Journal of Photochemistry and Photobiology A-chemistry最新文献

Designing of small molecule donors with the help of machine learning for organic solar cells and performance prediction 借助机器学习为有机太阳能电池设计小分子供体并进行性能预测

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-12 DOI: 10.1016/j.jphotochem.2024.116026

引用次数: 0

Analysis of electronic properties and sensing applications in Graphene/BC3 heterostructures 石墨烯/BC3 异质结构的电子特性和传感应用分析

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-12 DOI: 10.1016/j.jphotochem.2024.116016

{"title":"Analysis of electronic properties and sensing applications in Graphene/BC3 heterostructures","authors":"","doi":"10.1016/j.jphotochem.2024.116016","DOIUrl":"10.1016/j.jphotochem.2024.116016","url":null,"abstract":"<div>Many research studies have been conducted into the applications of the heterostructures of graphene (Gr) and boron carbide (BC3) in real-world devices after they were synthesized successfully by researchers. Thanks to their unique electronic attributes and high surface-to-volume ratio, the above-mentioned two-dimensional nanosheets (NSs) such as have enjoyed the interest of many research groups and scientists. Within this piece of research, the electronic and structural attributes of pure Gr (PGr), pure BC3 (PBC3) and their in-plane heterostructures were investigated by employing the DFT along with the density functionals B3LYP and WB97XD. The results demonstrated that by increasing the concentration of the B-C, there was a gradual increase in the bandgap. Also, the structural stability of the NSs was good and the cohesive energy was favourable. In addition, the adhesion attributes of these NSs were investigated towards two toxic gasses, namely CO and SO2. Amongst the heterostructures, after exposure to CO and SO2, the adhesion energy of GBC3I was greater, which was approximately −0.487 eV and −0.229 eV, respectively. Following the adhesion of SO2 onto the surface of the NSs, apart from the PGr, there was a significant change in their electronic attributes such as conductance, workfunction, Fermi level, the LUMO, the HOMO and the bandgap. However, following the adhesion of CO, the above-mentioned attributed remained almost the same. Based on the NBO and Mulliken charge analysis, there was a charge transport from the gasses to the NSs. Despite the fact that the adhesion energies for CO were relative higher than the adhesion energies for SO2 <!-->for the NSs, the analysis of the MEP maps, the charge transport and the electronic attributes demonstrated that the NSs can be used as promising nanosensors for the detection of SO2 rather than CO.</div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ni(II)/Yb(III)-metallogels for distinctive fluorescent ‘turn-on’ detection of m-phenylenediamine: Toward construction of multiple logic gates 用于间苯二胺独特荧光 "开启 "检测的镍（II）/镱（III）金属凝胶：构建多重逻辑门

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-11 DOI: 10.1016/j.jphotochem.2024.116003

{"title":"Ni(II)/Yb(III)-metallogels for distinctive fluorescent ‘turn-on’ detection of m-phenylenediamine: Toward construction of multiple logic gates","authors":"","doi":"10.1016/j.jphotochem.2024.116003","DOIUrl":"10.1016/j.jphotochem.2024.116003","url":null,"abstract":"<div>New versatile Schiff base gelator (HL) and its highly selective Ni(II)-and Yb(III)-based metallogels 1–2 have been synthesized and characterized by spectral techniques. Gelator HL in presence of triethylamine (Et3N) with Ni(NO3)2·6H2O and anhydrous Yb(NO3)3 in DMF/MeOH(1:1) solvents forms MG1 and MG2 supramolecular gels, respectively at room temperature (rt). Rheological results show thermal stability up to 100 ℃ and structurally rigid nature of MG1 and MG2. Remarkably, MG1 and MG2 were examined for identification of cations, anions, nitroaromatics and aromatic amines (AAs) but unable to recognize any analytes except for m-phenylenediamine (MPD) by using MG1. Metallogel MG1 shows highly selective response to MPD environmental pollutant with a limit of detection (LoD) of 7.58 × 10-7 M, without any interference of competing analytes. Interestingly, depending upon fascinating fluorescent On-Off-On switching behavior, molecular logic device has been fabricated with AND and IMPLICATION-logic gates function by employing the chemical inputs (i) HB, Ni(II) (MG1), Yb(III) (MG2) and (ii) HB, MG1 and MPD based on emission change at different wavelengths as output signal.</div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142169468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A single fluorophore, single-component system for advancing white-light emission in aqueous media with ultrafast dynamical study 在水介质中推进白光发射的单荧光团、单组分系统与超快动力学研究

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-10 DOI: 10.1016/j.jphotochem.2024.116022

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Sensitive and selective fluorescence detection of acetamiprid using oxidized single-walled carbon nanohorns and cryonase-assisted signal amplification 利用氧化单壁碳纳米角和低温酶辅助信号放大技术灵敏、选择性地荧光检测啶虫脒

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-10 DOI: 10.1016/j.jphotochem.2024.116025

