Journal of The Chinese Chemical Society最新文献

{"title":"RAFT copolymerization of methyl methacrylate and di(ethylene glycol) methyl ether methacrylate in a hexylpyridinium ionic liquid","authors":"Ludhovik Luiz Madrid,&nbsp;Ser John Lynon Perez,&nbsp;Susan Arco","doi":"10.1002/jccs.202400197","DOIUrl":"10.1002/jccs.202400197","url":null,"abstract":"<p>Smart polymers undergo significant physical or chemical changes in response to stimuli like temperature and pH. Achieving a narrow molecular weight distribution is crucial for their sensitivity. Reversible addition–fragmentation chain transfer (RAFT) in ionic liquids is an effective method for synthesizing such polymers due to its favorable kinetics and environmental benefits. Most studies use imidazolium ionic liquids, while pyridinium ionic liquids are less common despite their easy synthesis. This study reports the first successful RAFT copolymerization of di(ethylene glycol) methyl ether methacrylate (DEGMEMA) and methyl methacrylate in <i>N</i>-hexylpyridinium hexafluorophosphate ([HPY][PF₆]). Both linear and hyperbranched copolymers (<i>M</i>_<i>n</i> &gt; 25,000) with narrow molecular weight distribution were synthesized, showing observable temperature responses and biocompatibility. The linear copolymers had a desirable dispersity (<i>Ð</i>) of less than 1.10, while the hyperbranched copolymer had a <i>Ð</i> of 2.034. The lower critical solution temperatures (LCSTs) of the copolymers were close to or below the LCST of PDEGMEMA (26°C). This study indicates that pyridinium ionic liquids can be explored as a suitable solvent for synthesizing methacrylate-based smart polymers.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1172-1185"},"PeriodicalIF":1.6,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141920524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unlocking the potential of carbon quantum dots: Versatile photocatalysts for methylene blue degradation—A comprehensive review of synthesis, catalytic mechanisms, and environmental applications","authors":"Farhad Ali,&nbsp;Lyn Marie De Juan-Corpuz,&nbsp;Ryan D. Corpuz","doi":"10.1002/jccs.202400112","DOIUrl":"10.1002/jccs.202400112","url":null,"abstract":"<p>Carbon Quantum Dots (CQDs) are nanoscale carbon-based particles with unique quantum properties. Because of their customizable size, optical properties, and surface functions, CQDs are frequently used in a wide range of applications. The present thorough analysis delves into the crucial function of CQDs in the photocatalytic breakdown of Methylene Blue (MB), providing valuable perspectives on their production, attributes, and catalytic processes. The effects of pH, wavelength, intensity, and other variables on the effectiveness of MB degradation are covered in detail. An analytical review of the kinetic models used to estimate the deterioration process is given. For improved stability and recyclability, the synergistic effects of CQD-based composites and developments in catalyst immobilization techniques are examined. Prospects for the future center on reactor designs, integration into large-scale water treatment systems, and optimization of CQD features. The research highlights the revolutionary potential of CQDs in transforming wastewater treatment and advancing environmentally sound solutions.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1154-1171"},"PeriodicalIF":1.6,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141922651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and development of an azo dye-based ultra-sensitive chemosensor for the ubiquitous organic anion in aqueous solutions","authors":"Hossein Tavallali,&nbsp;Mastaneh Ostovar,&nbsp;Abolfath Parhami,&nbsp;Mohammad Ali Karimi","doi":"10.1002/jccs.202400073","DOIUrl":"10.1002/jccs.202400073","url":null,"abstract":"<p>Oxalate plays a crucial role in various biological and industrial applications. Its involvement in diseases, drug- and toxin-induced disorders, and disruption of industrial processes makes it a high-priority chemical for the development of more precise, selective, and straightforward analytical