A5100599584- Luminescence and Fluorescent Materials
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Force Microscopy Techniques and Applications
- Polydiacetylene-based materials and applications
- Supramolecular Self-Assembly in Materials
- Molecular Sensors and Ion Detection
- Mechanical and Optical Resonators
- Photochromic and Fluorescence Chemistry
- Porphyrin and Phthalocyanine Chemistry
- Advanced Sensor and Energy Harvesting Materials
- Fluorine in Organic Chemistry
- Synthesis and Properties of Aromatic Compounds
- Conducting polymers and applications
- Crystallography and molecular interactions
- Photoreceptor and optogenetics research
- Analytical Chemistry and Sensors
- Nanoplatforms for cancer theranostics
- Supramolecular Chemistry and Complexes
- Polymer composites and self-healing
- Soil Carbon and Nitrogen Dynamics
- Organic Light-Emitting Diodes Research
- Carbon Nanotubes in Composites
- Cellular Mechanics and Interactions
- Inorganic Fluorides and Related Compounds
Tianjin University
2016-2025
Jilin University
2006-2025
State Key Laboratory of Supramolecular Structure and Materials
2021-2025
Sichuan Agricultural University
2021-2025
Jilin Medical University
2025
China Agricultural University
2024
Nanjing Tech University
2022-2024
Jinan University
2024
Institute of Agricultural Resources and Regional Planning
2023
Chinese Academy of Agricultural Sciences
2023
Toughening Up Elastomers are soft polymer materials widely used in industry and daily life. Inspired by recent work on double-network hydrogels, Ducrot et al. (p. 186 ; see the Perspective Gong ) designed interpenetrated network elastomers that contained isotropically prestretched chains as first network. Double- triple-network structures yielded with very high strength toughness comparison corresponding single networks.
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...
Mechanoluminescent 1,2-dioxetane units, which emit light upon scission of the strained 4-membered ring, were incorporated into main chain segmented copolymers with poly(tetramethylene oxide) soft segments and various hard segments. Test samples polymers emitted applying strain. Polymers hydrogen bonding urethane or amide groups in showed stronger luminescence than polyester similar molecular weight. Increasing strain rate led to luminescence. The positive effect weight on emission intensity...
Abstract Organic crystals which can confine and guide optical waves on command are currently of considerable interest because their tremendous potentials in broadband communications, optoelectronic devices, high‐capacity information storage, etc. Polycyclic arenes, with tunable molecular structures, packing modes, photophysical properties, a highly versatile class organic materials, applicable as waveguide crystals. In this review, the waveguides polycyclic arene‐based discussed, focusing...
The unique topological features of Piezo proteins underlie the lever-like cellular mechanotransduction mechanism. This knowledge inspires us to seek topological/geometric control mechanochromophores with unprecedentedly amplified, synergistic changes in polymers serve as ideal stress probes. Here, by judicious placement two spirolactam rings into aminobenzopyranoxanthene, a series stereo- and regio-isomeric rhodamine-like mechanophores are developed. With labile bonds closely coupled one...
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....
Soil erosion is a significant global environmental issue, especially in important agricultural areas. This study focuses on the Huangshui River Basin Qinghai–Tibet Plateau from 2000 to 2022. The soil intensity, spatiotemporal changes rate, and its socio-economic influencing factors at three spatial scales (basin, city, county) were analyzed. results show that slight predominant across all scales, yet there are some localized areas with more severe erosion, like Guide County Hualong County....
Introduction Phosphorus (P) is a crucial growth-limiting nutrient in soil, much of which remains challenging for plants to absorb and use. Unlike chemical phosphate fertilizers, phosphate-solubilizing microorganisms (PSMs) offer means address available phosphorus deficiency without causing environmental harm. PSMs possess multiple mechanisms solubilization. Although the phosphorus-solubilizing bacteria (PSB) have been well characterized, utilized by fungi (PSF) remain largely unexplored....
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...
5,6,12,13-Tetraazaperopyrenes with different number of tert-butyl groups (c-TAPP-T, c-TAPP-H) were synthesized, via four-fold Bischler-Napieralski cyclization as the key step. As deduced from single-crystal structures and optical properties, N-doping substitution type allow for a precise control intermolecular interactions. Compared to reported 1,3,8,10-tetraazaperopyrenes, significantly packing modes found in 5,6,12,13-tetraazaperopyrenes. Going c-TAPP-T c-TAPP-H, two additional lead...
Abstract Mechanofluorochromic polymers, which can indicate damage or excessive stress in highly polarized environments with a clearly perceptible optical signal, are potentially useful variety of exciting applications. However, most reported fluorochromic mechanophores exhibit poor color contrast and fluorescence penetration, irreversible phase after mechanical activation. Here, this challenge is tackled by designing engineering novel near‐infrared (NIR) emissive, rhodanmin derived...
Optical force probes that can release force-dependent and visualized signals with minimal changes in the polymer main chains under mechanical load are highly sought after but currently limited. In this study, we introduce a flex-activated mechanophore (FA) based on Diels-Alder adduct of anthracene dimethyl acetylenedicarboxylatea exhibits turn-on mechanofluorescence. We demonstrate when FA is incorporated into networks or its crystalline state, it fluorescent anthracenes through...
Abstract Mechanochromic functionality realized via the force‐responsive mechanophores in polymers has great potential for damage sensing and information storage. Mechanophores with ability to recognize multiple stimuli tunable chromic characteristics are highly sought after versatile color programmability. Nevertheless, majority of based on single‐component chromophores limited sensitivity, or require additional fabrication technology multi‐modal chromism. Here, we report a novel...
A novel class of dumbbell-shaped dendritic molecules with a p-terphenylene core was synthesized, and their self-assembling properties were investigated. The incorporation bulky wedges to the central stiff aromatic scaffolds could finely tune solubility in many organic solvents. Unlike self-assembly behavior p-terphenylen-1,4"-ylenebis(dodecanamide), cored different generation form gels several kinds solvents through cooperative effect pi-pi stacking, hydrogen-bonding, van der Waals forces....
An efficient one-pot, three-component synthesis of highly substituted bicyclic pyridines containing a ring-junction nitrogen, starting from simple and readily available materials, is described. Cyclocondensation heterocyclic ketene aminals (HKAs), triethoxymethane, active methylene compounds by refluxing under solvent-free catalyst-free conditions, provided in excellent yields.
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...
An efficient transition-metal-free hydrodefluorination reaction of trifluoromethyl alkenes for accessing gem -difluoroalkenes is developed. It was surprising to find that the phosphoryl anion able mediate defluorination.
Open AccessCCS ChemistryRESEARCH ARTICLE20 May 2022Diselenide as a Dual Functional Mechanophore Capable of Stress Self-Reporting and Self-Strengthening in Polyurethane Elastomers Xiaopei Li, Fan Yang, Yiran Cheng Liu, Peng Zhao, Yi Cao, Huaping Xu Yulan Chen Li Department Chemistry, Tianjin Key Laboratory Molecular Optoelectronic Science, University, 300072 , Yang Physics, Collaborative Innovation Center Advanced Microstructures, National Solid State Microstructure, Nanjing Nanjing, Jiangsu...
The latest achievements in transition-metal-catalyzed enantioselective defluorinative coupling reactions have been comprehensively summarized on the basis of classification transition-metal catalysts.