ACS Materials Au最新文献_第7页

Extracellular Poly(hydroxybutyrate) Bioplastic Production Using Surface Display Techniques 利用表面显示技术生产细胞外聚羟丁酸生物塑料

ACS Materials Au Pub Date : 2023-11-06 DOI: 10.1021/acsmaterialsau.3c00059

Kevin Beaver, Ashwini Dantanarayana, Willisa Liou, Markus Babst and Shelley D. Minteer*,

{"title":"Extracellular Poly(hydroxybutyrate) Bioplastic Production Using Surface Display Techniques","authors":"Kevin Beaver, Ashwini Dantanarayana, Willisa Liou, Markus Babst and Shelley D. Minteer*, ","doi":"10.1021/acsmaterialsau.3c00059","DOIUrl":"10.1021/acsmaterialsau.3c00059","url":null,"abstract":"Poly(hydroxybutyrate) is a biocompatible, biodegradable polyester synthesized naturally in a variety of microbial species. A greener alternative to petroleum-based plastics and sought after for biomedical applications, poly(hydroxybutyrate) has failed to break through as a leading material in the plastic industry due to its high cost of production. Specifically, the extraction of this material from within bacterial cells requires lysis of cells, which takes time, uses harsh chemicals, and starts the process again with growing new living cells. Recently, surface display of enzymes on bacterial membranes has become an emerging technique for extracellular biocatalysis. In this work, a fusion protein lpp-ompA-phaC was expressed in Escherichia coli to display the enzyme poly(hydroxyalkanoate) synthase on the cell surface. The resulting poly(hydroxybutyrate) product was chemically characterized by nuclear magnetic resonance and infrared spectroscopy. Finally, the extracellular synthesis of the bioplastic granules was demonstrated qualitatively via microscopy and quantitatively by flow cytometry. The results of this work are the first demonstration of extracellular synthesis of poly(hydroxybutyrate), showing promise for continuous and scalable synthesis of materials using surface display.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"4 2","pages":"174–178"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135590004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multijet Gold Nanoparticle Inks for Additive Manufacturing of Printed and Wearable Electronics 用于印刷和可穿戴电子设备增材制造的多喷射金纳米粒子油墨

ACS Materials Au Pub Date : 2023-11-02 DOI: 10.1021/acsmaterialsau.3c00058

Tony Valayil Varghese*, Josh Eixenberger, Fereshteh Rajabi-Kouchi, Maryna Lazouskaya, Cadré Francis, Hailey Burgoyne, Katelyn Wada, Harish Subbaraman and David Estrada*,

{"title":"Multijet Gold Nanoparticle Inks for Additive Manufacturing of Printed and Wearable Electronics","authors":"Tony Valayil Varghese*, Josh Eixenberger, Fereshteh Rajabi-Kouchi, Maryna Lazouskaya, Cadré Francis, Hailey Burgoyne, Katelyn Wada, Harish Subbaraman and David Estrada*, ","doi":"10.1021/acsmaterialsau.3c00058","DOIUrl":"10.1021/acsmaterialsau.3c00058","url":null,"abstract":"Conductive and biofriendly gold nanomaterial inks are highly desirable for printed electronics, biosensors, wearable electronics, and electrochemical sensor applications. Here, we demonstrate the scalable synthesis of stable gold nanoparticle inks with low-temperature sintering using simple chemical processing steps. Multiprinter compatible aqueous gold nanomaterial inks were formulated, achieving resistivity as low as ∼10–6 Ω m for 400 nm thick films sintered at 250 °C. Printed lines with a resolution of <20 μm and minimal overspray were obtained using an aerosol jet printer. The resistivity of the printed patterns reached ∼9.59 ± 1.2 × 10–8 Ω m after sintering at 400 °C for 45 min. Our aqueous-formulated gold nanomaterial inks are also compatible with inkjet printing, extending the design space and manufacturability of printed and flexible electronics where metal work functions and chemically inert films are important for device applications.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"4 1","pages":"65–73"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135876162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

UV Light Degradation of Polylactic Acid Kickstarts Enzymatic Hydrolysis 紫外线降解聚乳酸启动酶水解作用

ACS Materials Au Pub Date : 2023-11-02 DOI: 10.1021/acsmaterialsau.3c00065

Margaret H. Brown, Thomas D. Badzinski, Elizabeth Pardoe, Molly Ehlebracht and Melissa A. Maurer-Jones*,

