Polymers
·
2020
·Vol. 12
·期 3
·719
·
IF 3.426
Zhiqiang Tan,Huimin Su,Yiwen Guo,Huan Liu,Bo Liao,Abid Muhammad Amin,Qingquan Liu
Conjugated microporous polymers (CMPs) have conjugated skeleton and permanent porosity, and exhibit huge potential in developing novel functional materials for resolving the challenging energy and environment issues. Metal-containing CMPs often exhibited unique properties. In the present manuscript, ferrocene-based conjugated microporous polymers (FcCMPs) were designed and synthesized with 1,1′-dibromoferrocene and 5,10,15,20-Tetrakis(4- bromophenyl) porphyrin (FcCMP-1) or Tetra (p-bromophenyl) methane (FcCMP-2) as building units via Yamamoto coupling. FcCMPs were amorphous, and exhibited excellent thermal and physicochemical stability. The BET surface area of FcCMP-1 and FcCMP-2 was 638 m2/g and 422 m2/g, respectively. In comparison with FcCMP-2, FcCMP-1 displayed better gas storage capacity due to higher porosity. FcCMPs were also used as an adsorbent for removal of methyl violet from aqueous solution, and exhibited excellent adsorption properties due to the interaction between electron-rich conjugated structure of the polymers and methyl violet with cationic groups. Moreover, FcCMPs could be extracted and regenerated by an eluent and then re-used for high efficient removal of methyl violet.Keywords:conjugated microporous polymers (CMPs);ferrocene;gas adsorption;dye removal
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 6
·期 1
·266-274
·
IF 8.867
Fei Wang,Feng Ren,Dan Ma,Peng Mu,Huijuan Wei,Chaohu Xiao,Zhaoqi Zhu,Hanxue Sun,Weidong Liang,Jixiang Chen,Lihua Chen,An Li
Efficient elimination of widespread microbial contamination in water is of great importance to address severe environmental issues. Herein, we demonstrate a new strategy for fabricating novel CMPs-based antibacterial agents by covalently introducing hydantoin groups into CMPs networks (named as CMPH). The resulting CMPH show excellent physicochemical stability, large specific surface areas (up to 1411 m2 g−1) and high antibacterial activity (completely inhibiting growth of bacteria at 100 μg mL−1 dispersion concentration in 120 min). To our knowledge, this is the first example of a CMPs-based antibacterial agent. Furthermore, the CMPH can not only be fabricated as monolithic nanoporous foam, but also can be loaded on diverse porous substrates to fabricate cost-effective sterilization materials, showing great potentials for their practical applications in water cleanness. More importantly, the findings of this study may open a versatile route for design and fabrication of CMPs-based antibacterial materials by the facile introduction of diverse of antibacterial substituents into CMPs building blocks followed by a simple one-pot reaction.
研究领域:
材料科学
·
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Xiaoxia Ye,Juan Liu,Xueying Chen,Dongjun Chen,Zhen Qian,Jie Chen,Chunxiang Lin
Extracting uranium from seawater has become an important method to supplement the nuclear industry. Herein, we introduce a simple route to load conjugated microporous polymers onto collagen fiber membranes, resulting in a novel membrane adsorbent material (CMPA-F/CFM) for uranium capture. Its Langmuir adsorption capacity reaches 304.9 mg·g −1 (at 318 K), with fast adsorption kinetic of 60 min, and excellent adsorption selectivity with K d = 4.69 × 10 4 mL·g −1 under the temperature of 298 K, initial concentration of 50 mg·L -1 , and pH = 7, thus allowing a satisfactory adsorption performance in a 7-day real ocean experiment with a uranium adsorption capacity of 1.25 mg·g −1 . Furthermore, in continuous dynamic adsorption experiments, CMPA-F/CFM could treat up to 19.0 L·g −1 of low-enriched uranium (LEU) solution (1 mg·L -1 ), with a uranium removal rate of up to 87.5 % (10 L of seawater). This study demonstrates broad potential application of membrane adsorption in extraction of low-enriched uranium.
