@misc{10481/76893,
year = {2022},
month = {7},
url = {https://hdl.handle.net/10481/76893},
abstract = {Herein we describe a novel superhelicene structure consisting of three hexa-peri-hexabenzocoronene
(HBC) units arranged in a helical geometry and creating two carbo[5]helicenes and a carbo[7]helicene.
The central HBC bears a tropone moiety, which induces a saddle-helix hybrid geometry into the 3D
structure of the prepared nanographene. The introduction of multiple helicenes and the position of the
tropone unit trigger near-infrared circularly polarized luminescence (NIR-CPL, up to 850 nm, jglumj ¼ 3.0
  10 3) combined with good photoluminescence quantum yields (fF ¼ 0.43) and upconverted emission
based on two-photon absorption (TPA). Compared to previously reported superhelicenes of similar size,
higher quantum yields, CPL brightness, and red-shifted absorption and emission spectra are achieved.
Besides, chiroptical properties of enantiopure thin films were evaluated. These findings place this novel
superhelicene as the first NIR-CPL superhelicene ever reported and make it a promising candidate for
use as a chiral luminescent material in optoelectronic devices.},
organization = {European Research Council (ERC)	677023},
organization = {MCIN/AEI FEDER "Una manera de hacer Europa"	PGC2018-101181-B-I00},
organization = {Spanish Government	BES-2016-076371},
organization = {Fundacao para a Ciencia e a Tecnologiags	UIDB/00100/2020	
LA/P/0056/2020	
PTDC/NAN-MAT/29317/2017	
2020.01763.CEECIND},
publisher = {Royal Society of Chemistry},
title = {Highly contorted superhelicene hits near-infrared circularly polarized luminescence},
doi = {10.1039/d2sc03452b},
author = {Míguez Lago, Sandra and Moreno Cruz, Carlos and González Campaña, Araceli},
}