|
Authors
|
Yang, L.; Yin, Y.; Niu, W.; Fu, Y.; Liu, F.; Komber, H.; Popov, A. A.; Ma, J.; Feng, X.
|
|
Title
|
Asymmetric triple helical nonbenzenoid nanographenes with controllable helicene lengths
|
|
Date
|
05.09.2025
|
|
Number
|
0
|
|
Abstract
|
Helical nanographenes (NGs) play a crucial role in the development of chiral nanomaterials due to their distinctive optoelectronic and chiroptical properties. Herein, we report the efficient synthesis of two unprecedented azulene-embedded asymmetric triple helical NGs (1 and 2) with controllable helicene subunit lengths and π-extension. The crystallographic analysis confirms their highly twisted and asymmetric geometries. Both compounds exhibit narrow and tunable optical energy gaps (1: 1.74 eV; 2: 1.63 eV), as determined by UV–vis absorption and cyclic voltammetry measurements. Moreover, the enantiomers of 1 display pronounced chiroptical activity with a gabs of up to 3.1 × 10–3.
|
|
Publisher
|
American Chemical Society
|
|
Wikidata
|
|
|
Citation
|
Organic Letters 27 (2025) 10507-10512
|
|
DOI
|
https://doi.org/10.1021/acs.orglett.5c03372
|
|
Tags
|
|
