Polymers
·
2019
·Vol. 11
·期 7
·1152
·
IF 3.164
Huiqin Zhang,Pan Liu,Zheng Chi,Xuegang Chen
Hydrophilic copolymers containing 2,2′:6′,2″-terpyridine moieties and acrylic acid (AA) units poly (acrylic acid-co-4-(2,2′:6′,2″-terpyridin-4′-yl)styrene) (P(AA-co-TPY)) were synthesized and characterized. Coordinated with different transition metal ions, the dilute aqueous solution of the copolymers exhibited red-shifted UV-vis absorption peaks of π-π* transition from 317 to 340 nm. Further, interacting with iron ions, the copolymer showed new absorption peaks at a longer wavelength region (570 nm) and the absorption intensity enhanced with increase of the ion concentration. When enough ions were added to coordinate with the 2,2′:6′,2″-terpyridine moieties, novel metallo-supramolecular hydrogels were obtained due to the formation of metal coordination bonds between polymer back bones and transition metal ions (Ni2+, Zn2+, Cd2+, Fe2+and Cu2+), which acted as self-assembly crosslinking structures. The mechanical strength and morphology of the resulting metallo-supramolecular hydrogels have been investigated.Keywords:terpyridine;hydrophilic polymer;metallo-supramolecular;hydrogels
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
Molbank
·
2023
·Vol. 2023
·期 2
·M1664
·
IF 0.6
Lingsen Li,Jingjing Wang,Tianhao Gong,Kunming Liu,Juanhua Li
In this short note, we elaborate on a synthetic method for a new terpyridine Schiff base-bearing vanillin motif. The structure of the product was confirmed via1H and13C-NMR spectroscopy and FT-IR spectroscopy. Due to the peculiar coordination nature and optical property of the synthesized compound, this work presents a promising colorimetric sensing molecular compound.Keywords:terpyridine derivatives;Schiff base;condensation
研究领域:
化学
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材料科学
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DOI
高影响因子
Journal of Energy Storage
·
2022
·
IF 8.907
Hongmei Xie,Juguo Dai,Lili Luo,Long Xia,Xiaohong Wang,Chunying Yang,Yiting Xu,Birong Zeng,Lizong Dai
Energy and environmental issues have been hot topics over the past few decades. As new energy storage conversion equipment, supercapacitor has been hindering due to their low energy density . Constructing asymmetric supercapacitors to boost energy density is considered as an effective approach. In this study, functional modification was combined with in-situ polymerization to prepare the reduced graphene oxide/polyaniline/terpyridine (RGPT) composites to capture metal ions and serve as cathode material of supercapacitor. When Cr 3+ ions are complexed with composite material, the electrochemical property of the resulting material is greatly improved. The RGPT-Cr composites display a high specific capacitance of 1499 F g −1 at 1 A g −1 with outstanding cycling stability in three-electrode systems. Asymmetric supercapacitor (ASC) devices assembled with the RGPT-Cr composites as positive electrodes present a superior energy density up to 117.5 Wh kg −1 at a power density of 915.0 W kg −1 and possess preeminent capacitance retention of 93.2% after 6000 cycles at 20 A g −1 . In addition, the theoretical calculations prove that Cr 3+ helps to enhance the surface-capacitive contribution of whole composites. This strategy has validated the fact that the incorporation of metal coordination bonds boosts the electron transfer efficiency and structural stability of the whole composite.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
INORGANICA CHIMICA ACTA
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2024
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IF 2.7
Shi-Jie Xian,Tao Sun,Yan Li,Kai Wang
Six ternary lanthanide complexes with different β-diketones as primary “antenna” ligand and 2,2’:6’,2’’-terpyridine as neutral ancillary ligand, namely [Ln(hfac) 3 (tpy)] [Ln(III) = Eu ( 1 ), Gd ( 2 ), Tb ( 3 ); hfac = hexafluoroacetylacetone; tpy = 2,2’:6’,2’’-terpyridine] and [Ln(btfa) 3 (tpy)] [Ln(III) = Eu ( 4 ), Gd ( 5 ), Tb ( 6 ); btfa = 4,4,4-trifluoro-1-phenyl-1,3-butanedione], were synthesized and characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, single crystal X-ray diffraction and powder X-ray diffraction. The three-dimensional Hirshfeld surface map and two-dimensional fingerprint analysis reveal that the substitution of hfac with btfa result in the decrease of the H···F/F···H and F···F interactions and the increase of the C···H/H···C and H···H interactions. Solid-state luminescence investigations indicate that the Eu(III) complexes ( 1 -Eu and 4 -Eu) and the Tb(III) complexes ( 3 -Tb and 6 -Tb ) display the characteristic lanthanide-centered luminescence upon UV excitations. 1 -Eu and 4 -Eu emit red light at CIE: 0.6827, 0.3172 and CIE: 0.6819, 0.3179 with the quantum yields (QY) of 78.70 % and 68.85 % and the lifetimes ( τ ) of 0.768 and 0.808 ms, respectively. 3-Tb and 6-Tb emit green light at CIE: 0.2677, 0.7221 and CIE: 0.2680, 0.7217 with the QY values of 7.56 % and 1.38 % and the τ values of 0.076 and 0.022 ms, respectively. For the Eu(III) complexes, the substitution of hfac by btfa makes the QY value lower from 78.70 % to 68.85 % and slightly prolong the τ value from 0.768 to 0.808 ms, while for the Tb(III) complexes, both of the QY and τ values decrease. The results suggest that the structures of the primary β-diketone ligands could affect the luminescence performances such as QY and τ values of the Eu(III) and Tb(III) complexes.
