PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2014
·Vol. 16
·期 48
·26917-26928
·
IF 4.198
Mingguang Li,Jiangang Liu,Xinxiu Cao,Ke Zhou,Qiaoqiao Zhao,Xinhong Yu,Rubo Xing,Yanchun Han
Herein, balanced intermixed and pure crystalline phases in N,N′-bis(1-ethylpropyl)-perylene-3,4,9,10-tetracarboxylic diimide (EP-PDI)-based non-fullerene organic solar cells (OSCs) were achieved via selective solvent additives (SAs). Poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7) and 7,7′-(4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl)bis(6-fluoro-4-(5′-hexyl-[2,2′-bithiophen]-5-yl)benzo[c][1,2,5]thiadiazole) (F-DTS) possessing different compatibilities with EP-PDI were selected as model systems to investigate the guideline of SAs selection for different non-fullerene-based systems. According to the solubility parameter difference (Δδ) between EP-PDI and SAs, five different SAs were divided into two types: (I) strong intermolecular interactions with EP-PDI molecules (with Δδ values less than 5 MPa1/2), (II) weak intermolecular interactions with EP-PDI molecules (with large Δδ values). For PTB7:EP-PDI system with large and obvious phase separation, the introduction of type (II) SAs provided extra interactions with EP-PDI molecules, thus effectively reducing EP-PDI aggregate domains and increasing intermixed fractions. The incorporation of type (II) SAs resulted in a greater yield of dissociated polarons, and the final device efficiency increased from 0.02% to 1.65%. On the contrary, for finely mixed F-DTS:EP-PDI systems, type (I) SAs were considerably more effective because of the fact that the required pure crystalline phases were readily induced by the unfavorable interactions. The charge transport pathways optimized by type (I) SAs improved device efficiency from 0.18% to 2.82%. Hence, by processing selective SAs, the fraction of intermixed and pure crystalline phases for PDI-based non-fullerene OSCs can be well regulated; therefore, the final performance for both systems can be significantly improved.
研究领域:
材料科学
·
有机电子学
·
太阳能
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DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 36
·12763-12778
·
IF 4
Qi Wen,Di Li,Chunyan Gao,Yuhang Xue,Lei Wu,Fang Song,Jun Zhou
In this paper, ultra-thin nanofiber PDI was obtained by self-assembly dispersion of commercial PDINH. A novel Co/Ni-MOF-74@PDI Z-scheme heterojunction photocatalyst material was constructed by a simple solvothermal method. XRD, SEM, TEM, FT-IR and other characterization techniques proved the successful preparation of the Co/Ni-MOF-74@PDI Z-scheme heterojunction photocatalyst material. By degrading chlortetracycline hydrochloride, it was found that the photocatalytic activity of Co/Ni-MOF-74@PDI was much higher than that of pure Co/Ni-MOF-74 and PDI. Subsequently, Co/Ni-MOF-74@PDI was used to activate H2O2 to further improve the degradation efficiency of chlortetracycline hydrochloride. It was found that the photocatalytic performance was greatly improved after the addition of 19.6 mM H2O2 to the system, and the degradation rate of chlortetracycline hydrochloride was 87% within 90 min. The electron transfer pathway and H2O2 activation mechanism of the Co/Ni-MOF-74@PDI composite photocatalyst were proved by free radical quenching experiments, electron paramagnetic resonance analysis and X-ray electron spectroscopy. Finally, the easy exfoliation point and degradation pathway of chlortetracycline hydrochloride were studied using density functional theory, UPLC-MS and toxicity evaluation software. It was found that the main active substances were h+, ˙O2, 1O2 and ˙OH, and the toxicity of chlortetracycline hydrochloride and its intermediates was evaluated.
