A Strategy of Self-Isolated Enhanced Emission to Achieve Highly Emissive Dual-State Emission for Organic Luminescent Materials

Currently, the commonly developed organic luminescent materials (OLMs) usually exhibit poor luminescent performance in aggregated solid states compared with their well-dissolved solution states, making it a tough goal to achieve the highly emissive dual-state emission. To overcome this limitation, a self-isolated enhanced emission (SIEE) strategy through flexible alkyl chains to suppress the emission-quenched - stacking in solids is proposed here and, based on this guideline, remarkable emission efficiency with photoluminescence quantum yields up to 99.72% in solution and 77.46% in the solid state are achieved for the SIEE constructed DBBT-C8, which is then successfully used in solid-state displays and data encryption.