methods. Herein, an innovative and efficient strategy for sequentially measuring Cu²⁺ and oxalate ions is reported. During an indicator displacement process, where Cu²⁺ and azo dye, ArsenazoIII (AAIII), are used as receiver and indicator, respectively, oxalate (C₂O₄²⁻) is measured by a colorimetric method. Proof of concept results from UV–visible spectroscopy, naked eye, and signal reset of the indicator revealed a more robust interaction of the Cu²⁺ receptor with C₂O₄²⁻ than the AAIII indicator with high selectivity, good sensitivity, and lower detection limit(4.01 × 10⁻⁸ and 3.04 × 10⁻⁹mol L⁻¹, for Cu²⁺ and C₂O₄²⁻, respectively). The results of measuring C₂O₄²⁻ in actual samples (urine, mushrooms, and spinach) showed the applicability of the existing method. Most importantly, the colorimetric system based on molecular exchange in the indicator dislocation proceeding can serve as a colorimetric INHIBIT logic-gate. It works like a molecular keypad lock system that can be controlled by two users with two different sets of chemical passwords (inputs) that can be identified through optical paths.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1230-1245"},"PeriodicalIF":1.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of linear alkyl benzene sulfonates in vegetable by modified QuEChERS coupled to liquid chromatography-tandem mass spectrometry","authors":"Sarawinda Hutagalung,&nbsp;Yohanes Ariesto,&nbsp;Yen-Hsien Li,&nbsp;Sio-Leng Wong,&nbsp;Chung-Yu Chen,&nbsp;Maw-Rong Lee","doi":"10.1002/jccs.202400176","DOIUrl":"10.1002/jccs.202400176","url":null,"abstract":"<p>Linear alkyl benzene sulfonates (LASs) with alkyl chains from C₁₀ to C₁₄ are the most commonly used anionic surfactants in household laundry. However, LAS toxicity toward agricultural soil further could be formed at a risk for fruits and vegetables grown on the land, so that to develop a sensitive and precise analytical technique for determination of trace residual sulfonates in vegetables is very important for health. This study developed a QuEChERS extraction coupled to liquid chromatography–tandem mass spectrometry (LC–MS/MS) method for analyzing LASs in vegetables and fruits. The best results were obtained using acetonitrile as the extraction solvent combined with 25 mg primary secondary amine and 25 mg graphitized carbon black as sorbents. The linearity ranged between 1 and 250 ng/mL as well as limit of quantification (LOQ) was obtained in the range of 0.01–0.23 ng/mL of the proposed analytical method. The proposed method was utilized to detect the real spinach samples and water spinach planted with LASs-spiked water, and the results showed the trace LASs were detected with concentration between 1.8 and 29.1 ng/g. In this study, a thorough optimization and validation of different amount of sorbent cleanup efficiency approaches was performed for the first time for the analysis of LAS.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1246-1253"},"PeriodicalIF":1.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review on photocatalytic degradation of aromatic organoarsenic compounds in aqueous environment using nanomaterials","authors":"Stephen Sunday Emmanuel,&nbsp;Ademidun Adeola Adesibikan","doi":"10.1002/jccs.202400209","DOIUrl":"10.1002/jccs.202400209","url":null,"abstract":"<p>Aromatic organoarsenic compounds (AOCs) have proven to be both a boon and a curse by boosting profit maximization in livestock production and at the same time contributing to the pollution of water bodies, the chief cornerstone of the ecosystem. Interestingly, photocatalytic degradation using nanomaterials has emerged as an effective method to mitigate AOC pollution. Thus, this study aims to review and analyze original research works directed toward the photocatalytic degradation of AOC in the aqueous environment. In this study, the photocatalytic degradation efficiency of various nanomaterials is investigated for different aromatic organoarsenic compounds. In addition, an empirical analysis was conducted on the impact of electron trapping and radical scavengers. Furthermore, photocatalytic degradation