Sarthik Samanta
@myhr.com
Earth Science and Engineering
Missouri University of Science and Technology
EDUCATION
Postdoc : GGPE, Missouri University of Science and Technology, Rolla, USA (2023-2024)
PhD: India Institute of Technology Kharagpur, India (2017-2022)
M.Tech. in Polymer Science & Technology : University of Calcutta, India (2014-2016)
B.Tech. in Polymer Science & Technology: University of Calcutta, India (2011-2014)
B.Sc. in Chemistry:University of Calcutta, India (2007-2011)
RESEARCH, TEACHING, or OTHER INTERESTS
Chemistry, Organic Chemistry, Polymers and Plastics, Surfaces, Coatings and Films
FUTURE PROJECTS
Waterborne Luminescent Vitrimers via Pickering emulsion
Recyclability, weldability and high self-healing qualities are going to be present in the material that would have been synthesized. Within the scope of this research, environmentally friendly bio-based vitrimers will be produced from renewable resource. In addition, this project will completely meet the requirements of our society in terms of sustainability and reusability, which are the most important aspects of our economy's shift toward a circular model. The vitrimers will have reprocessable, self-healing and sustainable properties. The prepared vitrimers can be applied as a light-emitting diode, soft fluorescent materials etc.
Applications Invited
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Shrabana Sarkar, Sarthik Samanta, E. Bhoje Gowd, and Nikhil K. Singha
Royal Society of Chemistry (RSC)
Dual-healable fluorescent butyl rubber based on ionic interaction and dynamic (4 + 4) cycloaddition mechanisms.
Arunjunai R.S. Santha Kumar, Amrishkumar Padmakumar, Uddhab Kalita, Sarthik Samanta, Anshul Baral, Nikhil K. Singha, Muthupandian Ashokkumar, and Greg G. Qiao
Elsevier BV
Sarthik Samanta, Shrabana Sarkar, and Nikhil K. Singha
American Chemical Society (ACS)
In this hi-tech world, the "smart coatings" have sparked significant attention among materials scientists because of their versatile applications. Various strategies have been developed to generate smart coatings in the past 2 decades. The layer-by-layer (LbL) technique is the most commonly employed strategy to produce a smart coating for suitable applications. Here, we present a smart coating with healing, antifogging, and fluorescence properties fabricated by the LbL assembly of an anionic amphiphilic block copolymer latex and cationic inorganic POSS (polyhedral-oligomeric-silsesquioxane) nanoparticles. In this case, a new anionic block copolymer (BCP), {poly(sodium styrene sulfonate)-block-poly[2-(acetoacetoxy)ethyl methacrylate]}, (PSS-b-PAAEMA) was synthesized via surfactant-free RAFT-mediated emulsion polymerization using the PISA technique. The PSS-b-PAAEMA was characterized by 1H NMR, dynamic light scattering, scanning electron microscopy, and transmission electron microscopy analyses as well as by UV-vis and photoluminescence spectroscopy. For LbL coating fabrication, an amine-modified glass was successively dipped in the anionic latex and cationic POSS solution. The transparent coating exhibited good fluorescence properties under UV light (blue color). The antifogging performance of the coating was also investigated using both cold-warm and hot-vapor techniques. Additionally, the coating surface showed a significant healing activity with a healing efficiency of >75% through ionic interaction. Thus, this finding provides a simple low volatile organic compound (VOC) water-based LbL coating with multifunctional properties that can be a potential material for versatile applications.
Koushik Bhattacharya, Moumita Kundu, Subhayan Das, Sarthik Samanta, Sib Sankar Roy, Mahitosh Mandal, and Nikhil K. Singha
Wiley
AbstractDevelopment of fluorescent imaging probes is an important topic of research for the early diagnosis of cancer. Based on the difference between the cellular environment of tumor cells and normal cells, several “smart” fluorescent probes have been developed. In this work, a glycopolymer functionalized Förster resonance energy transfer (FRET) based fluorescent sensor is developed, which can monitor the pH change in cellular system. One‐pot sequential reversible addition‐fragmentation chain transfer (RAFT)polymerization technique is employed to synthesize fluorescent active triblock glycopolymer that can undergo FRET change on the variation of pH. A FRET pair, fluorescein o‐acrylate (FA) and 7‐amino‐4‐methylcoumarin (AMC) is linked via a pH‐responsive polymer poly [2‐(diisopropylamino)ethyl methacrylate] (PDPAEMA), which can undergo reversible swelling/deswelling under acidic/neutral condition. The presence of glycopolymer segment provides stability, water solubility, and specificity toward cancer cells. The cellular FRET experiments on cancer cells (MDA MB 231) and normal cells (3T3 fibroblast cells) demonstrate that the material is capable of distinguishing cells as a function of pH change.
