Nature is a seamless designer to provide complex functional architectures through molecular self-assembly guided by out-of-equilibrium mechanism. Self-assembly hitherto performed in the lab under thermodynamic control results in a precise single state owing to minimalized Gibb’s free energy. In contrast, kinetic control over the self-assembly pathway allows to trap some of the intermediates over the trail of the process. Since 2015, we are trying to explore various method to kinetically control multi-step self-assembly using living supramolecular polymerization in our lab. Recently, we have been able to accomplish such pathway dependant self-assembly in amyloid inspired minimalistic peptide system to form 1D fiber, twisted bundle and 2D lamellar morphologies. Moreover, the nanostructures were precisely controlled in length and dimension via seeded supramolecular polymerization. Such functional systems were utilized for rendering a better mechanical strength control of resultant hydrogels, efficient MoS2 exfoliation, chiral self-sorting vs. co-assembly, organic catalysis etc.
Our reports in the field:
1. A. Singh et al. Chem. Commun., 2018, 54, 10730—10733.
2. J. P. Joseph et al. ACS Appl. Mater. Interfaces 2019, 11, 28213–28220.
3. D. Gupta et al. Nanoscale, 2020, 12, 18692-18700.
Nature has an unprecedented handle over the conformation and dynamics of its macromolecular morphologies. One of such examples is the finite arrangement of amino acids in the living system into a spatial organization through chain folding that can carry out specific functions like enzymatic catalysis in an extremely efficient way. These intricate structure-activity relationships observed in biopolymers like proteins inspired us to design synthetic macromolecular architectures by bottom-up approach. Since 2017, we have designed a number of single-chain functional polymers using a variety of polymer synthesis protocols such as ATRP, RAFT etc. This polymers endowed stimuli-responsive chain collapse to form precisely controlled nanoparticles, which by mediation of thermo-responsive copolymers is exploited towards thermal homeostasis of drug release. Currently, we are looking at interesting convertible nanostructures from precisely controlled segmented block-copolymers for targeted drug delivery applications.
Additionally, photofixation of functional moieties in the polymer modulate the glass transition temperature and resultant chain flow behaviour that have been utilized in low viscosity polymer film self-healing, that is being considered for coating application. Further, tweaking such polymers anchored with paramagnetic nanoparticles we are exploring different self-healing mechanism.
Our reports in the field:
1. J. P. Joseph et al. Soft Matter, 2020, 16, 2506-2515.
2. J. P. Joseph et al. Polym. Chem., 2021, 12, 1002-1013.
The development of synthetic biomimetic scaffolds that can provide cues for cell-matrix interfaces can dictate cell migration direction and stimulate tissue growth promises materials for next-generation artificial ECM mimetic biomatrix. In quest of designing such materials recently we developed organic-inorganic hybrid systems like peptide template bioglass materials which were utilised as self-healing bone tissue matrix for osteoblast cell growth. Currently, with our expertise in supramolecular chemistry, we are exploring the possibility of controlling mechanical insights such as dynamic mechanical stiffening and compression response of peptide-polymer conjugates as surrogate extracellular matrix materials.
Our report in the field:
1. N. Gupta et al. Chem. Mater. 2021, 33, 589–599.
Our report in the field:
1. J. P. Joseph et al. RSc Advances, 2019, 9, 19819-198272.
Development of chiral molecules on peptide and polymeric platforms that can be exploited for chiral sensing and recognition applications.