{"title":"UV Light Degradation of Polylactic Acid Kickstarts Enzymatic Hydrolysis","authors":"Margaret H. Brown, Thomas D. Badzinski, Elizabeth Pardoe, Molly Ehlebracht and Melissa A. Maurer-Jones*, ","doi":"10.1021/acsmaterialsau.3c00065","DOIUrl":"10.1021/acsmaterialsau.3c00065","url":null,"abstract":"Polylactic acid (PLA) and bioplastics alike have a designed degradability to avoid the environmental buildup that petroplastics have created. Yet, this designed biotic-degradation has typically been characterized in ideal conditions. This study seeks to relate the abiotic to the biotic degradation of PLA to accurately represent the degradation pathways bioplastics will encounter, supposing their improper disposal in the environment. Enzymatic hydrolysis was used to study the biodegradation of PLA with varying stages of photoaging. Utilizing a fluorescent tag to follow enzyme hydrolysis, it was determined that increasing the amount of irradiation yielded greater amounts of total enzymatic hydrolysis by proteinase K after 8 h of enzyme incubation. While photoaging of the polymers causes minimal changes in chemistry and increasing amounts of crystallinity, the trends in biotic degradation appear to primarily be driven by photoinduced reduction in molecular weight. The relationship between photoaging and enzyme hydrolysis appears to be independent of enzyme type, though commercial product degradation may be impacted by the presence of additives. Overall, this work reveals the importance of characterizing biodegradation with relevant samples that ultimately can inform optimization of production and disposal.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"4 1","pages":"92–98"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00065","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135933699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Photothermal Property of NDI-Based Conjugated Polymers by Copolymerization with a Thiadiazolobenzotriazole Unit 通过与噻二唑-苯并三唑单元共聚增强基于 NDI 的共轭聚合物的光热特性

ACS Materials Au Pub Date : 2023-10-26 DOI: 10.1021/acsmaterialsau.3c00077

Mingqian Wang, Chia-Yang Lin, Yoshimitsu Sagara and Tsuyoshi Michinobu*,

{"title":"Enhanced Photothermal Property of NDI-Based Conjugated Polymers by Copolymerization with a Thiadiazolobenzotriazole Unit","authors":"Mingqian Wang, Chia-Yang Lin, Yoshimitsu Sagara and Tsuyoshi Michinobu*, ","doi":"10.1021/acsmaterialsau.3c00077","DOIUrl":"10.1021/acsmaterialsau.3c00077","url":null,"abstract":"Solar steam generation (SSG) is a promising photothermal technology to solve the global water storage issue. The potential of π-conjugated polymers as photothermal materials is significant, because their absorption range can be customized through molecular design. In this study, naphthalenediimide (NDI) and thiadiazolobenzotriazole (TBZ) were employed as bifunctional monomers to produce conjugated polymers. There are two types of polymers, P1 and P2. P1 is based on NDI, while P2 is a copolymer of NDI and TBZ in a ratio of 9:1. Both polymers had high molecular weights and sufficient thermal stability. UV–vis–near-infrared (NIR) absorption spectra revealed that both polymers have large extinction coefficients ascribed to the NDI and TBZ chromophores. Notably, the absorption spectrum of P2 exhibited a significant red shift compared to P1, resulting in a narrow optical bandgap and absorption in the NIR range. This result suggested that P2 has a higher light absorption than P1. Photoluminescence (PL) spectra were measured to elucidate the conversion of the absorbed light into thermal energy. It was found that P2 has a reduced fluorescence quantum yield as a result of the TBZ unit, signifying a proficient conversion of the photothermal energy. Based on the results, it appears that the P2 film has a greater photothermal property compared to that of the P1 film. The surface temperature of the P2 film reached approximately 50 °C under the investigated conditions. In addition, copolymer P2 exhibited an impressive SSG efficiency of 72.4% under 1 sun (1000 W/m2) irradiation. All the results suggested that narrow bandgap conjugated polymers containing the TBZ unit are highly effective materials for achieving optimal performance in SSGs.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"4 1","pages":"82–91"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136381478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Voltage-Controlled ON–OFF-Switching of Magnetoresistance in FeOx/Fe/Au Aerogel Networks 氧化铁/铁/金气凝胶网络中磁阻的电压控制开-关切换

