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1d arrays of Highly Adhesive Nanosheets Inspired by Mytilus Edulis Foot Proteins

AdVANCEd MATERIALS INTERFACES 2023年第20期10卷

作者： Xu, Lingyun Zhao, Zhihao Ge, Yinghao Wang, Zhixin Sun, Xiaohan Jiang, Xiangyu Beihang Univ Res Inst Frontier Sci Beijing 100191 Peoples R China Beihang Univ Coll Chem Beijing 100191 Peoples R China Univ Sci & Technol Beijing Sch Mat Sci & Engn Dept Mat Phys & Chem Beijing 100083 Peoples R China Chinese Acad Sci Tech Inst Phys & Chem Key Lab Bioinspired Mat & Interfacial Sci Beijing 100190 Peoples R China Ji Hua Lab Foshan 528000 Peoples R China

Assembling functional materials into one-dimensional arrays is an efficient method for the integration of devices. However, the complicated assembly methods and poor stability of patterns still restrict their further applications. In this work, the well-dispersible nanosheets are prepared by introducing a bionic adhesive strategy. The oriented arrays with uniform morphology and precise position are realized by the liquid-film-induced capillary bridge assembly method. Owing to the abundant interactions between catechol structure and targeted substrates, the micro-wires present extraordinary stability in adhesion tests. Field-effect transistors (FETs) based on these micro-wires are also fabricated, and enhanced carrier mobility is achieved, exhibiting to be 41 times higher than pristine film-structured FETs. Micro-wires have a certain stability and improved electrical properties at the same time, which endows this strategy with practicality and application prospect.

关键词： 1d arrays bio-inspired adhesion field-effect transistors graphene micro wires-based arrays

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One-Step Patterning of Organic Semiconductors on Gold Electrodes via Capillary-Bridge Manipulation

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ACS APPLIEd MATERIALS & INTERFACES 2022年第28期14卷 32761-32770页

作者： Liu, Yun Che, Pengda Zhang, Bo Yang, Jingrun Gao, Hanfei Feng, Jiangang Wu, Yuchen Jiang, Lei Chinese Acad Sci Tech Inst Phys & Chem Key Lab Bioinspired Mat & Interfacial Sci Beijing 100190 Peoples R China Beihang Univ Sch Chem Key Lab Bioinspired Smart Interfacial Sci & Techno Beijing 100191 Peoples R China Ji Hua Lab Foshan 528000 Guangdong Peoples R China Beijing Inst Technol Inst Adv Struct Technol Beijing Key Lab Lightweight Multifunct Composite M R China Beijing 100081 Peoples R China Natl Univ Singapore Dept Chem & Biomol Sci Singapore 117585 Singapore Peoples Liberat Army Gen Hosp Med Ctr 1 Dept Gen Surg Beijing 100853 Peoples R China

Patterning organic semiconductors directly on Au electrodes possesses the advantages of eliminating metal atomic penetration effect, compatibility with fine lithography processes, and feasibility of work function modification on electrodes, and it is therefore of value in the commercial manufacturability application of optoelectronic devices with low cost, large scale, and high efficiency. Solution processing, is relatively inexpensive and is scalable to large areas. Nonetheless, conventional solution processing approaches have trade-offs among controllable morphology, regular alignment, precise position, and ordered molecular packing arising from the uncontrollable dewetting kinetics. Here, one-step patterning of 1d polymer nanowire arrays directly on Au source-drain electrodes with precise position, controlled orientation, regulated distribution, and tunable width size were realized by employing a capillary-bridge manipulation method to guide the processes of liquid dewetting and nanowire assembly. Organic field-effect transistors (OFETs) with mobility of 10.1 cm(2) V(-1 )s(-1) and on/off current ratio of 1.9 x 10(4 )were fabricated. Moreover, we verified generality of our method by patterning different solution-processable optoelectronic materials, including small molecules, quantum dot (Qd) nanoparticles, and metal-halide perovskites, into ordered structures directly on the target substrate. The work provides a novel insight into efficient manufacturing the regular aligned and precisely positioned 1d organic semiconductors directly on the channel region of prefabricated Au electrodes in one step and facilitates their applications in high-performance electronic devices.

