JOURNAL OF MOLECULAR STRUCTURE
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2022
·
IF 3.841
Yuqin Wei,Yan Chen,Rui Yuan,Zhaoli Xue,Long Zhao
Porphyrin-sensitized semiconductor particles can intensely absorb light in the visible wavelength range. Modification on molecular structure by either tuning the substituent species or elongating the distance between the second chromophore and porphyrin core may reduce interfacial electron-hole recombination and thus improving photocatalytic activity. Two zinc porphyrins are synthesized and doped on TiO 2 for photodegrading an organic pollutant AB1. Electronic structure of the molecules is studied by density functional theory calculations, showing more delocalized electron density on TPA-BiPh-ZnP than Cb-Ph-ZnP . Photo-electrochemical impedance measurements suggest greater electron-hole separation and interfacial charge transport efficiencies of TPA-BiPh-ZnP/TiO 2 than Cb-Ph-ZnP/TiO 2 . Both composites perform promising photodegradation activity of AB1, with superoxide radicals (•O 2− ) and holes (h + ) as the major reactive species at the reaction interfaces. Importantly, TPA-BiPh-ZnP/TiO 2 exhibits faster degradation kinetics than Cb-Ph-ZnP/TiO 2 , reaching a C/C 0 value of 10% within 60 min.
研究领域:
材料科学
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环境科学
·
化学
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 10
·2377
·
IF 4.2
Zhilei Wang,Zipeng Zhang,Chenyu Wu,Zikuan Wang,Wenjian Liu
The photocatalyst (PC) zinc tetraphenylporphyrin (ZnTPP) is highly efficient for photoinduced electron/energy transfer reversible addition-fragmentation chain transfer (PET-RAFT) polymerization. However, ZnTPP suffers from poor absorbance of orange light by the so-called Q-band of the absorption spectrum (maximum absorption wavelengthλmax= 600 nm, at which molar extinction coefficientεmax=1.0×104L/(mol·cm)), hindering photo-curing applications that entail long light penetration paths. Over the past decade, there has not been any competing candidate in terms of efficiency, despite a myriad of efforts in PC design. By theoretical evaluation, here we rationally introduce a peripheral benzo moiety on each of the pyrrole rings of ZnTPP, giving zinc tetraphenyl tetrabenzoporphyrin (ZnTPTBP). This modification not only enlarges the conjugation length of the system, but also alters thea1uoccupiedπmolecular orbital energy level and breaks the accidental degeneracy between thea1uanda2uorbitals, which is responsible for the low absorption intensity of the Q-band. As a consequence, not only is there a pronounced hyperchromic and bathochromic effect (λmax= 655 nm andεmax=5.2×104L/(mol·cm)) of the Q-band, but the hyperchromic effect is achieved without increasing the intensity of the less useful, low wavelength absorption peaks of the PC. Remarkably, this strong 655 nm absorption takes advantage of deep-red (650–700 nm) light, a major component of solar light exhibiting good atmosphere penetration, exploited by the natural PC chlorophyll a as well. Compared with ZnTPP, ZnTPTBP displayed a 49% increase in PET-RAFT polymerization rate with good control, marking a significant leap in the area of photo-controlled polymerization.
研究领域:
材料科学
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化学
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DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2017
·
IF 4.536
Samrat Devaramani,Xiaofang Ma,Shouting Zhang,Mahgoub Ibrahim Shinger,Dongdong Qin,Duoliang Shan,Xiaoquan Lu
Axial ligation property of metalloporphyrins has got vital importance in the architecture of donor–acceptor dyads, 3D cages and modular assemblies made up of porphyrins. Nitrogenous ligands have been extensively used in this regard. In this paper, we made a unique attempt to axially ligate thiol-appended molecule to tetraphenylporphyrinato zinc(II), (ZnTPP). Taking the advantage of photoexcitation of metalloporphyrins, axial ligation of 1-dodecanethiol (DDT) to ZnTPP in the presence of visible light was invented. This has been ascertained by recording the charge transfer between ZnTPP and DDT. Photoinduced axial ligation of DDT to ZnTPP under visible light was studied by varying the wavelength and intensity of the light source. The axial ligation reaction was found to be photoswitching and wavelength selective. The binding constant of the ZnTPP–DDT complex was found to be comparable with that of ligands bind to ZnTPP though nitrogen. The consequence of the axial ligation on the HOMO and LUMO and the photoinduced charge transfer kinetics of the planar chromophore, ZnTPP were studied. Scanning electrochemical microscope was used to extract the heterogeneous charge transfer constant values in the case of ZnTPP and ZnTPP–DDT at the film/electrolyte solution.