研究领域:
材料科学
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环境科学
·
光化学
·
催化
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 17
·4196
·
IF 4.2
Yongzhang Xu,Xingrui Luo,Fulin Wang,Wentao Xiang,Chensheng Zhou,Weiya Huang,Kangqiang Lu,Shaoyu Li,Man Zhou,Kai Yang
The development of efficient and environmentally friendly photocatalysts is crucial for addressing global energy and environmental challenges. Perylene diimide, an organic supramolecular material, holds great potential for applications in mineralized phenol. In this study, through the integration of different mass ratios of unmodified perylenimide (PDI-NH) into the self-assembly of amino acid-substituted perylenimide (PDI-COOH), a novel supramolecular organic heterojunction (PDICOOH/PDINH) was fabricated. The ensuing investigation focuses on its visible-light mineralized phenol properties. The results show that the optimal performance is observed with a composite mass fraction of 10%, leading to complete mineralization of 5 mg/L phenol within 5 h. The reaction exhibits one-stage kinetics with rate constants 13.80 and 1.30 times higher than those of PDI-NH and PDI-COOH, respectively. SEM and TEM reveal a heterogeneous interface between PDI-NH and PDI-COOH. Photoelectrochemical and Kelvin probe characterization confirm the generation of a built-in electric field at the interface, which is 1.73 times stronger than that of PDI-COOH. The introduction of PDI-NH promotes π-π stacking of PDI-COOH, while the built-in electric field facilitates efficient charge transfer at the interface, thereby enhancing phenol decomposition. The finding demonstrates that supramolecular heterojunctions have great potential as highly effective photocatalysts for environmental remediation applications.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Xiaofeng Jiang,Chao Wang,Gang Li,Yunhua Yu,Xiaoping Yang
Π-conjugate perylene diimide (PDI)/graphene (GN)/PDI interphase was designed and constructed on pitch-based carbon fiber (PCF) surface by multi-layer assembly, and the interfacial and thermal conductive performances of PCF/Epoxy (EP) composites with PDI, PDI/GN and PDI/GN/PDI interphase were investigated. Flat nanoscale structures with fragmented and wrinkled GN, PDI nanowires were respectively observed on PCF-GN, PCF-PDI/GN and PCF-PDI surface, while three-dimensional oblique cicada-wing nanostructure of three-layer interphase was constructed on PCF-PDI/GN/PDI surface due to the re-assembly of PDI under confinement constraint of GN substrate. Interlayer shear strength and transverse fiber bundle tensile strength of PCF-PDI/GN/PDI/EP composite were 28.4 %, 9.36 %, 12.0 % and 246 %, 85.8 %, 116 % higher than those of PCF-GN/EP, PCF-PDI/GN/EP and PCF-PDI/EP composites, which were attributed to the improvement of interface adhesion and the effectively buffer stress transfer between carbon fiber and resin matrix by introducing three-layer PDI/GN/PDI interphase. Additionally, PCF-PDI/GN/PDI/EP composites showed the highest heat conduction and thermal conductivity , ascribing to the construction of extra conductive paths and the weakening of phonons scattering from three-dimensional (3D) structure of PDI/GN/PDI interphase, which realized the formation of structure-function integration interphase of pitch-based carbon fiber composites .
研究领域:
材料科学
·
纳米技术
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产品关联
DOI
高影响因子
POLYMER
·
2024
·
IF 4.1
Jincheng Sui,Xiaoyu Miao,Xin Cao,Qiuyu Ding,Longqiang Xiao,Linxi Hou
The polymer dispersity index (PDI) is a vital metric for characterizing molecular weight distribution, significantly influencing polymer material performance. However, achieving precise control over PDI in polymer synthesis remains a substantial challenge. In this study, we introduce an approach for modifying the PDI of poly(methyl acrylate) (PMA) in switchable reversible addition-fragmentation chain transfer radical polymerizations (RAFT). The devised strategy involves the utilization of photoresponsive hexaarylbiimidazole (HABI) as a mediator, coupled with temporal programming, to cyclically deactivate and reactivate propagating radicals at distinct stages throughout the polymerization process. The precise timing of the light stimulus is facilitated through computer-controlled single-chip microcomputer technology, ensuring automatic modulation of the optical state and mitigating operational inaccuracies. By manipulating external light conditions, the PDI of PMAs can be systematically adjusted within the range of 1.80–2.59. Validation through successful chain-extension experiments and analysis via MALDI-TOF MS confirm the preservation of good chain-end fidelity across PMAs with varying PDIs fabricated through this methodology.
研究领域:
高分子化学
·
材料科学
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DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Yijian Zhao,Tianyue Liu,Jinghui Gao,Qiaojuan Zhang,Mengyu Liao,He Cheng,Jingsheng Tian,Zhiyi Yao
Aflatoxin B1 (AFB1) is a kind of potently carcinogenic fungal metabolite in food threatening human health, and it is crucial and challenging to develop advanced nonimmune approaches for AFB1 determination. Addressing this challenge, we successfully constructed a nanoassembly (PdE-PDI/SDS) by noncovalently coupling a cationic perylene diimide derivative (PdE-PDI) and sodium dodecyl sulfate (SDS), exhibiting high-density charges and a specific surface area for rapid sensing of AFB1. The large electronic conjugate structure and rigid plane of PdE-PDI enable it to form more stable σ–π, π–π coordination, and hydrogen bonds with AFB1. Additionally, the introduction of SDS significantly amplifies noncovalent interactions and enhances the quenching efficiency of PdE-PDI toward AFB1. The proposed PdE-PDI/SDS exhibited excellent specificity to AFB1 and showed dosage-sensitive detection with detection limit as low as 0.74 ng mL–1. Finally, the PdE-PDI/SDS was successfully applied in cereal samples with good recoveries from 94.61 to 109.92%. To our knowledge, this is the first time a fluorescent strategy from the point of self-assembly for AFB1 determination is reported, which holds great promise for wide applications of perylene diimide derivative in food safety.