研究领域:
无机化学
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材料科学
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DOI
高影响因子
Materials Advances
·
2022
·Vol. 3
·期 20
·7569-7578
·
IF 0
Qian Zhao,Jing Wang
The sensitive detection of sulfonamide antibiotic (SA) residues is of great significance to ecosystems and public health. To overcome the defect of poor water dispersion stability and low sensitivity of SA detection systems, a terpyridine@Zn2+-modified mesoporous silica, denoted ATpy@Zn-SBA-15, was developed and applied as a highly sensitive and quickly responsive fluorescent sensor for the detection of SAs in tap water and milk. Terpyridine, with three pyridine groups, can form a stable complex with Zn2+. The Zn2+ in terpyridine@Zn2+ provides binding sites to recognize SAs such as sulfathiazole (STZ) by forming conjugates between ATpy@Zn-SBA-15 and STZ, thus facilitating energy transfer from the organic functional groups of ATpy@Zn-SBA-15 to STZ, resulting in efficient changes in fluorescence spectra. When the concentration of SAs such as STZ increased, the fluorescence emission intensity of ATpy@Zn-SBA-15 suspensions at 429 nm gradually decreased. ATpy@Zn-SBA-15 exhibited relatively low detection limits of 0.17, 0.63, 0.52, 0.57 and 0.54 μM for STZ, sulfamethizole, sulfachlorpyridazine, sulfamerazine and sulfamethoxypyridazine, respectively. Compared with the material without Zn2+, ATpy@Zn-SBA-15 displayed remarkably enhanced SA sensitivity, which demonstrated that introducing the Zn2+ sites played a crucial role for both specific recognition of SAs and fluorescence response signals. Prominently, this proposed strategy can be applied for detecting other antibiotics by varying the organic functional groups and metal sites.
研究领域:
分析化学
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环境科学
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生物医学
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产品关联
DOI
COLORATION TECHNOLOGY
·
2023
·Vol. 140
·期 2
·300-312
·
IF 1.8
Jianing Fan,Shouying Wu,Zixian Wang,Minglong Zheng,Miaomiao Zhang,Linping Zhang,Yi Zhong,Xiaofeng Sui,Hong Xu,Zhiping Mao
The discharge of coloured textile printing and dyeing wastewater causes environmental pollution. Disposing of wastewater efficiently, simply and with low consumption, is a problem that must be addressed. Herein, a catalytic method for rapid decolorisation of organic dyes was devised employing a terpyridine iron complex to activate oxidised permonosulphate. CI Acid Red 1 was used as the simulated pollutant, the influences of operating parameters on the fading effects of wastewater were explored. According to the results, the produced catalytic system exhibits a universal catalytic effect. Even when the dye concentration reaches 76.4 mg/L, the dyeing wastewater may be effectively decolorised. In addition, when anions (HCO 3 − , SO 4 2− , Cl − ) were present in the solution, the degradation effect of CI Acid Red 1 was still effective. Interestingly, active species such as sulphate radicals and singlet oxygen were detected in the catalytic degradation system by radical capture experiments. The removal rate of total organic carbon can achieve a percentage of 26.22% in 2 hours. This research provides a unique, enzyme-like catalytic system for the rapid breakdown of dye contaminants.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2023
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IF 3.8
Rui Shi,Pengcheng Hao,Zhongzhi Wang,Juan Zhang,Bo Li,Leijun Shen,Xin Qiao
In this work, we prepared a Carbazole-Benzene-Tripyridine ligand with a d -π-A structure and synthesized its corresponding Eu (III) and Tb (III) complexes. The structures of the complexes were analyzed by single crystal X-ray diffraction. It was surprisingly that the fluorescence emission intensity of the Eu(III) complex increases significantly once the solvent was added, indicating that the fluorescence could be activated by the solvent. However, it was confirmed that in the solid state, the complex molecules in the lattice were orderly arranged and there was a π-π stacking effect. The π-π stacking caused strong intermolecular interactions leading to emission quenching. The addition of solvent broke the π-π stacking and enhanced the fluorescence of the Eu(III) complex. The color of the fluorescence emission of the Eu(III) complex depended on the kind of added solvent. The results of nuclear magnetic resonance (NMR) and density functional theory (DFT) calculations suggested that the rotation of the C C single bond in the d -π-A structure ligand in different solvents caused a change in the spatial angle between the carbazole-benzene unit and the tripolypyridine unit in the ligand, thereby changing the excited state energy of the ligand. Hence, the varied emission colors of the complex reflect differences in the energy transfer efficiency of the ligand to rare earth ion. The solvent effect of the Eu(III) complex was then successfully applied in the rapid identification of specific alcohols.
