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![[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
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[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
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Thermally Activated Delayed Fluorescent Binuclear Copper(I) Alkynyl Complexes with Cuprophilic Interactions
Xi Zhang1,2, Jia-Xi Song1,2, Xiaoyong Chang3
1Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|February 28, 2024
Summary
New copper(I) complexes exhibit thermally activated delayed fluorescence (TADF) with high efficiency and reversible bicolor luminescence switching. These findings offer a novel strategy for developing stimuli-responsive metal-based TADF materials for advanced applications.
Area of Science:
- Materials Science
- Photochemistry
- Inorganic Chemistry
Background:
- Copper(I)-based emitters are attractive for displays and lighting due to their tunable structures and photoluminescence.
- Thermally activated delayed fluorescence (TADF) materials offer high efficiency in light emission.
Purpose of the Study:
- To design and synthesize novel binuclear copper(I) complexes with enhanced TADF properties.
- To investigate the stimuli-responsive luminescence behavior of these complexes.
Main Methods:
- Synthesis of binuclear copper(I) complexes.
- Photoluminescence spectroscopy to determine quantum yields and emission properties.
- Mechanical stimuli testing for luminescence switching.
- Computational studies (DFT) to understand photophysical mechanisms.
Main Results:
- Synthesized complexes [Cu2(dppb)2(μ2-η1-C≡C-Ph)2] and [Cu2(dppb)2(μ2-η1-C≡C-PPXZ)2] exhibit high photoluminescence quantum yields (up to 67%) via TADF.
- Demonstrated reversible bicolor luminescence switching upon mechanical stimuli.
- Computational analysis revealed metal-to-ligand charge transfer transitions and cuprophilic interactions facilitating efficient reverse intersystem crossing (RISC).
Conclusions:
- Developed novel copper(I)-based TADF materials with excellent photophysical properties.
- Established a new strategy for creating stimuli-responsive metal-based TADF materials.
- These materials hold promise for advanced display and lighting technologies.
Keywords:
alkynyl ligandsbinuclear Cu complexescuprophilic interactionmechanochromic luminescencemetal TADFMore Related Videos
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