关键词： 1d arrays Au electrodes wettability solution patterning field-effect transistors

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Regular Aligned 1d Single-Crystalline Supramolecular arrays for Photodetectors

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SMALL 2018年第5期14卷 2018 Feb;14(5)页

作者： Liu, Yun Feng, Jiangang Zhang, Bo Wu, Yuchen Chen, Yong Jiang, Lei Chinese Acad Sci Inst Chem Key Lab Green Printing Beijing Natl Lab Mol Sci Beijing 100190 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China Chinese Acad Sci Tech Inst Phys & Chem Key Lab Bioinspired Mat & Interfacial Sci Beijing 100190 Peoples R China Beihang Univ Sch Chem Beijing Key Lab Bioinspired Energy Mat & Devices Minist EducKey Lab Bioinspired Smart Interfacial Beijing 100191 Peoples R China

Solution-processed semiconductor single-crystal patterns possess unique advantages of large scale and low cost, leading to potential applications toward high-performance optoelectronic devices. To integrate organic semiconductor micro/nanostructures into devices, various patterning techniques have been developed. However, previous patterning techniques suffer from trade-offs between precision, scalability, crystallinity, and orientation. Herein, a patterning method is reported based on an asymmetric-wettability micropillar-structured template. Large-scale 1d single-crystalline supramolecular arrays with strict alignment, pure crystallographic orientation, and precise position can be obtained. The wettability difference between tops and sidewalls of micropillars gives rise to the confinement of organic solutions in discrete capillary tubes followed by dewetting and formation of capillary trailing. The capillary trailing enables unidirectional dewetting, regulated mass transport, and confined crystal growth. Owing to the high crystallinity and pure crystallographic orientation with Pt atomic chains parallel to the substrate, the photodetectors based on the 1d arrays exhibit improved responsivity. The work not only provides fundamental understanding on the patterning and crystallization of supramolecular structures but also develops a large-scale assembly technique for patterning single-crystalline micro/nanostructures.

关键词： 1d arrays single crystal supramolecular crystal wettability photodetectors

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Ni-Mo based mixed-phase polyionic compounds nanorod arrays on nickel foam as advanced bifunctional electrocatalysts for water splitting

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CHEMICAL ENGINEERING JOURNAL 2021年 416卷 129127-129127页

作者： Zhang, Jitang Guo, Shuai Xiao, Beibei Lin, Zhiping Yan, Linghui du, damin Shen, Shijie Taizhou Univ Sch Pharmaceut & Mat Engn Taizhou 318000 Peoples R China Beijing Univ Posts & Telecommun State Key Lab Informat Photon & Opt Commun Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Sch Sci Beijing 100876 Peoples R China Jiangsu Univ Sci & Technol Zhenjiang Sch Energy & Power Engn Zhenjiang 212003 Jiangsu Peoples R China

The exploration of low-cost, high-efficient and robust bifunctional electrocatalysts for water splitting is urgently desired for developing clean hydrogen energy conversion technology. In this work, we present a facile and effective one-step molten salt synthesis tactics to prepare self-supported 1d Ni-Mo based mixed-phase polyionic compounds nanorod arrays (NMNAs). due to the exposed more active sites of this nanostructure and accelerated charge transfer derived from modulated electronic structures between Ni-Mo, the as-fabricated NMNAs electrodes deliver remarkable bifunctional electrocatalytic water splitting performance, with overpotential values of 234.2 mV at 200 mA cm-2 and 191.2 mV at 100 mA cm-2 in 1 M KOH for OER and HER, respectively. Furthermore, the alkaline electrolyzer composed of NMNAs needs a low overall-water-splitting cell voltage of 1.423 V to drive a current density of 10 mA cm-2. This work will shed light on the preparation of other related self-supporting nanostructured bifunctional electrocatalysts with excellent performance.

关键词： 1d arrays Molten salt Binder-free Bifunctional Water splitting

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Silicon nanowires@Co3O4 arrays film with Z-scheme band alignment for hydrogen evolution

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CATALYSIS TOdAY 2019年 335卷 294-299页

作者： Lu, Kang-Qiang Lin, Xin Tang, Zi-Rong Xu, Yi-Jun Fuzhou Univ Coll Chem State Key Lab Photocatalysis Energy & Environm Fuzhou 350116 Fujian Peoples R China Fuzhou Univ Coll Chem New Campus Fuzhou 350116 Fujian Peoples R China

Photocatalytic water splitting for hydrogen evolution provides an attractive strategy for clean, low-cost, and environment-friendly production of hydrogen from solar energy. Here, the film composite of Co3O4 nanoparticles decorated well-defined one-dimensional (1d) silicon nanowires arrays (SiNWs@Co3O4) are constructed by employing SiNWs arrays as a building block via a facile calcination approach. In comparison with bare SiNWs arrays, the resultant SiNWs@Co3O4 arrays composite exhibits distinctly enhanced photocatalytic performance for the evolution of hydrogen. The enhanced photoactivity is attributed to the formation of a direct Z-scheme band alignment in the SiNWs@Co3O4 film composite, which results in an improved spatial separation and migration of photoinduced electron-hole pairs as compared to bare SiNWs under light irradiation. Our work is anticipated to promote ongoing interest in the design of high-performance artificial 1d-based Z-scheme film photocatalysts with enhanced performance.

