Journal of Chemical Sciences最新文献

{"title":"Synthesis of rhodium catalyst [Rh(cod)(TTT)2] with amino group ligand and its catalytic performance for phenylacetylene polymerization","authors":"Mingyu Zhang,&nbsp;Dong Yan,&nbsp;Rui Xu,&nbsp;Yuqi Tang,&nbsp;Shuangping Xu,&nbsp;Yanqing Qu,&nbsp;Jingyu Xu,&nbsp;Boyu Du,&nbsp;Hongge Jia","doi":"10.1007/s12039-023-02246-2","DOIUrl":"10.1007/s12039-023-02246-2","url":null,"abstract":"<div><p>A new rhodium complex [Rh(cod)(TTT)₂] was synthesized by [Rh(cod)Cl]₂ as a precursor, and 4,4',4''-(1,3,5-triazine-2,4,6-triyl)trianiline (TTT) as a ligand. Its structure was verified by ¹H and ¹³C NMR. The results indicate that the complex shows high activity in phenylacetylene polymerization. It was applied to the polymerization of phenylacetylene with a yield of 45.0% and Mw = 2.26×10⁵ at ultra-low rhodium feed ratio ([Rh.]/[M.]=1/60000).</p><h3>Graphical abstract</h3><p>A new rhodium complex [Rh(cod)(TTT)₂] was synthesized by [Rh(cod)Cl]₂ as a precursor, and 4,4',4''-(1,3,5-triazine-2,4,6-triyl)trianiline (TTT) as a ligand. It was applied to the polymerization of phenylacetylene with a yield of 45.0% and Mw = 2.26×10⁵ at ultra-low rhodium feed ratio ([Rh.]/[M.]=1/60000\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139771756","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":"Incorporation of Ag decorated rGO ON TiO2/dye photoanode for dye-sensitized solar cell applications","authors":"M Sheeba Gnana Selvi,&nbsp;G V Vijayaraghavan,&nbsp;B Janarthanan,&nbsp;K Inbarajan","doi":"10.1007/s12039-023-02248-0","DOIUrl":"10.1007/s12039-023-02248-0","url":null,"abstract":"<p>A dye-sensitized solar cell (DSSC) has been fabricated with a photoanode made with silver-decorated reduced graphene oxide over the layer of TiO₂ nanoparticle coated over the FTO substrate using the Doctor Blade method. Due to the excellent electrical conductivity of silver decorated reduced graphene oxide and high adsorption of dye molecules, the cell parameters are enhanced. Three different concentrations of Ag decorated rGO (0.1% wt, 0.2% wt, and 0.3% wt) have been considered for this study and are compared with pure TiO₂-based DSSC. It is confirmed that the 0.1% wt concentration of TiO₂-Ag decorated rGO has shown better performance than the other concentrations as well as the pure TiO₂ photoanode. Natural dyes having chlorophyll pigment have been used as sensitizers, and graphene-based counter electrodes are incorporated in all solar cells. DSSC of 0.1% wt concentration of TiO₂-Ag decorated rGO has given short circuit current density, open circuit voltage, fill factor, and power conversion efficiency of 3.768 mA/cm², 0.6518 V, 0.566, and 1.39%, respectively. The higher the concentration of Ag decorated rGO with TiO₂, the lower the electron injection into the semiconductor oxide with increased band gap energy.</p><p>In this experiment, we found that 0.1% wt concentration of TiO₂-Ag decorated rGO has given a short power conversion efficiency of 1.39%, respectively.</p>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139771800","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 kinetic and mechanistic investigation of oxidation of D-Mannitol by Diperiodatocuprate (III) in an aqueous alkaline medium","authors":"Sandeep R Kurundawade,&nbsp;Sharanappa T Nandibewoor","doi":"10.1007/s12039-023-02240-8","DOIUrl":"10.1007/s12039-023-02240-8","url":null,"abstract":"<div><p>The study investigates the kinetics associated with the oxidation of D-Mannitol (D-Mann) by diperiodatocuprate(III) (DPC) in an aqueous alkaline medium using spectrophotometric method. Reaction medium’s ionic strength was maintained constant at 0.60 mol dm^-3. First-order kinetics in [DPC] and less than unit order for [D-Mann] and [alkali] were observed in the reaction. It was of the negative fractional order in [periodate]. It was determined that the reaction of substrate D-Mann with DPC in an alkaline medium shows 1(D-Mann):4(DPC) stoichiometry. Ionic strength of the medium had no effect on the rate of reaction and same was the observation with dielectric constant. The products of reaction were identified by FTIR and confirmed by LC-ESI-MS spectral data. The reaction constants for each step of the mechanism were determined. For the slow step of reaction mechanism, activation parameters were calculated and discussed. Further, thermodynamic quantities for the reactions were also estimated.