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ACS Applied Materials & Interfaces

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https://read.qxmd.com/read/30779876/polyelectrolyte-mediated-nontoxic-aggaxin1-xs2-qds-low-density-lipoprotein-nanoprobe-for-selective-3d-fluorescence-imaging-of-cancer-stem-cells
#1
Jiangluqi Song, Yan Zhang, Yiwen Dai, Jinhang Hu, Lixin Zhu, XiaoLiang Xu, Yue Yu, Huan Li, Bo Yao, Huixin Zhou
Cancer stem cells, which are a population of cancer cells sharing common properties as normal stem cells, have strong self-renewal ability and multi-lineage differentiation potential to trigger tumor proliferation, metastases and recurrence. From this, targeted therapy for cancer stem cells may be one of the most promising strategies for comprehensive treatment of tumors in the future. We design a facile approach to establish the colon cancer stem cells-selective fluorescent probe based on the low-density lipoprotein (LDL) and the novel AgGaxIn(1-x)S2 quantum dots (AGIS QDs)...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30779548/stretchable-graphene-pressure-sensors-with-shar-pei-like-hierarchical-wrinkles-for-collision-aware-surgical-robotics
#2
Ting-Hsiang Chang, Yuan Tian, Changsheng Li, Xiaoyi Gu, Kerui Li, Haitao Yang, Parita Sanghani, Chwee Ming Lim, Hongliang Ren, Po-Yen Chen
Stretchable skin-like pressure sensing with minimized and distinguishable strain-induced interference is essential for the development of collision-aware surgical robotics to improve the safety and efficiency of minimally invasive surgery in a confined space. Inspired by the multi-dimensional wrinkles of Shar-Pei dog's skin for tactile sensing, we developed a stretchable pressure sensor consisting of reduced graphene oxide (rGO) electrodes with biomimetic topographies to improve the robot-tissue collision detections...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777752/doping-as-strategy-to-tune-color-of-2d-colloidal-nanoplatelets
#3
Marion Dufour, Eva Izquierdo, Clément Livache, Bertille Martinez, Mathieu G Silly, Thomas Pons, Emmanuel Lhuillier, Christophe Delerue, Sandrine Ithurria
Among colloidal nanocrystals, 2D nanoplatelets (NPL) made of II-VI compounds, appear as a special class of emitters with especially narrow photoluminescence signal. However the PL signal in the case of NPL is only tunable by discrete step. Here we demonstrate that doping is a viable path to finely tune the color of this NPL from green to red, making them extremely interesting as phosphor for wide gamut display. In addition using a combination of luminescence spectroscopy, tight binding simulation, transport and photoemission, we provide a consistent picture for the Ag+ doped CdSe NPL...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777750/ecofriendly-and-efficient-luminescent-solar-concentrators-based-on-fluorescent-proteins
#4
Sadra Sadeghi, Rustamzhon Melikov, Houman Bahmani Jalali, Onuralp Karatum, Shashi Srivastava, Deniz Conkar, Elif Nur Firat Karalar, Sedat Nizamoğlu
In recent years, luminescent solar concentrators (LSCs) have received renewed attention as a versatile platform for large-area, high-efficiency and low-cost solar energy harvesting. So far, artificial or engineered optical materials, such as rare-earth ions, organic dyes and colloidal quantum dots (QDs) have been incorporated into LSCs. Incorporation of non-toxic materials into efficient device architectures is critical for environmental sustainability and clean energy production. Here, we demonstrated LSCs based on fluorescent proteins, which are biologically-produced, ecofriendly and edible luminescent biomaterials along with exceptional optical properties...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777748/functionalization-of-silk-fibroin-electrospun-scaffolds-via-bmsc-affinity-peptide-grafting-through-oxidative-self-polymerization-of-dopamine-for-bone-regeneration
#5
Jiannan Wu, Lingyan Cao, Yang Liu, Ao Zheng, Delong Jiao, Deliang Zeng, Xiao Wang, David L Kaplan, Xinquan Jiang
Electrospun scaffolds have been broadly studied to enhance bone regeneration because of the ability to simulate the structure and biological functions of the extracellular matrix. Polydopamine (PDA) is used to coat various surfaces at a slightly basic pH (8-8.5) and spontaneously reacts with nucleophilic functional groups. It is suitable for surface modifications of scaffolds correlated with bone formation. E7 is a newly discovered peptide with specific affinity for bone marrow mesenchymal stem cells (BMSCs)...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777747/chemical-prelithiation-of-negative-electrodes-in-ambient-air-for-advanced-lithium-ion-batteries