关键词： Silicon nanowires Composites Charge transfer 1d arrays Band alignment

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Silicon [email protected] 3 O 4 arrays film with Z‑scheme band alignment for hydrogen evolution

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Catalysis Today 2019年 335卷 294-299页

作者： Kang-Qiang Lu Xin Lin Zi-Rong Tang Yi-Jun Xu State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350116 PR China College of Chemistry New Campus Fuzhou University Fuzhou 350116 PR China

Photocatalytic water splitting for hydrogen evolution provides an attractive strategy for clean, low-cost, and environment-friendly production of hydrogen from solar energy. Here, the film composite of Co 3 O 4 nanoparticles decorated well-defined one-dimensional (1d) silicon nanowires arrays ( [email protected] 3 O 4 ) are constructed by employing SiNWs arrays as a building block via a facile calcination approach. In comparison with bare SiNWs arrays, the resultant [email protected] 3 O 4 arrays composite exhibits distinctly enhanced photocatalytic performance for the evolution of hydrogen. The enhanced photoactivity is attributed to the formation of a direct Z-scheme band alignment in the [email protected] 3 O 4 film composite, which results in an improved spatial separation and migration of photoinduced electron-hole pairs as compared to bare SiNWs under light irradiation. Our work is anticipated to promote ongoing interest in the design of high-performance artificial 1d-based Z-scheme film photocatalysts with enhanced performance.

关键词： Silicon nanowires Composites Charge transfer 1d arrays Band alignment

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Capillary-Bridge Mediated Assembly of Conjugated Polymer arrays toward Organic Photodetectors

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AdVANCEd FUNCTIONAL MATERIALS 2017年第34期27卷 n/a-N.PAG页

作者： Gao, Hanfei Feng, Jiangang Zhang, Bo Xiao, Chengyi Wu, Yuchen Kan, Xiaonan Su, Bin Wang, Zhaohui Hu, Wenping Sun, Yanming Jiang, Lei Heeger, Alan J. Chinese Acad Sci Tech Inst Phys & Chem Lab Bioinspired Smart Interface Sci Beijing 100190 Peoples R China UCAS Beijing 100049 Peoples R China Qingdao Univ Sci & Technol Sch Polymer Sci & Engn Qingdao 266042 Peoples R China Chinese Acad Sci Inst Chem Key Lab Organ Solids BNLMS Beijing 100190 Peoples R China Monash Univ Dept Chem Engn Clayton Vic 3800 Australia Beihang Univ Key Lab Bioinspired Smart Interfacial Sci & Techn Minist EducSch Chem & Environm Beijing Key Lab Bioinspired Energy Mat & Devices Beijing 100190 Peoples R China Beihang Univ Int Res Inst Multidisciplinary Sci Heeger Beijing Res & Dev Ctr Beijing 100190 Peoples R China

Large-scale patterning of high-quality organic semiconductors is crucial for the fabrication of optoelectronic devices with high efficiency and low cost. Yet, owing to the uncontrollable dewetting dynamics of organic liquid in conventional solution patterning techniques, large defect density of organic architectures is inevitable, which is detrimental to the device performance. To address this challenge, herein a capillary-bridge-mediated assembly technique is developed for regulating the dewetting process, yielding large-scale 1d microstructure ordered arrays. The 1d arrays organic photodetectors exhibit a high optoelectronic performance of light on/off ratio exceeding 100, responsivity of 3.24 A W-1, detectivity of 3.20 x 10(11) Jones and fast response speed, showing a great improvement compared with spin-coated membrane devices. In addition, the significant enhancement of the device photodetection under the electronic field modulation is investigated by applying a back-gate voltage and explained with the photocurrent predominating in the OFF state and the neglected thermocurrent and tunneling current promoting in the ON state of the phototransistor devices. The research offers a new insight for the facile fabrication of large-scale integrated photodetectors and other organic devices based on patterned conjugated polymers.

关键词： 1d arrays conjugated polymers dewetting optoelectronics photodetectors

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18-Crown-6 as a linker for (imino ester)₂Pt centers providing their assembly into 1d arrays via hydrogen bonding

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INORGANIC CHEMISTRY COMMUNICATIONS 2010年第5期13卷 580-583页

作者： Chulkova, Tatiana G. Gushchin, Pavel V. Haukka, Matti Kukushkin, Vadim Yu. St Petersburg State Univ Dept Chem St Petersburg 198504 Russia Univ Eastern Finland Dept Chem FI-80101 Joensuu Finland

The platinum(II- and IV) complexes trans-[PtCln{HN=C(OMe)Et}(2)] (n=2, 4) were assembled with 18-crown-6 into novel 1d arrays by hydrogen bonding thus forming 1:1 associates. The crystal structure determinations revealed the presence of the N-H center dot center dot center dot O and the non-conventional weak CH center dot center dot center dot O interactions between the imino hydrogen and the methyl hydrogens, respectively, of trans-[PtCln{HN=C(OMe)Et}(2)] and the oxygens of 18-crown-6. (C) 2010 Elsevier B.V. All rights reserved.

