}, year = {2025}, month = {JUL}, pages = {2401687}, type = {Article}, abstract = {

A novel spray-on elemental barcode technology is reported for the secure, permanent, and tamper-proof identification of polymeric and fiber-reinforced composite materials. This system utilizes the in situ reduction of metal salts to nanoparticles embedded within a polymer matrix, creating a unique barcode that is detectable through X-ray fluorescence (XRF). The barcode{\textquoteright}s composition is based on the metallic nanoparticle mixture and offers a semi-quantitative, non-destructive, and thermally stable method for material authentication. The process is straightforward, involving the manual application of metal salt solutions followed by mild heating, ensuring no significant alteration to the material{\textquoteright}s properties. The barcodes can be read through protective coatings or paints and are robust even under extreme conditions, such as high temperatures. This low-cost method does not introduce additional manufacturing steps and demonstrates significant potential for anti-counterfeiting and lifecycle tracking in various industries. Moreover, with an information density of up to 12 bits mm-1, this elemental barcode significantly surpasses the data storage capabilities of traditional optical barcodes. This approach holds promise for broad substrate applicability and can be expanded to other metals and reduction protocols, making it versatile for diverse material applications.

}, keywords = {authentication, barcoding, embedded nanoparticles, epoxy thermosets, fiber-reinforced composite, in situ reduction}, issn = {2365-709X}, doi = {10.1002/admt.202401687}, author = {Pansare, Amol V. and Terrasi, Giovanni P. and Pansare, Shubham V. and Khairkar, Shyam and Shedge, Amol A. and Zote, Santosh W. and Chhatre, Shraddha and Barbezat, Michael and Patil, Vishwanath R. and Nagarkar, Amit A.} }