Chemistry of Materials最新文献

{"title":"Two Nanoparticle Populations Simultaneously Directed Using Triptych Triblock Terpolymers","authors":"Mengxue Zhang,&nbsp;Xiaomeng Li,&nbsp;Chuanbing Tang and Morgan Stefik*,&nbsp;","doi":"10.1021/acs.chemmater.4c0152410.1021/acs.chemmater.4c01524","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01524https://doi.org/10.1021/acs.chemmater.4c01524","url":null,"abstract":"<p >Multicomponent nanocomposites are important for diverse fields spanning energy conversion to optoelectronics and catalysis. Polymer structure-directing agents typically direct the placement of hydrophilic nanoparticles (HNPs) using hydrophilic interactions; however, this approach is generally limited to random mixtures when combining two types of HNPs. A new approach is shown where two distinct intermolecular interaction modalities enable independent control of two, respectively, functionalized nanoparticle populations. Specifically, the orthogonal interactions of the hydrophilic-fluorophobic structure-directing agents enabled independent control of the placement of both HNPs and fluorophobic nanoparticles (FNPs). This dual-nanoparticle assembly was first examined using a diblock poly(hydrophilic-<i>b</i>-fluorophobic) structure-directing agents where achieving well-defined assemblies required &gt;32 wt % HNPs to preserve micelle templates. The addition of a glassy lipophilic block led to a triptych triblock poly(hydrophilic-<i>b</i>-lipophilic-<i>b</i>-fluorophobic) design that enabled vitrification of FNP-loaded micelles for robust dual-nanoparticle control with well-defined assemblies regardless of the FNP/HNP fractions. A novel micelle-chain morphology occurred with ≥ 89 wt % FNPs which may support unique transport applications. This micelle-chain morphology was associated with the depletion of chains at the core–corona interface, promoting micelle aggregation. Equilibration experiments were used to probe for dynamic exchange processes during various stages of processing from sequential solvent conditions. These mixing experiments identified that polymer chains and FNPs underwent dynamic exchange in acetone (plasticizer) but did not after transferring to water (nonplasticizer), thus confirming glassy kinetic entrapment at the final stage of processing. This collection of experiments highlights how triptych block polymers offer a new approach toward independent control over two types of nanoparticles.</p>","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":7.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142309869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical Instability of CsPbBr3 Nanocrystals and the Reversible Transformation between CsPbBr3 and Cs4PbBr6 Nanocrystals as Driven by Synthetic Precursors","authors":"Huan Tian,&nbsp;Yi Liu and Feng-Lei Jiang*,&nbsp;","doi":"10.1021/acs.chemmater.4c0201810.1021/acs.chemmater.4c02018","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02018https://doi.org/10.1021/acs.chemmater.4c02018","url":null,"abstract":"<p >Perovskite nanocrystals attract growing interest owing to their unique optoelectronic properties. However, their chemical stability is relatively poor due to their ionic nature. In this work, we found that inorganic cations (e.g., Cs⁺) and ligands (e.g., didodecyldimethylammonium bromide, DDAB), used in the synthesis of CsPbBr₃ nanocrystals (NCs) at ambient temperature, quickly converted CsPbBr₃ NCs to Cs₄PbBr₆ NCs during the synthesis or postsynthetic treatment. These cations (Cs⁺, DDA⁺) were involved in both the chemical composition and dissociation of CsPbBr₃ NCs. Nevertheless, DDA⁺ induced the generation of an impurity in addition to Cs₄PbBr₆ NCs due to its different nature from that of Cs⁺. The transformation process was observed by optical spectroscopy and transmission electron microscopy. The reverse transformation of Cs₄PbBr₆ NCs to CsPbBr₃ NCs can be carried out completely by adding sufficient PbBr₂ into Cs₄PbBr₆ NCs. Therefore, the forward and backward reactions were driven by Cs⁺ and Pb²⁺. With additional DDAB for passivation during the reverse transformation, the resulting product possessed a better photoluminescence quantum yield (PLQY, ∼90%) compared with that without the involvement of DDAB (∼69%). By considering the Cs₄PbBr₆ NCs as the Cs source, the reverse transformation can be analogized to the synthesis of CsPbBr₃ NCs, providing a possible strategy for synthesizing luminescent perovskite NCs at room temperature with theoretical stoichiometry.</p>","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":7.