The synthesis of degradable polymers with easy-to-break in-chain carbon-oxygen bonds has attracted much *** minireview introduces the synthesis of a variety of degradable polymers from the(co)polymerizations of severa...
详细信息
The synthesis of degradable polymers with easy-to-break in-chain carbon-oxygen bonds has attracted much *** minireview introduces the synthesis of a variety of degradable polymers from the(co)polymerizations of several typical oxygenated monomers such as epoxides,cyclic carbonates,cyclic esters,carbon dioxide(CO_(2)),carbonyl sulfide(COS),and cyclic *** highlight the catalysts and mechanisms for these(co)*** ring-opening copolymerization of five-membered carbonate with cyclic anhydride or COS has been *** also highlight the synthesis of block copolymers and cyclic copolymers with well-defined sequences by the method of growing center *** hope that these new polymerization systems can provide new ideas for the development of degradable low-carbon polymers in the future.
Van der Waals(vdW)ferroelectric-semiconductor heterojunction provides reconfigurable band alignment based on optical/electrical-assisted polarization switching,which shows great potential to construct artificial visua...
详细信息
Van der Waals(vdW)ferroelectric-semiconductor heterojunction provides reconfigurable band alignment based on optical/electrical-assisted polarization switching,which shows great potential to construct artificial visual neural ***,the mechanical exfoliation fabrication scheme for proof-of-concept demonstrations and fundamental studies is cumbersome and not scalable for practical ***,we present a synthetic strategy for the large-scale and high crystallinity growth of planar/verticalα-In_(2)Se_(3)/MoS_(2)heterojunctions by dynamically tuning the growth ***,based on theα-In_(2)Se_(3)/MoS_(2)heterostructures,photo-synapse devices are designed and fabricated to simulate visual neural systems functions,including multistate storage,optical logic operation,potentiation and depression,paired-pulse facilitation(PPF),short-term memory(STM),long-term memory(LTM),and *** coupling the spatiotemporally relevant optical and electric information,the device can mimic the superior biological visual system’s light adaptation and Pavlovian *** work provides a strategy for dynamically tuning the orientation of ferroelectric-semiconductor heterojunction stacks and will give impetus to applying all-in-one sensing and memory-computing artificial vision systems.
This study constructs a 3D high-fidelity outcrop-based analog velocity and density model capable of capturing and replicating geologically realistic meter-scale intrinsic depositional heterogeneities of carbonate rock...
详细信息
Recently, metal halide perovskites for neuromorphic information processing have emerged due to their attractive optoelectronic properties such as high photosensitivity and good charge transport. However, perovskites u...
详细信息
The effect of side-chain engineering of conjugated molecules on the morphology and device performance in binary organic solar cells has been widely investigated. However, this relationship has hardly been studied in t...
详细信息
The effect of side-chain engineering of conjugated molecules on the morphology and device performance in binary organic solar cells has been widely investigated. However, this relationship has hardly been studied in the guest components of ternary organic solar cells. In this study, a family of non-fullerene guest acceptors, namely XY-3, XY-5 and XY-7, with hydrogen substituent,straight and branched alkyl chains on the bithiophene units, respectively, were designed and synthesized to understand their effects on aggregation properties and device performance. The straight and branched alkyl chains on the bithiophene units result in sightly blue-shifted absorption compared to the hydrogen substituent and the XY-7 demonstrates the most appropriate phase separation scale and the most balanced charge transport. Consequently, the OSCs based on D18:e C9:XY-7 achieve a high shortcircuit current density(JSC) and fill factor(FF), while maintaining the enhancement of the open-circuit voltage(VOC) achieving an efficiency of 19.32%, exceeding those of D18:e C9, D18:e C9:XY-3, D18:e C9:XY-5(PCE:18.28%, 19.04%, 18.75%, respectively). These results highlight that the side-chain engineering of Y series non-fullerene acceptors as the guest acceptors has great potential in optimizing morphology properties and promoting photovoltaic performance.
作者：
Jinkang ZhuChunhui LiXiuqin LiQiaochun WangLei ZouKey Laboratory for Advanced Materials
Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China
The transformation of a Palladium-based metal-organic cage to a structurally similar one by direct ligand replacement usually leads to unwanted ligand scrambling. In this work, an intermediate ligand with different sh...
详细信息
The transformation of a Palladium-based metal-organic cage to a structurally similar one by direct ligand replacement usually leads to unwanted ligand scrambling. In this work, an intermediate ligand with different shape and basicity from the initial/final ones was introduced to avoid ligand scrambling to achieve the efficient indirect cage-to-similar-cage transformation. Compared with the direct transformation, the stepwise conversion has the advantages of high efficiency(93%) and simple workup.
With the growing trend of high-channel high trace density acquisition, the accuracy of the survey planning became critical for the best data quality and highest productivity. The satellite maps are a great source of i...
详细信息
The Sm-Co alloy nanopowder was successfully prepared by the low oxygen-induction thermal plasma (LO-ITP) process. In order to improve the magnetic properties of the Sm-Co nanopowder, the heat treatment effect on the p...
详细信息
CVD diamond for direct bonding were polished using Ar and SF6-gas cluster ion beam (GCIB). The effects of gas variety on the removed thickness, surface roughness and the crystallinity of diamond surface were discussed...
详细信息
Industry-scale land seismic data acquisition in the arid area requires an accurate land cover map to arrive at a safe, reliable, and successful project execution. Unmanned Aerial Vehicle (UAV) surveys offer a cheap, f...
详细信息
暂无评论