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Science China Chemistry 2022年第9期65卷 1715-1719页

作者： Weimin Ning Han Wang shaolong gong Cheng Zhong Chuluo Yang Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan 430072China Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China

Due to narrowband emission and high quantum efficiencies,polycyclic aromatic heterocycles with multi-resonance thermally activated delayed fluorescence(MR-TADF)properties have recently gained considerable attention in the organic optoelectronic *** their great promise in the full visible region covering from blue to red,MR-TADF emitters with ultraviolet emission have been rarely *** locking the two ortho-positions of a triphenylamine core by sulfone groups,a simple polycyclic aromatic heterocycle,BTPT,was facilely constructed,exhibiting 368 nm ultraviolet emission with a narrow full width at half maximum(FWHM)of 33 *** neat film exhibited distinct TADF property with a main emission peak at 388 ***,the enantiomeric crystals of BTPT not only demonstrated significant circularly polarized luminescence(CPL)with large luminescence dissymmetry factor in the 10^(-3) order but also displayed obvious room temperature phosphorescence(RTP).The relationship between this innovative helical unit and unique photophysical properties,including ultraviolet MR-TADF,CPL,and RTP,was reasonably revealed.

关键词： polycyclic aromatic heterocycles thermally activated delayed fluorescence multi-resonance effect ultraviolet emission circularly polarized luminescence room temperature phosphorescence

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Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期 46-95页

作者： Zhong-Liang gong Hong-Jie Zhang Yan Cheng Jianxun Liu Yuhan Ai Yaqin Li Zhihui Feng Qiong Zhang shaolong gong Yong Chen Chang-Jiang Yao Yuan-Yuan Zhu Liang-Jin Xu Yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Photoactive complexes of nonprecious transition metals, mainly including those in the first-row and partially the second-row of the Periodic table of elements, have received increasing attention in view of their low cost and long-term sustainability. They are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices, artificial photosynthesis, photocatalysis, biodiagnostics, and therapeutics, etc. This review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes, including photoactive Zr, V, Cr, Mo, and W complexes, Mn complexes and hybrids, Fe, Co, Ni, and Cu complexes, and Zn and Cd complexes and hybrids. A particular focus is given on the molecular design, modulation of photophysical and photochemical properties, and applications of the representative and lately-developed nonprecious metal complexes. In addition, a perspective on the future development in this field is provided at the end of this review.

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Monoradically luminescent polymers by a super acid-catalyzed polymerization and deep-red electroluminescence

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Science China Chemistry 2020年第9期63卷 1214-1220页

作者： Kebin An Guohua Xie shaolong gong Zhanxiang Chen Xiang Zhou Fan Ni Chuluo Yang Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Department of ChemistryWuhan UniversityWuhan 430072China Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China

Luminescent radicals have received great attention recently due to their idiographic luminescent properties and potential 100%utilization efficiency of doublets under electrical ***,luminescent radical polymers are rarely explored owing to their challenging molecular design and ***,we report an efficient approach to construct luminescent radical polymers by a super acid-catalyzed polymerization reaction proceeded at room temperature,which intrinsically avoid the heavy metal *** obtained polymers exhibit the unique paramagnetic signals,good thermal properties,and excellent ***,the quantifiable electroluminescence of such radical polymers was demonstrated for the first time.

关键词： super acid-catalyzed polymerization doublets polymers electroluminescence organic light-emitting devices

Copper(Ⅰ) complexes with planar chirality realize efficient circularly polarized electroluminescence

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Science China Chemistry 2023年第8期66卷 2274-2282页

作者： Ao Ying Lisi Zhan Yao Tan Xiaosong Cao Chuluo Yang shaolong gong Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan430072China Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China

Chiral organometallic emitters hold great promise in potential and practical applications of circularly polarized organic lightemitting diodes(CP-OLEDs).However,developing luminescent earth-abundant organometallic complexes concurrently exhibiting circularly polarized luminescence(CPL)and high quantum efficiency remains a formidable *** this study,we introduced a typical planar chiral skeleton of a[2.2]paracyclophane moiety into earth-abundant copper(I)complexes with the goal of realizing efficient CPL and thermally activated delayed fluorescence(TADF)*** pairs of proof-of-theconcept copper(I)enantiomers,R_(p)/S_(p)-MAC^(*)-Cu-CzP and R_(p)/S_(p)-MAC^(*)-Cu-CNCzP,were developed using planar chiral[2.2]paracyclophane-based donor ligands in a carbene-metal-amide(CMA)*** panels of enantiomers not only exhibited significant mirror-image CPL signals but also displayed distinct TADF nature with fast reverse intersystem crossing rates of up to 10^(8)s^(-1).The resultant OLEDs based on the MAC^(*)-Cu-Cz P enantiomers manifested efficient circularly polarized electroluminescence with excellent external quantum efficiencies of 13.2%and ultraslow efficiency roll-off(7.7%at 10,000 nits).This article not only demonstrates one of the best performances for CP-OLEDs based on earth-abundant organometallic complexes but also represents the first example of CP-OLEDs from CMA complexes to our knowledge.

