A5101602141- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Molecular Sensors and Ion Detection
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Photochromic and Fluorescence Chemistry
- Polydiacetylene-based materials and applications
- Porphyrin and Phthalocyanine Chemistry
- Nonlinear Optical Materials Studies
- Perovskite Materials and Applications
- Nanoplatforms for cancer theranostics
- Photochemistry and Electron Transfer Studies
- Ecology and Vegetation Dynamics Studies
- Polymer Science and PVC
- Molecular Junctions and Nanostructures
- Hydrology and Sediment Transport Processes
- Crystallography and molecular interactions
- Species Distribution and Climate Change
- bioluminescence and chemiluminescence research
- Plant Water Relations and Carbon Dynamics
- GNSS positioning and interference
- Silicone and Siloxane Chemistry
- Advanced Polymer Synthesis and Characterization
Qingdao University of Science and Technology
2016-2025
Hunan Agricultural University
2025
Shandong University
2022-2024
Jinzhou Medical University
2024
State Forestry and Grassland Administration
2023-2024
Changjiang Water Resources Commission
2022-2023
Huazhong University of Science and Technology
2023
Shenzhen Institutes of Advanced Technology
2023
Xinjiang Astronomical Observatory
2022
Chinese Academy of Sciences
2022
Nanocrystalline infrared-to-visible up-conversion phosphors, ytterbium and erbium co-doped sodium yttrium fluoride, were synthesized. Spherical particles with narrow size distribution prepared by a co-precipitation method in the presence of ethylenediaminetetraacetic acid (EDTA). Particles controlled range 37 to 166 nm diameter obtained adjusting molar ratio EDTA total lanthanides. Although as-prepared nanoparticles emit very weak fluorescence when excited infrared light, emission was...
This review focuses on alkyl length effects solid-state fluorescence and mechanochromic behaviors, the purpose is to arouse one's further attention alkyl-length effect in design, synthesis structure–property investigation of organic optoelectronic materials.
A new pure fluorescent blue HLCT-emitter was designed and synthesized. Highly efficient non-doped OLEDs with low efficiency roll-off were achieved.
In this work, we have synthesized 9,10-bis[(9,9-dialkylfluorene-2-yl)vinyl]anthracene derivatives (FLA-Cnn) with propyl, pentyl, and dodecyl side chains to investigate their fluorescence properties. The results show that FLA-Cnn exhibit not only an aggregation-induced emission effect but also reversible piezofluorochromic (PFC) behaviour. Interestingly, the grinding-induced spectral shifts (ΔλPFC) of solids are alkyl length-dependent: longer alkyl-containing more blue-shifted larger ΔλPFC....
Aggregation-induced emission-active 9,10-bis[(N-alkylcarbazol-3-yl)vinyl]anthracenes (ACZn) with different length of N-alkyl chains have been designed and synthesized to systematically investigate the effect chain on solid-state fluorescence properties. The results show that these materials exhibit not only reversibly pronounced red shift piezofluorochromism (PFC), but also length-dependent efficiencies are decreased upon grinding or increase length. Meanwhile, emission spectra pristine...
Changing the linking positions of alkoxy chains can significantly alter aggregation-induced emission and piezofluorochromic activities 9,10-bis(alkoxystyryl)anthracenes.
We have synthesized two 9,10-bis(p-dialkylaminostyryl)anthracene derivatives, 9,10-bis(p-dimethylaminostyryl)anthracene (9,10-MADSA), and 9,10-bis(p-dipropylaminostyryl)anthracene (9,10-PADSA), the photophysical properties in solution, aqueous suspension, crystalline state are comparatively investigated. Their twisted conjugated skeleton D-π-D pattern make molecular solution show weak fluorescence suspension exhibit aggregation-induced one- two-photon emission. The crystals of 9,10-MADSA...
Room temperature phosphorescent (RTP) polymers have advantages of strength, toughness, and processing application flexibility over organic small molecular crystals, but the current RTP are all from rigid plastics involve chemical linkage hydrogen ionic bonds, thermoplastic elastomer has not been attempted realized. Moreover, solution-processed films by simply mixing materials can only show weak single blue RTP. Here it is presented that such films, once thermomechanically plasticized, emit...
