Principles of Aggregation‐Induced Emission: Design of Deactivation Pathways for Advanced AIEgens and Applications

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Abstract: Twenty years ago, the concept of aggregation‐induced emission (AIE) was proposed, and this unique luminescent property has attracted scientific interest ever since. However, AIE denominates only the phenomenon, while the details of its underlying guiding principles remain to be elucidated. This minireview discusses the basic principles of AIE based on our previous mechanistic study of the photophysical behavior of 9,10‐bis (N,N‐dialkylamino) anthracene (BDAA) and the corresponding mechanistic analysis by quantum chemical calculations. BDAA comprises an anthracene core and small electron donors, which allows the quantum chemical aspects of AIE to be discussed. The key factor for AIE is the control over the non‐radiative decay (deactivation) pathway, which can be visualized by considering the conical intersection (CI) on a potential energy surface. Controlling the conical intersection (CI) on the potential energy surface enables the separate formation of fluorescent (CI:high) and non‐fluorescent (CI:low) molecules [control of conical intersection accessibility (CCIA)]. The novelty and originality of AIE in the field of photochemistry lies in the creation of functionality by design and in the active control over deactivation pathways. Moreover, we provide a new design strategy for AIE luminogens (AIEgens) and discuss selected examples.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Principles of Aggregation‐Induced Emission: Design of Deactivation Pathways for Advanced AIEgens and Applications ; volume:59 ; number:25 ; year:2020 ; pages:9856-9867 ; extent:12
Angewandte Chemie / International edition. International edition ; 59, Heft 25 (2020), 9856-9867 (gesamt 12)

Urheber
Suzuki, Satoshi
Sasaki, Shunsuke
Sairi, Amir Sharidan
Iwai, Riki
Tang, Ben Zhong
Konishi, Gen‐ichi

DOI
10.1002/anie.202000940
URN
urn:nbn:de:101:1-2022061905390725727550
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 05:34 UTC

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Beteiligte

  • Suzuki, Satoshi
  • Sasaki, Shunsuke
  • Sairi, Amir Sharidan
  • Iwai, Riki
  • Tang, Ben Zhong
  • Konishi, Gen‐ichi

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