Girish Mirchandani, Sachin Basutkar, Venugopal B. Raghavendra, Sarthik Samanta, Ritesh Bhavsar, Subarna Shyamroy, and Nikhil K. Singha
Wiley
AbstractA superhydrophobic coating, free of fluorinated and siloxane materials, has been prepared via reactive compatibilization of all organic blends of hydrophilic and hydrophobic materials. In this case, styrene acrylic emulsion and a combination of hydrophobic waxes (functional rice bran wax and functional polypropylene wax) are blended together in the presence of polycarbodiimide as the reactive compatibilizer. The effect of blending and crosslinking on surface morphology is studied by Fourier transform infrared spectroscopy analysis, microscopy analyses (SEM and AFM), contact angle, and surface energy measurements. After heat treatment and crosslinking, synergistic improvements of surface properties with a gradual trend toward superhydrophobicity are observed (water contact angle ≈144° and roll‐off angle of <10°). The system is free of nanoparticles, and the desired surface morphology and microstructure is formed from the mixture of renewable (rice bran) wax and petrochemical (polypropylene) wax. These coatings are shown to have easy‐cleaning as well as self‐cleaning characteristics. Further, the coatings can withstand exposure to solvents as well as mechanical abrasion.
Sarthik Samanta, Sovan Lal Banerjee, Koushik Bhattacharya, and Nikhil K Singha
American Chemical Society (ACS)
Epoxy-based adhesives have gotten significant attention in the conservation of antiquities and repair or reconstruction of artifacts due to their excellent adhesion strength. However, it has become hard to detect repaired work in artifacts due to the transparent nature of epoxy-based adhesives. Hence, the making of fluorescent adhesives has become an exciting topic for art conservators. Here, we have synthesized a new kind of waterborne epoxy-based fluorescent adhesive decorated with graphene quantum dots (GQDs) via reversible addition-fragmentation chain transfer (RAFT)-mediated surfactant-free miniemulsion polymerization. In this case, a new block copolymer (BCP), poly(1-vinyl-2-pyrrolidone)-block-poly(glycidyl methacrylate), has been synthesized via surfactant-free RAFT-mediated miniemulsion polymerization using a polymerization-induced self-assembly technique. The GQDs were prepared from citric acid by a hydrothermal process, and this was used for making a fluorescence-active BCP/GQD nanocomposite emulsion. The obtained BCP/GQD nanocomposite adhesive was transparent and showed blue fluorescence under ultraviolet-visible light, indicating the easy detection of its mark on the artifacts. The BCP and BCP/GQD emulsions were applied to adhere ceramic and glass substrates, and their adhesion strength was evaluated by lap shear tests. The BCP/GQDs showed better adhesion strength than the BCP only, indicating better adhesive performance. Additionally, the synthesis process was carried out in aqueous media, indicating the sustainability and environment-friendliness of the process. We believe that this kind of new waterborne epoxy-based fluorescent adhesive will provide a new contrivance among art conservators to repair or reconstruct artifacts.
Girish Mirchandani, Sarthik Samanta, Venugopal B. Raghavendra, Sumit Chaudhary, Sachin Baustkar, Subarna Shyamroy, and Nikhil K. Singha
Elsevier BV
Uddhab Kalita, Sarthik Samanta, Sovan Lal Banerjee, Narayan C. Das, and Nikhil K. Singha
American Chemical Society (ACS)
In recent years, there has been a great interest in preparing polymers from bioresources, as this practice has several advantages over petrobased polymers. Thermoplastic elastomers (TPEs) are an in...
Saikat Paul, Sovan Lal Banerjee, Moumita Khamrai, Sarthik Samanta, Shreya Singh, Patit Paban Kundu, and Anup K. Ghosh
Elsevier BV
Sovan Lal Banerjee, Sarthik Samanta, Shrabana Sarkar, and Nikhil K. Singha
Royal Society of Chemistry (RSC)
We have prepared an antifouling and self-healable PDMS based hydrogel which consists of a mixture of curcumin loaded zwitterionic PDMS polymersomes and amine functionalized PDMS polymersomes prepared via RAFT polymerization and Schiff-base reaction.