研究领域:
化学
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光化学
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材料科学
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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2024
·
IF 4
Wen-Yuan Zhang,Gui-Chen Li,Bo Wang,Yan Fan,Xue-Qin Sun,Yi-Xin Yang,Chun-Yan Zhang,Xiao-Xia Feng,Wei-Bing Xu,Jia-Cheng Liu
Porphyrins, as photosensitizers for photodynamic therapy, is used to treat various cancers. In this study, three different side-chain variants of thiophene-zinc porphyrins were synthesized (Zn-P1, Zn-P2, and Zn-P3). Among the synthesized compounds, Zn-P1 exhibited the highest activity and demonstrated superior singlet oxygen generation capability according to both density functional theory calculations and singlet oxygen generation experiments. Our cytotoxicity assays revealed that Zn-P1 exhibited remarkable phototoxicity along with a pronounced selectivity for HepG2 cells. This selectivity was confirmed by cell staining experiments, which showed obvious apoptotic processes. Further insight into this anticancer mechanism was provided by cell reactive oxygen species experiments, which explained the induction of cancer cell apoptosis. Light-activated production of reactive oxygen species by photosensitizers initiates the apoptotic cascade in cancer cells. This study highlights the utility of cationic porphyrin photosensitizer complexes in photodynamic therapy and provides new insights for the development of innovative photosensitizers in cancer treatment.
研究领域:
药理学
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肿瘤学
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计算化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Yulin Wang,Weitian Han,Yongbiao Hua,Jixuan Chen,Dongmei Liu,Jiaqiuzi Zhang,Jinting Chen,Libo Nie,Xiuzhen Qiu,Huishi Guo
In the present work, a novel zinc-porphyrin-based microporous organic networks (Zn-MONs) were synthesized via facile solvothermal for the detection of tetracyclines (TCs). Zn-MONs, with their well-designed network structure featuring a significant specific surface area and appropriately sized pores, effectively facilitated the enrichment of TCs, resulting in a notable enhancement in sensitivity. Also, in the presence of TCs, Zn-MONs with TCs induced emission of yellow-green fluorescence located at 522 nm due to aggregation. Under the optimal conditions (excitation wavelength of 370 nm, pH = 7.0 in the HEPES-NaOH buffer solution, 0.2 g·L -1 Zn-MONs, and reaction time of 10 min), the Zn-MONs sensing system exhibited good sensitivity with limits of detection (LOD) of 10.6 and 25.8 nmol·L -1 towards tetracycline (TC) and chlortetracycline (CTC), respectively. Moreover, Zn-MONs demonstrated robust selectivity towards TC and CTC, even in the presence of diverse interfering analytes (e.g., ions, antibiotics and proteins). In addition, the good spiked recoveries for TCs detection (96.35 ∼ 99.85 %/0.47 ∼ 2.48 % for TC and 87.20 ∼ 101.11 %/0.53 ∼ 2.70 % for CTC, respectively) indicated the great potential of Zn-MONs in real-world condition (tap water and lake water). Furthermore, the feasibility of test paper embedded with Zn-MONs for sensing TC was explored. The increase in TCs concentration deepened the yellow-green color of test paper. As such, the constructed test paper can semi-quantitatively detect TC and CTC in water samples. Meanwhile, Zn-MONs had good adsorption capacity for TC through monolayer adsorption with the experimental maximum adsorption capacity of 69.62 mg·g −1 . Zn-MONs had good reusability toward TC at least five adsorption–desorption consecutive cycles. The outcomes collectively showcase the successful fluorescence detection and removal of TCs using Zn-MONs, highlighting the broader potential of MONs in fluorescent sensor applications.