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twisted Acceptor Core Molecular Design with Phenoxazine and Phenothiazine Donors Enabled Yellow Thermally Activated Delayed Fluorescent Emitters/Sensitizers for Long-Lifetime Solution-Processed Organic Light-Emitting Diodes Exceeding 31% External Quantum Efficiency","authors":"Md Intekhab Alam, Mangey Ram Nagar, Jwo-Huei Jou, Sivakumar Vaidyanathan","doi":"10.1021/acs.chemmater.4c01001","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01001","url":null,"abstract":"Organic light-emitting diodes (OLEDs) with high external quantum efficiency and long operational lifetimes that have been solution-processed are still in their infancy. In this context, two new thermally activated delayed fluorescent (TADF) emitters, KCPOZ and KCPTZ, are designed using a new design strategy consisting of an interlocked unsymmetrical dual acceptor core for solution-processed yellow OLEDs. Unsymmetrical and twisted molecular structure aided twisted intramolecular charge transfer in their films. Narrow Δ<i>E</i>_ST in both the emitters enabled efficient triplet exciton population and fast reverse intersystem crossing to manufacture high-efficiency OLED devices. A doped (5% in CBP) OLED device based on KCPOZ showed the best performance between both. The 5.0 wt % KCPOZ-doped device exhibited a PE_max of 85.6 lm/W, CE_max of 95.2 cd/A, EQE_max of 31.5%, and <i>L</i>_max of 18,240 cd/m². Both emitters were also employed as sensitizers for TBRb, an orange TADF emitter, to improve the orange device performance. EQE_max increased from 5% to 20 and 18.0% when KCPOZ and KCPTZ concentrations climbed from 0 to 10%. At 100 cd/m², the KCPOZ-based device had an estimated half-lifetime of 19,844 h, while the KCPTZ-based device had a lifetime of 10,550 h. This work demonstrates using unconventional ways to design molecular core structures integrated with appropriate donors to enable high efficiency in the OLED device with a longer lifetime.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering a Surfactant Trap via Postassembly Modification of an Imine Cage","authors":"María Pérez-Ferreiro, Quinn M. Gallagher, Andrea B. León, Michael A. Webb, Alejandro Criado, Jesús Mosquera","doi":"10.1021/acs.chemmater.4c01808","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01808","url":null,"abstract":"Imine self-assembly stands as a potent strategy for the preparation of molecular organic cages. However, challenges persist, such as water insolubility and limited recognition properties due to constraints in the application of specific components during the self-assembly process. In this study, we addressed these limitations by initially employing a locking strategy, followed by a postassembly modification. This sequential approach enables precise control over both the solubility and host–guest properties of an imine-based cage. The resulting structure demonstrates water solubility and exhibits an exceptional capacity to selectively interact with anionic surfactants, inducing their precipitation. Remarkably, each cage precipitates 24 equiv of anionic surfactants even at concentrations much lower than the surfactant’s critical micelle concentration (CMC), ensuring their complete removal. Molecular simulations elucidate how anionic surfactants specifically interact with the cage to facilitate aggregation below the surfactant CMC and induce precipitation as a micellar cross-linker. This innovative class of cages paves the way for the advancement of materials tailored for environmental remediation.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges Reconciling Theory and Experiments in the Prediction of Lattice Thermal Conductivity: The Case of Cu-Based Sulvanites","authors":"Irene Caro-Campos,&nbsp;Marta María González-Barrios,&nbsp;Oscar J. Dura,&nbsp;Erik Fransson,&nbsp;Jose J. Plata,&nbsp;David Ávila,&nbsp;Javier Fdez Sanz,&nbsp;Jesús Prado-Gonjal and Antonio M. Márquez*,&nbsp;","doi":"10.1021/acs.chemmater.4c0134310.1021/acs.chemmater.4c01343","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01343https://doi.org/10.1021/acs.chemmater.4c01343","url":null,"abstract":"<p >The exploration of large chemical spaces in search of new thermoelectric materials requires the integration of experiments, theory, simulations, and data science. The development of high-throughput strategies that combine DFT calculations with machine learning has emerged as a powerful approach to discovering new materials. However, experimental validation is crucial to confirm the accuracy of these workflows. This validation becomes especially important in understanding the transport properties that govern the thermoelectric performance of materials since they are highly influenced by synthetic, processing, and operating conditions. In this work, we explore the thermal conductivity of Cu-based sulvanites by using a combination of theoretical and experimental methods. Previous discrepancies and significant variations in reported data for Cu₃VS₄ and Cu₃VSe₄ are explained using the Boltzmann Transport Equation for phonons and by synthesizing well-characterized defect-free samples. The use of machine learning approaches for extracting high-order force constants opens doors to charting the lattice thermal conductivity across the entire Cu-based sulvanite family─finding not only materials with κ_<i>l</i> values below 2 W m^–1 K^–1 at moderate temperatures but also rationalizing their thermal transport properties based on chemical composition.