研究领域:
材料科学
·
环境科学
·
核能技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xinyang Xu,Jiawen Liu,Yixin Sun,Zhonghua Li
Among the various advanced photocatalytic materials, the organic conjugated microporous polymer (CMP) photocatalysts have garnered significant interest due to their exceptional efficiency in photogenerated electron transfer and their structural versatility. In this study, we developed two novel donor-acceptor 1 -acceptor 2 CMP systems through varying the electron donor unit. Pyrene (P) and triphenylamine (T) were acted as donor units (D), respectively, meanwhile dibenzothiophene-S,S-dioxide (BTDO, A 1 ) and 3,4-ethylenedioxythiophene (EDOT, A 2 ) as their acceptors to construct two D−A 1 −A 2 type CMP photocatalysts, P-BTDO-EDOT and T-BTDO-EDOT. Their photocatalytic performances were compared and studied through photocatalytic hydrogen production. The findings show that P-BTDO-EDOT possesses higher photocatalytic hydrogen production activity (87.21 mmol g −1 h −1 ) than T-BTDO-EDOT (66.25 mmol g −1 h −1 ) under visible light, attributing to its stable conjugated architecture, larger specific surface area, exceptional optoelectronic capability, wider light absorption, donor unit pyrene with strong electron-donating and efficient charge separation ability. This work not only highlights the potential for designing innovative CMP molecular structures with D−A 1 −A 2 system, but also opens up a new pathway for developing high-efficiency photocatalysts.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Shujuan Wu,Zhaoqi Zhu,Chao Liu,Yanning Su,Fei Wang,Wei Bai,Hanxue Sun,Weidong Liang,An Li
The development of functional materials with better flame-retardant and thermal insulation properties has attracted considerable attention for energy storage applications in modern society. Here, we describe a facile approach for the preparation of conjugated microporous polymer hollow spheres (CMP-HSs) by using SiO 2 nanoparticles as a template via the Sonogashira-Hagihara cross-coupling reaction. The as-synthesized CMP-HSs have good thermal stability with a thermal decomposition temperature of up to 281 °C, high porosity (the BET specific surface area is measured to be approximately 666 m 2 g −1 ) along with lipophilic and hydrophobic characteristics. To further improve their flame retardancy, CMP-HSs were treated with dimethyl phosphonate (DMMP) though an immersion method to prepare the CMP-HSs composite (CMP-HSs-DMMP) flame-retardants. By introducing CMP-HSs-DMMP into the epoxy resin (EP) matrix, the as-prepared EP composites showed excellent flame-retardant properties, e.g., the peak heat release rate (pHRR) and total heat release (THR) value of EP composites containing only 0.2% CMP-HSs-DMMP flame-retardant were 650.9 kW m −2 and 79.4 MJ m −2 respectively, in the range of 0 °C − 650 °C, which are 19.6 ± 2% and 19.1 ± 5% lower than that of pure EP within the same temperature range. Considering the significant enhancement of its flame retardancy with only a slight dosage of CMP-HSs-DMMP, such CMP hollow sphere-based flame-retardant composites may have great potential as functional bulk materials or coatings in a variety of fireproofing applications.
