ChemPhotoChem最新文献_第2页

Design, Synthesis, and Chemical Characterization of Pyrene-Substituted BODIPY Dyes 芘取代二聚吡啶染料的设计、合成及化学表征

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400365

Baybars Köksoy

{"title":"Design, Synthesis, and Chemical Characterization of Pyrene-Substituted BODIPY Dyes","authors":"Baybars Köksoy","doi":"10.1002/cptc.202400365","DOIUrl":"https://doi.org/10.1002/cptc.202400365","url":null,"abstract":"In this study, novel di- and tetra-pyrenylated BODIPY (boron-dipyrromethene) dyes (Bdpy2 and Bdpy4) were synthesized via the Suzuki-Miyaura cross-coupling reaction, incorporating pyrene units at specific positions on the BODIPY core. Comprehensive structural characterization was achieved through FT-IR, UV-Vis, MALDI-mass spectrometry, and NMR techniques. The optical properties were extensively analyzed in different solvents, revealing Q-band absorption maxima at 531 nm for Bdpy2 and 533 nm for Bdpy4 in THF, along with red-shifted emission peaks due to increased π–π stacking interactions. Bdpy4 displayed a fluorescence quantum yield of 0.68 and a fluorescence lifetime of 3.88 ns, surpassing Bdpy2′s values of 0.61 and 3.44 ns, respectively. These improved values in Bdpy4 highlight the enhanced energy transfer efficiency provided by the additional pyrene groups. Theoretical TD-DFT calculations supported the experimental findings, indicating effective energy transfer from pyrene to the BODIPY core. These findings suggest that the high fluorescence efficiency and extended lifetimes of pyrenylated BODIPY derivatives make them promising candidates for optoelectronic applications, including bioimaging and energy harvesting.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801832","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}

引用次数: 0

Visible-Light-Induced Tandem Cyclization of 1,7-Enynes to Access Phenanthridin-6(5H)-Ones Using a Polydimethylsiloxane (PDMS) Based Microreactor 基于聚二甲基硅氧烷（PDMS）微反应器的1,7-炔的可见光诱导串联环化制备菲那啶-6(5H)- 1

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400332

Dharavath Ravi, Vadla Shiva Prasad, Vadithya Ranga Rao, Silari Mohana Krishna, Chelukalapally Anil Kumar, Biswajit Saha, Praveen Reddy Adiyala

引用次数: 0

Purple Bacteria Reaction Center Based Solid State Bio-Solar Cell With a Large Open Circuit Voltage

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400303

Dr. Tulus Tulus, Dr. Vincent Morris Friebe, Andreas Peukert, Dr. Loreta A. Muscarella, Prof. Michael R. Jones, Dr. Raoul N. Frese, Prof. Elizabeth von Hauff

{"title":"Purple Bacteria Reaction Center Based Solid State Bio-Solar Cell With a Large Open Circuit Voltage","authors":"Dr. Tulus Tulus, Dr. Vincent Morris Friebe, Andreas Peukert, Dr. Loreta A. Muscarella, Prof. Michael R. Jones, Dr. Raoul N. Frese, Prof. Elizabeth von Hauff","doi":"10.1002/cptc.202400303","DOIUrl":"https://doi.org/10.1002/cptc.202400303","url":null,"abstract":"A novel solid state bio-solar cell is demonstrated based on a purple bacterial reaction center-light harvesting 1 complex (RC-LH1) that exhibits high quantum efficiency and long carrier lifetimes. We demonstrate that careful choice of transport layers enables a high open circuit voltage of up to 0.3 V in these solid state biophotovoltaic devices. Electronic processes were investigated with impedance spectroscopy. Equivalent circuit modelling of impedance spectra obtained under illumination at DC offset voltages between open circuit and short circuit conditions revealed two relaxations on microsecond and millisecond time scales that are attributed to the charge transit time and carrier recombination processes, respectively. The operational stability of the solar cells was examined under constant illumination for over 3 hours and a burn-in time of several minutes was observed, after which operational parameters stabilized. This work is the largest voltage reported for RC-LH1 based solid state biophotovoltaic devices to date.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 3","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595690","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}