关键词： circularly polarized luminescence(CPL) organic light-emitting diode(OLED) copper(Ⅰ)complex carbene-metal-amide(CMA) thermally activated delayed fluorescence(TADF)

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Organic molecules with dual triplet-harvesting channels enable efﬁcient X-ray scintillation and imaging

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Aggregate 2024年第3期5卷 232-238页

作者： Lisi Zhan Yalun Xu Tianhao Chen Yang Tang Cheng Zhong Qianqian Lin Chuluo Yang shaolong gong Department of Chemistry Hubei Key Laboratory on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhanChina Key Lab of Artiﬁcial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhanChina Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and EngineeringShenzhen UniversityShenzhenChina

Organic scintillators have recently gained considerable attentions in X-ray detection for their potential applications in biomedical radiograph and security ***,the weak X-ray absorption and/or inefﬁcient exciton utilization have limited the development and commercialization of organic ***,high-performance X-ray organic scintillators are scarce and organic scintillators with dual triplet-harvesting channels have not been explored ***,we develop several proof-of-concept sulfone-based organic molecules,C1–C7,using different alkoxy chains to manipulate molecular packing *** materials exhibit dual triplet-harvesting channels of thermally activated delayedﬂuorescence(TADF)and room-temperature phosphorescence(RTP)in aggregated ***,these molecules display distinct radioluminescence under the X-ray *** them,C6 behaves the highest light yield of 16,558 photons ***,clear X-ray images are demonstrated in both aggregated state and single-molecule *** spatial resolutions of 15.0 and 10.6 line pairs per millimeter(lp mm-1)are achieved for rigid andﬂexible scintillator screens,exceeding most reported organic and conventional inorganic *** results highlight the great potential of organic molecules with TADF and RTP nature for efﬁcient X-ray scintillation and imaging.

关键词： alkoxy chain engineering organic scintillators radioluminescence room-temperature phosphorescence thermally activated delayedﬂuorescence X-ray imaging

Optimization of boron-containing acceptors towards high-efficiency TADF emitters: sky-blue OLEDs with external quantum efficiency of 32.6%

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Science China Materials 2024年

作者： Xu gong Wei Yang He Zhang Weimin Ning shaolong gong Xiang Gao Chuluo Yang Department of Chemistry Renmin Hospital of Wuhan University Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Department of Pharmacy Renmin Hospital of Wuhan University

Two new thermally activated delayed fluorescence（TADF） molecules, 13-（2,12-di-tert-butyl-5,9-dioxa-13bboranaphtho[3,2,1-de]anthracen-7-yl）-5,5-dimethyl-5,13-dihydrobenzo[4,5]thieno[3,2-c]acridine（BOBT） and 13-(4-（dimesitylboranyl）-3,5-dimethylphenyl)-5,5-dimethyl-5,13-dihydrobenzo[4,5]thieno[3,2-c]acridine（BPBT）, are constructed via connecting the 5,5-dimethyl-5,13-dihydrobenzo[4,5]thieno[3,2-c]acridine（BTDMAC） donor（D） with triarylboron or oxygen-bridged cyclized boron acceptors（A）, respectively. In comparison with the photoluminescence quantum yield（PLQY） of 84% for BPBT, BOBT shows a higher PLQY of100%, due to the multi-resonance effect of the boron-oxygen skeleton. In addition, the D-A-type molecular structural characteristic endows the boron-containing BOBT emitter with a fast reverse intersystem crossing rate on the order of 10～6s-1. The sky-blue organic light-emitting diode（OLED）employing the BOBT emitter achieves state-of-the-art device performances with a high external quantum efficiency of 32.6%.

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Simple Double Hetero[5]helicenes Realize Highly Efficient and Narrowband Circularly Polarized Organic Light-Emitting Diodes

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CCS Chemistry 2022年第11期4卷 3463-3471页

作者： Wei Yang Nengquan Li Jingsheng Miao Lisi Zhan shaolong gong Zhongyan Huang Chuluo Yang Department of Chemistry Renmin Hospital of Wuhan UniversityHubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan 430072 College of Materials Science and Engineering Shenzhen UniversityShenzhen 518060

Helicene-based emitters with unique inherent circularly polarized luminescence(CPL)are promising yet remain a formidable challenge for highly efficient circularly polarized organic light-emitting diodes(CP-OLEDs),ascribed to their tough synthesis,low emission efficiency,and easy racemization in the thermal deposition ***,a pair of helicenebased enantiomers,namely(P)-helicene-BN and(M)-helicene-BN,were developed,which merge helical chirality and the B/N/S inserted polycyclic aromatic framework to concurrently feature CPL and narrow thermally activated delayed fluorescence(TADF)*** from the excellent thermal/photophysical/chiroptical properties,the narrowband green CP-OLEDs based on enantiomers achieved maximum external quantum efficiencies(EQE_(max))of up to 31.5%,and dissymmetry factor(|g_(EL)|)of 2.2×10^(−3).This work reveals the great potential of helicene-based emitters in CP-OLEDs.