研究领域:
化学
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材料科学
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2023
·
IF 2.8
Tang Mingqiang,Chen Weijie,Liu Zewei,Pang Jun,Li Chaoping,Liu Sijie,Tan Rong
Poor light absorption ability severely limit the photocatalytic efficiency of metal–organic frameworks (MOFs) for chemical transformations. Herein, we have integrated the zinc(terpyridine) complex as “molecular antennas” into backbone of MOFs, to harvest visible light for aerobic oxidative coupling of amines. Two photoactive MOFs of Zn-CTP [CTP = (4′-(4-carboxyl)-terpyridine] and Zn-TPBA {TPBA = 4-([2,2′:6′,2′′-terpyridin]-4'-yl)benzoic acid} were thus prepared by employing the terpyridine-containing aromatic carboxylate ligands of CTP and TPBA as the organic linkers, respectively, to coordinate with zinc nitrate under solvothermal condition. Characterization results suggested the successful chelation of terpyridine with zinc(II) ions, giving zinc(terpyridine)-containing MOFs with high crystallinity. The incorporated zinc(terpyridine) complexes indeed acted as the “molecular antennas” in MOF to harvest visible light. Furthermore, π-conjugated terpyridine in organic linkers favored the charge transfer, leading to efficient charge separation in MOFs. Both zinc(terpyridine)-containing MOFs thus demonstrated high activities in the visible light-driven oxidation of amines to imines in air at room temperature. Particularly, extended π-conjugated linker of TPBA could further enhance the delocalization of conjugated electrons and optimize the electronic band structure that in favour of photocatalytic activity. As a result, Zn-TPBA enables almost quantitative oxidative coupling of benzylamine under visible light irradiation in atmospheric air, which was even more efficient than other reported photocatalysts in pure oxygen atmosphere. The salient advantages, such as operational simplicity, environmentally friendly, energy efficient, and high efficiency, made such photocatalytic system highly promising and practical in industrial application. Graphical Abstract Zinc(terpyridine) complex acted as “light antennas” in MOFs, making oxidative coupling of amines highly efficient under visible light in air.
研究领域:
材料科学
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化学
·
催化
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光化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Bingtao Bao,Jianhua Wu,Hao Liu,Mingjin Xue,Jianmin He,Hanzhong Ren,Yiting Xu,Birong Zeng,Weiang Luo,Lizong Dai
Polyaniline (PANI) is considered as one of the most promising corrosion inhibitors because of its unique redox and environmental stability. Pyridine and its derivatives can chelate metal ions during corrosion, forming an inert protective layer on the metal surface to achieve the anticorrosion effect. Therefore, polyaniline is combined with pyridine together to achieve deep anticorrosion in this work. 4-((2,2′:6′,2″-terpyridin)-4′-yl)aniline (TPY) and 1,3,5-benzenetricarbonyl chloride (TMC) were applied to synthesize a novel corrosion inhibitor N1, N3, N5-tri (4-((2,2′: 6′, 2′-tri-pyridine)-4′-yl) phenyl) benzene-1,3,5-tri-formamide (TBT). Then, TBT was in situ loaded onto the PANI surface to obtain the composite TPANI. The TPANI was successfully dispersed in epoxy resin (EP) at various dosages to prepare composite coatings. Electrochemical impedance spectroscopy and salt fog tests were employed to evaluate the performance of the coatings. After experimentation, we discovered that when the TPANI content was 0.25 wt%, the impedance value remained stable at 5.83 × 10 9 Ω cm 2 after immersing the coatings in a 3.5 wt% NaCl solution for 28 days. In contrast, the EP coating exhibited a resistance decrease ranging from 9.56 × 10 9 to 7.8 × 10 8 Ω cm 2 within the same soaking time, decreasing by an order of magnitude, while the TPANI-0.25% coating still maintaining a high order of magnitude. These results indicated that the TPANI filler effectively preserved long-term stability and provided persistent protection against corrosion. The protective mechanism of TPANI composite coatings was further elucidated through detailed analysis. Overall, the incorporation of TPANI into the epoxy resin yielded promising results, demonstrating its potential as an effective corrosion inhibitor for protective coatings.
