A5100334720- Luminescence and Fluorescent Materials
- Force Microscopy Techniques and Applications
- Mechanical and Optical Resonators
- Porphyrin and Phthalocyanine Chemistry
- Covalent Organic Framework Applications
- Nanoplatforms for cancer theranostics
- Analytical Chemistry and Sensors
- Molecular Sensors and Ion Detection
- Advanced Sensor and Energy Harvesting Materials
- Photochromic and Fluorescence Chemistry
- Advanced Photocatalysis Techniques
- Lipid Membrane Structure and Behavior
- Carbon Nanotubes in Composites
- Polydiacetylene-based materials and applications
- Photoreceptor and optogenetics research
- Metal-Organic Frameworks: Synthesis and Applications
- Polymer composites and self-healing
- Nuclear Engineering Thermal-Hydraulics
- Nuclear and radioactivity studies
- Polyoxometalates: Synthesis and Applications
- Advanced Memory and Neural Computing
- Numerical methods in engineering
- Composite Structure Analysis and Optimization
- Nonlocal and gradient elasticity in micro/nano structures
- Synthesis of Indole Derivatives
Tianjin University
2016-2025
Chinese Academy of Sciences
2024
Fuzhou University
2024
Fujian Institute of Research on the Structure of Matter
2024
University of Jinan
2022
State Key Laboratory of Chemobiosensing and Chemometrics
2021
Hunan University
2021
Collaborative Innovation Center of Chemical Science and Engineering Tianjin
2016-2020
Southwest Minzu University
2014
Chengdu University
2014
N,N′-Bicarbazole with almost spatially vertical structure was synthesized by a facile method and demonstrated as versatile building block for conjugated microporous polymers (CMPs) through transition metal catalyzed coupling polymerizations including Yamamoto, Suzuki, Sonogashira polymerizations. The porosities morphologies of four N,N′-bicarbazole-based CMPs were systematically studied compared. With high surface area, good thermal stability structure, the CMP Yamamoto polymerization...
We report a versatile mechanophore exhibiting vividly detectable, light-regulable multicolor mechanochromism. Such optical features rely on the synergistic coupling of mechanochromic bis-rhodamine (Rh) and photochromic bisthienylethene (BTE). Poly(methyl acrylate)s incorporating this bis-mechanophore can be mechanically activated under sonication. The relative distribution two distinctly colored fluorescent Rh ring-opening products is altered with different magnitudes applied force....
1,2-Dioxetane is a chemiluminescent mechanophore that allows the study of bond scission events with high sensitivity and resolution. We now make use this mechanoluminescent probe to give microscopic view self-healing behaviors. Herein, series robust polyurethanes, 1,2-dioxetane aliphatic disulfide incorporated in main chain confined hard microphase, are developed. Taking advantage phase-locked bonds design strategy, these polymers exhibit excellent mechanical properties capability as well...
Smart luminescent materials that are responsive to external stimuli have received considerable attention. Here, we report a new D–A type 1,2-pyridiazine derivative (3,4,5,6-tetrakis(4-methoxyphenyl)pyridazine (TPP)) exhibiting turn-on fluorescence upon acid exposure both in solution and the solid state. The protonation of ring caused variation emission colors acidification species from blue (406 nm) orange-red (630 with huge Δλem (224 nm). As result, synthetic rainbow could be achieved one...
Mechanoresponsive polymers with intense red emission are highly desirable in view of the strong penetrability and high resolution luminescence. Herein we introduce sensitized luminescence rare-earth Eu(III) complexes into mechanochemiluminescence from polymeric dioxetane a covalent way. By controlling energy-transfer process mechanically broken to center, bright transparent poly(methyl acrylate) films was achieved for first time. Importantly, mechanoluminescence sensitivity is greatly...
1,2-Dioxetane was found as a mechanoluminescent probe when it covalently linked into polymer backbone. To bring about further leap in sensitivity without sacrificing thermal stability of this mechanophore is highly desirable while great challenge. Herein, we presented new strategy to improve the 1,2-dioxetane-containing polyurethanes (PUs) by incorporating fluorescent dyes repeating units main chains PUs. This approach provides simplified procedures obtain films with high quality and...
With the combination of mechanochemiluminescence from 1,2-dioxetane coupled polymers and conjugated microporous polymer nanosheets, a new kind filling-type mechanolumninescent composite was developed.
The synthetic control over pore structure and multifunctionality remain highly desirable for conjugated microporous polymers (CMPs). Here, we demonstrate that the 1,10-phenanthroline-like S,N-heteroacenes are ideal building blocks to construct a new kind of CMPs by Sonogashira polymerization. enlarged conjugation rigidity repeating units played vital role in formation permanent micropores with large specific surface areas. versatility these applications as fluorescent sensors efficient...
