A5089591245- Luminescence and Fluorescent Materials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Organic Electronics and Photovoltaics
- Molecular Sensors and Ion Detection
- Organic Light-Emitting Diodes Research
- Conducting polymers and applications
- Perovskite Materials and Applications
- Nanoplatforms for cancer theranostics
- Molecular Junctions and Nanostructures
- Synthesis and Properties of Aromatic Compounds
- Covalent Organic Framework Applications
- Synthesis and properties of polymers
- Electrocatalysts for Energy Conversion
- Photodynamic Therapy Research Studies
- Quantum and electron transport phenomena
- Advanced biosensing and bioanalysis techniques
- Fuel Cells and Related Materials
- Crystallography and molecular interactions
- Supramolecular Self-Assembly in Materials
- Catalytic Cross-Coupling Reactions
- Supramolecular Chemistry and Complexes
- Advanced Sensor and Energy Harvesting Materials
- Analytical Chemistry and Sensors
- Polydiacetylene-based materials and applications
Beijing Institute of Technology
2017-2024
Jilin University
2023-2024
Materials Science & Engineering
2019-2024
Dalian Medical University
2011-2024
First Affiliated Hospital of Dalian Medical University
2016-2024
Wenzhou University
2022
Beijing National Laboratory for Molecular Sciences
2011-2021
University of Chicago
2015-2020
Hokkaido University
2019
Chinese Academy of Sciences
2011-2018
Organic materials with long-lived, color-tunable phosphorescence are potentially useful for optical recording, anti-counterfeiting, and bioimaging. Herein, we develop a series of novel host-guest organic phosphors allowing dynamic color tuning from the cyan (502 nm) to orange red (608 nm). Guest employed tune phosphorescent color, while host interact guest activate emission. These have an ultra-long lifetime 0.7 s maximum efficiency 18.2 %. Although inks already been developed using visible...
Developing highly efficient photocatalyts for water splitting is one of the grand challenges in solar energy conversion. Here, we report rational design and synthesis porous conjugated polymer (PCP) that photocatalytically generates hydrogen from splitting. The mimics natural photosynthetics systems with component to harvest photons transition metal part facilitate catalytic activities. A series PCPs have been synthesized different light harvesting chromophores binding bipyridyl (bpy) sites....
Abstract Organic near-infrared room temperature phosphorescence materials have unparalleled advantages in bioimaging due to their excellent penetrability. However, limited by the energy gap law, (>650 nm) are very rare, moreover, lifetimes of these short. In this work, we obtained organic with long wavelengths (600/657–681/732 and (102–324 ms) for first time through guest-host doped strategy. The guest molecule has sufficient conjugation reduce lowest triplet level host assists exciton...
Organic room temperature phosphorescence (RTP) materials have been used in high resolution imaging and anticounterfeiting due to their long lifetime of ability avoid interference from autofluorescence excitation light. An important factor when considering is the constant intersystem crossing (ISC) process. It great importance develop novel pure organic RTP via precise manipulation ISC process nonradiative decay rate. Encapsulation a luminophore host matrix can quenching caused by presence...
Perylene diimide (PDI) derivatives functionalized at the ortho-position (αPPID, αPBDT) were synthesized and used as electron acceptors in non-fullerene organic photovoltaic cells. Because of good planarity strong π-stacking ortho-functionalized PDI, αPPID αPBDT exhibit a tendency to form aggregates, which endow materials with high mobility. The inverted OPVs employing αPDI-based compounds PBT7-Th donor give highest power conversion efficiency (PCE) values: 4.92% for αPBDT-based devices 3.61%...
Due to their high electron affinities, chemical and thermal stabilities, π‐conjugated molecules with imide/amide frameworks have received considerable attentions as promising candidates for high‐performance optoelectronic materials, particularly organic semiconductors carrier mobilities. The purpose of this Research News is give an overview recent advances in development performance based field‐effect transistors. It covers naphthalene diimide‐, perylene diimide‐ amide‐based conjugated...
Monotonous luminescence has always been a major factor limiting the application of organic room-temperature phosphorescence (RTP) materials. Enhancing and regulating intermolecular interactions between host guest is an effective strategy to achieve excellent performance. In this study, halogen bonding (CN⋅⋅⋅Br) was introduced into host-guest RTP system. The interaction promoted intersystem crossing stabilized triplet excitons, thus helping strong emission. addition, weak sensitive external...
Long-lived organic room-temperature phosphorescence (RTP) has sparked intense explorations, owing to the outstanding optical performance and exceptional applications. Because triplet excitons in RTP experience multifarious relaxation processes resulting from their high sensitivity, spin multiplicity, inevitable nonradiative decay, external quenchers, boosting by modulated triplet-exciton behavior is challenging. Herein, we report that cross-linked polyphosphazene nanospheres can effectively...
This review presents the recent developments in research hotspots of advanced functional polymers; their concepts, design strategies, and applications are briefly discussed.
