Luminescent Co-Assemblies of Donor-Acceptor Dimeric Cyanostilbenes with (Bio)Anionic Polymeric Templates Supratim Banerjee, Susmit Som, Sharanabasava D. Hiremath, Richeek Sarkar Chemistry an Asian Journal, 2025 Amphiphilic dimeric cyanostilbenes with two donor‐acceptor moieties connected through variable aliphatic linkers displayed aggregation in aqueous media to produce red emissive nano‐assemblies. In the presence of anionic biopolymers such as ctDNA and heparin, they formed electrostatically driven co‐assemblies with enhanced luminescence. Moreover, due to the chiral nature of the bio‐templates DNA and heparin, the co‐assemblies demonstrated induced chirality features. Although the central double bond in cyanostilbenes is known to undergo various photochemical conversions, these dimeric donor‐acceptor cyanostilbenes, in their self‐assembled state, essentially remained photoinactive under UV irradiation. However, in the bio‐templated co‐assemblies, they showed comparatively higher photo‐reactivity, which was especially prominent for the ctDNA based co‐assemblies. We also found that these co‐assemblies can be used as artificial light‐harvesting systems by incorporating acceptor dyes and this led to the generation of amplified emission from the acceptor dyes in the NIR range of the spectrum. Furthermore, the co‐assemblies demonstrated selective fluorescence quenching in the presence of metal ions such as Cu2+ and Fe2+, highlighting their potential for metal‐ion sensing applications.
Metal Ion Responsive Luminescent Bio-Templated Co-Assemblies: Label-Free Detection of Multi-Metal Ions in Aqueous Media Sharanabasava D. Hiremath, Nitish Kumar, Supratim Banerjee Chemistry an Asian Journal, 2024 Recently, 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.
A New Series of D1-A-D2-type ESIPT-TICT-AIE Active Orange-to-red Emissive Unsymmetrical Azines: Their All-throughout Mechanochemical Synthesis and Exploration of Photophysical Properties Akhil A. Bhosle, Mainak Banerjee, Sharanabasava D. Hiremath, Achikanath C. Bhasikuttan, Amrita Chatterjee Chemistry an Asian Journal, 2023 Azines 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.
Protect : Steerable Retrosynthesis through Neuro-Symbolic State Encoding SV Sathyanarayana, SR Kirankumar, SD Hiremath, B Ramsundar arXiv preprint arXiv:2602.13419 , 2026 2026
DeepRetro discovers retrosynthetic pathways through iterative large language model reasoning SV Sathyanarayana, SD Hiremath, S Rahil Kirankumar, R Panda, R Jana, ... Scientific Reports , 2026 2026 Citations: 1
Protect : Steerable Retrosynthesis through Neuro-Symbolic State Encoding S Vinaya Sathyanarayana, S Rahil Kirankumar, SD Hiremath, ... arXiv e-prints, arXiv: 2602.13419 , 2026 2026
Deepretro: Retrosynthetic pathway discovery using iterative llm reasoning SV Sathyanarayana, SD Hiremath, R Shah, R Panda, R Jana, R Singh, ... arXiv preprint arXiv:2507.07060 , 2025 2025 Citations: 5
DeepRetro: Retrosynthetic Pathway Discovery using Iterative LLM Reasoning S Vinaya Sathyanarayana, R Shah, SD Hiremath, R Panda, R Jana, ... arXiv e-prints, arXiv: 2507.07060 , 2025 2025
Luminescent Co‐Assemblies of Donor‐Acceptor Dimeric Cyanostilbenes with (Bio) Anionic Polymeric Templates S Banerjee, S Som, SD Hiremath, R Sarkar Chemistry–An Asian Journal 20 (5), e202401163 , 2025 2025 Citations: 3
A Carbon Dots-Cobalt Oxyhydroxide-Based Dual Optical Nanosensor for ppb-Level Detection of Sulfide Ions and H 2 S in Aqueous Media and Alginate Beads AA Pinheiro, A Thakuri, SD Hiremath, B Sharmah, P Manna, M Banerjee, ... ACS Applied Nano Materials 7 (16), 19184-19193 , 2024 2024 Citations: 2
Metal Ion Responsive Luminescent Bio‐Templated Co‐Assemblies: Label‐Free Detection of Multi‐Metal Ions in Aqueous Media SD Hiremath, N Kumar, S Banerjee Chemistry–An Asian Journal 19 (13), e202400291 , 2024 2024 Citations: 2
A carbon dots-MnO2 nanosheet-based turn-on pseudochemodosimeter as low-cost probe for selective detection of hazardous mercury ion contaminations in water A Thakuri, AA Bhosle, SD Hiremath, M Banerjee, A Chatterjee Journal of Hazardous Materials 469, 133998 , 2024 2024 Citations: 27
