Macrocyclic Parallel Dimer Showing Quantum Coherence of Quintet Multiexcitons at Room Temperature

• DOI: 10.1021/jacs.4c05677
• Publication Date: 2024-09-09T14:22:39Z
• Authors: Wataru Ishii; Masaaki Fuki; Eman M. Bu Ali; Shunsuke Sato; Bhavesh Parmar; Akio Yamauchi; Catherine Helenna...; Masanori Uji; Samara Medina Rivero; Go Watanabe; Jenny Clark; Yasuhiro Kobori; Nobuhiro Yanai
• Keywords: Pentacene; Photoexcitation; Chromophore; Singlet fission

Singlet fission (SF) is a promising approach in quantum information science because it can generate spin-entangled quintet triplet pairs by photoexcitation independent of temperature. However, still challenging to rationally achieve coherence at room temperature, which requires precise control the orientation and dynamics pairs. Here we show that multiexcitons be achieved temperature arranging two pentacene chromophores parallel close proximity within macrocycle. By making dynamic covalent Schiff-base bonds between aldehyde-modified derivatives, macrocyclic dimer-1 (