研究领域:
食品安全
·
分析化学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Chaoran Yu,Yao Shen,Ce Bian,Miao Liu,Michael D. Weir,Hockin H. K. Xu,Zhiyi Yao,Yuxing Bai,Ning Zhang
Enamel demineralization is a common complication of orthodontic treatment. Studies related to enamel demineralization are usually conducted in the laboratory using in vitro models. Detection technology relies on large instruments, which are not conducive to its popularization and promotion. We designed a fluorescence sensing system using a complex formed by 3,4,9,10-tetra-(4-trimethylaminohexyloxy-carbonyl)-perylene (PDI-HTMA) and casein phospho-peptides (CPPs) that can rapidly detect calcium ions in enamel. In this study, we investigated the feasibility of using PDI-HTMA/CPPs as probes for detecting enamel demineralization. We used Ca 2+ from enamel demineralization as the detection target for the fluorescent probe and verified its stability, specificity, and linear range. This method exhibits strong linear relationships in the Ca 2+ concentration range of 30–500 μM, with a limit of detection of 3.89 μM. The PDI-HTMA/CPPs were applied to human enamel specimens. We compared the detection results with those of existing enamel demineralization evaluation methods, and the results showed a trend consistent with that of ICDAS grading and laser fluorescence caries detection. This fluorescent probe assay is expected to be applied for the early detection of enamel demineralization, which has strong application advantages. To the best of our knowledge, this is the first fluorescent probe assay applied for the in vitro detection of enamel demineralization.
研究领域:
口腔医学
·
材料科学
·
生物化学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Wenting Li,Hanjie Zhang,Sijie Huang,Jingyi Xu,Liping Liu,Junshan Li,Jianfang Jing,Yongfa Zhu
The efficient activation of peroxydisulfate (PDS) for wastewater treatment remains a great challenge. Photocatalysis, which generates highly-reactive electrons and holes, shows great potential in activating PDS for effective degradation and deep mineralization. Herein, an electron-enriched PDI-SiO 2 photocatalyst was synthesized by covalently linking 3,4,9,10-perylene tetracarboxylic dianhydride (PTCDA) onto silicon dioxide (SiO 2 ) to form π-π stacked supramolecular PDI layers for efficient PDS activation. The highly dispersed PDI generates electron-enriched PDI· - under visible light, promoting the rapid activation of PDS for bisphenol A (BPA) degradation. The PDI-SiO 2 activated PDS system realized a high BPA degradation rate of 0.100 min −1 and a remarkable mineralization rate of 81%. Moreover, the charge separation efficiency is significantly improved since the electrons of PDI· - are captured by PDS, boosting oxidative degradation and improving the mineralization efficiency. This work developed a novel PDS activation strategy by constructing electron-enriched photocatalyst, and revealed the mechanism of photocatalytic activation and deep mineralization.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Meiyi Liu,Weilian Zheng,Yi Yang,Ge Shi,Yining Li,Shuai Zhou,Yijian Zhao,Zhiyi Yao
2,4,6-trinitrophenol (TNP) is an environmentally deleterious substance with high toxicity and explosibility. It is of great significance for environmental protection and public health to establish a rapidly on-site monitoring method for perilous TNP. Current methods for detecting TNP mainly rely on traditional laboratory analysis lacking rapid detection through intelligent modes. Herein, we construct a smartphone recognition based fluorescence sensing system via the supramolecular assembly of a perylene probe to quantify TNP. The sensing platform consists of a fluorescent probe based on quaternary ammonium functionalized perylene (PDI-BTMA), as the TNP-response recognition element, and smartphones as optical signals receptors bringing simpleness, celerity, and portability for TNP monitoring. The sensor reveals dual output signals of color and fluorescence in response to TNP. The results show that the optical responses of PDI-BTMA can be attributed to the formation of the supramolecular complex (PDI-BTMA/TNP) via non-covalent interactions including static electricity, hydrophobic interaction, charge transfer, and π-π stacking. It shows a wide linear range for TNP of 200–1200 nM with a detection limit of 9 nM. In addition, we successfully made portable PDI-BTMA fluorescence paper. The RGB value of fluorescence color was also collected by using the smartphone-assisted sensing platform, and the G/B channel values show a linear relationship with TNP concentration in 0.1–50 μM, with the lowest detection concentration of 48.4 nM. Additionally, it could be successfully utilized for quantitative TNP monitoring in environmental water and soil samples, which achieved a greater recovery rate in the range of 99–110%. This research integrating the PDI-BTMA probe with a smartphone firstly presents a new strategy for real-time and on-site monitoring of TNP in the environment.