研究领域:
材料科学
·
防腐蚀工程
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产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2013
·
IF 1.363
Hongzhen XIE,Guanzhong LU
Five lanthanide complexes of Ln 2 (dpdc) 2 (tpy) 2 (NO 3 ) 2 (H 2 O) 2 [Ln=La ( 1 ), Ce ( 2 ), Pr ( 3 ), Sm ( 4 ), Gd ( 5 ), H 2 dpdc=2,2’-biphenyldicarboxylic acid and tpy=2,2′:6′,2″-terpyridine] were prepared at room temperature and characterized by X-ray diffraction, FT-IR and thermo-gravimetric analysis. The results showed that complexes 1–5 were isostructural and consisted of dinuclear units [Ln 2 (dpdc) 2 (tpy) 2 (NO 3 )(H 2 O) 2 ] bridged by two dpdc 2− ligands. The dinuclear units with strong intramolecular hydrogen bonds were assembled into 2D supramolecular layers by the weak π … π staking interactions between pyridine rings of tpy. The TG analysis showed that the complexes 1 – 5 behaved higher thermal stability with no mass loss at < 320 °C. The lanthanide contraction effect and the solid state luminescence properties of complexes 1 – 5 were also investigated. The luminescence emission spectra of complexes 1 – 5 exhibited ligands emission bands and complex 3 and 4 had no typical emission in the visible region.
研究领域:
化学
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材料科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 45
·24345-24352
·
IF 14.511
Shuo Xiang,Arshad Khan,Zeyan Zhou,Bingling He,Xin Wang,Binju Wang,Qunhong Weng
Green hydrogen is an ideal and zero-pollution fuel that can be obtained using solar and other renewable energies. The efficient photocatalytic production of hydrogen mainly relies on the development of high-performance photocatalysts. In this work, we report the synthesis and photocatalytic hydrogen evolution application of a 2D coordination nanosheet (CONASH) constructed from bis-terpyridine ligands (Tpy) and Zn ions, which revealed an optical bandgap of 1.70 eV and exhibited excellent photocatalytic hydrogen-production performances of 3.10 mmol h−1 g−1 and 11.84 mmol g−1 h−1 under N2 and CO2 atmospheres, respectively. Such high photocatalytic hydrogen evolution rates are among the top tier in noble metal-free coordination complexes, providing a new way for designing hydrogen evolution photocatalysts based on highly structure- and band-adjustable 2D CONASHs.
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
OPTICAL MATERIALS
·
2023
·
IF 3.9
Hua Ye,Denghui Liu,Fen Liu,Liangyuan Chen,Wei Hu,Yu Bai,Jiali Rao,Dehan Wu,Xinyi Cai,Shi-Jian Su
A series of light-emitting dendrimers T42Bn, T24Bn, T26Bn and T35Bn based on electron-donating units of the second-generation butyicarbazoles (G2Cz) as dendrons and electron-withdrawing core of tripyridylbenzene (TPB) were designed and synthesized. The desirable blue luminogens were obtained due to the rational molecular design based on the twisted skeleton of all the molecules despite the donors of G2Cz moieties connected to the central acceptors of TPB via a para-phenylene bridge. Their thermal, photophysical, density functional theory calculation and electrochemical properties were fully investigated. Thanks to the excellent thermal stability, film-forming ability as well as the favourable energy levels of the dendrimers, efficient solution-processed hybrid white organic light-emitting diodes (WOLEDs) were achieved by employing these blue dendrimers and the orange emitter of (acetylacetonato)-bis[2-(thieno [3,2-c]pyridin-4-yl)phenyl]iridium(III) (PO-01) as an emitting layer (EML). Among them, the device based on T42Bn exhibited the highest maximum current efficiency (CE max ) of 10.25 cd/A with a maximum external quantum efficiency (EQE max ) of 3.94% and Commission International de I'Eclairage (CIE) coordinates of (0.34, 0.39), benefiting from the largest ƞ PLQY and the highest electron transport capability of T42Bn and thus the enhancement of charge carrier balance in the device. In addition, the CIE coordinates of all the single-emitting-layer fluorescence/phosphorescence hybrid devices are very close to the benchmark white region of (0.33, 0.33). Our findings demonstrate the potential candidates of the solution-processable blue dendronized emitters for applications in full-color flat-panel displays and white lighting.
研究领域:
材料科学
·
光电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）