ACS Materials Au Pub Date : 2023-10-18 DOI: 10.1021/acsmaterialsau.3c00045

Martin Nichterwitz, Karl Hiekel, Daniel Wolf, Alexander Eychmüller and Karin Leistner*,

{"title":"Voltage-Controlled ON–OFF-Switching of Magnetoresistance in FeOx/Fe/Au Aerogel Networks","authors":"Martin Nichterwitz, Karl Hiekel, Daniel Wolf, Alexander Eychmüller and Karin Leistner*, ","doi":"10.1021/acsmaterialsau.3c00045","DOIUrl":"10.1021/acsmaterialsau.3c00045","url":null,"abstract":"Voltage control of magnetoresistance (MR) in nanoscale three-dimensional (3D) geometries is interesting from a fundamental point of view and a promising route toward novel sensors and energy-efficient computing schemes. Magneto-ionic mechanisms are favorable for low-voltage control of magnetism and room-temperature operation, but magneto-ionic control of MR has been studied only for planar geometries so far. We synthesize a 3D nanomaterial with magneto-ionic functionality by electrodepositing an iron hydroxide/iron coating on a porous nanoscale gold network (aerogel). To enable maximum magneto-ionic ON–OFF-switching, the thickness of the coating is adjusted to a few nanometers by a self-terminating electrodeposition process. In situ magnetotransport measurements during electrolytic gating of these nanostructures reveal large reversible changes in MR, including ON–OFF-switching of MR, with a small applied voltage difference (1.72 V). This effect is related to the electrochemical switching between a ferromagnetic iron shell/gold core nanostructure (negative MR at the reduction voltage) and an iron oxide shell/gold core nanostructure (negligible MR at the oxidation voltage).","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"4 1","pages":"55–64"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135825272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Efficiency Multilevel Volume Diffraction Gratings inside Silicon 硅内部高效多层体衍射光栅

ACS Materials Au Pub Date : 2023-10-13 DOI: 10.1021/acsmaterialsau.3c00052

Mehmet Bütün, Sueda Saylan, Rana Asgari Sabet and Onur Tokel*,

{"title":"High-Efficiency Multilevel Volume Diffraction Gratings inside Silicon","authors":"Mehmet Bütün, Sueda Saylan, Rana Asgari Sabet and Onur Tokel*, ","doi":"10.1021/acsmaterialsau.3c00052","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.3c00052","url":null,"abstract":"Silicon (Si)-based integrated photonics is considered to play a pivotal role in multiple emerging technologies, including telecommunications, quantum computing, and lab-chip systems. Diverse functionalities are either implemented on the wafer surface (“on-chip”) or recently within the wafer (“in-chip”) using laser lithography. However, the emerging depth degree of freedom has been exploited only for single-level devices in Si. Thus, monolithic and multilevel discrete functionality is missing within the bulk. Here, we report the creation of multilevel, high-efficiency diffraction gratings in Si using three-dimensional (3D) nonlinear laser lithography. To boost device performance within a given volume, we introduce the concept of effective field enhancement at half the Talbot distance, which exploits self-imaging onto discrete levels over an optical lattice. The novel approach enables multilevel gratings in Si with a record efficiency of 53%, measured at 1550 nm. Furthermore, we predict a diffraction efficiency approaching 100%, simply by increasing the number of levels. Such volumetric Si-photonic devices represent a significant advance toward 3D-integrated monolithic photonic chips.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"3 6","pages":"727–733"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72200925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cellular Senescence Program is Sensitive to Physical Differences in Polymeric Tissue Scaffolds 细胞衰老程序对聚合物组织支架的物理差异很敏感

ACS Materials Au Pub Date : 2023-10-06 DOI: 10.1021/acsmaterialsau.3c00057

Parul Yadav, Rahul Shah, Anindo Roy, Sibani Jani, Kaushik Chatterjee* and Deepak Kumar Saini*,