Our report in the field:
1. B. Sharma et al. New J. Chem., 2018, 42, 6427-6432.
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Photothermally Switchable Peptide Nanostructures towards Modulating Catalytic Hydrolase Activity: Ashmeet Singh, Jojo P. Joseph, Deepika Gupta, Chirag Miglani, Nimisha A. Mavlankar, Asish Pal, (2021) Nanoscale, ASAP: . DOI: 10.1039/D1NR03655F
Complexation of an Azo Dye by Cyclodextrins: A Potential Strategy for Water Purification: Anas Saifi,Jojo P. Joseph,Atul P. Singh ,Asish Pal,Kamlesh Kumar, (2021) ACS Omega, 6: 4776-4782. DOI: 10.1021/acsomega.0c05684
Delineating synchronized control of dynamic covalent and non-covalent interactions for polymer chain collapse towards cargo localization and delivery: Jojo P Joseph ,Chirag Miglani,Aashish Bhatt,Debes Ray,Ashmeet Singh,Deepika Gupta,Md Ehesan Ali,Vinod K Aswal,Asish Pal, (2021) Polym. Chem., 12: 1002 -1013. DOI: 10.1039/D0PY01551B
Pathway-Driven Peptide-Bioglass Nanocomposites as the Dynamic and Self-Healable Matrix: Nidhi Gupta,Ashmeet Singh ,Namit Dey ,Sabyasachi Chattopadhyay ,Jojo P. Joseph ,Deepika Gupta ,Munia Ganguli ,Asish Pal, (2021) Chem. Mater., 33: 589-599. DOI: 10.1021/acs.chemmater.0c03757
Enzyme Responsive Chiral Self-sorting in Amyloid-inspired Minimalistic Peptide Amphiphiles: Deepika Gupta, Ranjan Sasmal, Ashmeet Singh, Jojo P. Joseph, Chirag Miglani, Sarit S. Agasti, Asish Pal, (2020) Nanoscale, 12: 18692 - 18700. DOI: 10.1039/D0NR04581K
Photoresponsive Chain Collapse in Flexo-rigid Functional Copolymer to Modulate Self-healing Behavior: Jojo P. Joseph,Chirag Miglani,Ashmeet Singh,Deepika Gupta,Asish Pal, (2020) Soft Matter, 16: 2506-2515. DOI: 10.1039/D0SM00033G
Tandem Interplay of Host-guest Interaction and Photo-responsive Supramolecular Polymerization to 1D and 2D Functional Peptide Materials: Jojo P Joseph, Ashmeet Singh,Deepika Gupta, Chirag Miglani,Asish Pal, (2019) ACS Applied Mater Interface, 11: 28213-28220. DOI: 10.1021/acsami.9b09690
Supramolecular Gels from Sugar-linked Triazole Amphiphiles for Drug Entrapment and Release for Topical Application: Komal Sharma, Jojo P. Joseph, Adarsh Sahu, Narender Yadav, Mohit Tyagi, Ashmeet Singh,Asish Pal,K. P. R. Kartha, (2019) RSC Advances, 9: 19819 - 19827. DOI: 10.1039/C9RA02868D
Pathway Driven Self-assembly and Living Supramolecular Polymerization in Amyloid-inspired Peptide Amphiphile,: Ashmeet Singh, Jojo P. Joseph, Deepika Gupta,Indranil Sarkar,Asish Pal, (2018) Chem Comm, 54: 10730-10733. DOI: 10.1039/C8CC06266H
Chirality control to multi-stimuli responsive and self-healing supramolecular metallo-hydrogels: Bhagwati Sarma,Ashmeet Singh,Tridib K. Sarma,Neha Sardana,Asish Pal, (2018) New J. Chem, 42: 6427-6432. DOI: 10.1039/C8NJ00218E
Mechanism of Building Block Exchange in Stacks of Self-replicating Macrocycles: Elio Mattia,Giulia Leonetti,Sijbren Otto,Asish Pal, (2017) Synlett, 28: 103-107. DOI: 10.1055/s-0036-1589709
Fragment-Based Drug Design Facilitated by Protein-Templated Click Chemistry: Fragment Linking and Optimization of Inhibitors of the Aspartic Protease Endothiapepsin: M. Yagiz Unver,Matthijs Bakker, Stephan P. Berrier, Anna K. H. Hirsch,Asish Pal,Milon Mondal, (2016) Chem. Eur. J., 22: 14826–14830. DOI: 10.1002/chem.201603001
