@article {49347,
	title = {Unravelling polymorphism-driven luminescence in GFP chromophore analogues: insights into the phase transition and morphology-dependent optical waveguide properties},
	journal = {Journal of Materials Chemistry C},
	volume = {12},
	year = {2024},
	month = {JUN },
	pages = {8368-8379},
	type = {Article},
	abstract = {<p>
	The advent of multi-emission organic solid-state materials in response to external stimuli has sparked the scientific community due to their potential application in developing sophisticated optoelectronic sensors and bioanalytical tools. This article presents green fluorescent protein chromophore (GFPc) analogue-based polymorphs exhibiting significantly different emissions due to various noncovalent interactions in the supramolecular environment and conformational alterations in the crystalline state. In both compounds (A and B), the polymorphs undergo monotropic thermal phase transitions that are characterized by DSC, HSM, and VT-PXRD techniques. The distinct fluorescent emission characteristics of these polymorphs demonstrated morphology-related optical waveguiding features. Specifically, the plate-type Form A1 emitted light with a 2D blue hue, while the needle-type Form A2 emitted light with a yellowish-green colour. Additionally, the impressive waveguiding capabilities of Form B1 were explored in both straight and singly/doubly bending configurations to facilitate fluorescence propagation. Consequently, there is significant interest in developing organic materials based on GFP chromophores, which exhibit low emission in solution but display multi-fluorescent emission in the solid state. These materials are promising for applications such as optoelectronic devices, security tags, live cell imaging, and fluorescent inks. Polymorphs of GFPc analogs A and B display differences in their optical waveguiding properties in 1D and 2D depending on the crystal shapes. Furthermore, Form B1 demonstrates efficient optical waveguiding capabilities even when the crystal is bent.</p>
},
	issn = {2050-7526},
	doi = {10.1039/d3tc04676a},
	author = {Dabke, Niteen B. and Raut, Yash and Mali, Bhupendra P. and Pandya, Rinu and Vanka, Kumar and Manoj, Kochunnoonny and Gonnade, Rajesh G.}
}
@article {49381,
	title = {Unravelling the prebiotic origins of the simplest α-ketoacids in cometary ices: a computational investigation},
	journal = {CHEMICAL COMMUNICATIONS},
	volume = {60},
	year = {2024},
	month = {OCT },
	pages = {11283-11286},
	type = {Journal Article},
	keywords = {GLYOXYLATE, Hydrocarbons, Metabolism, Precursors},
	issn = {1359-7345},
	doi = {10.1039/d4cc03074e},
	author = {Dash, Soumya Ranjan and Pandya, Rinu and Singh, Geetika and Sharma, Himanshu and Das, Tamal and Haldar, Hritwik and Hotha, Srinivas and Vanka, Kumar}
}
@article {49599,
	title = {Unlocking thermodynamic enolate for kinetically controlled desymmetrizing vinylogous (4+1) carbospiroannulation},
	journal = {Chemistry-A European Journal},
	volume = {31},
	year = {2025},
	month = {MAY},
	type = {Article},
	abstract = {<p>
	An unprecedented thermodynamically unfavorable (4+1) deysmmetrizing spiroannulation through a thermodynamic enolate intermediate, enabling a single-step synthesis of ubiquitous scaffolds such as all-carbon chiral spirocycles, is disclosed. In this spiroannulation, we present a vinylogous organocatalytic enantioselective desymmetrizing (4+1) cycloaddition approach involving alkylidene malononitrile and cyclopent-1,3-dienone. This carbospiroannulation method produces functionally enriched spiro[4,4]nonane structures with three stereocenters, has presented good-to-high yields and enantiomeric ratios. Detailed DFT calculations reveal an intriguing reaction mechanism, which validates our observations.</p>
},
	keywords = {3-diones, alkylidene malononitrile, cyclopent-1, quaternary stereocenters, spiro compounds, thermodynamic enolate},
	issn = {0947-6539},
	doi = {10.1002/chem.202500671},
	author = {Singh, Sanjay and Singh, Abhijeet and Pandya, Rinu and Vanka, Kumar and Singh, Ravi P.}
}
