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ultralong organic phosphorescence Modulation of Aromatic Carbonyls and Multi-Component Systems

Chinese Journal of Chemistry 2022年第16期40卷 1987-2000页

作者： Chunguang Ren Zhengshuo Wang Tianjie Wang Jiayi Guo Yifeng Dai Hua Yuan Yeqiang Tan State Key Laboratory of Bio-Fibers and Eco-Textiles&Institute of Marine Biobased Materials&Collage of Materials Science and Engineering Qingdao UniversityQingdaoShandong266071 China

Aromatic carbonyls have evoked sustained attention in the field of room-temperature phosphorescence(RTP).The introduction of carbonyl groups is a general way to achieve RTP for their effective intersystem crossing(ISC)by improving spin-orbit coupling(SOC).With further molecular design and processing strategies,aromatic carbonyls materials with multi-functional and high efficiency ultralong organic phosphorescence(UOP)can be *** review summarizes the mechanism of aromatic carbonyls with UOP in pure aromatic carbonyls and their multi-component *** detailed strategies for improving UOP performance are further *** summary and outlook are presented to expound on the advances and lack of aromatic *** development directions and requirements are also put forward.

关键词： Arynes Carbonyl ligands ultralong organic phosphorescence Molecular design Processing strategy

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Manipulating intermolecular interactions for ultralong organic phosphorescence

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聚集体(英文) 2023年第3期4卷 36-54页

作者： Suzhi Cai Xiaokang Yao Huili Ma Huifang Shi Zhongfu An School of Flexible Electronics(Future Technologies)and Institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjingChina Strait Institute of Flexible Electronic(SIFE Future Technologies)Fujian Normal UniversityFuzhouChina Strait Laboratory of Flexible Electronics(SLoFE) FuzhouChina

ultralong organic phosphorescence(UOP)materials have received considerable attention in the field of organic optoelectronics due to their long lifetime,high exciton utilization,large Stokes shift,and so *** advancements have been achieved through manipulating intermolecular interactions for high-performance UOP materials in recent *** review will discuss the influence of various intermolecular interactions,includingπ-πinteractions,n-πinteractions,halogen bonding,hydrogen bonding,coordinative bonding,and ionic bonding on phosphorescent properties at room temperature,*** summarize the rule of manipulating intermolecular interactions for UOP materials with superior phosphorescent *** review will provide a guideline for developing new UOP materials with superior phosphorescent properties for potential applications in organic electronics and bioelectronics.

关键词： aggregation intermolecular interactions molecular stacking room temperature phosphorescence ultralong organic phosphorescence

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Effect of aggregation on thermally activated delayed fluorescence and ultralong organic phosphorescence:QM/MM study

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Chinese Physics B 2023年第10期32卷 410-419页

作者：张群王晓菲吴智敏李小芳张凯宋玉志范建忠王传奎蔺丽丽 Shandong Key Laboratory of Medical Physics and Image Processing&Shandong Provincial Engineering and Technical Center of Light Manipulations School of Physics and ElectronicsShandong Normal UniversityJinan 250358China

Aggregation-induced thermally activated delayed fluorescence(TADF)phenomena have attracted extensive attention *** this paper,several theoretical models including monomer,dimer,and complex are used for the explanation of the luminescent properties of(R)-5-(9H-carbazol-9-yl)-2-(1,2,3,4-tetrahydronaphthalen-1-yl)isoindoline-1,3-dione((R)-ImNCz),which was recently reported[Chemical Engineering Journal 418129167(2021)].The polarizable continuum model(PCM)and the combined quantum mechanics and molecular mechanics(QM/MM)method are adopted in simulation of the property of the molecule in the gas phase,solvated in acetonitrile and in aggregation *** is found that large spin–orbit coupling(SOC)constants and a smaller energy gap between the first singlet excited state and the first triplet excited state(△E_(st))in prism-like single crystals(SC_(p)-form)are responsible for the TADF of(R)-lmNCz,while no TADF is found in block-like single crystals(SC_(b)-form)with a larger △E_(st).The multiple ultralong phosphorescence(UOP)peaks in the spectrum are of complex origins,and they are related not only to ImNCz but also to a minor amount of impurities(ImNBd)in the crystal prepared in the *** dimer has similar phosphorescence emission wavelengths to the(R)-lmNCz-SC_(p) *** complex composed of(R)-lmNCz and(R)-lmNBd contributes to the phosphorescent emission peak at about 600 nm,and the phosphorescent emission peak at about 650 nm is generated by(R)-*** indicates that the impurity could also contribute to emission in molecular *** present calculations clarify the relationship between the molecular aggregation and the light-emitting properties of the TADF emitters and will therefore be helpful for the design of potentially more useful TADF emitters.

关键词： organic light-emitting diodes thermally activated delayed fluorescence ultralong organic phosphorescence aggregation mode

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A Single-Component Supramolecular organic Framework with Efficient ultralong phosphorescence

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CCS Chemistry 2021年第11期3卷 466-472页

作者： Lulu Song Xiao Wang Meng Zhang Wenyong Jia Qian Wang Wenpeng Ye He Wang Anqi Lv Huili Ma Long Gu Huifang Shi Zhongfu An Wei Huang Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)Nanjing 211816 Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)&Xi’an Institute of Biomedical Materials and Engineering(IBME)Northwestern Polytechnical UniversityXi’an 710072

Supramolecular organic frameworks(SOFs),due to the atomically precise integration of the repeated building units,exhibit intriguing properties and consequently potential applications in chemical and materials science ***,it remains a great challenge to achieve SOFs with ultralong organic phosphorescence(UOP)in a singlecomponent ***,we report metal-free organic compound 9,9′-(6-(2-bromophenethoxy)-1,3,5-triazine-2,4-diyl)bis(9H-carbazole)(DCzPO)with UOP *** to the combination of multiple supramolecular interactions,DCzPO formed a SOF structure with regular hexagonal holes,which shows an ultralong emission lifetime of 398 ms and a phosphorescence efficiency of 3%.So far as we know,among the reported luminescent SOFs,this one is the most highly *** single-component SOF with ultralong phosphorescence will provide a new platform to rationally combine UOP and porous materials.

关键词： ultralong organic phosphorescence noncovalent interactions solid-state structure Haggregation πinteraction

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