研究领域:
环境科学
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分析化学
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材料科学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 48
·2209743
·
IF 19.924
Yi-Xuan Li,Jing Li,Dunru Zhu,Ju-Zheng Wang,Guo-Fang Shu,Junji Li,Sheng-Li Zhang,Xue-Ji Zhang,Serge Cosnier,Hai-Bo Zeng,Dan Shan
High electrocatalytic activity with tunable luminescence is crucial for the development of electrochemiluminescence (ECL) luminophores. In this study, a porphyrin-based heterobimetallic 2D metal organic framework (MOF), [(ZnTCPP)Co 2 (MeIm)] (1), is successfully self-assembled from the zinc(II) tetrakis(4-carboxyphenyl)porphine (ZnTCPP) linker and cobalt(II) ions in the presence of 2-methylimidazole (MeIm) by a facile one-pot reaction in methanol at room temperature. On the basis of the experimental results and the theoretical calculations, the MOF 1 contains paddle–wheel [Co 2 (-CO 2 ) 4 ] secondary building units (SBUs) axially coordinated by a MeIm ligand, which is very beneficial to the electron transfer between the Co(II) ions and oxygen. Combining the photosensitizers ZnTCPP and the electroactive [Co 2 (-CO 2 ) 4 ] SBUs, the 2D MOF 1 possesses an excellent ECL performance, and can be used as a novel ECL probe for rapid nonamplified detection of the RdRp gene of SARS-CoV-2 with an extremely low limit of detection (≈30 aM).
研究领域:
材料科学
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分析化学
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病毒学
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DOI
PubMed
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 62
·35429-35436
·
IF 2.936
Shumei Tang,Yu Xu,Gehong Su,Jianjun Bao,Aimin Zhang
Stretchable and flexible photoelectric materials are highly desirable for the development of artificial intelligence products. However, it remains a challenge to fabricate a stable, processable, and cost-efficient material with both high photoelectric sensitivity and remarkable deformability. Herein, a new kind of photoelectric sensitive, highly stretchable and environmentally adaptive materials was developed through in situ synthesis and π–π conjugation design. Specifically, a photoelectric elastomer zinc porphyrin SEBS(Zn-PorSEBS) was synthesized by introducing porphyrin to SEBS chain via a one-pot method. Then, graphene/zinc porphyrin SEBS (G/Zn-PorSEBS) composites were obtained by combing the elastomer with graphene sheets through solution blending. Notably, the resultant flexible composites were capable of capturing light changes with illumination on or off, and the maximum photocurrent density reached 0.13 μA cm−2. Moreover, the photoelectric composites exhibited a dramatic elongation (more than 1000%) and an excellent tensile strength about 20 MPa. This proposed strategy represents a general approach to manufacture photoelectric and flexible materials.
研究领域:
材料科学
·
光电化学
·
纳米技术
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Zhenyang Song,Yuting Xu,Mengyuan Zhang,Wei Zhu,Xudong Yang,Di Hao,Qing Li
Hypothesis Hexavalent chromium, recognized as one of the most toxic heavy metals, demands the development of advanced materials capable of both adsorption and photocatalysis for effective Cr (VI) removal. Experiments This study successfully synthesized a two-dimensional zinc porphyrin covalent organic framework (ZnPor-COF) via a solvent-based method. Performance evaluations have demonstrated that the ZnPor-COF possesses outstanding capabilities for the adsorptive and/or photocatalytic elimination of Cr (VI). Particularly noteworthy is the observation that when adsorption and photocatalysis are coupled, the ZnPor-COF attains an exceptional 99.7 % removal rate for a Cr (VI) concentration of 30 mg/L within just 60 min, with minimal susceptibility to coexisting ions. After five consecutive cycles, the material sustains a removal efficiency of 90 %, indicative of its robust cyclability. Findings Theoretical calculations, as well as experimental validations, have indicated that the integration of Zn ions into the porphyrin COF not only results in an expanded specific surface area and an increased count of adsorption sites but also significantly improves the COF’s photosensitivity and the capability for charge carrier separation. Furthermore, the core of the synergistic effect between adsorption and photocatalysis lies in the ability of photocatalysis to substantially augment the adsorption process.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Meng-yan Chai,Thayalan Rajeshkumar,Hui Su,Fu-jie Zhao,Zhi Wang,Wei-ping Yin,Song Jiang,Guo-xing Liu,Li-jie Liu,Xin Zheng,Li-xia Xie,Sheng-qiang Guo,Yu-qiang Xiang,Laurent Maron,Cao-yuan Niu
The poor aqueous solubility of porphyrins and metalloporphyrins has long impeded their applications in biological systems. In this study, we report the synthesis of a novel porphyrin derivative—ZnTSPP—achieved by introducing four sulfonic acid groups onto a single porphyrin molecule. The photophysical properties were comprehensively characterized via UV–Vis absorption and fluorescence emission spectroscopy in deionized water, phosphate-buffered saline (PBS), and fetal bovine serum (FBS). ZnTSPP exhibits intense absorption in both the Soret and Q bands and displays a reversible pH response. Density Functional Theory (DFT) calculations further corroborate the pH-dependent formation of J- and H-aggregates. Additionally, cellular imaging studies performed on pig kidney epithelial cells (LLC-PK1) demonstrate that ZnTSPP is not only pH-responsive but also an efficient singlet oxygen generator. These attributes position ZnTSPP as a promising agent for biomedical imaging and photodynamic therapy.
