@article {48058,
	title = {Regioselective synthesis of 1,4,5-trisubstituted 1,2,3-triazole derivatives from alpha,beta-unsaturated carbonyls},
	journal = {European Journal of Organic Chemistry},
	volume = {2022},
	year = {2022},
	month = {JUL},
	pages = {e202200317},
	type = {Article},
	abstract = {<p>
	The copper-catalyzed oxidative azide-olefin cycloaddition (OAOC) reaction of differently substituted alpha,beta-unsaturated carbonyls with azides provided an efficient method for preparing biologically active 1,4,5-trisubstituted 1,2,3-triazoles. In this study, the cycloaddition reaction was found to be a simple and powerful method for constructing diverse mono- and bis-(1,4,5-trisubstituted 1,2,3-triazole) functionalized heterocyclic compounds in moderate to high yields with great regioselectivity. The XRD-analysis data of one of the bis-triazole derivatives supported the regioselectivity as well as the conformity of the method in the construction of the triazole nucleus. The preliminary antifungal profile against C. albicans was observed with cinnamaldehyde-based triazole derivatives demonstrating promising results.</p>
},
	keywords = {alpha, antifungal, beta-Unsaturated carbonyls, Cycloaddition, Dibenzalacetone, Triazole},
	issn = {1434-193X},
	doi = {10.1002/ejoc.202200317},
	author = {Verma, Naimish K. and Bera, Smritilekha and Gonnade, Rajesh and Mondal, Dhananjoy}
}
@article {49568,
	title = {Regioisomeric π-extended nanographene with long-lived phosphorescence afterglow},
	journal = {Angewandte Chemie-International Edition},
	volume = {64},
	year = {2025},
	month = {FEB},
	pages = {e202422125},
	type = {Article},
	abstract = {<p>
	The cutouts of graphene sheets, particularly those with a nonplanar topology, present vast opportunities for advancement. Even a slight deviation from the planar structure can lead to intriguing (chiro)optical features for helically twisted nanographenes. In this context, we introduce two regioisomeric pi-extended nanographenes that exhibit distinct excited-state characteristics. The helicene structure and the photophysical features can be easily tuned by changing the connecting position of the nanographene to the carbazole core (2,7- and 3,6-). Single-crystal X-ray diffraction analysis confirmed the formation of nanographenes with bent and helical conformations. Both derivatives exhibited thermally activated delayed fluorescence at room temperature and phosphorescence at low temperatures. Notably, the nanographene with the bent structure displayed an impressive red afterglow lasting over 30seconds, in contrast to the very weak afterglow observed in the helical structure. DFT calculations revealed the existence of an isoenergetic higher triplet state (T-8) and comparatively weak spin-orbit coupling (T-1-S-0), thereby enabling the bent nanographene to exhibit a long-lived component and strong afterglow. Our findings highlight the significance of regioisomeric nanographenes with exceptional optical properties and offer a deeper understanding of the structure-property relationship in nonplanar nanographenes.</p>
},
	keywords = {Afterglow, CPL, Helicenes, nanographene, Phosphorescence, TADF},
	doi = {10.1002/anie.202422125},
	author = {Kumar, Viksit and Venugopal, Geethu and Jadhav, Ashok Badrinarayan and Dongre, Sangram D. and Gonnade, Rajesh and Kumar, Jatish and Ruer, Paul C. and Hupp, Benjamin and Steffen, Andreas and Babu, Sukumaran Santhosh}
}
