TY - JOUR
T1 - High energy triplet-state manipulation via temperature-responsive twisted hetero-annulation systems
AU - Ye, Guigui
AU - Gao, Yan
AU - Yuan, Wentao
AU - Gu, Juqing
AU - Wang, Jiaqiang
AU - Yang, Yujie
AU - Li, Qianqian
AU - Li, Zhen
N1 - Publisher Copyright:
© The Author(s) 2026.
PY - 2026/12
Y1 - 2026/12
N2 - Precisely controlling excited-state transitions is vital for advanced technologies, particularly for sensitive, long-lived triplet states. Unlike traditional research focused on the lowest-energy excited triplet state (T1), this work focuses on the high-energy triplet state (Tn), which presents significant challenges due to its short-lived and elusive nature. By implementing an annulation strategy to tailor the size, geometry, and electronic properties of the π-conjugated systems, we achieve precise control over two distinct Tn-mediated pathways, Tn → S1 → S0 and Tn → T1 → S0 transitions, using temperature as an external trigger. This approach enables temperature-modulated blue-to-red afterglow, characterized by an exceptionally high energy gap of up to 0.76 eV between the delayed fluorescence and phosphorescence. It offers an elegant solution to resolving the key challenge in Tn manipulation, providing a blueprint for developing next-generation responsive organic semiconductors with tailored excited-state behavior.
AB - Precisely controlling excited-state transitions is vital for advanced technologies, particularly for sensitive, long-lived triplet states. Unlike traditional research focused on the lowest-energy excited triplet state (T1), this work focuses on the high-energy triplet state (Tn), which presents significant challenges due to its short-lived and elusive nature. By implementing an annulation strategy to tailor the size, geometry, and electronic properties of the π-conjugated systems, we achieve precise control over two distinct Tn-mediated pathways, Tn → S1 → S0 and Tn → T1 → S0 transitions, using temperature as an external trigger. This approach enables temperature-modulated blue-to-red afterglow, characterized by an exceptionally high energy gap of up to 0.76 eV between the delayed fluorescence and phosphorescence. It offers an elegant solution to resolving the key challenge in Tn manipulation, providing a blueprint for developing next-generation responsive organic semiconductors with tailored excited-state behavior.
UR - https://www.scopus.com/pages/publications/105045112750
U2 - 10.1038/s41467-026-73715-8
DO - 10.1038/s41467-026-73715-8
M3 - 文章
C2 - 42185322
AN - SCOPUS:105045112750
SN - 2041-1723
VL - 17
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 6790
ER -