引用次数: 0

Cu-MOF-74 as Fluorescent Probe: Selective Optical Sensor for H2S Gas Cu-MOF-74荧光探针：H2S气体选择性光学传感器

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400300

Manish Shingole, Seemita Banerjee, Brindaban Modak, Siddhartha Kolay, Jyotirmayee Mohanty, Vasanthakumaran Sudarsan

{"title":"Cu-MOF-74 as Fluorescent Probe: Selective Optical Sensor for H2S Gas","authors":"Manish Shingole, Seemita Banerjee, Brindaban Modak, Siddhartha Kolay, Jyotirmayee Mohanty, Vasanthakumaran Sudarsan","doi":"10.1002/cptc.202400300","DOIUrl":"https://doi.org/10.1002/cptc.202400300","url":null,"abstract":"In order to address the air quality issues and industrial gas leakages effectively, gas sensors must be highly sensitive, selective, stable, cost-effective, and with high life time. We present here a facile solvothermal method to synthesize a Cu based metal-organic framework (Cu-MOF-74) and demonstrated its potential as a selective fluorescent probe for environmental H2S gas detection. Cu-MOF-74 based fluorescence sensor shows strong affinity towards H2S with the limit of detection as low as 7 ppm., Though Cu-MOF-74 based sensor exhibited high sensitivity and selectivity for H2S gas over H2, SO2 and NH3, Co-MOF-74 is inactive towards H2S sensing. The increased fluorescence intensity in presence of H2S gas as well as the decreased fluorescence intensity in presence of NO2 gas was investigated by experimental observation and theoretical calculation. In presence of H2S gas, interaction between Cu and sulphur atoms occur, the bond between Cu and ligand. This reduces the extent of ligand to metal charge transfer, resulting in increase in fluorescence intensity. The present attempt led to the progress of highly selective and sensitive fluorescence-based environmental gas sensing probe using metal organic framework with a wide operating temperature ranging of 25 °C to 90 °C.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143801831","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}

引用次数: 0

Photocatalytic Activity and Stability of Carbon Nitride-Pyrite Composites

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400343

Julian Kaulbersch, Scott McGuigan, Jana Timm, Paul Maggard, Roland Marschall

{"title":"Photocatalytic Activity and Stability of Carbon Nitride-Pyrite Composites","authors":"Julian Kaulbersch, Scott McGuigan, Jana Timm, Paul Maggard, Roland Marschall","doi":"10.1002/cptc.202400343","DOIUrl":"https://doi.org/10.1002/cptc.202400343","url":null,"abstract":"In photocatalysis, the photoabsorber plays a crucial role in the reaction. The most important parameters are stability, cost and optical band gap. In this work, a prominent class of absorbers, namely carbon nitrides (CN), has been investigated. In the literature, CN is most often described as stable, although photodegradation has been observed. In order to retain the beneficial properties of CN while improving stability, a crystalline phase poly(triazine imide) (PTI) of carbon nitride was investigated and compared to polymeric CN in photocatalytic hydrogen generation experiments. In order to improve the charge separation for the photoinduced hydrogen evolution reaction, pyrite (FeS2) was used as a surface co-catalyst with a loading of 1, 5 and 10 wt %. At the same time, any photodegradation products in solution were investigated by ion chromatography. Interestingly, PTI shows hardly any photocorrosion compared to defective carbon nitride, indicating its higher photostability in hydrogen evolution experiments. However, FeS2 produces ammonium as a degradation product when synthesised from nitrogen-containing precursors. When made from nitrogen-free precursors, FeS2 together with photostable PTI releases little ammonia, making it a photostable, earth-abundant composite for photocatalytic hydrogen generation.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 3","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400343","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595691","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}

引用次数: 0

Aqueous Light-Harvesting Systems Constructed from Pillar[n]Arene-Based Supra-Amphiphiles 柱[n]芳烃基超两亲化合物制备的水相聚光系统

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-23 DOI: 10.1002/cptc.202400392

Xiaoman Dang, Qiaona Zhang, Fengyao Cui, Prof. Dr. Tangxin Xiao

引用次数: 0

BODIPY-Based Small-Molecule Photoacoustic Probes for Biomedical Imaging

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-17 DOI: 10.1002/cptc.202400335

