Organic compounds for solid state luminescence enhancement/aggregation induced emission: a theoretical perspective

Area of Science:

• Materials Science
• Physical Chemistry
• Organic Electronics

Background:

• Organic luminophores are crucial for functional materials in modern technologies.
• Solid-state luminescence enhancement (SLE) offers significant potential but is hindered by a lack of mechanistic understanding.
• Aggregation-induced emission (AIE) is a key phenomenon within SLE requiring theoretical explanation.

Purpose of the Study:

• To review theoretical understanding and recent developments in solid-state luminescence enhancement (SLE).
• To focus on aggregation-induced emission (AIE) and its underlying molecular interactions.
• To propose a theoretical framework for mechanistic explanations and quantitative predictions of SLE phenomena.

Main Methods:

• Review of established facts and recent developments in theoretical understanding of SLE and AIE.
• Discussion of quantum chemistry methods suitable for modeling SLE/AIE molecular systems.
• Analysis of literature examples to develop a general theoretical framework and identify design principles.

Main Results:

• Identified fundamental elements governing SLE and AIE in organic luminophores.
• Highlighted the importance of molecular environment and specific structural features in solid-state luminescence.
• Proposed a basis for developing design rules for molecular architectures exhibiting enhanced solid-state luminescence.

Conclusions:

• A deeper theoretical understanding of SLE and AIE is essential for optimizing functional organic materials.
• Quantum chemistry methods and accurate environmental simulations are key to unraveling luminescence enhancement mechanisms.
• Design rules based on molecular structure and solid-state environment can guide the development of high-performance luminophores.