#6
Gongwei Wang, Feifei Li, Dan Liu, Dong Zheng, Yang Luo, Deyu Qu, Tianyao Ding, Deyang Qu
This study reports an ambient-air tolerant approach for negative electrode prelithiation by using 1 M lithium-biphenyl (Li-Bp) / tetrahydrofuran (THF) solution as the prelithiation reagent. Key to this strategy are the relatively stable nature of 1 M Li-Bp/THF in ambient air and the unique electrochemical behavior of Bp in ether and carbonate solvents. With its low redox potential of 0.41 V vs. Li/Li+, Li-Bp can prelithiate various active materials with high efficacy. The successful prelithiation of a phosphrous / carbon composite electrode and the notable improvement in its initial coulombic efficiency (CE) demonstrates the practicality of this strategy...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777746/constructing-a-green-light-photodetector-on-inorganic-organic-semiconductor-homogeneous-hybrid-nanowire-arrays-with-remarkably-enhanced-photoelectric-response
#7
Haowei Lin, Kai Chen, Mingke Li, Beibei Ji, Yaohui Jia, Xinyu Liu, Jinling Li, Weiqiang Song, Chunlong Guan
We demonstrate that a novel photodetector is constructed by CdS/PPV (poly(p-phenylene vinylene)) homogeneous hybrid nanowire arrays via a simple template-assisted electrochemical co-deposition approach. Owing to the well-matched energy levels between CdS and PPV, the recombination of photogenerated electrons and holes in CdS/PPV hybrid nanowire arrays is greatly inhibited. It is found that the homogeneous hybrid nanowire arrays exhibit remarkably enhanced photoelectric response and the ON/OFF ratio by 17 times compared to individual CdS component...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777744/integrative-bioinspired-surface-with-wettable-patterns-and-gradient-for-enhancement-of-fog-collection
#8
Yan Xing, Weifeng Shang, Qianqian Wang, Shile Feng, Yongping Hou, Yongmei Zheng
A novel kind of integrative bioinspired surface with wettable patterns and gradient is proposed for enhancement of fog collection via a novel anodic oxidation strategy. Such surface can not only improve the fog droplet capture performance effectively owing to the unique wettable patterns but also accelerate the surface regeneration by taking full advantage of the cooperation of multi-driving forces, leading to a further fog collection enhancement.
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777743/biomineralization-synthesis-of-cobalt-nanozyme-in-sp94-ferritin-nanocage-for-prognostic-diagnosis-of-hepatocellular-carcinoma
#9
Bing Jiang, Liang Yan, Jianlin Zhang, Meng Zhou, Guizhi Shi, Xiuyun Tian, Kelong Fan, Chunyi Hao, Xiyun Yan
Nanomaterials with intrinsic enzyme-like activities (nanozymes), have emerged as promising agents for cancer theranostics strategies. However, size controllable synthesis of nanozymes and their targeting modifications are still challenging. Here, we report a monodispersed ferritin-based cobalt nanozyme (HccFn(Co3O4)) that specifically targets and visualizes clinical hepatocellular carcinoma (HCC) tissues. The cobalt nanozyme is biomimetically synthesized within the protein shell of HCC targeted ferritin (HccFn) nanocage, which is enabled by the display of HCC cell-specific peptide SP94 on the surface of ferritin through genetic engineering approach...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777742/constructing-long-range-transfer-pathways-with-ordered-acid-base-pairs-for-highly-enhanced-proton-conduction
#10
Yarong Liu, Wenjia Wu, Ping Li, Jianlong Lin, Zhihao Yang, Jingtao Wang
Acid-base pairs hold great superiority in creating proton defects and facilitating proton transfer with less or no water. However, the existing acid-base complexes failing in assembling into ordered acid-base pairs and thus cannot always take full advantage of acid-base synergetic effect. Herein, polymer quantum dots (PQDs) with inherent ordered acid-base pairs are utilized and anchored on dopamine coated graphene oxide (DGO), and thus forming into long-range conducting pathways. The resultant building blocks (nPGO) are integrated in sulfonated poly(ether ether ketone) matrix to fabricate composite membrane...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777429/cyano-substituted-head-to-head-polythiophenes-enabling-high-performance-n-type-organic-thin-film-transistors
#11