</p><h3>Graphical abstract</h3><p>Based on the literature survey, DPC was chosen for the current study. DPC was prepared by the reported methods as cited in the manuscript. Stable reaction mixtures were prepared in two different reagent bottles and maintained at a desired temperature using a water bath. The reaction between the oxidant DPC and substrate D-Mannitol was spectrophotometrically analyzed by a UV-Vis spectrophotometer. With the help of data obtained, graphs were plotted to obtain k_obs for different variations, and the mechanism was synthesized. A rate law for the reaction under investigation was proposed based on the results and mechanism.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139773299","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":"Comparative DNA binding ability and phosphatase-like activity of mono and dinuclear Ni (II) complexes: a structure-activity correlation","authors":"Vaishali Yadav,&nbsp;Rohitash Kumar,&nbsp; Rishu,&nbsp;Vimal K Bhardwaj","doi":"10.1007/s12039-023-02242-6","DOIUrl":"10.1007/s12039-023-02242-6","url":null,"abstract":"<div><p>Two Ni(II) complexes <b>[(Ni L1)(CH</b>_<b>3</b><b>COO) (H</b>_<b>2</b><b>O)</b>_<b>2</b><b>](1)</b> and <b>[{(NiL2) (CH3COO)}</b>_<b>2</b><b> (µ-H</b>_<b>2</b><b>O)] (2)</b> having different coordination environments around metal centres have been selected to investigate structure-activity correlation for DNA binding and homogenous phosphatase-like activities. Complex <b>1</b> is a monomer in which the octahedral Ni(II) center is coordinated to phenolate oxygen along with two nitrogen atoms from imine and amine groups of the deprotonated ligand <b>HL1</b>. An oxygen atom of the acetate group is coordinated in monodentate mode, and two coordinated water molecules occupy the other two axial sites. Complex <b>2</b> is a dimer where each Ni(II) centre is coordinated in an octahedral environment through one imine nitrogen, one amine nitrogen, two bridging phenolate oxygens from two deprotonated ligands (<b>HL2)</b> molecules, a mono-dentate acetate group, and a bridging water molecule. The role of structural features of both the complexes has been studied in DNA binding activity and phosphate ester bond cleavage of bis(4-nitrophenyl) phosphate (BNPP) as a model substrate. Complex <b>2</b> showed higher DNA binding ability than complex <b>1</b> due to its stable bridging structure and high nuclearity. The catalytic phosphate ester bond hydrolysis of BNPP was explored with both complexes spectrophotometrically. The dinuclear complex <b>2</b> also exhibited a higher rate of acceleration in the BNPP hydrolysis than mononuclear complex <b>1</b>. The active nucleophile from the coordinated water and cooperativity in two metal centres of complex <b>2</b> are the key features to cleave the phosphate ester bond of the substrate. Further, the first-order rate constants and various kinetic parameters based on the Michaelis-Menten equation were calculated for each complex. A significant phosphatase-like activity for complex <b>2</b> has been observed with a turnover number of 1.23 × 10⁻² s⁻¹.</p><h3>Graphical abstract</h3><p>A structure-activity relationship for phosphatase-like catalytic activities of two mono and di nuclear Ni(II) complexes has been studied. Dinuclear complex <b>2</b> exhibits higher phosphatase-like activity due to coordinated water molecules and cooperativity between two metal centres.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139771887","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":"Oxidative decarboxylation of arylacetic acids and arylacetic esters with singlet molecular oxygen generated from trans-5-hydroperoxy-3,5-dimethyl-1,2-dioxolan-3-yl ethaneperoxate","authors":"Z Najminejad","doi":"10.1007/s12039-023-02243-5","DOIUrl":"10.1007/s12039-023-02243-5","url":null,"abstract":"<div><p>An efficient method for the oxidative decarboxylation of arylacetic acids and arylacetic esters using trans-5-hydroperoxy-3,5-dimethyl-1,2-dioxolane-3-yl ethaneperoxate in combination with KOH as base is reported. The decarboxylation of carboxylic acids and their derivatives was efficiently achieved with singlet molecular oxygen. Singlet molecular oxygen was produced <i>in situ</i> from the fragmentation of the trans-5-hydroperoxy-3,5-dimethyl-1,2-dioxolane-3-yl ethaneperoxate in the presence of KOH, and it has been explored as an effective oxidant for oxidative decarboxylation of arylacetic acids. Further investigation showed that the reaction also permits the synthesis of aromatic ketones by oxidative decarboxylation of arylacetic esters.