Multi-step control over self-assembled hydrogels of peptide-derived building blocks and a polymeric cross-linker: Van Duc Nguyen, Frank Snijkers, Mathieu Colomb-Delsuc, Giulia Leonetti, Sijbren Otto, Jasper van der Gucht.,Asish Pal, (2016) Soft Matter, 12: 432-440. DOI: 10.1039/C5SM02088C
Controlling the Structure and Length of Self-synthesizing Supramolecular Polymers through Nucleated Growth and Disassembly: Morteza Malakoutikhah, Giulia Leonetti, Meniz Tezcan, Mathieu Colomb-Delsuc, Van Duc Nguyen, Jasper van der Gucht, Sijbren Otto,Asish Pal, (2015) Angew. Chem. Int. Ed., 54: 7852-7856. DOI: 10.1002/anie.201501965
Topochemical Polymerization in Self-assembled Rodlike Micelles of Bisurea Bolaamphiphiles: Panayiotis Voudouris, Marcel. M. E. Koenigs, Pol Besenius, Hans M. Wyss, Volkan Degirmenci, Rint P. Sijbesma.,Asish Pal, (2014) Soft Matter, 10: 952-956. DOI: 10.1039/C3SM52605D
Tuning Crosslink Density in a Physical Hydrogel by Supramolecular Self-sorting.: Marcel Koenigs,Hamed Mortazavi, Gajanan Pawar, Kees Storm, Rint P. Sijbesma,Asish Pal, (2014) Macromolecules, 47: 2712-2717. DOI: 10.1021/ma500446g
SANS Studies of Mixed Micellar Structures made of Dimeric Surfactants having Imidazolium and Ammonium Headgroups: Sougata Dutta, V. K. Aswal,Santanu Bhatttacharya,Asish Pal, (2012) J. Phys. Chem. B, 116: 13239-13247. DOI: 10.1021/jp304700t
Self-Sorting in Rodlike Micelles of Chiral Bisurea Bolaamphiphiles: Pol Besenius, Rint P. Sijbesma.,Asish Pal, (2011) J. Am. Chem. Soc, 133: 12987-12989. DOI: 10.1021/ja205345e
An Insight into Fiber-Solvent Mediated Modulation of Nano-fibrillar Organogels: Suman K. Samanta,Santanu Bhatttacharya,Asish Pal, (2011) Int. J. Nanosci., 10: 547-554. DOI: 10.1142/S0219581X11009374
Carbon nanotube reinforced supramolecular gels with electrically conducting, viscoelastic and near-infrared sensitive properties: Suman K. Samanta,Santanu Bhattacharya, C.N.R. Rao,Asish Pal, (2010) J. Mater. Chem., 20: 6881-6890. DOI: 10.1039/C0JM00491J
Coexisting Hydrophobic Compartments through Self-Sorting in Rod-like Micelles of Bisurea Bolaamphiphiles.: S. Karthikeyan, Rint P. Sijbesma,Asish Pal, (2010) J. Am. Chem. Soc, 132: 7842-7843. DOI: 10.1021/ja101872x
Role of Capping Ligands on the Nanoparticles in the Modulation of Properties of a Hybrid Matrix of Nanoparticles in a 2D Film and in a Supramolecular Organogel.: Asish Pal,Santanu Bhattacharya, (2009) Chem. Eur. J., 15: 9169-9182. DOI: 10.1002/chem.200900304
Structure and properties of two component hydrogels comprising lithocholic acid and organic amines: Hajra Basit, Saikat Sen, Vinod K. Aswal, Santanu Bhattacharya,Asish Pal, (2009) J. Mater. Chem, 19: 4325-4334. DOI: 10.1039/B903407B
Choice of the End Functional Groups in Oligo(p-Pheylenevinylene) Systems Controls the Physical Gelation Efficiency.: Suman K. Samanta,Asish Pal,Santanu Bhattacharya, (2009) Langmuir, 25: 8567-8578. DOI: 10.1021/la8036154
Two Component Hydrogels Comprising Fatty Acids and Amines: Structure, Properties and Application as Template for Metal Nanoparticle Synthesis: Hajra Basit,Asish Pal,Saikat Sen,Santanu Bhattacharya, (2008) Chem. Eur. J., 14: 6534-6545. DOI: 10.1002/chem.200800374