</p>","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":7.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.chemmater.4c01343","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twisted Acceptor Core Molecular Design with Phenoxazine and Phenothiazine Donors Enabled Yellow Thermally Activated Delayed Fluorescent Emitters/Sensitizers for Long-Lifetime Solution-Processed Organic Light-Emitting Diodes Exceeding 31% External Quantum Efficiency","authors":"Md Intekhab Alam,&nbsp;Mangey Ram Nagar,&nbsp;Jwo-Huei Jou and Sivakumar Vaidyanathan*,&nbsp;","doi":"10.1021/acs.chemmater.4c0100110.1021/acs.chemmater.4c01001","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01001https://doi.org/10.1021/acs.chemmater.4c01001","url":null,"abstract":"<p >Organic light-emitting diodes (OLEDs) with high external quantum efficiency and long operational lifetimes that have been solution-processed are still in their infancy. In this context, two new thermally activated delayed fluorescent (TADF) emitters, KCPOZ and KCPTZ, are designed using a new design strategy consisting of an interlocked unsymmetrical dual acceptor core for solution-processed yellow OLEDs. Unsymmetrical and twisted molecular structure aided twisted intramolecular charge transfer in their films. Narrow Δ<i>E</i>_ST in both the emitters enabled efficient triplet exciton population and fast reverse intersystem crossing to manufacture high-efficiency OLED devices. A doped (5% in CBP) OLED device based on KCPOZ showed the best performance between both. The 5.0 wt % KCPOZ-doped device exhibited a PE_max of 85.6 lm/W, CE_max of 95.2 cd/A, EQE_max of 31.5%, and <i>L</i>_max of 18,240 cd/m². Both emitters were also employed as sensitizers for TBRb, an orange TADF emitter, to improve the orange device performance. EQE_max increased from 5% to 20 and 18.0% when KCPOZ and KCPTZ concentrations climbed from 0 to 10%. At 100 cd/m², the KCPOZ-based device had an estimated half-lifetime of 19,844 h, while the KCPTZ-based device had a lifetime of 10,550 h. This work demonstrates using unconventional ways to design molecular core structures integrated with appropriate donors to enable high efficiency in the OLED device with a longer lifetime.</p>","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":7.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges Reconciling Theory and Experiments in the Prediction of Lattice Thermal Conductivity: The Case of Cu-Based Sulvanites","authors":"Irene Caro-Campos, Marta María González-Barrios, Oscar J. Dura, Erik Fransson, Jose J. Plata, David Ávila, Javier Fdez Sanz, Jesús Prado-Gonjal, Antonio M. Márquez","doi":"10.1021/acs.chemmater.4c01343","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01343","url":null,"abstract":"The exploration of large chemical spaces in search of new thermoelectric materials requires the integration of experiments, theory, simulations, and data science. The development of high-throughput strategies that combine DFT calculations with machine learning has emerged as a powerful approach to discovering new materials. However, experimental validation is crucial to confirm the accuracy of these workflows. This validation becomes especially important in understanding the transport properties that govern the thermoelectric performance of materials since they are highly influenced by synthetic, processing, and operating conditions. In this work, we explore the thermal conductivity of Cu-based sulvanites by using a combination of theoretical and experimental methods. Previous discrepancies and significant variations in reported data for Cu₃VS₄ and Cu₃VSe₄ are explained using the Boltzmann Transport Equation for phonons and by synthesizing well-characterized defect-free samples. The use of machine learning approaches for extracting high-order force constants opens doors to charting the lattice thermal conductivity across the entire Cu-based sulvanite family─finding not only materials with κ_<i>l</i> values below 2 W m^–1 K^–1 at moderate temperatures but also rationalizing their thermal transport properties based on chemical composition.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical Instability of CsPbBr3 Nanocrystals and the Reversible Transformation between CsPbBr3 and Cs4PbBr6 Nanocrystals as Driven by Synthetic Precursors","authors":"Huan Tian, Yi Liu, Feng-Lei Jiang","doi":"10.1021/acs.chemmater.4c02018","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c02018","url":null,"abstract":"Perovskite nanocrystals attract growing interest owing to their unique optoelectronic properties. However, their chemical stability is relatively poor due to their ionic nature. In this work, we found that inorganic cations (e.g., Cs⁺) and ligands (e.g., didodecyldimethylammonium bromide, DDAB), used in the synthesis of CsPbBr₃ nanocrystals (NCs) at ambient temperature, quickly converted CsPbBr₃ NCs to Cs₄PbBr₆ NCs during the synthesis or postsynthetic treatment. These cations (Cs⁺, DDA⁺) were involved in both the chemical composition and dissociation of CsPbBr₃ NCs. Nevertheless, DDA⁺ induced the generation of an impurity in addition to Cs₄PbBr₆ NCs due to its different nature from that of Cs⁺. The transformation process was observed by optical spectroscopy and transmission electron microscopy. The reverse transformation of Cs₄PbBr₆ NCs to CsPbBr₃ NCs can be carried out completely by adding sufficient PbBr₂ into Cs₄PbBr₆ NCs. Therefore, the forward and backward reactions were driven by Cs⁺ and Pb²⁺. With additional DDAB for passivation during the reverse transformation, the resulting product possessed a better photoluminescence quantum yield (PLQY, ∼90%) compared with that without the involvement of DDAB (∼69%). By considering the Cs₄PbBr₆ NCs as the Cs source, the reverse transformation can be analogized to the synthesis of CsPbBr₃ NCs, providing a possible strategy for synthesizing luminescent perovskite NCs at room temperature with theoretical stoichiometry.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering a Surfactant Trap via Postassembly Modification of an Imine Cage","authors":"María Pérez-Ferreiro,&nbsp;Quinn M. Gallagher,&nbsp;Andrea B. León,&nbsp;Michael A. Webb*,&nbsp;Alejandro Criado* and Jesús Mosquera*,&nbsp;","doi":"10.1021/acs.chemmater.4c0180810.1021/acs.chemmater.4c01808","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01808https://doi.org/10.1021/acs.chemmater.4c01808","url":null,"abstract":"<p >Imine self-assembly stands as a potent strategy for the preparation of molecular organic cages. However, challenges persist, such as water insolubility and limited recognition properties due to constraints in the application of specific components during the self-assembly process. In this study, we addressed these limitations by initially employing a locking strategy, followed by a postassembly modification. This sequential approach enables precise control over both the solubility and host–guest properties of an imine-based cage. The resulting structure demonstrates water solubility and exhibits an exceptional capacity to selectively interact with anionic surfactants, inducing their precipitation. Remarkably, each cage precipitates 24 equiv of anionic surfactants even at concentrations much lower than the surfactant’s critical micelle concentration (CMC), ensuring their complete removal. Molecular simulations elucidate how anionic surfactants specifically interact with the cage to facilitate aggregation below the surfactant CMC and induce precipitation as a micellar cross-linker. This innovative class of cages paves the way for the advancement of materials tailored for environmental remediation.</p>","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":7.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.chemmater.4c01808","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142310048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FeSi4P4 and CoSi3P3: Hidden Gems of Ternary Tetrel Pnictides with Outstanding Nonlinear Optical Properties","authors":"Ernesto Soto, Shannon J. Lee, Andrew P. Porter, Gayatri Viswanathan, Georgiy Akopov, Nethmi Hewage, Kui Wu, Victor Trinquet, Guillaume Brunin, Geoffroy Hautier, Gian-Marco Rignanese, Aaron J. Rossini, Kirill Kovnir","doi":"10.1021/acs.chemmater.4c01688","DOIUrl":"https://doi.org/10.1021/acs.chemmater.4c01688","url":null,"abstract":"Metal silicon phosphides have shown promise as nonlinear optical materials. To be practically useful and cheap, earth-abundant 3<i>d</i> transition metals are preferred over their scarcer and more expensive 4d and 5d counterparts. We developed a synthetic method to produce polycrystalline bulk powders and millimeter-sized single crystals of ternary compounds FeSi₄P₄ and CoSi₃P₃. Both studied compounds have noncentrosymmetric and chiral crystal structures with ordered Si/P arrangements as was confirmed by single-crystal X-ray diffraction and solid-state NMR. Despite the presence of the transition metal, FeSi₄P₄ and CoSi₃P₃ are semiconductors with direct band gaps of 1.3 and 1.6 eV, respectively, indicating low-spin d⁶ electronic configuration for octahedral Fe²⁺ and Co³⁺. Relative to reported sulfide materials, FeSi₄P₄ and CoSi₃P₃ small band gap semiconductors demonstrate an outstanding combination of second-harmonic generation (SHG) activity and laser damage threshold (LDT). Both studied materials are phase-matchable with a 2.09 μm laser and not only exhibit 2.5–3.0 times stronger SHG signal than that of the state-of-the-art AgGaS₂ standard but also demonstrate an LDT response of 2.3–2.5 times higher than that of AgGaS₂ (at 1.09 μm laser with a pulse width of 10 ns)─which is unprecedented for small band gap semiconductors.","PeriodicalId":33,"journal":{"name":"Chemistry of Materials","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142123965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}