{"title":"Sensitive and selective fluorescence detection of acetamiprid using oxidized single-walled carbon nanohorns and cryonase-assisted signal amplification","authors":"","doi":"10.1016/j.jphotochem.2024.116025","DOIUrl":"10.1016/j.jphotochem.2024.116025","url":null,"abstract":"<div>To address the low accuracy of pesticide residue detection in traditional Chinese medicine, we developed a biosensor for acetamiprid detection. First, an oxidized single-walled carbon nanohorn capable of adsorbing and quenching fluorescence was prepared. Second, a novel fluorescence sensing system was constructed based on this nanomaterial. The detection performance of the sensor system was evaluated, which revealed that fluorescence quenching by the biosensor was primarily due to the adsorption of the aptamer by the nanomaterials. Optimal conditions were found to be a nanomaterial mass concentration of 800 ng/mL and an incubation time of 70 min, which resulted in the best fluorescence response. Under these optimal conditions, the system was used to detect acetamiprid residues in traditional Chinese medicine. The fluorescence intensity showed a strong linear relationship with acetamiprid concentration, with a correlation coefficient of 0.9985 and a detection limit of 6.33 ng/mL. In the sample test, the biosensor demonstrated high accuracy, with good average recovery rates and low relative standard deviation. The system showed excellent selectivity and detection performance, with no interference from other pesticides.</div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142171710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing UV light sensitivity of PVP polymer by doping chromium trioxide via the electrospun solutions 通过电纺溶液掺杂三氧化二铬提高 PVP 聚合物的紫外光灵敏度

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-10 DOI: 10.1016/j.jphotochem.2024.116017

{"title":"Enhancing UV light sensitivity of PVP polymer by doping chromium trioxide via the electrospun solutions","authors":"","doi":"10.1016/j.jphotochem.2024.116017","DOIUrl":"10.1016/j.jphotochem.2024.116017","url":null,"abstract":"<div>Herein, chromium trioxide (Cr2O3) doped Polyvinylpyrrolidone(PVP) nanofibers with high crystallinity and UV light sensitivity are successfully grown onto the glass substrates by electrospun deposition at room temperature. The effect of Cr2O3 concentration on the morphology, structure, and photoluminescence properties of the as-fabricated PVP nanofibers is examined. With the increase in doping concentration of Cr2O3 (i.e., 1, 2 and 3 %), the direct band gap of PVP nanofibers is reduced to 4.05, 4.01, and 3.85 eV, respectively. XRD and FE-SEM results manifest that the crystallinity and diameter of the nanofibers are dependent upon Cr2O3 concentration, i.e., the mean diameter decreases from 600 to 200 nm. Photoluminescence spectra indicate higher UV emission upon the addition of Cr2O3, with greater emission near the band edge for thinner nanofibers. A possible mechanism for the formation of PVP/Cr2O3 nanofibers is addressed in detail. Furthermore, it is found that the sensitivity of the as-fabricated PVP/Cr2O3 detector to UV-light emission strongly depends on Cr2O3 concentration, i.e., good responsivity (2.257 A/W) and specific detectives (9.8 <math><mo>×</mo></math> 1012 cm Hz1/2/W) at a Cr2O3 concentration of 2 % are achieved at a wavelength of 454.1 nm, besides recording the lowest rise and fall times.</div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A fluorescent probe derived from triphenylamine-benzofuranone for monitoring carboxylesterases and its imaging in drug-induced liver cellular injury 一种来自三苯胺-苯并呋喃酮的荧光探针，用于监测羧酸酯酶及其在药物诱导的肝细胞损伤中的成像

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-07 DOI: 10.1016/j.jphotochem.2024.116005

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Side-chain engineering of 4-aryl-1,8-naphthalimides: Fine-tuning for mechnochromic and vapochromic response in dual-state emission mode 4-芳基-1,8-萘二甲酰亚胺的侧链工程：微调双态发射模式中的瞬变色和汽变色响应

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-07 DOI: 10.1016/j.jphotochem.2024.116002

{"title":"Side-chain engineering of 4-aryl-1,8-naphthalimides: Fine-tuning for mechnochromic and vapochromic response in dual-state emission mode","authors":"","doi":"10.1016/j.jphotochem.2024.116002","DOIUrl":"10.1016/j.jphotochem.2024.116002","url":null,"abstract":"<div>An alkyl chain engineering strategy is described to design mechanochromic and vapochromic response molecules with dual state emission. Based on a red emissive AIE-active fluorophore (NAPTPA-phenol), the alkyl chains with different length (C2 ∼ C8) are introduced to construct NAPTPA1-4 via an ester linker. All four compounds display dramatic emissions in both aggregation and solid states, which showed higher quantum yields than their precursor NAPTPA-phenol. Among these compounds, NAPTPA1 with the C2 alkyl chain shows the largest bathochromic shift (∼50 nm) from 560 nm (Φ = 92.2 %) to 610 nm (Φ = 59.2 %) between two solid states. The large shift might be assigned to the efficient intramolecular charge transfer between naphthalimide and triphenylamine and two different stacking modes (self-assembly and amorphous). The high fluorescence quantum yields in aggregation state should be attributed to restricted of intramolecular rotation of the rotor-shape 4-arylnaphthalimide fluorophores. Furthermore, the needle-like self-assembly structure is seen in the SEM pattern of NAPTPA1, which exhibited large difference comparing to NAPTPA-phenol and NAPTPA2 ∼ 4. After grinding, the amorphous forms were given to all compounds that led their similar emission bands in red region centered on 610 nm. With the dramatic dual emission color, NAPTPA1 with short side chain (C2) was used to perform a vapochromic reverse courses by using the common VOCs to fume the NAPTPA1-loaded filter paper. The test exhibits the obvious color transformation and fast reversing time (<20 s) indicating the test strip can be successfully implemented to monitor VOCs.</div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual sensing of hypochlorite and aluminium in plant tissues by a selective diimine-based chemosensor 基于二胺的选择性化学传感器对植物组织中次氯酸盐和铝的双重感应