研究领域:
生物化学
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分子生物学
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医学影像学
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DOI
高影响因子
Journal of Analytical Methods in Chemistry
·
2025
·Vol. 2025
·期 1
·9981628
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IF 2.2
Linlin Yin,Yuyu Du,Miaohua Ge,Xiang Zhang,Xinyi Du,Xiaoqiong Wu
Dopamine (DA) is a catecholamine neurotransmitter secreted by the human adrenal medulla and is related to many medical diseases. The rapid and sensitive detection of DA levels in physiological media is attracting attention. This paper has developed a fluorescence paper-based sensor using CdTe quantum dots (QDs)-rod nanozinc 5, 10, 15, 20-tetra (4-pyridyl)−21H-23H-porphine (nanoZnTPyP) for sensitive and visual detection of DA. After adding DA, the original quenching fluorescence of the CdTe QDs-rod nanoZnTPyP sensor was effectively restored. The detection mechanism may be that the oxidation of DA to the alkaline CdTe QDs-rod nanoZnTPyP solution produced DA-quinine, and the recovery of fluorescence was caused by the electronic effect of DA-quinine and rod-shaped nanoZnTPyP. The detection range is 0.5∼10 nmol/L, and the limit of detection (LOD) is 0.38 nmol/L (S/N = 3). The sensor system was used on paper device to detect significant changes in the fluorescent color of DA at different concentrations. In addition, this method has been successfully used for the determination of DA in human plasma. The sensor system is simple, easy to operate, and has high selectivity for possible DA interfering substances, which provided new ideas for detecting DA and Parkinson’s disease, Alzheimer’s disease, and other DA-related diseases.
研究领域:
生物化学
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医学检测
·
材料科学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Yi-Xuan Li,Junji Li,Hai-Bo Zeng,Xue-Ji Zhang,Serge Cosnier,Dan Shan
Constructing robust and efficient luminophores is of significant importance in the development of electrochemiluminescence (ECL) amplification strategies. Inspired by the resonance energy transfer in natural light-harvesting systems, we propose a novel ECL amplification system based on ECL resonance energy transfer (ECL-RET), which integrates two luminophores, benzimidazole (BIM) and zinc(II) tetrakis(4-carboxyphenyl)porphine (ZnTCPP), into one framework. Through disassembling and reconstruction processes, numerous BIM surround ZnTCPP in the constructed ZIF-9-ZnTCPP. Combined with the overlapped spectra between the emission of BIM and the absorption of ZnTCPP, the energy of multiple BIM (donor) can be concentrated to a single ZnTCPP (acceptor) to amplify the ECL emission of the acceptor. This work provides a convenient way to design an efficient ECL-RET system, which initiates a brand-new chapter in the development of ECL amplification strategies.
研究领域:
材料科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Luyue Chang,Yehanrui Chen,Zexuan Meng,Zengtao Yang,Junchuan Qin,Jinyu Zhou,Chenglin Dai,Xinyan Ji,Tianqing Qin,Xiaoyun Dou,Shu Zhu,Guangchao Zang
In this study, the zeolitic imidazolate framework (ZIF-8) and glutathione silver nanoclusters (GSH-AgNCs) were assembled by the in situ synthesis method to form nanomaterials (GSH-AgNCs-ZIF-8). Meanwhile, a luminescent functional assembly of nanocomposites with adjustable potentials and luminescence enhancement was gained through innovative mixing of the luminophores tetracarboxyphenyl zinc porphyrin (TCPP-Zn) and GSH-AgNCs-ZIF-8. Composition and morphology of the materials were studied by electrochemistry and spectroscopy techniques. The blended material was used as high-efficiency luminophore to build the electrochemiluminescence (ECL) sensing system for iodide ion (I–) detection whose ECL mechanism has also been studied in depth. Under optimization conditions, ECL sensors showed excellent responses to I– in the linear range from 10 pM to 10 μM. This detection method showed selectivity, stability, and sensitivity. Moreover, it achieved relatively satisfying results to iodide ion detection in cola, milk, nori, and urine samples. This research not only develops and applies functional nanomaterials, but also establishes an ECL sensor system and provides ideas for the detection of micromolecules in food and clinical testing.
研究领域:
材料科学
·
分析化学
·
生物医学
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产品关联
DOI
高影响因子
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