Light emission of organic luminogens: Generation, mechanism and application

In this review, the generation, mechanism and application of light emissions, especially for those in aggregate or solid state, were introduced. With the classification of emissions with different types of excited states, we attempt to draw the whole map of these light emitting processes, thus summa...

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Bibliographic Details
Published in:Progress in materials science 2022-04, Vol.125, p.100914, Article 100914
Main Authors: Fang, Manman, Yang, Jie, Li, Zhen
Format: Article
Language:English
Subjects:
Aggregate
Application
Chemiluminescence
Electroluminescence
Internal mechanism
Light emission
Materials science
Mechanoluminescence
Molecular structure
Organic light emitting diodes
Organic luminogens
Photoluminescence
Quantum mechanics
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Summary:In this review, the generation, mechanism and application of light emissions, especially for those in aggregate or solid state, were introduced. With the classification of emissions with different types of excited states, we attempt to draw the whole map of these light emitting processes, thus summarizing the relationship between the molecular structure/packing and emission property. [Display omitted] Light has been, and continues to be, one of the most fundamental and indispensable elements to life and society. Generally, it can be produced in the process from a higher energy quantum mechanical state of a particle to a lower one through the emission of a photon, and the excitation can be from a variety of sources, including photoluminescence, electroluminescence, mechanoluminescence, chemiluminescence and so on, which are emitted from luminophores with different compositions. The development of luminescent materials has allowed us to gain enormous knowledge that has undoubtedly promoted high-tech innovations, such as organic light-emitting diodes (OLEDs), biological probes, chemical sensing, stimuli responses, security painting, and so on. This review makes a detailed introduction of the generation, mechanism and application of light emissions, especially for those in aggregate or solid state. With the classification of emissions with different types of excited states, we attempt to draw the whole map of these light emitting processes, thus summarizing the relationship between the molecular structure/packing and emission property. Also, their applications are highlighted with the exploration of novel materials and technologies.
ISSN:0079-6425
1873-2208
DOI:10.1016/j.pmatsci.2021.100914