Cationic Donor–Two-Acceptor Dye–Graphene Quantum Dot Nanoconjugate for the Ratiometric Detection of Bisulfite Ions and Monitoring of SO 2 Levels in Heat … SD Hiremath, A Thakuri, MM Joseph, AA Bhosle, KK Maiti, M Banerjee, ... ACS Applied Nano Materials 6 (11), 9958-9967 , 2023 2023 Citations: 9
A New Series of D 1 ‐A‐D 2 ‐type ESIPT‐TICT‐AIE Active Orange‐to‐red Emissive Unsymmetrical Azines: Their All‐throughout Mechanochemical Synthesis and … AA Bhosle, M Banerjee, SD Hiremath, AC Bhasikuttan, A Chatterjee Chemistry–An Asian Journal 18 (10), e202300048 , 2023 2023 Citations: 23
Carbon nanomaterial-based sensing assemblies for fluorimetric detection of toxic analytes in aqueous media SD Hiremath, A Chatterjee Proceedings of the fifteenth national symposium on radiation and … , 2023 2023
Review of 2D MnO 2 Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications SD Hiremath, M Banerjee, A Chatterjee ACS Applied Nano Materials 5 (12), 17373-17412 , 2022 2022 Citations: 28
GQDS as a fret-quencher of a red emissive dye: it forms a supramolecular sensing assembly with CB (7) for the detection of spermine and spermidine at PPB level AA Bhosle, SD Hiremath, A Chatterjee, M Banerjee, AC Bhasikuttan Proceedings of the sixteenth DAE-BRNS biennial Trombay symposium on … , 2022 2022
A combination of a graphene quantum dots–cationic red dye donor–acceptor pair and cucurbit [7] uril as a supramolecular sensor for ultrasensitive detection of cancer biomarkers … AA Bhosle, M Banerjee, SD Hiremath, DS Sisodiya, VG Naik, N Barooah, ... Journal of Materials Chemistry B 10 (40), 8258-8273 , 2022 2022 Citations: 26
A coumarin coupled tetraphenylethylene based multi-targeted AIEgen for cyanide ion and nitro explosive detection, and cellular imaging VG Naik, SD Hiremath, A Thakuri, V Hemmadi, M Biswas, M Banerjee, ... Analyst 147 (13), 2997-3006 , 2022 2022 Citations: 16
A redox-coupled carbon dots-MnO2 nanosheets based sensory platform for label-free and sensitive detection of E. coli SD Hiremath, AA Bhosle, A Nayse, S Biswas, M Biswas, AC Bhasikuttan, ... Sensors and Actuators B: Chemical 339, 129918 , 2021 2021 Citations: 35
Solvent-free mechanochemical synthesis of a novel benzothiazole-azine based ESIPT-coupled orange AIEgen for the selective recognition of Cu2+ ions in solution and solid phase AA Bhosle, SD Hiremath, AC Bhasikuttan, M Banerjee, A Chatterjee Journal of Photochemistry and Photobiology A: Chemistry 413, 113265 , 2021 2021 Citations: 51
Phthalimide conjugation turns the AIE-active tetraphenylethylene unit non-emissive: its use in turn-on sensing of hydrazine in solution and the solid-and vapour-phase SD Hiremath, RU Gawas, D Das, VG Naik, AA Bhosle, VP Murali, KK Maiti, ... RSC advances 11 (35), 21269-21278 , 2021 2021 Citations: 24
Reduced graphene oxide–thioguanine composites for the selective detection of inorganic and organic mercury in aqueous media SD Hiremath, KK Maiti, NN Ghosh, M Banerjee, A Chatterjee ACS Applied Nano Materials 3 (3), 3071-3079 , 2020 2020 Citations: 19
MOST CITED SCHOLAR PUBLICATIONS
Solvent-free mechanochemical synthesis of a novel benzothiazole-azine based ESIPT-coupled orange AIEgen for the selective recognition of Cu2+ ions in solution and solid phase AA Bhosle, SD Hiremath, AC Bhasikuttan, M Banerjee, A Chatterjee Journal of Photochemistry and Photobiology A: Chemistry 413, 113265 , 2021 2021 Citations: 51
A water-soluble AIE-gen for organic-solvent-free detection and wash-free imaging of Al 3+ ions and subsequent sensing of F− ions and DNA tracking SD Hiremath, RU Gawas, SC Mascarenhas, A Ganguly, M Banerjee, ... New Journal of Chemistry 43 (13), 5219-5227 , 2019 2019 Citations: 39
A redox-coupled carbon dots-MnO2 nanosheets based sensory platform for label-free and sensitive detection of E. coli SD Hiremath, AA Bhosle, A Nayse, S Biswas, M Biswas, AC Bhasikuttan, ... Sensors and Actuators B: Chemical 339, 129918 , 2021 2021 Citations: 35
Sulfonate-functionalized tetraphenylethylenes for selective detection and wash-free imaging of Gram-positive bacteria (Staphylococcus aureus) VG Naik, SD Hiremath, A Das, D Banwari, RU Gawas, M Biswas, ... Materials Chemistry Frontiers 2 (11), 2091-2097 , 2018 2018 Citations: 33