Abstract Pure organic room-temperature phosphorescent (RTP) materials have been suggested to be promising bioimaging due their good biocompatibility and long emission lifetime. Herein, we report a class of RTP materials. These are developed through the simple introduction an aromatic carbonyl tetraphenylpyrrole molecule also exhibit aggregation-induced (AIE) properties. molecules show non-emission in solution purely aggregated state, which desirable properties for biological imaging. Highly...
Organic host-guest doped materials exhibiting the room temperature phosphorescence (RTP) phenomenon have attracted considerable attention. However, it is still challenging to investigate their corresponding luminescence mechanism, because for systems, very difficult obtain single crystals compared single-component or co-crystal component materials. Herein, we developed a series of organic with triphenylamine (TPA) as host and TPA derivatives different electron-donating groups guests. The...
A series of organic host–guest materials with multifunctional luminescence were constructed. Four isoquinoline derivatives used as the guests, and benzophenone was host. The doped system exhibited excellent dual emission cyan fluorescence orange-yellow room-temperature phosphorescence, could be combined into almost pure white-light emission. Importantly, relative intensity fluorescence–phosphorescence adjusted by changing excitation wavelength, phosphorescence being significantly higher than...
A series of poly(1,4-dihydropyridine)s (PDHPs) were successfully synthesized via one-pot metal-free multicomponent polymerization diacetylenic esters, benzaldehyde, and aniline derivatives. These PDHPs without traditional luminescent units endowed with tunable triplet energy levels by through-space conjugation from the formation different cluster sizes. The large compact clusters can effectively extend phosphorescence wavelength. excitons be stabilized using benzophenone as a rigid matrix to...
Abstract A strategy is pioneered for achieving high-temperature phosphorescence using planar rigid molecules as guests and polymers host matrix. The configuration can resist the thermal vibration of guest at high temperatures, rigidity matrix further enhances resistance guest. doped materials exhibit an afterglow 40 s 293 K, 20 373 6 413 a 1 433 K. experimental results indicate that rotational ability groups connected to gradually increases, performance decreases. In addition, utilizing...
Organic near-infrared room temperature phosphorescence (RTP) materials offer remarkable advantages in bioimaging due to their characteristic time scales and background noise elimination. However, developing RTP for deep tissue imaging still faces challenges since the small band gap may increase non-radiative decay, resulting weak emission short lifetime. In this study, fused-ring pyrrole-based structures were employed as guest molecules construction of long wavelength emissive materials....
In this perspective, the progress in ion-regulated organic RTP materials and described roles of ions, including ion–π interactions, electrostatic coordinate have been summarized.
A general approach to constructing room temperature phosphorescence (RTP) materials involves the incorporation of a phosphorescent emitter into rigid host or polymers with high glass transition temperature. However, these often suffer from poor processability and suboptimal mechanical properties, limiting their practical applications. In this work, we developed benzothiadiazole-based dialkene (BTD-HEA), multifunctional remarkable yield intersystem crossing (Φ
Incorporation of tetramethylammonium iodide into conjugated D-A polymer thin film leads to remarkable enhancement charge mobility.
Porous conjugated polymer (PCP) is a new kind of photocatalyst for photocatalytic hydrogen production (PHP). Here, we report the importance electronic properties acceptor comonomer in determining reactivity 4,8-di(thiophen-2-yl)benzo[1,2-b:4,5-b′]dithiophene (DBD)-based PCP PHP application. It was found that incorporation nitrogen-containing ligand monomers into network an effective strategy to enhance activity. These moderately electron-deficient comonomers enhanced dipole polarization...
The control of the emission properties doping materials through molecular design makes organic potentially promising candidates for many optoelectronic applications and devices. However, systems with high quantum yields persistent luminescence processes have rarely been reported, their mechanisms are still not well established. Here we developed a series purely heavy-atom-free systems. guest molecules can dope either donor or acceptor matrixes, both leading to an enhanced fluorescence (Φ =...
We demonstrate a simple, but efficient, approach for improving the semiconducting performances of DPP-based conjugated D-A polymers. This involves replacement one bulky branching alkyl chain with linear at each DPP unit in regular polymer PDPPSe-10 and PDPPSe-12. The UV–vis absorption, Raman spectra, PDS data, theoretical calculations support that chains ones can weaken steric hindrance, accordingly backbones become more planar rigid. GIWAXS data show incorporation as PDPPSe-12 is beneficial...
In this paper, a new cruciform donor–acceptor molecule 2,2'‐((5,5'‐(3,7‐dicyano‐2,6‐bis(dihexylamino)benzo[1,2‐b:4,5‐b']difuran‐4,8‐diyl)bis(thiophene‐5,2‐diyl))bis (methanylylidene))dimalononitrile ( BDFTM ) is reported. The compound exhibits both remarkable solid‐state red emission and p ‐type semiconducting behavior. dual functions of are ascribed to its unique crystal structure, in which there no intermolecular face‐to‐face π–π interactions, but the molecules associated by CN…π H‐bonding...