Common ground and divergence: OLED emitters as photocatalysts.

Area of Science:

• Materials Science
• Photochemistry
• Organic Electronics

Background:

• Many photocatalysts were initially developed or utilized as emitters in organic light-emitting diodes (OLEDs).
• This connection highlights shared photophysical principles between light emission and light-driven catalysis.

Purpose of the Study:

• To summarize the evolution of OLED emitters and their relevance to photocatalysis.
• To explore how OLED research has benefited the field of photocatalysis.
• To identify commonalities and divergences in properties between OLED emitters and photocatalysts for future material discovery.

Main Methods:

• Review and synthesis of literature on OLED emitter generations and their photophysical processes.
• Comparative analysis of design considerations for OLED emitters and photocatalysts.
• Focused discussion on thermally activated delayed fluorescence (TADF) emitters due to their significant impact.

Main Results:

• OLED research has provided insights into designing efficient light-harvesting and charge-transfer materials.
• Optimization for OLEDs sometimes benefits photocatalysis, while other properties require opposing design strategies.
• Thermally activated delayed fluorescence (TADF) emitters represent a significant recent advancement in both fields.

Conclusions:

• A deeper understanding of the interplay between OLED emitter design and photocatalyst requirements is crucial.
• Future discovery of novel photocatalysts can be accelerated by considering the shared and divergent properties with OLED emitters.
• The principles governing OLED emitters offer a valuable framework for advancing photocatalytic applications.