Physical Gelation of Binary Mixtures of Hydrocarbons Mediated by n-Lauroyl-L-Alanine and Characterization of their Thermal and Mechanical Properties: Santanu Bhattacharya,Asish Pal, (2008) J. Phys. Chem. B, 112: 4918-4927. DOI: 10.1021/jp7104715
Synthesis and Properties of Novel Nanocomposites made of Single-Walled Carbon Nanotubes and Low Molecular Mass Organogels and their Thermo-responsive Behavior Triggered by Near IR Radiation: Bhupender S. Chhikara, A. Govindaraj, Santanu Bhattacharya, C.N.R. Rao,Asish Pal, (2008) J. Mater. Chem., 18: 2593-2600. DOI: 10.1039/B719432C
Molecular mechanism of physical gelation of hydrocarbons by fatty acid amides of natural amino acids: Yamuna K. Ghosh,Asish Pal,Santanu Bhattacharya, (2007) Tetrahedron, 63: 7334-7348. DOI: 10.1016/j.tet.2007.05.028
Modulation of Viscoelastic Properties of Physical Gels by Nanoparticle Doping: Influence of the Nanoparticle Capping Agent.: Santanu Bhattacharya, Aasheesh Srivastava,Asish Pal, (2006) Angew. Chem. Int. Ed., 45: 2934-2937. DOI: 10.1002/anie.200504461
Self-healing materials from crystalline polymer composites: Jojo P. Joseph,Ashmeet Singh,Asish Pal, (2017) Springer, Switzerland, 181-218.
Self-synthesizing materials with narrow length distribution through living supramolecular polymerization: Giulia Leonetti, Mathieu Colomb-Delsuc, Jasper van der Gucht, Sijbren Otto,Asish Pal, (2014) .
Tuning the Properties of Photo-induced Hydrogels Obtained from Self-Replicating Peptide Fibers: Jianwei Li, Mathieu Coulomb-Delsuc, Morteza Malakoutikhah, Sijbren Otto,Asish Pal, (2013) .
Towards Out-of-equilibrium Self-assembly:: Jianwei Li, Sijbren Otto, (2012) .
Enantiomeric compartments through self-sorting of rod-like micelles of chiral bisurea bolaamphiphiles: Asish Pal,Rint P. Sijbesma, (2011) .
Dynamic Hydrophobic Compartments through Self-sorting of Rod-like Micelles of Bisurea Bolaamphiphiles: presentation in Dutch Polymer Days, (2010) .
Delineating the Influence of Capping Agents on Metal Nanoparticle-Low Molecular Mass Gel composites: Barbara, USA in Aug, (2007) .
Dept of Organic Chemistry, Indian Institute of Science (IISc), Bangalore, India
Chemical Science Division, Indian Institute of Science (IISc), Bangalore, India
Narendrapur Ramakrishna Mission Residential College, University of Calcutta, India
Malda Zilla School
Malda Zilla School
Professor (Scientist-F):Chemical Biology Unit, Institute of Nano Science & Technology, Sector 81, Mohali, Punjab (January 2021 to Present till date )
Associate Professor (Scientist-E):Chemical Biology Unit, Institute of Nano Science & Technology, Mohali, India (May 2015 to December 2020 )
Postdoctoral Research Fellow with Prof. Sijbren Otto:Stratingh Institute of Chemistry, University of Groningen, The Netherlands (March 2012 to March 2015 )
Postdoctoral Research Fellow with Prof. Rint P. Sijbesma:Molecular Science & Technology, Eindhoven University of Technology, Eindhoven, The Netherlands (March 2009 to March 2012 )
Scientist from ECOST
Eligibility Test (NET) from CSIR-UGC
Integrated PhD fellowship
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