研究领域:
材料科学
·
能源存储
·
阻燃材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Mingxing Wang,Zhaoqi Zhu,Chenchen Cheng,Hanxue Sun,Jiyan Li,Rui Jiao,An Li
The development of new materials with heat-insulating and flame-retardant properties is particularly important in the development of various fields such as construction, electric power, transportation, and aerospace. In this study, two kinds of conjugated microporous polymer (CMPs) nanospheres with hollow structures (H CMPs) were prepared by Sonogashira-Hagihara cross-coupling reaction using 1,3,5-triethynylbenzene and 1,4-diethynylbenzene as the monomers and SiO 2 nanospheres as the hard templates, respectively. Then 9,10-dihydro-9-oxa-10-phospha-phenanthrene-10-oxide (DOPO) and chitosan (CTS) were loaded on the surface of H CMPs using a layer-by-layer assembly method to obtain the composite flame retardant H CMPs@CTS@DOPO. H CMP1@CTS@DOPO, H CMP2@CTS@DOPO and ammonium polyphosphate (APP) were introduced into the flammable epoxy resin (EP) in different ratios to obtain EP1, EP2, EP3, EP4 and EP5, which were compared with pure EP to evaluate their thermal insulation and flame retardant properties. The thermal conductivity of EP2, EP3 was measured to be 0.0359 W m -1 K -1 and 0.0170 W m -1 K -1 , respectively, which has excellent thermal insulation performance. The peak heat release rate (pHRR) of EP4, EP5 was reduced by 57.3 % and 64.8 %, and the peak CO 2 production (CO 2 P) was reduced by 72.7 % and 77.3 %, respectively, compared with that of pure EP, as measured by conical calorimetry (CC), which has an excellent flame retardant effect. Therefore, H CMPs@CTS@DOPO, as a new class of heat-insulating and flame-retardant materials, has great potential for application in the fields of construction, electronics and transportation.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Can Lang,Hao Gong,Gang Ye,Pachaiyappan Murugan,Zheng-Hui Xie,Yi-Fan Dai,Kai Yang,Changlin Yu,Shi-Yong Liu
Conjugated microporous polymers (CMPs), featured by broad tunability in molecule design, structure and properties, have been widely used as photocatalysts for water splitting to produce hydrogen. However, the conventional donor–acceptor (D-A) binary CMPs have not achieved satisfactory performance so far. In this contribution, a series of D 1 -D 2 -A ternary CMPs are synthesized by the atom-economical direct C H arylation polymerization (DArP), wherein the dibenzo[ b , d ]thiophene-S,S-dioxide (BTDO), tetraphenylethylene (TPE) and 3,4-ethylenedioxythiophene (EDOT) units serve as the acceptor (A), donor D 1 and donor D 2 , respectively. The structure–property correlations of the CMPs are systematically investigated by optical, electrochemical, water contact angle, and hydrogen production performance tests, revealing that the ternary D 1 -D 2 -A CMPs can maximize hydrophilicity and charge separation through the synergistic effect of BTDO, EDOT, and TPE building blocks. As a result, the ternary CMP-3 with an optimal D/A ratio achieves the highest photocatalytic hydrogen evolution rate up to 81.4 mmol g −1 h −1 without the aid of Pt co-catalyst, which has a 26-fold and 101-fold improvement compared to the pristine D 1 -A and D 1 -D 2 binary CMPs, respectively. Meanwhile, a high apparent quantum yield of 11.1 % at 500 nm is successfully achieved. Density functional theory calculation discloses that D 1 -D 2 -A ternary CMPs possess the desirable molecular geometry and superior charge separation. This work provides a new design and synthetic strategy for the high-performance CMP-based photocatalysts.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Hanxue Sun,Cailin Guo,Yanju Jing,Anli Yi,Jin Wang,Rui Jiao,Jiyan Li,Zhaoqi Zhu,Peng Mu,An Li
The air pollution caused by particulate matters (PMs) poses a severe threat to the human health. In particular, the fine particles with diameter smaller than 2.5 μm (PM 2.5 ) can be carriers of various bacteria and viruses, accelerating spread of epidemic. In this work, we synthesized two robust and flexible conjugated microporous polymer (CMP) aerogels for PMs removal, via one-step coupling polymerization of arylethynylenes and aryl halides with different molecular configuration. The resulting CMP aerogels comprise of hollow nanotubes with 3D porous network and high surface areas up to 660 m 2 /g. The efficiency of CMP aerogels for PM 2.5 and PM 10 was 99.5 ± 0.3 % and 99.8 ± 0.1 % with a long-term durability. In combination with their physicochemical stability and inherent surface hydrophobicity, a high efficiency for PM 2.5 filtration more than 99.6 ± 0.1 % also can be obtained at a high humidity at room temperature both for the two CMP aerogels. In addition, benefiting from the rich alkynyl groups in skeletons, post-modification of the resulting CMP aerogels with thiol-yne chemistry followed by silver ion uptake gives rise to antibacterial materials with outstanding activity for gram-positive strains far superior to other porous organic polymer materials. This work provides a new avenue to fabricate bifunctional CMPs derived porous aerogels for air filtration with high performance and antibacterial activity, and is expected to expand the application of CMPs in environmental purification.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 31