Hang Wang, Jun Huang, Mohammad Afsar Uddin, Bin Liu, Peng Chen, Shengbin Shi, Yumin Tang, Guichuan Xing, Shiming Zhang, Han Young Woo, Han Guo, Xugang Guo
Polythiophenes, built on the electron-rich thiophene unit, typically possess high-lying energy levels of the lowest unoccupied molecular orbitals (LUMOs) and show hole-transporting properties. In this study, we develop a series of n-type polythiophenes, P1-P3, based on head-to-head linked 3,3'-dialkoxy-4,4'-dicyano-2,2'-bithiophene (BTCNOR) with distinct side chain. The BTCNOR unit shows not only highly planar backbone conformation enabled by the intramolecular non-covalent sulfur∙∙∙oxygen interaction, but also significantly suppressed LUMO level attributed to the cyano-substitution...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777426/control-of-crystallite-orientation-in-diketopyrrolopyrrole-based-semiconducting-polymers-via-the-tuning-of-intermolecular-interactions
#12
Sung Y Son, Gang-Young Lee, Sangwon Kim, Won-Tae Park, Sang Ah Park, Yong-Young Noh, Taiho Park
Considerable previous studies have focused on the notion that semiconducting polymers with edge-on dominant orientation are advantageous for horizontal charge transport while polymers with face-on dominant orientation are advantageous for vertical charge transport, since the crystallite orientation determines the π-π stacking direction, which in turn affects the interchain charge transport direction. Here, we report that the crystallite orientation is dependent on the intermolecular interactions in the semiconducting polymer...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777424/the-role-of-stabilizing-surfactant-on-capacitance-charge-and-ion-transport-in-organic-nanoparticle-based-electronic-devices
#13
Mohsen Ameri, Mohammed Al-Mudhaffer, Furqan Almyahi, Georgia Fardell, Melissa Marks, Alaa Al-Ahmad, Adam Fahy, Thomas Andersen, Daniel C Elkington, Krishna Feron, Michael Dickinson, Feridoun Samavat, Paul C Dastoor, Matthew James Griffith
Deposition of functionalized nanoparticles onto solid surfaces has created a new revolution in electronic devices. Surface adsorbates such as ionic surfactants or additives are often used to stabilize such nanoparticle suspensions, however, little is presently known about the influence of such surfactants and additives on specific electronic and chemical functionality of nanoparticulate electronic devices. This work combines experimental measurements and theoretical models to probe the role of an ionic surfactant on the fundamental physical chemistry and electronic charge carrier behavior of photodiode devices prepared using multicomponent organic electronic nanoparticles...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777421/steric-switching-for-thermally-activated-delayed-fluorescence-by-controlling-the-dihedral-angles-between-donor-and-acceptor-in-organoboron-emitters
#14
Tien-Lin Wu, Shih-Han Lo, Yu-Che Chang, Min-Jie Huang, Chien-Hong Cheng
Five emitters CzAZB, tBuCzAZB, tmCzAZB, dmAcAZB and PxzAZB based on dibenzo-1,4-azaborine as the electron acceptor and two identical amine groups as the donors were designed and synthesized. The dihedral angles between the planes of dibenzo-1,4-azaborine acceptor and amine-based donors greatly affect the thermally activated delayed fluorescence (TADF) property of these materials. A simple concept "steric switching" is introduced to predict whether the emitter possesses TADF property. CzAZB and tBuCzAZB, with very high photoluminescence quantum yields (PLQYs), but small dihedral angle, do not show TADF...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30777420/dynamic-diffractive-patterns-in-helix-inverting-cholesteric-liquid-crystals
#15
Alexander Ryabchun, Dmitry Yakovlev, Alexey Bobrovsky, Nathalie Katsonis
The future of adaptive materials will rely on efficient transducing molecular motion across increasing length scales, up to the macroscopic and functional level. In this context, liquid crystals have emerged as a promising amplification medium, in view their long range order and high sensitivity to external stimuli, and in particular chiral liquid crystals have demonstrated widely tunable optical properties and invertible chirality. Here, we demonstrate that by applying weak electric fields, regular, periodic and light-tunable patterns can be formed spontaneously in cholesteric liquid crystal...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30776891/a-facile-method-to-prepare-the-novel-biological-hkust-1-cmcs-with-macroscopic-shape-control-for-the-long-acting-and-sustained-release