研究领域:
环境科学
·
分析化学
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DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Li Jiao Liang,Qiang Wang,Yanxiang Wu,Tongde Rao,Xuanping Tan,Kezhong Liang,Yuwen Zhao
A novel fluorescent turn-on strategy based on perylene probe (PDI) and arginine functionalized gold nanoparticles (arg-AuNPs) for the sensing of mercury ions (Hg2+) has been developed. Due to the strong electrostatic and hydrophobic interactions as well as strong π-π stacking effect, the PDI probe could be adsorbed onto the surface of the nanoparticles, inducing the aggregation of the arg-AuNPs. Consequently, fluorescence peaks of PDI at 550 and 591 nm were quenched by arg-AuNPs through energy transfer (ET) process, which could be enhanced upon the addition of Hg2+. The presence of Hg2+ could prevent the ET process and thus recovered the fluorescence of PDI. A turn-on fluorescence signal was therefore detected. Our assay method shows very high sensitivity with a limit of detection of 0.6 nM, and remarkable selectivity against the common interference metal ions. This sensing method has also been successfully used for real sample analysis. The “off-on” fluorescent sensing method is fairly simple, fast, and inexpensive, and the fluorescence quenching mechanism of PDI induced by arg-AuNPs was expected to be utilized for more target sensing applications.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 20
·6813-6822
·
IF 4
Ruowen Liang,Shihui Wang,Yuzhou Xia,Ling Wu,Renkun Huang,Zhoujun He
Designing frustrated Lewis pair (FLP)-structured photocatalysts is a new challenge in catalysis. In particular, the relationship between the active sites and photocatalytic charge transport mechanism over FLP-structured photocatalysts is still ill-defined. In this study, a novel perylene-3,4,9,10-tetracarboxylic diimide/UiO-66(Ti/Zr)–NH2 (denoted as PDI/TUZr) photocatalyst is successfully constructed using an ammoniation process. The PDI/TUZr heterojunction is equipped with a unique “Zr/Ti SBUs-ligand-PDI” FLP structure and exhibits remarkable catalytic FLP properties. In this “Zr/Ti SBUs-ligand-PDI” structure, the Zr/Ti bimetal centers and PDI serve as Lewis acid and base sites, respectively, and the C–N chemical bond provides a channel for electron transmission, and a bimetallic system facilitates electron transfer from excited ligand to Zr/Ti-SBUs nodes. These superior microstructural designs cooperate to promote substrate activation for photocatalytic antibacterial reactions. Accordingly, 2.2-fold enhancement is achieved in visible photocatalytic antibacterial activity on Staphylococcus aureus for 4%PDI/0.2TUZr composite compared with unadorned UZr. This study provides insights into the formation and carrier transfer behaviors of solid FLP on MOFs and illustrates a rational strategy for the construction of highly efficient photocatalysts.
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Pingping Lu,Qiuyi Ji,Xiaoqian Ye,Guanshun Wang,Yangbo Cheng,Wendi Zhou,Zhe Xu,Gancheng Zuo,Xin Jin,Guoyang Zhang,Limin Zhang,Huan He
The practical application of perylene diimide (PDI) supramolecules is significantly hampered by their structural instability, which manifests as dissociation under alkaline conditions and deterioration during cyclic reactions. A thiourea-functionalized perylene diimide polymer with a reinforced π-conjugated framework (T-PDI) was synthesized for visible-light-driven (Vis) peroxymonosulfate (PMS) activation. The enhanced π-conjugation, synergizing with sulfur doping, endowed T-PDI with superior visible-light absorption and charge separation efficiency compared to urea-functionalized PDI (U-PDI). Experimental and theoretical analyses revealed that the robust π-conjugated network facilitated strong π-π stacking and directed spatial separation of electron-hole pairs, effectively suppressing recombination. Consequently, the T-PDI/PMS/Vis system achieved complete degradation of bisphenol A within 17.5 min ( k = 0.197 min −1 ), 1.5-times faster than the U-PDI/PMS/Vis system ( k = 0.134 min −1 ). The system also demonstrated excellent stability over multiple cycles, broad pH adaptability, and strong resistance to common water matrix interferents. This work highlights the critical role of π-conjugation engineering in developing high-performance, metal-free polymer photocatalysts for advanced oxidation processes.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）