kinetics and mechanisms were pragmatically discussed. Also, recyclability, stability, and real-life applicability were empirically evaluated. According to this review, most nanomaterial materials had maximal photocatalytic degradation efficiencies of &gt;75% for most AOCs within an average time of 6–330 min. The radical scavenging study revealed that ^●OH and O₂^● mechanistically play a major role in AOC degradation than electrons and holes. Additionally, it was shown that expended photocatalysts can be eluted mostly with H₂O/NaOH and recycled up to 3–6 rounds with a degradation efficiency of &gt;80% in most cases while maintaining their original structural integrity. This indicates that the method has the potential to be both environmentally friendly and industrially scalable. Ultimately, research gaps were highlighted, which can help researchers identify future research hotspots and open doors for technique advancement.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1130-1153"},"PeriodicalIF":1.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141969351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, molecular docking, drug-likeness analysis, and ADMET prediction of nickel and zinc tetraphenyl-porphyrin complexes as possible antioxidant agents","authors":"Elhafnaoui Lanez,&nbsp;Lalmi Zerrouk,&nbsp;Lazhar Bechki,&nbsp;Touhami Lanez,&nbsp;Aicha Adaika,&nbsp;Nadjiba Zegheb,&nbsp;Kaouther Nesba","doi":"10.1002/jccs.202400167","DOIUrl":"10.1002/jccs.202400167","url":null,"abstract":"<p>Nickel tetraphenyl-porphyrin (NiTPPH₂) and zinc tetra(4-methophenyl)-porphyrin (ZnTPPH₂(p-methyl)) were successfully synthesized and characterized using ¹H NMR spectroscopy. Their antioxidant activities and interactions with the superoxide anion radical (<span></span><math>\u0000 <mrow>\u0000 <msubsup>\u0000 <mi>O</mi>\u0000 <mn>2</mn>\u0000 <msup>\u0000 <mo>•</mo>\u0000 <mo>_</mo>\u0000 </msup>\u0000 </msubsup>\u0000 </mrow></math>) were evaluated using cyclic voltammetry. Remarkably, NiTPPH₂ displayed superior antioxidant activity with an IC₅₀ value of 54.57 μg mL⁻¹, significantly outperforming α-tocopherol (IC₅₀ = 353.27 μg mL⁻¹), indicating its potential as a potent antioxidant. Binding free energy calculations demonstrated that electrostatic interactions predominantly govern the binding, with values of −23.47 kJ mol⁻¹ for NiTPPH₂ and −22.50 kJ mol⁻¹ for ZnTPPH₂(p-methyl). These values suggest robust binding affinities with <span></span><math>\u0000 <mrow>\u0000 <msubsup>\u0000 <mi>O</mi>\u0000 <mn>2</mn>\u0000 <msup>\u0000 <mo>•</mo>\u0000 <mo>_</mo>\u0000 </msup>\u0000 </msubsup>\u0000 </mrow></math>. Quantum chemical parameters, obtained through density functional theory (DFT), showed a strong correlation with experimental results, validating the computational approach. Additionally, ADMET (Absorption, Distribution, Metabolism, Excretion, and Toxicity) and drug-likeness assessments, alongside molecular docking studies, highlighted favorable pharmacokinetic profiles and binding affinities. These findings underscore the potential of NiTPPH₂ and ZnTPPH₂(p-methyl) as promising candidates for antioxidant therapy, exhibiting drug-like properties and favorable pharmacokinetics. This research advances the understanding of these porphyrin derivatives and their application in the development of novel antioxidant therapeutics.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1211-1229"},"PeriodicalIF":1.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of substituents on mutual induced-fit process, responsible for effective hydrogen-bonded capsule formation","authors":"Sarvjeet Kaur,&nbsp;M. M. Lee,&nbsp;Shih-Sheng Sun,&nbsp;Ashutosh S. Singh","doi":"10.1002/jccs.202400140","DOIUrl":"10.1002/jccs.202400140","url":null,"abstract":"<p>Molecular cavities formed by π-conjugated component(s) generally, tend to collapse in the absence of guest molecule(s) especially in the solution-state, because of strong π•••π interactions between molecular components. Recently, we have explored the importance of mutual induced-fit effect to sort out this issue. In the present report, we have shown the role of substituents on the effectiveness of mutual induced-fit process in an artificial system.