·e52731
·
IF 3.057
Qi-Meige Hasi,Yuping Guo,Shanshan Wang,Jiale Yu,Zhichao Han,Chaohu Xiao,Yuhan Zhang,Lihua Chen
Efficient elimination of organics or oils in water has become a global concern due to their severely environmental pollution. In this work, two kinds of absorbents based on the doping of conjugated microporous polymers onto sponges (CMPs@sponges) were prepared by in situ Sonogashira-Hagihara coupling reaction of the monomers in the presence of melamine sponge. The as-synthesized CMPs@sponges possess excellent thermal and physicochemical stability. Owing to the excellent hydrophobic character of the CMPs@sponges, which exhibit high oil/water separation efficiency through adsorption process. The CMPs@sponges show desirable ability for the adsorption of oils and organic solvents with the values of 24–64 g/g and 13–36 g/g, and the adsorption properties remain unchanged after 10 cycles with excellent cycling stability. Even the CMPs@sponges are immersed in different pH solutions, which still maintain their original superhydrophobicity. In addition, CMPs@sponges can constantly separate and recover oil and organic solvent based on the help of vacuum pump, and the separation efficiency still remained above 95% after 10 repetitions. It was worth noting that the CMPs@sponges can remove not only the organic solvents but also the trace benzene contaminants from water, and with the removal rate of more than 85%. Furthermore, the as-synthesized CMPs@sponges possess high oil/water separation properties that may be attributed to the physical adsorption, and the π-π interactions and hydrophobic interactions. Therefore, due to the designable flexibility of CMPs, which make the CMPs-based novel materials are excepted to an excellent candidate for applications of oil/water separation and water purification.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2016
·
IF 5.886
Langjun Zhou,Yuling Hu,Gongke Li
Conjugated microporous polymers (CMPs), linked by a covalent bond to form an extension of the aromatic ring skeleton, are microporous materials characterized by a highly conjugated structure and high stability. The present study reported on a novel strategy for the synthesis of CMPs with built-in magnetic nanoparticles for excellent enrichment of trace hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) in human urine. We modified Fe3O4 nanoparticles with boronic acid groups and then reacted the nanoparticles with reactive monomers of polyphenylene conjugated microporous polymer (PP-CMP) to anchor the magnetic components in the PP-CMP framework. Chemical bonding between Fe3O4 nanoparticles and PP-CMP networks, together with equally firm covalent linkage and rigidity of the PP-CMP network, endows the magnetic PP-CMP with remarkable chemical stability and durability, even in harsh conditions. Magnetic PP-CMP has the characteristics of high conjugation ability, highly porous structure, and magnetism, which makes it an ideal magnetic adsorbent for trace analytes with aromatic conjugation structure. The adsorption mechanism of OH-PAHs on magnetic PP-CMP was investigated and demonstrated that hydrophobic interaction was important for the contribution of interaction between adsorbents and target analytes, together with the assistance of π–π stacking interaction. For the application, the magnetic PP-CMP was used for the enrichment of trace OH-PAHs in human urine of both smokers and nonsmokers in combination with high-performance liquid chromatography with fluorescence detection (HPLC-FLD). It showed good selectivity and excellent sensitivity to these OH-PAHs. Their detection limits were low and in the range of 0.01–0.08 μg·L–1. The OH-PAHs were detected with different amounts from 0.054 to 0.802 μg·L–1 in urine samples from smokers and nonsmokers. The recoveries were found to be 76.0%–107.8%. The results indicate that the magnetic PP-CMP offers an efficient enrichment method for trace OH-PAHs in human urine.
