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Updated: May 12, 2026
10:35
Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
Published on: May 29, 2018
Recent developments in In(III) coordination complexes: singularity in structure-photophysics relationships
Minseo Ji1, Haein Kim2, Gahyeon Baek1
1Department of Chemistry, Chungbuk National University, Cheongju, 28644, Korea.
Dalton Transactions (Cambridge, England : 2003)
|May 11, 2026
Summary
Indium complexes are versatile luminophores where ligand structure dictates light emission. This review correlates ligand design with photophysical properties, guiding the development of new optoelectronic materials.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Photophysics
Background:
- Indium coordination complexes are emerging as key main-group luminophores.
- Excited-state behavior is primarily controlled by ligand architecture, not metal-centered transitions.
Purpose of the Study:
- To review structure-photophysics relationships in indium complexes across diverse ligand families.
- To establish correlations between ligand design and photophysical properties for optoelectronic applications.
Main Methods:
- Analysis of structure-photophysics relationships in four ligand families: quinolinolate, salen/salophen, dipyrrin, and macrocycles.
- Correlation of quantitative photophysical data (quantum yield, lifetime, rate constants, ISC efficiency) with structural parameters.
- Comparison with aluminum and gallium congeners.
Main Results:
- Ligand donor-acceptor balance, rigidity, and π-conjugation influence charge transfer and delocalized states.
- Indium complexes exhibit stronger ICT character and broader emission tunability compared to Al/Ga congeners.
- Macrocyclic indium complexes show efficient triplet formation and singlet-oxygen generation.
Conclusions:
- Common design motifs link localized CT emission to delocalized π-systems in indium complexes.
- A framework for rational ligand modification in In(III) complexes is presented.
- This research facilitates the refinement of indium-based emitters and photosensitizers for optoelectronics.
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