Abstract One of the most important issues organic light‐emitting diode (OLED) is highly efficient blue‐emissive material, which demands both excellent photoluminescent quantum yield (PLQY) and balanced carrier mobilities. Herein, a series donor–π–acceptor (D–π–A) materials with fluorene π‐bridge their D–A analogues are synthesized discovered theoretical combined experimental method. Based on electron mobility oxadiazole (OXZ) acceptor, it further proven that insertion can not only contribute...
Abstract High efficiency and luminance are critical for commercialized blue organic light‐emitting diodes (OLEDs). Herein, a novel donor–acceptor (D–A) blue‐emissive molecule with weak donor acceptor is synthesized. The moderate hybrid local charge transfer (HLCT) state character endows PPIBPO fluorescence high quantum efficiency. More importantly, the rigid, rod‐like molecular structure gives rise to regularity of stacking pattern PPIBPO, which enables its extraordinary carrier mobilities...
In situ grafting 1%-1‱ N -phenyl carbazol-2-yl-boronic acid to PVA by thermoplastic processing can achieve RTP lifetimes of 3.512–4.444 s, revealing the dual importance dopant molecular modification and material aggregate structure.
A series of 2,6-bis(p-dialkylaminostyryl)-9,10-distyrylanthracene (FCn) cruciforms with N-alkyl chains different lengths have been synthesized, and their aggregation-enhanced fluorescence piezochromic luminescence (PFC) behaviours are investigated. These 9,10-distyrylanthracene-containing exhibit relatively low quantum yields (Φ) in THF solution (Φ ≈ 10%) moderate emission aqueous media 25%), but strong chain length-dependent solid-state emission. Grinding pressing experiments indicate that...
We have synthesized three N-monoalkylated DPP (mDPP) derivatives, 3,6-bis(4-chloro-/methyl-/bromo-phenyl)-2-octyl-pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-diones (mDPP-Cl/mDPP-Me/mDPP-Br), by facile one-step monoalkylation of commercially available or easy-prepared corresponding derivatives. All the compounds high fluorescence quantum yields (Φ) and exhibit usable two-photon absorption cross-sections (δ = 58–87 GM). They are not only effective one-photon but also more chemosensors selectively for...
Abstract Low charge injection and unbalanced carrier transport are unfavorable factors for highly efficient near‐ultraviolet (NUV) electroluminescence (EL) emitters. The construction of weak donor‐ acceptor‐containing fluorophores has been utilized as a common solution to these issues. Few fluorescent emitters simultaneously exhibiting NUV emission high/balanced charge‐transport properties have reported. Herein, new 1D donor–π–acceptor molecule...
Tremendous efforts have been made on researching triplet–triplet annihilation (TTA) and thermally activated delayed fluorescence (TADF) materials for realizing high-efficiency blue organic light-emitting diodes (OLEDs) through utilizing triplet exciton conversion to the lowest singlet excited state (S1) from (T1). However, hot upper energy level (Tn, n > 1) is an increasingly promising method pure-blue non-doped OLEDs with performances comparable those of TTA TADF materials. Herein, two...
Open AccessCCS ChemistryRESEARCH ARTICLE5 Sep 2022Hydrogen-Bonded Dopant-Free Hole Transport Material Enables Efficient and Stable Inverted Perovskite Solar Cells Rui Li†, Chongwen Maning Liu, Paola Vivo, Meng Zheng, Zhicheng Dai, Jingbo Zhan, Benlin He, Haiyan Li, Wenjun Yang, Zhongmin Zhou Haichang Zhang Li† Key Laboratory for Rubber-Plastics of Ministry Education/Shandong Province, School Polymer Science Technology, Qingdao University 266042 †R. Li C. contributed equally to this...
Abstract Novel host materials and their molecular design methods for phosphorescent are crucial the application of organic light emitting diodes (PhOLEDs), which require balanced carrier injection sufficient triplet energy levels ( E T ). Herein, two materials, namely PPI22PPPBO PPI33PPPBO, designed by varying linkage benzoxazole (PBO) phenanthroimidazole (PPI) groups with appropriate green, yellow, red phosphors. The meta‐link PPI33PPPBO is not only smaller π‐conjugation, but also more...
This work demonstrates for the first time that emitters with appropriate qualifications can affect IC from S 1 to 0 and of triple excluded state, achieving high-efficiency device performance.