An optomechanical study of a series mechanochemiluminescent polyurethanes with different hard segments provides detailed picture microphase separation dependent force transduction during their failure process.
A series of Se–Se-linked polystyrenes have been synthesized and subjected to pulse sonication. Comprehensive investigations based on GPC measurements, derivatization experiments, EPR spectroscopy verify the sonication-induced bond scission metathesis these polymeric diselenides. The kinetics energy conversion efficiency by different stimuli including heating, light, sonication are compared, which demonstrate that can offer an alternative way break Se–Se realize selective reactions between...
Abstract Nitrogen atom doped polycyclic aromatic hydrocarbons, the so‐called aza‐PAHs, and their conjugated polymers are applicable as functional chromophores organic semiconductors. Prosperous developments of PAHs heterocyclic chemistry have been made possible by considerable improvements in synthetic methodologies, among which one‐step reactions leading directly to an aza‐conjugated ring highly desirable. Bischler‐ Napieralski cyclization, old yet efficient reaction, can accomplish this...
Phenothiazine derivatives have attracted tremendous research attention due to their rich redox-active properties. In this work, a phenothiazine-based, highly crystalline, and two-dimensional covalent organic framework (PTz-An-COF) was developed. PTz-An-COF exhibited low bandgap of 1.92 eV with broad visible-light absorption. Interestingly, can serve as an efficient photoinitiator for visible-light-induced radical polymerization methyl acrylate. Remarkably, be easily recycled maintains the...
Abstract We report a versatile mechanophore exhibiting vividly detectable, light‐regulable multicolor mechanochromism. Such optical features rely on the synergistic coupling of mechanochromic bis‐rhodamine (Rh) and photochromic bisthienylethene (BTE). Poly(methyl acrylate)s incorporating this bis‐mechanophore can be mechanically activated under sonication. The relative distribution two distinctly colored fluorescent Rh ring‐opening products is altered with different magnitudes applied force....
Abstract A series of mechanoluminescent polyurethane/siloxane hybrid polymers are synthesized through mild polycondensation and sol–gel hydrolysis process with 1,2‐dioxetane as the mechanophore. With joint advantages polyurethanes silicon‐containing polymers, these exhibit good mechanical strength, high elasticity, water resistance properties. Herein, acts an autoluminescent probe chain scission, which could emit visible sensitive signals covalent bond breaking in under force. Thus, scission...
Open AccessCCS ChemistryRESEARCH ARTICLE1 May 2021Covalently Cross-Linked and Mechanochemiluminescent Polyolefins Capable of Self-Healing Self-Reporting Yakui Deng, Yuan Yulan Chen Deng Tianjin Key Laboratory Molecular Optoelectronic Science, Department Chemistry, University, 300354. , *Corresponding author: E-mail Address: [email protected] https://doi.org/10.31635/ccschem.020.202000303 SectionsSupplemental MaterialAboutAbstractPDF ToolsAdd to favoritesTrack Citations...
Abstract The solution and solid‐state structures of 3,3′‐diethyl‐4,4′,8,8′,9,9′,10,10′‐octamethyl‐6,6′‐di‐ p ‐tolyl‐bisBODIPY, a potent fluorescent dye, were examined by X‐ray diffraction NMR spectroscopy. crystallographic analysis resulted in two different conformations for the fluorophor with dihedral angles between C 9 N 2 B subunits 91.9 96.8°. presence is consequence crystal packing as 3D structure composed alternating layers BisBODIPY molecules without cocrystallized solvent. In...
Abstract Improving mechanochemiluminescent (MCL) sensitivity of 1,2‐dioxetane containing polymers is important for the applications stress‐reporting soft materials. Herein, a series MCL poly(dimethylsiloxane) (PDMS) have been synthesized by simultaneously incorporating difluoroboron β‐diketonate dye and as co‐crosslinkers to tune energy transfer process across polymer chains. By covalently linked fluoroboron complex in PDMS network, aggregation overcome. Owing its excellent opto‐physical...
Abstract Quantitative and real-time characterization of mechanically induced bond-scission events taken place in polymeric hydrogels is essential to uncover their fracture mechanics. Herein, a class mechanochemiluminescent swelling have been synthesized through facile micellar copolymerization method using chemiluminescent bisacrylate-modified bis(adamantyl)-1,2-dioxetane (Ad) as crosslinker. This design synthetic strategy ensure intense mechanochemiluminescence from Ad located hydrophobic...
Xanthene-modified 1,2-dioxetane (Xa-Ad) derivatives were designed and synthesized using a facile protocol, their mechanical activity was identified for the first time to best of our knowledge.