#16
Guohuan Huang, Jinli Chen, Xiuzhen Tang, Dingkang Xiong, Ziying Liu, Jia Wu, Wei-Yin Sun, Baofeng Lin
We have developed a green and versatile method to prepare hierarchically porous Cu3(BTC)2@carboxymethyl chitosan (HKUST-1@CMCS) with the macroscopic-shape control and designable performance via the cross-linking of Cu(II) ions with CMCS. Furthermore, AFM, SEM, PXRD, BET and XPS analyses showed that the morphology of HKUST-1 could be controlled and changed by tailoring the surface roughness (Rq) of polymer matrix. The matrix surface Rq for the ball-like, fiber-like and membrane-like composites were 887, 88.4 and 18...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30776888/a-targeted-and-multifunctional-technology-for-identification-between-hepatocellular-carcinoma-and-liver-cirrhosis
#17
Han Deng, Wenting Shang, Guanhua Lu, Pengyu Guo, Ting Ai, Chihua Fang, Jie Tian
Continuously updated diagnostic methods and advanced imaging methods have led to an increase in the early detection rate of small liver cancer,however, even with current diagnosis methods, it is still challenging to accurately judge a nodule with a diameter less than 2 cm whether it is hepatocellular carcinoma or liver cirrhosis. To solve this issue, a new technology is needed to distinguish above two kinds of liver nodules. There is an emerging imaging method that improves tissue resolution and sensitivity to detect micro-nodules with diameters less than 2 cm...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30776887/the-preparation-of-graphene-aerogel-with-high-mechanical-stability-and-microwave-absorption-ability-via-combining-surface-support-of-metallic-cnts-and-interfacial-cross-linking-by-magnetic-nanoparticles
#18
Yan Qin, Yan Zhang, Na Qi, Qiaozhi Wang, Xuejie Zhang, Ying Li
The preparation of graphene aerogel by hydrothermal reduction or chemical reduction has been one of the hot topics of research. But in the process of assembly, the random weak connection of GO flakes will lead to irreversible deformation under compression, the mechanical stability of aerogel based on graphene is one of its drawbacks hard to overcome. Here, a novel method to prepare graphene aerogel with high mechanical stability was proposed via combining surface support brought by metallic-CNTs network and interfacial cross-linking of GO sheets achieved by nanoparticle selective absorption...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30776885/enhanced-stability-and-controlled-delivery-of-mof-encapsulated-vaccines-and-their-immunogenic-response-in-vivo
#19
Michael Andrew Luzuriaga, Raymond P Welch, Madushani Dharmarwardana, Candace E Benjamin, Shaobo Li, Arezoo Shahrivarkevishahi, Sarah Popal, Lana Tuong, Chayton Creswell, Jeremiah J Gassensmith
Vaccines have an innate tendency to lose their structural conformation upon environmental and chemical stressors. A loss in conformation reduces the therapeutic ability to prevent the spread of a pathogen. Herein, we report an in-depth study of zeolitic imidazolate framework-8 (ZIF-8) and its ability to provide protection for a model viral vector against denaturing conditions. The immunoassay and spectroscopy analysis together demonstrate enhanced thermal and chemical stability to the conformational structure of the encapsulated viral nanoparticle...
February 19, 2019: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/30776886/enhanced-lysosomal-escape-of-ph-responsive-pei-betaine-functionalized-carbon-nanotube-for-the-co-delivery-of-survivin-sirna-and-doxorubicin
#20
Yue Cao, Hao-Yan Huang, Li-Qing Chen, Huan-Huan Du, Jing-Hao Cui, Leshuai W Zhang, Beom-Jin Lee, Qing-Ri Cao
The combination of gene therapy and chemotherapy has recently received considerable attention for cancer treatment. However, low transfection efficiency and the poor endosomal escape of genes from nanocarriers strongly limit the success of the clinical use of small interfering RNA (siRNA). In this study, a novel pH-responsive surface modified single-walled carbon nanotube (SWCNT) was designed for the co-delivery of doxorubicin (DOX) and survivin siRNA. Polyetherimide (PEI) was covalently conjugated with betaine, and the resulting PEI-betaine (PB) was further synthesized with the oxidized SWCNT to form SWCNT-PB (SPB), which exhibits an excellent pH-responsive lysosomal escape of siRNA...
February 18, 2019: ACS Applied Materials & Interfaces
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