Aggregation-induced structural clamping drives NIR photoluminescence switching in Au 2 Cu 6 nanoclusters by suppressing El-Sayed-allowed intersystem crossing

Key Points

• This research investigates how structural changes in Au2Cu6 nanoclusters affect their photoluminescence properties.
• Investigated aggregation effects on Au2Cu6 nanoclusters
• Analyzed photoluminescence behavior
• Studied geometric relaxation and intersystem crossing pathways
• Observed drastic switch from near-infrared phosphorescence to fluorescence
• Structural clamping significantly suppressed intersystem crossing