关键词： 18-Crown-6 Imino ester ligand Platinum Supramolecular chemistry 1d arrays

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Efficient implementation of iterative multi-input-multi-output orthogonal frequency-division multiplexing receiver using minimum-mean-square error interference cancellation

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IET COMMUNICATIONS 2014年第7期8卷 990-999页

作者： Han, Bing Yang, Zengli Zheng, Yahong Rosa Missouri Univ Sci & Technol Dept Elect & Comp Engn Rolla MO 65409 USA

An efficient hardware implementation scheme is proposed for iterative multi-input-multi-output orthogonal frequency-division multiplexing receiver which includes an MMSE-IC (minimum-mean-square error interference cancellation) detector, a channel estimator, a low-density parity-check (LdPC) decoder and other supporting modules. The proposed implementation uses the QR decomposition (QRd) of the complex-valued matrices with four coordinate rotation digital computer (CORdIC) cores and a back substitution to solve the MMSE-IC equations while the existing systolic array architectures require 15-38 CORdIC cores to achieve a similar throughput. The proposed 4-CORdIC QRd architecture can be configured as a 16-matrix or a 64-matrix pipelining by using a different number of multipliers combined with one-dimensional (1d) or 2d arrays of the back substitution, respectively. The channel estimator implements a commonly-used frequency domain least squares channel estimation with the canonic-signed-digits method, thanks to the character of the Zadroff-Chu sequence used as the pilot. In the LdPC decoder, the min-sum algorithm is implemented for the quasicyclic LdPC decoding. The two schemes for the MMSE-IC detector with different throughput and resource usages have been implemented in a Field Programmable Gate Array for a complete baseband turbo receiver. Their resource usages, throughputs and latencies are compared with the classic systolic array architectures, which demonstrate that the proposed receiver architecture achieves the best tradeoff between the throughput and the resource usage.

关键词： iterative methods MIMO communication OFdM modulation least mean squares methods interference suppression channel estimation parity check codes digital arithmetic systolic arrays frequency-domain analysis field programmable gate arrays cyclic codes decoding radiofrequency interference iterative multiple-input multiple-output orthogonal frequency-division multiplexing receiver minimum mean square error interference cancellation hardware implementation scheme MMSE-IC detector low-density parity-check decoder LdPC decoder QR decomposition complex-valued matrices coordinate rotation digital computer cores CORdIC cores MMSE-IC equations 4-CORdIC QRd architecture one-dimensional arrays 2d arrays 1d arrays frequency domain least square channel estimation canonic-signed-digit method Zadroff-Chu sequence character min-sum algorithm quasicyclic LdPC decoding resource usages field programmable gate array baseband turbo receiver classic systolic array architectures receiver architecture

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Size-Selective 2d Ordering of Gold Nanoparticles Using Surface Topography of Self-Assembled diamide Template

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ACS NANO 2012年第10期6卷 8498-8507页

作者： Sangeetha, Neralagatta M. Blanck, Christian Thi Thanh Tam Nguyen Contal, Christophe Mesini, Philippe J. Inst Charles Sadron F-67034 Strasbourg 2 France

Size-selective organization of similar to 2 nm dodecanethiol stabilized gold nanoparticles (AuNPi) into periodic 18 arrays by using the surface topographical features of a soft template is described. The template consists of micrometer length nanotapes organized into nanosheets with periodic valleys running along their length and is generated by the hierarchical self-assembly of a diamide molecule (BHPB) in cyclohexane. The AuNP ordering achieved simply by mixing the preformed template with the readily available similar to 2 nm dodecanethiol stabilized AuNPs is comparable to those obtained using programmable dNA and functional block copolymers. The observed periodicity of the AuNP arrays provided valuable structural clues about the organization of nanotapes into nanosheets. Self-assembling BHPB molecules in the presence of AuNPs by heating and cooling the two components led to a comparatively disordered organization because the template structure was changed under these conditions. Moreover, the template could not order larger AuNPs (similar to 5 nm) into a similar 1d array, owing to the steric restriction imposed by the dimension of the valleys on the template. Interestingly, this geometric constraint led to AuNP size sorting when a polydisperse sample (2.5 +/- 0.9 nm) was used for organization, with AuNPs attached to the template edges being larger (>= 2.2 +/- 0.9 nm) than those associated to the inner valleys (1.6 +/- 0.8 nm). This is a unique example of size-sorting induced by the surface topographical features of a soft template.

关键词： self-assembly nanotapes nanosheets gold nanoparticles 1d arrays size-selection size-sorting

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