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-06 DOI: 10.1016/j.jphotochem.2024.116004

{"title":"Dual sensing of hypochlorite and aluminium in plant tissues by a selective diimine-based chemosensor","authors":"","doi":"10.1016/j.jphotochem.2024.116004","DOIUrl":"10.1016/j.jphotochem.2024.116004","url":null,"abstract":"<div>Aluminium (Al3+) and hypochlorite (ClO−) have toxic effects on plants, affecting various physiological processes and ultimately impacting plant growth and development. Hence, the preparation of a smart tool for the detection of hypochlorite (ClO−) and Aluminium (Al3+) in water, a dual-target fluorescent chemosensor APC (anthracene-pyridine conjugate) has been synthesized. APC holds a unique diimine character when compared with a few similar diimine and interacts with both Al3+ and ClO− through charge transfer and chemodosimetric mechanisms to display green and blue fluorescence, correspondingly.The detection limits of APC for Al3+ and ClO− are 0.68 µM and 0.25 µM, respectively. The binding ratio between APC and Al3+ has been determined as 1:1 from Jobs plot analysis. The sensing mechanisms of APC with Al3+ and ClO− have been established by UV–visible, 1H NMR titration, HRMS analysis and theoretical calculations. This method has been successfully employed to examine the consequences of continued exposure to high concentrations of aluminium and hypochlorite on marigold and lettuce plants, respectively.</div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of solvothermal reaction time on adsorption and photocatalytic activity of spinel ZnFe2O4 nanoparticles 溶热反应时间对尖晶石 ZnFe2O4 纳米粒子的吸附和光催化活性的影响

IF 4.1 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-09-03 DOI: 10.1016/j.jphotochem.2024.116001

{"title":"Effect of solvothermal reaction time on adsorption and photocatalytic activity of spinel ZnFe2O4 nanoparticles","authors":"","doi":"10.1016/j.jphotochem.2024.116001","DOIUrl":"10.1016/j.jphotochem.2024.116001","url":null,"abstract":"<div>The present investigation explored the impact of solvothermal reaction time on the adsorption properties of synthesized spinel ZnFe2O4 Nanoparticles (ZF NPs) and their photocatalytic activity for the degradation of congo red (CR) dye. The structure, morphology and chemical composition is identified for the synthesized ZF NPs. The reaction times for the solvothermal synthesis of ZF NPs were investigated at time intervals of 6 hrs and 18 hrs which are denoted as ZF-6 h and ZF-18 h respectively. The XRD confirms the formation of spinel-type ZF-6 h and ZF-18 h with crystallite size of 5.50 nm and 8.36 nm for ZF-6 h and ZF-18 h respectively. The FESEM image of ZF-6 h exhibits microspheres, whereas in ZF-18 h NPs, the microspheres undergoes deformation. TEM analysis of ZF-6 h revealed that the microspheres were consists of 8–10 nm size ZF-NPs. Raman spectroscopy and XPS studies indicates, the reaction time influence the occupancy with 64 % and 32 % of inversion of Zn2+ cations from tetrahedral to octahedral sites in ZF-6 h and ZF-18 h, respectively. The surface area of mesoporous ZF-6 h and ZF-18 h are 138.29 m2/g and 128.41 m2/g respectively as confirmed using BET and BJH techniques. The CR dye adsorption capacity of 123.73 mg/g for ZF-6 h is higher compared to ZF-18 h (99.93 mg/g). The maximum dye removal efficiency evaluated for ZF-6 h NPs and ZF-18 h NPs was 87.33 % and 73.09 % respectively upon exposure of natural sunlight. The recyclability study identifies that ZF-6 h NPs remain stable for three degradation cycles. These results indicate that reaction time in solvothermal synthesis is sensitive to the morphology and physicochemical properties of ZF NPs. The enhanced performance of such ZF NPs is attributed to the synergistic effect of adsorption followed by photocatalytic (photo-Fenton) degradation of dyes.</div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142157935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0