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1324-1329"},"PeriodicalIF":1.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141944778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A versatile precursor for one-pot synthesis of novel azo-thiazole and thiazole scaffolds as prospective antimicrobial and antioxidant agents","authors":"Zahra M. Alamshany,&nbsp;Nada Y. Tashkandi,&nbsp;Ismail M. M. Othman","doi":"10.1002/jccs.202400173","DOIUrl":"10.1002/jccs.202400173","url":null,"abstract":"<p>In this study, we present a simple method for preparing a new series of thiazoles with excellent isolated yields. To synthesize the target thiazole scaffolds, a straightforward one-pot procedure was developed including an amine-mediated reaction of isoxazolethiazolidin-4-one derivative, thiosemicarbazide, and appropriate hydrazonyl chlorides. The reaction conditions for this one-pot protocol were optimized by experimenting with different solvents and amines. The best results were achieved by conducting the reaction in dioxane with triethylamine at 100°C for 5 h. The structures of the desired products were proved by different elemental analyses and spectral data. Additionally, the antimicrobial efficacy of all target derivatives was assessed against various types of microorganisms. The results observed indicated that the antimicrobial activity of the thiosemicarbazone derivative <b>2</b> was the strongest activity among the new series, with MIC values ranging from 0.03 ± 0.01 to 0.98 ± 0.15 μg/mL. Moreover, antioxidant evaluations were conducted on all the desired targets, using ascorbic acid as a reference drug. Significantly, derivatives <b>2</b> and <b>10</b> demonstrated the most promising antioxidant inhibitory effects. Additionally, further toxicity studies were performed on the most active novel compounds, revealing their best drug-like properties and varying toxicity risks in humans.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 10","pages":"1309-1323"},"PeriodicalIF":1.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141885199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective colorimetric detection of inorganic arsenic (iAsIII) using homocysteine-modified gold nanoparticles","authors":"Wei-Bin Tseng,&nbsp;Chien-Er Huang,&nbsp;Huan-Tsung Chang","doi":"10.1002/jccs.202400133","DOIUrl":"10.1002/jccs.202400133","url":null,"abstract":"<p>Arsenic contamination in environmental waters poses global health and environmental risks. This study addresses the urgent need for rapid, selective, and sensitive detection of inorganic arsenic (iAs^III) in environmental samples. Leveraging the unique properties of gold nanoparticles (AuNPs) and the selective binding affinity of homocysteine (Hcy), we developed a novel colorimetric sensor for iAs^III detection. Our investigation elucidates the mechanism by which Hcy modifies AuNPs, enabling the selective detection of iAs^III ions through chelation between amine and carboxyl groups, primarily with the predominant species H₂AsO₃⁻ at pH 12.0. Our sensor achieves high selectivity (&gt;10-fold) for iAs^III amid various interfering ions commonly found in environmental samples. Furthermore, we demonstrate exceptional sensitivity in detecting iAs^III, with a low limit of detection (LOD) of 67 nM, aligning with regulatory standards for arsenic concentration in drinking water. The selectivity and sensitivity of our sensor were validated through experiments with various metal ions and real water samples. In conclusion, our study presents a comprehensive understanding of the mechanism, selectivity, and sensitivity of Hcy-modified AuNPs in detecting iAs^III, offering a versatile nanosensor platform with significant implications for environmental monitoring and public health.