{"title":"Cellular Senescence Program is Sensitive to Physical Differences in Polymeric Tissue Scaffolds","authors":"Parul Yadav, Rahul Shah, Anindo Roy, Sibani Jani, Kaushik Chatterjee* and Deepak Kumar Saini*, ","doi":"10.1021/acsmaterialsau.3c00057","DOIUrl":"10.1021/acsmaterialsau.3c00057","url":null,"abstract":"A typical cellular senescence program involves exposing cells to DNA-damaging agents such as ionization radiation or chemotherapeutic drugs, which cause multipronged changes, including increased cell size and volume, the onset of enhanced oxidative stress, and inflammation. In the present study, we examined if the senescence onset decision is sensitive to the design, porosity, and architecture of the substrate. To address this, we generated a library of polymeric scaffolds widely used in tissue engineering of varied stiffness, architecture, and porosity. Using irradiated A549 lung cancer cells, we examined the differences between cellular responses in these 3D scaffold systems and observed that senescence onset is equally diminished. When compared to the two-dimensional (2D) culture formats, there were profound changes in cell size and senescence induction in three-dimensional (3D) scaffolds. We further establish that these observed differences in the senescence state can be attributed to the altered cell spreading and cellular interactions on these substrates. This study elucidates the role of scaffold architecture in the cellular senescence program.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"4 1","pages":"35–44"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135351210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase Chemistry for Hydration Sensitive (De)intercalation of Lithium Aluminum Layered Double Hydroxide Chlorides 锂铝层状双氢氧化物氯化物水合敏感（脱）插层的相化学反应

ACS Materials Au Pub Date : 2023-10-06 DOI: 10.1021/acsmaterialsau.3c00063

Dongdong Li*, Ning Zhang, Dandan Gao, Ziyu Zhuang and Dewen Zeng,

{"title":"Phase Chemistry for Hydration Sensitive (De)intercalation of Lithium Aluminum Layered Double Hydroxide Chlorides","authors":"Dongdong Li*, Ning Zhang, Dandan Gao, Ziyu Zhuang and Dewen Zeng, ","doi":"10.1021/acsmaterialsau.3c00063","DOIUrl":"10.1021/acsmaterialsau.3c00063","url":null,"abstract":"Lithium aluminum layered double hydroxide chlorides (LADH-Cl) have been widely used for lithium extraction from brine. Elevation of the performances of LADH-Cl sorbents urgently requires knowledge of the composition–structure–property relationship of LADH-Cl in lithium extraction applications, but these are still unclear. Herein, combining the phase equilibrium experiments, advanced solid characterization methods, and theoretical calculations, we constructed a cyclic work diagram of LADH-Cl for lithium capture from aqueous solution, where the reversible (de)hydration and (de)intercalation induced phase evolution of LADH-Cl dominates the apparent lithium “adsorption–desorption” behavior. It is found that the real active ingredient in LADH-Cl type lithium sorbents is a dihydrated LADH-Cl with an Al:Li molar ratio varying from 2 to 3. This reversible process indicates an ultimate reversible lithium (de)intercalation capacity of ∼10 mg of Li per g of LADH-Cl. Excessive lithium deintercalation results in the phase structure collapse of dihydrated LADH-Cl to form gibbsite. When interacting with a concentrated LiCl aqueous solution, gibbsite is easily converted into lithium saturated intercalated LADH-Cl phases. By further hydration with a diluted LiCl aqueous solution, this phase again converts to the active dihydrated LADH-Cl. In the whole cyclic progress, lithium ions thermodynamically favor staying in the Al–OH octahedral cavities, but the (de)intercalation of lithium has kinetic factors deriving from the variation of the Al–OH hydroxyl orientation. The present results provide fundamental knowledge for the rational design and application of LADH-Cl type lithium sorbents.","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"4 1","pages":"45–54"},"PeriodicalIF":0.0,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmaterialsau.3c00063","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135347859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Going against the Grain: Atomistic Modeling of Grain Boundaries in Solid Electrolytes for Solid-State Batteries 逆流而上：固态电池固体电解质中晶界的原子建模

ACS Materials Au Pub Date : 2023-10-05 DOI: 10.1021/acsmaterialsau.3c00064

James A. Dawson*,

引用次数: 0

Photoinduced Solid–Liquid Phase Transition and Energy Storage Enabled by the Design of Linked Double Photoswitches 设计联动双光电开关实现光诱导固液相变和能量存储

ACS Materials Au Pub Date : 2023-09-26 DOI: 10.1021/acsmaterialsau.3c00069

Alejandra Gonzalez, Qianfeng Qiu, Junichi Usuba, Joshua Wan and Grace G. D. Han*,

引用次数: 0