研究领域:
分析化学
·
环境科学
·
医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2021
·
IF 5.455
Zhentao Hu,Nan Lu,Fei Wang,Yingjiao Ma,Hanxue Sun,Zhaoqi Zhu,Weidong Liang,An Li
The exploitation of high-performance antibacterial materials is of great importance for maintain public health and sustainable development of modern society. Here, we describe a facile approach for the preparation of conjugated microporous polymer hollow spheres (CMP1-HSs and CMP2-HSs) by using SiO 2 nanoparticles as a template and 1,3,5-triethynybenzene and 3,7-dibromophenothiazin-5-ium, bromide for CMP2 and 1,3,5-triethynybenzene and 1,4-dibromobenzene for CMP1-HSs as building blocks via the Sonogashira-Hagihara cross-coupling reaction. The as-synthesized CMPs-HSs possess good thermal stability with a thermal decomposition temperature of up to 588 °C, high porosity (a BET specific surface area of approximately 556 m 2 g −1 ) and a unique hollow spherical morphology with inner diameter of ca. 380 nm. Benefit from their intrinsic lipophilicity and hydrophobicity , the CMPs-HSs could act as a kind of ‘micro-tank’ which enable to capture and absorption of organics from water. Interestingly, the CMPs-HSs also show an antibacterial property with bromide. To further improve their antibacterial performance, silver nanoparticles were doped onto the CMPs-HSs (abbreviated as CMPs@Ag-HSs). The as-resulted CMPs@Ag-HSs exhibit excellent antimicrobial activity both for gram-negative, e.g. Escherichia coli, The minimum inhibitory concentration (MIC) value of CMP1 is 15 μg mL −1 that is the growth of E. coli could be inhibited entirely after 3 h treatment. Taking advantages of their superior wettability , excellent absorption and separation ability, unique hollow spherical morphology makes much more accessible external surface area for doping Ag nanoparticles, such CMPs@Ag-HSs may hold great potentials as a kind of novel porous medium for organic pollution elimination, water treatment and antibacterial applications.
研究领域:
材料科学
·
环境科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2021
·
IF 9.811
Kai Li,Junyong Zhu,Decheng Liu,Yatao Zhang,Bart Van der Bruggen
Conjugated microporous polymers (CMPs) featuring a well-structured microporosity are desirable molecular sieving materials, but most are fabricated under harsh synthesis conditions (e.g., high temperature and pressure) and are insoluble, which is challenging for processing them into continuous membranes. Herein, in situ formation of imine-linked, 31-nm-thick CMP nanofilms supported on porous polymeric substrates via catalysis diffusion-controlled interfacial polymerization (IP) under mild conditions is reported. The diffusion of catalyst acetic acid (AcOH) from the water phase to the interface enables acceleration of the aldehyde-amine condensation from the oil phase and thus the formation of CMP nanofilms within 10 min. The micropore size and thickness of CMP membranes were feasibly regulated by rational utilization of molecular ligands and control of IP parameters. Importantly, introducing hydroxyl groups adjacent to aldehyde enlarges CMP pore apertures from 1.0 to 1.7 nm due to the reduced reactivity induced by steric hindrance and the formed intramolecular hydrogen bonds. The newly synthesized 2,5-dihydroxyterephthaldeyde–m-phenylenediamine membranes display an extraordinarily high water permeance (240.0 L m–2 h–1 bar–1) and an excellent brilliant blue R (825.9 Da) rejection (i.e., 98.3%). In addition, the CMP membranes achieve an unprecedented sieving capability for both dye/dye and dye/divalent salt mixtures. This catalysis diffusion-controlled, interface-confined polymerization means may enable the development of new coherent microporous organic polymer films with potential for water purification, adsorption, and gas purification.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）