Kaixuan Song, Hu Gao, Xiaoqing Wang, Zhipeng Liu

引用次数: 0

Photoelectrochemical Investigation of Hole Scavengers for Photocatalytic Hydrogen Evolution Reaction on Perovskite-Type Niobate Nanosheets

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-16 DOI: 10.1002/cptc.202400297

Bengisu Yilmaz, Uğur Ünal

引用次数: 0

Advances in Artificial Photosynthesis: The Role of Chalcogenides and Chalcogenide-Based Heterostructures 人工光合作用的进展：卤化铝和卤化铝基异质结构的作用

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-11 DOI: 10.1002/cptc.202400234

Ashmalina Rahman, Shaikh Parwaiz, Youngku Sohn, Mohammad Mansoob Khan

{"title":"Advances in Artificial Photosynthesis: The Role of Chalcogenides and Chalcogenide-Based Heterostructures","authors":"Ashmalina Rahman, Shaikh Parwaiz, Youngku Sohn, Mohammad Mansoob Khan","doi":"10.1002/cptc.202400234","DOIUrl":"https://doi.org/10.1002/cptc.202400234","url":null,"abstract":"Artificial photosynthesis, encompassing the photocatalytic generation of H2 and CO2 reduction innovations, seems to be a highly promising approach. This is due to its ability to efficiently transform CO2 into hydrocarbon fuel and valuable chemical products using solar energy as a direct energy source. This will simultaneously help to mitigate global warming and energy shortage issues. Chalcogenide-based semiconductors have recently gotten a lot of attention as an important area of research for photocatalytic H2 production and CO2 conversion, owing to their low band gap energy, suitable band structures, and a great photoresponsivity spectrum. Modifying chalcogenides into their heterostructures could be a great way to solve problems like photo corrosion and carrier recombination. Therefore, this review summarized a series of different modifications of chalcogenides and recent developments in their photocatalytic and photo electrocatalytic performance, particularly in H2 production and CO2 conversion. Lastly, we discussed the challenges, limitations, areas for development, and future prospects of chalcogenides and their heterostructures capable of utilizing visible light to produce H2 gas and reduce CO2.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 3","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143595060","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}

引用次数: 0

Charge State Tuning and Photochemical Stability of Au25(SR)18 Nanoclusters

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-12-10 DOI: 10.1002/cptc.202400236

Johanna A. de Jong, Mark S. Workentin, Mahdi Hesari

{"title":"Charge State Tuning and Photochemical Stability of Au25(SR)18 Nanoclusters","authors":"Johanna A. de Jong, Mark S. Workentin, Mahdi Hesari","doi":"10.1002/cptc.202400236","DOIUrl":"https://doi.org/10.1002/cptc.202400236","url":null,"abstract":"The photolysis of the gold nanoclusters Au25(SR)18z (R=C2H4Ph and C12H25, z=1−, 0 and 1+) NCs in halogenated solvents such as dichloromethane leads to changes in the charged states of the Au25(SR)18z observed using UV-Visible and 1H NMR spectroscopic techniques. Matrix-assisted laser desorption/ionization mass spectrometry results proved that during charge transformation from anion to neutral and eventually cation forms, the size of nanoclusters remains intact. Electrochemistry of Au25(SR)18 has enabled the monitoring of these changes by cyclic voltammetry, indicating decay in the redox peak current upon irradiation. In the absence of light and/or in a non-halogenated solvent, e. g., tetrahydrofuran, no substantial change in the photophysical signatures of Au25 nanoclusters was observed. These observations highlight the importance of selecting appropriate solvent(s) in the synthesis and photochemical studies of atomically precise metal nanoclusters and the possibility of using photochemistry in halogenated solvents to synthesize different charge states of atomically precise metal nanoclusters. Thus, other monodispersed molecule-like nanoclusters, with various sizes and charges, can be achieved via this photosynthetic protocol under controlled conditions, e. g., solvent, light, and photolysis duration.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"9 3","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594909","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}

引用次数: 0