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 8","pages":"843-851"},"PeriodicalIF":1.6,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141871046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to “Experimental study on synchrotron radiation photoionization of secondary organic aerosol derived from styrene ozonolysis”","authors":"","doi":"10.1002/jccs.202401004","DOIUrl":"10.1002/jccs.202401004","url":null,"abstract":"&lt;p&gt;\u0000 &lt;span&gt;M. -Q. Huang&lt;/span&gt;, &lt;span&gt;H. -H. Wang&lt;/span&gt;, &lt;span&gt;X. -B. Shan&lt;/span&gt;, &lt;span&gt;L.-S. Sheng&lt;/span&gt;, &lt;span&gt;C.-J. Hu&lt;/span&gt;, &lt;span&gt;X. -J. Gu&lt;/span&gt;, &lt;span&gt;W. -J. Zhang&lt;/span&gt;\u0000 &lt;/p&gt;&lt;p&gt;&lt;i&gt;J. Chin. Chem. Soc&lt;/i&gt;. &lt;b&gt;2023&lt;/b&gt;, &lt;i&gt;70&lt;/i&gt;, 938&lt;/p&gt;&lt;p&gt;https://doi.org/10.1002/jccs.202200557&lt;/p&gt;&lt;p&gt;In fact, photoionization mass spectra of styrene particles are obtained at under synchrotron radiation of 15.0, 12.5, and 10.0 eV. Due to our carelessness, the synchrotron radiation energy was mistakenly written as 15.0, 12.5, and 10.5 eV.&lt;/p&gt;&lt;p&gt;In this correction, we present the photoionization mass spectra of styrene particles with synchrotron radiation photon energies of 10.0, 12.5, and 15.0 eV, respectively. Meanwhile, the photon energy of synchrotron radiation in the text is modified. The main conclusions of the original work remain unaffected by the corrections. The corrections are as follows.&lt;/p&gt;&lt;p&gt;The VUV-PIMS in U14-A of the Hefei National Synchrotron Radiation Laboratory is used to detect styrene particles in real-time.&lt;/p&gt;&lt;p&gt;&lt;i&gt;is replaced with&lt;/i&gt;&lt;/p&gt;&lt;p&gt;The synchrotron photon energy provided by U14-A is ranged from 8 to 16 eV. While photon energy at 10.5 eV is generally used to measure the photoionization mass spectrum of organic compounds in our previous studies.&lt;/p&gt;&lt;p&gt;&lt;i&gt;is replaced with&lt;/i&gt;&lt;/p&gt;&lt;p&gt;photon energies of 10.5, 13.0, and 15.5 eV are selected successively in an increment of 2.5 eV for the measurement of styrene particles.&lt;/p&gt;&lt;p&gt;&lt;i&gt;is replaced with&lt;/i&gt;&lt;/p&gt;&lt;p&gt;During the detection, the energy of the synchrotron radiation photon is 10.5 eV.&lt;/p&gt;&lt;p&gt;&lt;i&gt;is replaced with&lt;/i&gt;&lt;/p&gt;&lt;p&gt;Figure 3 shows the photoionization mass spectra of styrene particles with synchrotron radiation photon energies of 10.5, 13.0, and 15.5 eV, respectively. The molecular ion (C&lt;sub&gt;8&lt;/sub&gt;H&lt;sub&gt;8&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;, m/z = 104) and protonated molecular ion peak (C&lt;sub&gt;8&lt;/sub&gt;H&lt;sub&gt;9&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;, m/z = 105) of styrene are detected when the photon energy is 10.5 eV.&lt;/p&gt;&lt;p&gt;&lt;i&gt;is replaced with&lt;/i&gt;&lt;/p&gt;&lt;p&gt;When the photon energy is 13.0 eV, fragment peaks with m/z = 103 and m/z = 77 are detected. When the photon energy is 15.5 eV, the intensity of the peaks with m/z = 103 and m/z = 77 increases significantly. According to the structure of the styrene molecule, the peaks of m/z = 103 and m/z = 77 may be the fragmentation peaks generated by photodissociation of the hydrogen atom and vinyl group from the molecular ion peak.&lt;/p&gt;&lt;p&gt;&lt;i&gt;is replaced with&lt;/i&gt;&lt;/p&gt;&lt;p&gt;However, photoionization efficiency curve (PIE) of styrene molecular ion (C&lt;sub&gt;8&lt;/sub&gt;H&lt;sub&gt;8&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;) shown in Figure 4 is the same as the PIE figure obtained by Kobayashi et al.(Kobayashi T., Phys. Lett. A 1978, 69, 105.)&lt;/p&gt;&lt;p&gt;Figure 4 displays the photoionization efficiency curve of the styrene molecular ion (C&lt;sub&gt;8&lt;/sub&gt;H&lt;sub&gt;8&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt;). There is an obvious threshold at 8.46 eV, and the ionization potential of the styrene molecule (IP(C&lt;sub&gt;8&lt;/sub&gt;H&lt;sub&gt;8&lt;/sub&gt;&lt;","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 9","pages":"1121-1126"},"PeriodicalIF":1.6,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jccs.202401004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141873199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}