</p><h3>Graphical abstract</h3><p>An efficient method for the oxidative decarboxylation of arylacetic acids and arylacetic esters is reported.The decarboxylation of carboxylic acids and their derivatives were efficiently achieved with singlet molecular oxygen. Singlet molecular oxygen was produced insitu from fragmentation of the trans-5-hydroperoxy-3,5-dimethyl-1,2- dioxolane-3-yl ethaneperoxate in the presence of KOH, and it has been explored as an effective oxidant for oxidative decarboxylation of arylacetic acids and arylacetic esters.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139771946","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":"Star-shaped Te(VI)-Te(VI) complex and an octanuclear heterometallic Te2Sb6 oxo cluster","authors":"Gujju Narsimhulu,&nbsp;Viswanathan Baskar","doi":"10.1007/s12039-023-02238-2","DOIUrl":"10.1007/s12039-023-02238-2","url":null,"abstract":"<div><p>The reaction of telluric acid with di-organotellurium di chloride (R₂TeCl₂) and tri-organoantimony dichloride (R₃SbCl₂) has been carried out in binary solvent using solvothermal synthesis method and isolated high-phase purity compounds. Single crystal X-ray diffraction studies revealed the formation of a novel mixed valent tellurium (VI) containing clusters Te^VI[OTe^IV(<i>p</i>-MeOC₆H₄)₂Cl]₆ (R = <i>p</i>-MeOC₆H₄) (<b>1</b>) and [Te(µ₂-O₅SbPh₃)(OSbh₃Cl)]₂ (<b>2</b>). Cluster <b>1</b> has a central Te(VI) atom which is connected to six oxygen atoms octahedrally, further this oxygens bridging to six other tellurium atoms (IV). Cluster <b>2</b> is an octanuclear heterometallic cluster that is built up of a [Te (VI), Sb (V)] Te₂Sb₆ oxo-centered butterfly core. The products have been analyzed using single crystal X-ray diffractions, powder X-ray diffraction, and IR spectroscopic and analytical methods.</p><h3>Graphical Abstract</h3><p>A star-shaped mixed valent tellurium [(VI), (IV)] cluster Te^VI[OTe^IV(<i>p</i>-MeOC₆H₄)₂Cl]₆ (<b>1</b>) has been synthesized in binary solvent (Acetonitrile/DMF) medium. Cluster [Te(µ₂-O₅SbPh₃)(OSbh₃Cl)]₂ (<b>2)</b> is an octanuclear heterometallic assembly built up of Te (VI) and Sb (V) ions, containing an oxo-centered butterfly core.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139771794","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":"Interplay of structure and dynamics in reaction pathways, chemical reactivity and biological systems","authors":"Dilip K Maity,&nbsp;Satrajit Adhikari,&nbsp;Susanta Mahapatra","doi":"10.1007/s12039-023-02233-7","DOIUrl":"10.1007/s12039-023-02233-7","url":null,"abstract":"","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139683236","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":"KOH-catalyzed cross-coupling of primary and secondary alcohols: evidence for radical pathways","authors":"Amlan Subhadarshi Nayak,&nbsp;Shubham Jaiswal,&nbsp;Manas Kumar Sahu,&nbsp;Chidambaram Gunanathan","doi":"10.1007/s12039-023-02241-7","DOIUrl":"10.1007/s12039-023-02241-7","url":null,"abstract":"<div><p>A simple base, KOH-catalyzed cross-coupling of primary and secondary alcohols is reported in which the primary alcohols play the role of alkylation reagents. EPR and mechanistic studies confirmed the involvement of radical and ketone intermediates formed from primary and secondary alcohols, respectively, leading to the formation of <i>β</i>-alkylated secondary alcohols.</p><h3>Graphical abstract</h3><p>A simple base-catalyzed synthesis of higher secondary alcohols directly from the cross-coupling of primary and secondary alcohols is reported.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139500519","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":"Mono- versus bifunctionalized Schiff base as a condensation product of m-phenylenediamine and salicylaldehyde: experimental and computational studies","authors":"Damir A. Safin","doi":"10.1007/s12039-023-02234-6","DOIUrl":"10.1007/s12039-023-02234-6","url":null,"abstract":"<div><p>A.Z. El-Sonbati <i>et al.