Carbon dots-MnO2 based turn-on fluorescent probe for rapid and sensitive detection of hydrazine in water SD Hiremath, B Priyadarshi, M Banerjee, A Chatterjee Journal of Photochemistry and Photobiology A: Chemistry 389, 112258 , 2020 2020 Citations: 30
Review of 2D MnO 2 Nanosheets as FRET-Based Nanodot Fluorescence Quenchers in Chemosensing Applications SD Hiremath, M Banerjee, A Chatterjee ACS Applied Nano Materials 5 (12), 17373-17412 , 2022 2022 Citations: 28
A carbon dots-MnO2 nanosheet-based turn-on pseudochemodosimeter as low-cost probe for selective detection of hazardous mercury ion contaminations in water A Thakuri, AA Bhosle, SD Hiremath, M Banerjee, A Chatterjee Journal of Hazardous Materials 469, 133998 , 2024 2024 Citations: 27
A combination of a graphene quantum dots–cationic red dye donor–acceptor pair and cucurbit [7] uril as a supramolecular sensor for ultrasensitive detection of cancer biomarkers … AA Bhosle, M Banerjee, SD Hiremath, DS Sisodiya, VG Naik, N Barooah, ... Journal of Materials Chemistry B 10 (40), 8258-8273 , 2022 2022 Citations: 26
Phthalimide conjugation turns the AIE-active tetraphenylethylene unit non-emissive: its use in turn-on sensing of hydrazine in solution and the solid-and vapour-phase SD Hiremath, RU Gawas, D Das, VG Naik, AA Bhosle, VP Murali, KK Maiti, ... RSC advances 11 (35), 21269-21278 , 2021 2021 Citations: 24
A New Series of D 1 ‐A‐D 2 ‐type ESIPT‐TICT‐AIE Active Orange‐to‐red Emissive Unsymmetrical Azines: Their All‐throughout Mechanochemical Synthesis and … AA Bhosle, M Banerjee, SD Hiremath, AC Bhasikuttan, A Chatterjee Chemistry–An Asian Journal 18 (10), e202300048 , 2023 2023 Citations: 23
Reduced graphene oxide–thioguanine composites for the selective detection of inorganic and organic mercury in aqueous media SD Hiremath, KK Maiti, NN Ghosh, M Banerjee, A Chatterjee ACS Applied Nano Materials 3 (3), 3071-3079 , 2020 2020 Citations: 19
A coumarin coupled tetraphenylethylene based multi-targeted AIEgen for cyanide ion and nitro explosive detection, and cellular imaging VG Naik, SD Hiremath, A Thakuri, V Hemmadi, M Biswas, M Banerjee, ... Analyst 147 (13), 2997-3006 , 2022 2022 Citations: 16
Cationic Donor–Two-Acceptor Dye–Graphene Quantum Dot Nanoconjugate for the Ratiometric Detection of Bisulfite Ions and Monitoring of SO 2 Levels in Heat … SD Hiremath, A Thakuri, MM Joseph, AA Bhosle, KK Maiti, M Banerjee, ... ACS Applied Nano Materials 6 (11), 9958-9967 , 2023 2023 Citations: 9
Deepretro: Retrosynthetic pathway discovery using iterative llm reasoning SV Sathyanarayana, SD Hiremath, R Shah, R Panda, R Jana, R Singh, ... arXiv preprint arXiv:2507.07060 , 2025 2025 Citations: 5
Luminescent Co‐Assemblies of Donor‐Acceptor Dimeric Cyanostilbenes with (Bio) Anionic Polymeric Templates S Banerjee, S Som, SD Hiremath, R Sarkar Chemistry–An Asian Journal 20 (5), e202401163 , 2025 2025 Citations: 3
A Carbon Dots-Cobalt Oxyhydroxide-Based Dual Optical Nanosensor for ppb-Level Detection of Sulfide Ions and H 2 S in Aqueous Media and Alginate Beads AA Pinheiro, A Thakuri, SD Hiremath, B Sharmah, P Manna, M Banerjee, ... ACS Applied Nano Materials 7 (16), 19184-19193 , 2024 2024 Citations: 2
Metal Ion Responsive Luminescent Bio‐Templated Co‐Assemblies: Label‐Free Detection of Multi‐Metal Ions in Aqueous Media SD Hiremath, N Kumar, S Banerjee Chemistry–An Asian Journal 19 (13), e202400291 , 2024 2024 Citations: 2
DeepRetro discovers retrosynthetic pathways through iterative large language model reasoning SV Sathyanarayana, SD Hiremath, S Rahil Kirankumar, R Panda, R Jana, ... Scientific Reports , 2026 2026 Citations: 1
Protect : Steerable Retrosynthesis through Neuro-Symbolic State Encoding SV Sathyanarayana, SR Kirankumar, SD Hiremath, B Ramsundar arXiv preprint arXiv:2602.13419 , 2026 2026
Protect : Steerable Retrosynthesis through Neuro-Symbolic State Encoding S Vinaya Sathyanarayana, S Rahil Kirankumar, SD Hiremath, ... arXiv e-prints, arXiv: 2602.13419 , 2026 2026
