Home >

news Help

Publication Information


Title
Japanese: 
English:Supramolecular scaffold-directed two-dimensional assembly of pentacene into a configuration to facilitate singlet fission 
Author
Japanese: 福光 真人, 福井 智也, 庄子 良晃, 梶谷 孝, R. Khan, N. V. Tkachenko, H. Sakai, 羽曾部 卓, 福島 孝典.  
English: M. Fukumitsu, T. Fukui, Y. Shoji, T. Kajitani, R. Khan, N. V. Tkachenko, H. Sakai, T. Hasobe, T. Fukushima.  
Language English 
Journal/Book name
Japanese: 
English:Science Advances 
Volume, Number, Page Volume 10    Issue 37    eadn7763
Published date Sept. 13, 2024 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://www.science.org/doi/10.1126/sciadv.adn7763
 
DOI https://doi.org/10.1126/sciadv.adn7763
Abstract Molecular assemblies featuring two-dimensionality have attracted increasing attention, whereas such structures are difficult to construct simply relying on spontaneous molecular assembly. Here, we present two-dimensional assemblies of acene chromophores achieved using a tripodal triptycene supramolecular scaffold, which have been shown to exhibit a strong ability to assemble molecular and polymer motifs two-dimensionally. We designed pentacene and anthracene derivatives sandwiched by two triptycene units. These compounds assemble into expected two-dimensional structures, with the pentacene chromophores having both sufficient overlap to cause singlet fission and space for conformational change to facilitate the dissociation of a triplet pair into free triplets, which is not the case for the anthracene analog. Detailed spectroscopic analysis revealed that the pentacene chromophore in the assembly undergoes singlet fission with a quantum yield of 88 ± 5%, giving rise to triplet pairs, from which free triplets are efficiently generated (ΦT = 130 ± 8.8%). This demonstrates the utility of the triptycene-based scaffold to design functional π-electronic molecular assemblies.

©2007 Institute of Science Tokyo All rights reserved.