</i>, in their article “Synthesis, characterization of Schiff base metal complexes and their biological investigation” (<i>Appl. Organometal. Chem.</i> 2019, <i>33</i>, e5048) reported on the synthesis of a new Schiff base named (<i>E</i>)-2-(((3-aminophenyl)imino)methyl)phenol (also known as <i>N</i>-salicylidene-<i>m</i>-phenylenediamine, <b>HL</b>), which was obtained through condensation reaction of <i>m</i>-phenylenediamine and salicylaldehyde in a 1:1 molar ratio. The reported Schiff base <b>HL</b> was involved in the complexation reaction with a series of metal cations named Cr(III), Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and Cd(II). Although no crystal structures of either the parent ligand <b>HL</b> or its complexes with the mentioned metal cations were reported, the newly synthesized compounds were characterized by means of elemental analysis, IR-, UV-vis- and ¹H NMR spectroscopy, mass-spectrometry, magnetic susceptibility, conductivity and thermal analyses. The antimicrobial activity of the discussed compounds, together with the molecular docking results, were also reported. Additionally, both the Schiff base <b>HL</b> and its metallocomplexes were thoroughly examined by quantum chemical calculations. Despite a plethora of different methods being applied to characterize the obtained compounds, herein, I argue that discussion of the results is doubtful. Furthermore, the results of quantum chemical calculations are dubious and must be reconsidered. Although numerous synthetic attempts failed in this work, the hypothetically possible Schiff base <b>HL</b> was revisited using quantum chemical calculations.</p><h3>Graphical abstract</h3><p>A.Z. El-Sonbati <i>et al.</i>, in their article “Synthesis, characterization of Schiff base metal complexes and their biological investigation” (<i>Appl. Organometal. Chem.</i> 2019, <i>33</i>, e5048) reported on a new Schiff base (<i>E</i>)-2-(((3-aminophenyl)imino)methyl)phenol (also known as <i>N</i>-salicylidene-<i>m</i>-phenylenediamine, <b>HL</b>) and its metallocomplexes. Herein, I argue that the discussion of the results is doubtful.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139375668","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":"Exploring Proton Conductivity Studies of a Copper-based Hydroxylated Polyoxometalate","authors":"Athira Ravi,&nbsp;Ratri Biswas,&nbsp;Sarbani Das,&nbsp;Samar K. Das","doi":"10.1007/s12039-023-02237-3","DOIUrl":"10.1007/s12039-023-02237-3","url":null,"abstract":"<div><p>A sole inorganic framework-material formulated as [Li(H₂O)₄][{Cu^I(H₂O)_1.5} {Cu^II(H₂O)₃}₂{W^VI₁₂O₃₆(OH)₆}]·N₂·H₂S·3H₂O (<b>1</b>), consisting of a hydroxylated polyoxometalate (POM) anion, [{W^VI₁₂O₃₆(OH)₆}]⁶⁻ and a mixed-valent Cu(II)- and Cu(I)-aqua cationic complex species, [{Cu^I(H₂O)_1.5}{Cu^II(H₂O)₃}₂]⁵⁺, has been utilized to explore its proton conductivity studies. The POM cluster anion is functionalized with six hydroxyl groups, meaning there are six W^VI-OH groups per cluster unit. Compound <b>1</b>, insoluble in water, can be described as an inorganic acid because its water suspension shows an acidic pH. The presence of these six hydroxyl groups per cluster unit having six labile protons has encouraged us to perform proton conductivity studies of this system. The highest proton conductivity of compound <b>1</b> is 1.72 ×10⁻² S cm⁻¹ at a temperature of 80 °C at 98% relative humidity (RH). Arrhenius plot has been constructed from the temperature-dependent proton conductivity values. The concerned Arrhenius plot has shown good linearity throughout the temperature range of 40 to 80 °C, revealing an activation energy of 0.41 eV. The compound has also shown remarkable stability in the conductivity value for 40 h.</p><h3>Graphical Abstract</h3><p>The proton conductivity studies of a framework-material [Li(H₂O)₄][{Cu^I(H₂O)_1.5} {Cu^II(H₂O)₃}₂{W^VI₁₂O₃₆(OH)₆}]·N₂·H₂S·3H₂O (<b>1</b>) have been performed. Compound <b>1</b> exhibits proton conductivity value of 1.72 ×10⁻² S cm⁻¹ at a temperature of 80 °C at 98% relative humidity. The concerned Arrhenius plot gives the activation energy value of 0.41 eV. \u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":616,"journal":{"name":"Journal of Chemical Sciences","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138947645","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}