Details

Autor(en) / Beteiligte

• Jin, Jia‐Ming
• Chen, Wen‐Cheng
• Tan, Ji‐Hua
• Li, Yang
• Mu, Yingxiao
• Zhu, Ze‐Lin
• Cao, Chen
• Ji, Shaomin
• Hu, Dehua
• Huo, Yanping
• Zhang, Hao‐Li
• Lee, Chun‐Sing

Titel

Photo‐controllable Luminescence from Radicals Leading to Ratiometric Emission Switching via Dynamic Intermolecular Coupling

Ist Teil von

• Angewandte Chemie International Edition, 2023-02, Vol.62 (6), p.e202214281-n/a

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The development of photoinduced luminescent radicals with dynamic emission color is still challenging. Herein we report a novel molecular radical system (TBIQ) that shows photo‐controllable luminescence, leading to a wide range of ratiometric color changes via light excitation. The conjugated skeleton of TBIQ is decorated with steric‐demanding tertiary butyl groups that enable appropriate intermolecular interaction to make dynamic intermolecular coupling possible for controllable behaviors. We reveal that the helicenic pseudo‐planar conformation of TBIQ experiences a planarization process after light excitation, leading to more compactly stacked supermolecules and thus generating radicals via intermolecular charge transfer. The photo‐controllable luminescent radical system is employed for a high‐level information encryption application. This study may offer unique insight into molecular dynamic motion for optical manufacturing and broaden the scope of smart‐responsive materials for advanced applications. Photo‐controllable luminescence from a new molecular radical system featuring photoinduced structural change and dynamic intermolecular coupling was achieved. Unprecedented ratiometric emission with a wide range of color changes was demonstrated. Luminescence‐encrypted anti‐counterfeiting patterns with a “burn after reading” mode are demonstrated by employing the dynamic luminescent radical material.