Sharanabasava D Hiremath
@bits-pilani.ac.in
Chemistry
Birla Institute of Technology and Sciences
RESEARCH, TEACHING, or OTHER INTERESTS
Analytical Chemistry, Spectroscopy, Organic Chemistry, General Chemistry
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Sharanabasava D. Hiremath, Nitish Kumar, and Supratim Banerjee
Wiley
AbstractRecently, anionic bio‐templates have emerged as promising platforms for designing dynamic and stimuli‐responsive chromophoric assemblies capable of light harvesting in aqueous media thereby mimicking natural photosynthesis. Here, we present multi‐metal ion‐responsive luminescent co‐assemblies between cationic pyrene‐imidazolium amphiphile and anionic bio‐templates (ATP, heparin, and DNA) in aqueous media. The anionic bio‐templates enhance Förster resonance energy transfer (FRET) in the co‐assemblies, with pyrene serving as an excellent donor for generating tunable multi‐luminescent materials with embedded acceptor dyes. However, a significant loss in energy transfer towards acceptor dyes was observed in the presence of various metal ions, attributed to excimeric emission quenching facilitated by electron transfer between the pyrene chromophore and metal ions. Interestingly, detailed studies revealed that only ATP‐based co‐assemblies exhibited quenching phenomena in the presence of metal ions, contrasting with heparin and ctDNA co‐assemblies. Additionally, label‐free detection of multi‐metal ions in aqueous environments, such as Fe2+, Fe3+, and Cu2+ ions, was successfully achieved with lower detection limits of 0.01 μM (3 ppb), 0.12 μM (30 ppb), and 0.58 μM (150 ppb) respectively. These co‐assemblies hold significant promise for practical applications in environmental and biomedical sensing, enabling sensitive monitoring of metal ion concentrations.
Ankit Thakuri, Akhil A. Bhosle, Sharanabasava D. Hiremath, Mainak Banerjee, and Amrita Chatterjee
Elsevier BV
Amanda Ana Pinheiro, Ankit Thakuri, Sharanabasava D. Hiremath, Bhaben Sharmah, Prasenjit Manna, Mainak Banerjee, and Amrita Chatterjee
American Chemical Society (ACS)
Sharanabasava D. Hiremath, Ankit Thakuri, Manu M. Joseph, Akhil A. Bhosle, Kaustabh Kumar Maiti, Mainak Banerjee, and Amrita Chatterjee
American Chemical Society (ACS)
Akhil A. Bhosle, Mainak Banerjee, Sharanabasava D. Hiremath, Achikanath C. Bhasikuttan, and Amrita Chatterjee
Wiley
AbstractAzines are interesting compounds exhibiting aggregation‐induced‐emission (AIE) and twisted‐intramolecular‐charge‐transfer (TICT) properties that have exciting prospects in chemosensing and bioimaging applications. They commonly have symmetrical structures and there is no report on red‐emissive unsymmetrical azines. Herein, we report a novel class of orange‐to‐red emissive hydroxybenzothiazole(HBT)‐based unsymmetrical azines (BTDPA) with triple photophysical characteristics of ESIPT‐TICT‐AIE. The dyes were synthesized by an all‐throughout mechanochemical route in a sustainable way. They displayed D1‐A‐D2 character and fluoresce strongly both in organic solvents due to ESIPT and in the solid state by AIE via TICT. The incorporation of different electron‐withdrawing groups (EWGs) and electron‐donating groups (EDGs) at either HBT or diphenyl‐methylene moiety resulted in tunable fluorescence properties. The red‐emissive character was achieved by keeping EDG both at HBT (−OMe) and the diphenyl‐methylene moiety (−NMe2) (λem 680 nm). The dyes exhibited good quantum yields, large Stoke shifts (upto 293 nm) and were utilized in nitroaromatics and Cu2+ sensing.
Sharanabasava D. Hiremath, Mainak Banerjee, and Amrita Chatterjee
American Chemical Society (ACS)
Akhil A. Bhosle, Mainak Banerjee, Sharanabasava D. Hiremath, Dilawar S. Sisodiya, Viraj G. Naik, Nilotpal Barooah, Achikanath C. Bhasikuttan, Anjan Chattopadhyay, and Amrita Chatterjee
Royal Society of Chemistry (RSC)
The use of a GQDs-based donor–acceptor pair in affinity-driven supramolecular sensing was first time introduced by the strategic introduction of a cavitand, CB[7] for selective and sensitive detection of spermine and spermidine under physiological conditions via a ratiometric response.
Viraj G. Naik, Sharanabasava D. Hiremath, Ankit Thakuri, Vijay Hemmadi, Malabika Biswas, Mainak Banerjee, and Amrita Chatterjee
Royal Society of Chemistry (RSC)
A coumarin coupled tetraphenylethylene based AIEgen (TPE-Lac) with an intense greenish-yellow emission has been synthesized and utilized for multipurpose sensing and imaging applications.
Sharanabasava D. Hiremath, Akhil A. Bhosle, Anushka Nayse, Sumit Biswas, Malabika Biswas, Achikanath C. Bhasikuttan, Mainak Banerjee, and Amrita Chatterjee
Elsevier BV
Sharanabasava D. Hiremath, Ram U. Gawas, Dharmendra Das, Viraj G. Naik, Akhil A. Bhosle, Vishnu Priya Murali, Kaustabh Kumar Maiti, Raghunath Acharya, Mainak Banerjee, and Amrita Chatterjee
Royal Society of Chemistry (RSC)
A new AIE-based fluorimetric probe (TPE-PMI) has been successfully developed utilizing Gabriel reaction for the selective detection of hydrazine in solid, liquid and vapour phases.
Akhil A. Bhosle, Sharanabasava D. Hiremath, Achikanath C. Bhasikuttan, Mainak Banerjee, and Amrita Chatterjee
Elsevier BV
Sharanabasava D. Hiremath, Kaustabh Kumar Maiti, Narendra Nath Ghosh, Mainak Banerjee, and Amrita Chatterjee
American Chemical Society (ACS)
Graphene oxide (GO) and its reduced form reduced GO (rGO) have received huge research attention because of their unique surface properties and diverse application potential. Here, a rGO-based turn-...
Sharanabasava D. Hiremath, Bhaskar Priyadarshi, Mainak Banerjee, and Amrita Chatterjee
Elsevier BV
Sharanabasava D. Hiremath, Ram U. Gawas, Starlaine C. Mascarenhas, Anasuya Ganguly, Mainak Banerjee, and Amrita Chatterjee
Royal Society of Chemistry (RSC)
A water-soluble TPE-based AIEgen (TPE-diBuS) was developed for organic-solvent-free detection of Al3+ ions and its wash-free cell imaging. The TPE-diBuS-Al ensemble was used for the detection of F− ions and DNA tracking.
Viraj G. Naik, Sharanabasava D. Hiremath, Avijit Das, Dishant Banwari, Ram U. Gawas, Malabika Biswas, Mainak Banerjee, and Amrita Chatterjee
Royal Society of Chemistry (RSC)
Two sulfonate functionalized tetraphenylethylene (TPE) derivatives were synthesized and used as probes for the detection and imaging of Gram-positive bacteria (e.g. Staphylococcus aureus).