01511nas a2200193   4500008004100000022001400041245011000055210007000165260000900235300001600244490000700260520080300267100001801070700002401088700002201112700002201134700003001156856013101186       2024                        eng d  a1359-734500aTailoring helical ends of π-extended [6]heterohelicenes to control optical, and electrochemical features0 aTailoring helical ends of πextended 6heterohelicenes to control   cOCT   a11944-119470 v603 a<p>
	The inherent helical chirality and improved pi-stacking capabilities endow helicenes with fascinating photophysical characteristics when decorated with lateral pi-extensions. Here, we report the synthesis and physicochemical characterization of expanded hetero[6]helicenes fused with thiadiazole and selenadiazole rings at the helical ends. Comparing these heterohelicenes revealed the impact of the heteroatom-embedded aromatic rings on the excited state and redox features. A small structural variation of the terminal rings from thiadiazole to selenadiazole caused a striking change in the heterohelical nanographenes. The inherent helical chirality and improved pi-stacking capabilities endow helicenes with fascinating photophysical characteristics when decorated with heteroatoms.</p>
1 aKumar, Viksit1 aDongre, Sangram, D.1 aVenugopal, Geethu1 aNarayanan, Aswini1 aBabu, Sukumaran, Santhosh  uhttps://library.ncl.res.in/content/tailoring-helical-ends-%CF%80-extended-6heterohelicenes-control-optical-and-electrochemical