AI Article Synopsis
- The study investigates the emission characteristics of a synthesized anthracene-o-carborane dyad, focusing on its behavior in crystalline form where a twisted intramolecular charge transfer (TICT) state influences the emission process.
- The dyad exhibits unique optical properties, including aggregation-induced and crystallization-induced emission enhancement (AIEE and CIEE) along with dual emissions in solution associated with locally excited (LE) and ICT states.
- Mechanistic studies suggest that the TICT emission persists even when the dyad is in a crystalline state, likely due to the compact, spherical shape of o-carborane facilitating rotational movement within the solid structure.
Article Abstract
The emission process of the o-carborane dyad with anthracene originating from the twisted intramolecular charge transfer (TICT) state in the crystalline state is described. The anthracene-o-carborane dyad was synthesized and its optical properties were investigated. Initially, the dyad had aggregation- and crystallization-induced emission enhancement (AIEE and CIEE) properties via the intramolecular charge transfer (ICT) state. Interestingly, the dyad presented the dual-emissions assigned to both locally excited (LE) and ICT states in solution. From the mechanistic studies and computer calculations, it was indicated that the emission band from the ICT should be attributable to the TICT emission. Surprisingly, even in the crystalline state, the TICT emission was observed. It was proposed from that the compact sphere shape of o-carborane would allow for rotation even in the condensed state.
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