Sarthik Samanta, Sovan Lal Banerjee, Swapan K. Ghosh, and Nikhil K. Singha
American Chemical Society (ACS)
The present investigation deals with the development of an acrylic-based polymeric emulsion that offers multifunctional properties such as superhydrophobic, antimicrobial, anti-icing and self-cleaning. The said multifunctional waterborne emulsion was prepared via a surfactant-free reversible addition-fragmentation chain transfer (RAFT) polymerization technique. To accomplish this, a new class of ABC type triblock copolymer (PMTAC-b-PBA-b-PIBA) based on 2-(methcryloyloxy) ethyl ammonium chloride (MTAC), n-butyl acrylate (BA) and isobornyl acrylate (IBA) was synthesized via polymerization induced self-assembly (PISA) technique in a surfactant-free miniemulsion process. The cationic polymer, PMTAC was used as a macro-RAFT agent to prepare the rest of the blocks in the presence of nanosize monodisperse colloidal silica particles leading to raspberry-like morphology via ionic interaction between anionic silica particles and the cationic block copolymer (BCP). A water contact angle (WCA) of more than 150o was achieved for the emulsion coating after the fluorosilane treatment which delineates its superhydrophobic nature. The prepared emulsion showed antimicrobial property both in Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. The resultant BCP emulsion was coated over different substrates like glass, paper, and cotton and the coating material showed anti-icing and self-cleaning properties.
Koushik Bhattacharya, Sovan Lal Banerjee, Subhayan Das, Sarthik Samanta, Mahitosh Mandal, and Nikhil K. Singha
American Chemical Society (ACS)
A well-defined glycopolymer based fluorescence active nanogel has been prepared via the combination of reversible addition-fragmentation chain transfer (RAFT) polymerization and Diels-Alder (DA) "click" chemistry. To prepare the nanogel, initially, a functional AB block copolymer (BCP) poly(pentafluorophenyl acrylate)-b-poly(furfuryl methacrylate) (PPFPA-b-PFMA), having activated pentafluorophenyl ester group, was synthesized via RAFT polymerization. The activated pentafluorophenyl functionality was replaced by the amine functionality of glucosamine to introduce the amphiphilic BCP poly[2-(acrylamido) glucopyranose]-b-poly(furfuryl methacrylate) (PAG-b-PFMA). Furthermore, the terminal acid (-COOH) functionality of the RAFT agent was modified by gelatin QDs (GQDs) to generate fluorescence active glycopolymer. An anticancer drug, Doxorubicin, was loaded in the micelle via the successive addition of the drug molecule and cross-linking using dithio-bismaleimidoethane (DTME), a REDOX responsive cross-linker. The anticancer activity of the drug loaded nanogel was observed over MBA-MD-231, human breast cancer cell line, and monitored via fluorescence spectroscopy and flow cytometric analyses (FACS). The cytotoxicity of the prepared glycopolymer based nanogel over the MBA-MD-231 cell line was assessed via MTT assay test, and it was observed that the synthesized nanogel was noncytotoxic in nature.
Moumita Khamrai, Sovan Lal Banerjee, Saikat Paul, Sarthik Samanta, and Patit Paban Kundu
Elsevier BV
Sovan Lal Banerjee, Koushik Bhattacharya, Sarthik Samanta, and Nikhil K. Singha
American Chemical Society (ACS)
A self-healable antifouling hydrogel based on zwitterionic block copolymer was prepared via reversible addition-fragmentation chain transfer polymerization and Diels-Alder "click" chemistry. The hydrogel consists of a core-cross-linked zwitterionic block copolymer having poly(furfuryl methacrylate) as core and poly(dimethyl-[3-(2-methyl-acryloylamino)-propyl]-(3-sulfopropyl)ammonium) (poly(sulfobetaine)) as shell. The core was cross-linked with dithiobismaleimidoethane. The block copolymers were characterized by dynamic light scattering, field emission scanning electron microscopy, high-resolution transmission electron microscopy, atomic force microscopy (AFM), differential scanning calorimetry, water contact angle, and small-angle X-ray scattering analyses. This zwitterionic hydrogel showed self-healing activity via combined effect of phototriggered dynamic disulfide metathesis reaction and zwitterionic interaction, which was monitored by optical microscopy and AFM depth profilometry. The mechanical properties of the hydrogel before and after self-healing were studied using depth-sensing nanoindentation method. It was observed that the prepared zwitterionic hydrogel could reduce the formation of biofilm, which was established by studying the bovine serum albumin (model protein) adsorption over the coating. This multifunctional hydrogel can pave a new direction in antifouling self-healable gel coating applications.
RECENT SCHOLAR PUBLICATIONS
MOST CITED SCHOLAR PUBLICATIONS
RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)
Kalita, Uddhab, Samanta, Sarthik, Singha, Nikhil K. Bio-Based Thermoplastic Elastomer Based on ABA Triblock Copolymer Using Bio-Resourced Conjugated Diene via Emulsion Polymerization; Patent Application No. 202131004329 dated 01-Feb-2021 (IIT Kharagpur).
Industry, Institute, or Organisation Collaboration
(1) Asian Paints (Industry)
(2) University of Melbourne
INDUSTRY EXPERIENCE
(1) Birla Tyres (3 months)
(2) Asian Paints (2 months)