ArticleAngewandte Chemie (International ed. in English)2025
Isotope Engineering of Tetraphenylethylene: Aggregate-Dependent Enhancement of Luminescence Efficiency.
Article in Angewandte Chemie (International ed. in English), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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Who cites it
3 citing papers in PubMed.
- Giant Isotope Effect in Metal-Organic Frameworks Boosts Unprecedented Photo- and Radio-Luminescence Enhancement.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Consistent and Generalizable Effective Model Hamiltonian Framework for Studying Nonadiabatic Dynamics in the Condensed Phase.Journal of chemical theory and computation · 2025Review
- Isotope Engineering of Tetraphenylethylene: Aggregate-Dependent Enhancement of Luminescence Efficiency.Angewandte Chemie (International ed. in English) · 2025Article
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Authors and funding
12 authors.
Funding
Abstract
Aggregation-induced emission (AIE) luminogens, exemplified by tetraphenylethylene (TPE), exhibit enhanced fluorescence in aggregated states and have promising applications in display, photodetectors, fluorescent probes, bioimaging, and biomedicine. This study investigates the influence of varying degrees of deuteration on the photophysical properties of TPE across different aggregation states. Through the synthesis of partially and fully deuterated TPE derivatives (TPE-5d, TPE-10d, and TPE-20d), combined with steady-state fluorescence spectroscopy, time-resolved fluorescence measurements, transient absorption spectroscopy, and density functional theory (DFT) calculations, we elucidate the dual role of deuteration in modulating nonradiative decay pathways. In loosely packed nanoaggregates, increased deuteration enhances photoluminescence quantum yields (PLQY) and extends fluorescence lifetimes by reducing internal conversion rates. Conversely, in tightly packed crystalline states, deuteration leads to decreased PLQY and shortened lifetimes, attributable to the Duschinsky rotation effect (DRE), which enhances inter-mode coupling and internal conversion. Additionally, deuteration significantly prolongs the operational lifetime of blue organic light-emitting diode (OLED) devices, doubling the device lifespan in TPE-20d compared to TPE. This work underscores the necessity of evaluating structure-property relationships at the aggregate level, rather than solely at the molecular level, to fully comprehend and optimize AIE phenomena. These findings highlight the potential of isotope engineering in designing durable and efficient AIE luminogens for applications in optoelectronics and bioimaging.
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