关键词： helical chirality multiple-resonance thermally activated delayed fluorescence circularly polarized organic light-emitting diodes double heterohelicene

Luminescent gold(Ⅲ)exciplexes enable efficient multicolor electroluminescence

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Science China Chemistry 2023年第11期66卷 3213-3222页

作者： Lisi Zhan Tianhao Chen Cheng Zhong Xiaosong Cao Yuewei Zhang Yang Zou Zhengyang Bin Jingsong You Dongdong Zhang Lian Duan Chuluo Yang shaolong gong Department of Chemistry Hubei Key Laboratory on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan 430072China Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Shenzhen Research Institute of Wuhan University Shenzhen 518057China Key Laboratory of Green Chemistry and Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China

The control of excited states and related emissive properties of gold(Ⅲ)complexes mainly depends on the modulation of intramolecular electronic interactions among gold(Ⅲ)metal center,chelating ligands and/or peripheral ***,luminescent gold(Ⅲ)systems based on intermolecular electronic interactions have never been *** we report a series of proof-of-concept gold(Ⅲ)exciplexes using a simple gold(Ⅲ)complex,AuDPPy,as an electron *** emissive properties of gold(Ⅲ)exciplexes can be regulated by combining AuDPPy with different ***,these gold(Ⅲ)exciplexes have donor-dependent emission mechanisms:dominant phosphorescence or dual radiative channels of thermally activated delayed fluorescence(TADF)and ***,these gold(Ⅲ)exciplexes deliver green-to-red electroluminescence with external quantum efficiencies(EQEs)of up to 10.1%.More importantly,using these gold(Ⅲ)exciplexes to host multi-resonance TADF emitters results in narrowband yellow,orange,and deep-red electroluminescence with high EQEs of 23.5%,24.4%,and 27.4%,respectively,competitive to the highest values for gold(Ⅲ)OLEDs in similar color gamut.

关键词： gold(Ⅲ)complex exciplexes thermally activated delayed fluorescence phosphorescence organic light-emitting diodes

Tuning of Förster Resonance Energy Transfer in Metal–Organic Frameworks: Toward Amplified Fluorescence Sensing

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CCS Chemistry 2021年第8期3卷 2054-2062页

作者： Bo Gui Xuefen Liu Ge Yu Weixuan Zeng Arindam Mal shaolong gong Chuluo Yang Cheng Wang Sauvage Center for Molecular Sciences and Hubei Provincial Key Laboratory on Organic and Polymeric Optoelectronic Materials College of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072

The assembly of Förster resonance energy transfer(FRET)donor and acceptor for amplified fluorescence sensing has been considered a big ***,by using the multivariate approach,we report the design and synthesis of a ser... 详细信息

关键词： Förster resonance energy transfer stimuli-responsive materials amplification effect fluorescent turn-on sensor metal–organic frameworks

Pyrazine-fused polycyclic aromatic hydrocarbons towards efficient multiple-resonance narrowband deep-blue emission

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Science China Chemistry 2024年

作者： Yajie Wang Wei Yang He Zhang Nengquan Li shaolong gong Xiang Gao Chuluo Yang Department of Chemistry Renmin Hospital of Wuhan University Wuhan University Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and EngineeringShenzhen University College of Biological and Pharmaceutical Science Hubei Key Laboratory of Natural Products Research and DevelopmentChina Three Gorges University Department of Pharmacy Renmin Hospital of Wuhan University

Developing organic multiple-resonance(MR) deep-blue emitters with narrow full widths at half maximum(FWHMs) is crucial for enhancing the color purity of organic light-emitting diodes(OLEDs). However, the exploration of new MR cores remains very limited to date. Furthermore, redshifting the emission color of MR emitters is also a formidable challenge. Pyrazine,characterized by its planar and rigid structure, exhibits a strong electronegativity, which may make it a promising candidate for constructing MR emitters with a red shifted emission compared to indolo[3,2,1-jk]carbazole(ICz)-based MR molecules. Herein,a series of polycyclic aromatic hydrocarbons(PAHs) with MR characteristics are designed and synthesized by integrating a pyrazine core with various electron-donating segments, which exhibit the narrowband deep-blue emission peaks ranging from423 to 459 nm with FWHMs < 50 nm in toluene. It is demonstrated that increasing donor strength and changing meta-to paraoriented nitrogen atom can induce the bathochromic emission. Theoretical investigations reveal that the non-bonding orbital characteristic of pyrazine suppress the undesired stretching vibration and promote resonance effect. The optimized deep-blue OLEDs fabricated with the pyrazine-embedded MR emitters demonstrate a high external quantum efficiency(EQE) of 23.5%,and narrowband emission with an electroluminescence peak at 454 nm.

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