Abstract Innovative technologies are highly pursued for the detection and avoidance of counterfeiting in modern information society. Herein, we report construction photo-responsive supramolecular polymers toward fluorescent anti-counterfeit applications, by taking advantage multicycle anthracene‒endoperoxide switching properties. Due to σ -metalation effect, photo-oxygenation anthracene endoperoxide is proceeded under mild visible light irradiation conditions, while backward conversion...

Abstract Sequential energy transfer is ubiquitous in natural light harvesting systems to make full use of solar energy. Although various artificial have been developed with the biomimetic sequential character, most them exhibit overall efficiency lower than 70% due disordered organization donor/acceptor chromophores. Herein a system constructed via supramolecular copolymerization σ-platinated (hetero)acenes, by taking inspiration from green photosynthetic bacteria. The absorption and...

Platinum(II) terpyridine complexes have received tremendous attention in recent years because of their square-planar geometry and fascinating photophysics. Bottom-up self-assembly represents an intriguing approach to construct well-ordered supramolecular architectures with tunable optical electronic properties. Until now, much effort has been devoted the fabrication monocomponent platinum(II) terpyridine-based assemblies. The next step is develop multicomponent coassembled systems via...

Yield estimation using remote sensing data is a research priority in modern agriculture. The rapid and accurate of winter wheat yields over large areas an important prerequisite for food security policy formulation implementation. In most county-level yield processes, multiple input are used prediction as much possible, however, some regions, more difficult to obtain, so we the single-leaf area index (LAI) model prediction. this study, effects different time steps well LAI series on results...

Abstract Much greater surface-to-volume ratio of hierarchical nanostructures renders them attract considerable interest as prototypical gas sensors. In this work, a novel resistive sensor based on TiO 2 /Ag 0.35 V O 5 branched nanoheterostructures is fabricated by facile one-step synthetic process and the ethanol sensing performance device characterized systematically, which shows faster response/recovery behavior, better selectivity, higher sensitivity about 9 times compared to pure...

Abstract One‐dimensional organic structures with well‐oriented π‐aggregation, strong emission, and ease of processability are desirable for optoelectronic waveguiding devices. Herein, a strategy is developed to attain this objective by self‐assembling platinum(II) acetylides into fluorescent supramolecular polymers via cooperative mechanism. The resulting high‐molecular‐weight capable forming electrospun microfibers uniform geometry smooth surface, which enable light propagation extremely...

Hierarchical nanostructures with much increased surface-to-volume ratio have been of significant interest for prototypical gas sensors. Herein we report a novel resistive sensor based on TiO2/V2O5 branched nanoheterostructures fabricated by facile one-step synthetic process, in which well-matched energy levels induced the formation effective heterojunctions between TiO2 and V2O5, large Brunauer-Emmett-Teller surface area complete electron depletion V2O5 nanobranches branched-nanofiber...

Two-dimensional (2D) organic polymers have recently received considerable interest, especially those whose architectures are held together via supramolecular engineering. However, current approaches toward 2D structures usually suffer from mutual interference of noncovalent interactions and lack intrinsic functions. Herein, we report well-regulated (2DSPs) through an aromatics-selective recognition strategy cation-π donor-acceptor (D-A) motifs, which derived C4 -symmetric cationic monomers...

4-Nitrophenol (4-NP) is a priority pollutant in water and both carcinogenic genotoxic to humans wildlife even at very low concentrations. Thus, we herein fabricated novel molecularly imprinted core-shell nanohybrid as ratiometric fluorescent sensor for the highly sensitive selective detection of 4-NP. This was functioned by transfer fluorescence resonance energy between photoluminescent carbon dots (CDs) synthesized linking organosilane-functionalized CDs silica-coated CdSe quantum...

A facile one-pot approach for synthesis of gold nanoparticles with narrow size distribution and good stability was presented by reducing chloroauric acid a polysaccharide, konjac glucomannan (KGM) in alkaline solution, which is green economically viable. Here, KGM served both as agent stabilizer. The effects on the formation stabilization as-synthesized were studied systematically combination UV-visible (UV-vis) absorption spectroscopy, transmission electron microscopy, X-ray diffraction,...

Abstract Two piezochromic materials containing phenanthro[9,10‐ d ]imidazole and tetraphenylethylene (M1 M2) were developed. A supra‐amplification effect originating from their various long‐to‐short axis ratios was discovered in high‐pressure experiments. Based on the linear relationship between applied pressure emission‐peak wavelength during pressurizing depressurizing cycles, quantitative sensitivity for piezochromism could be denoted. M2 displayed higher contrast (102 nm) better (11.19...

Vapo-fluorochromic 3D code encryption systems have been constructed on the basis of cyanostilbene-based supramolecular assemblies, which open up a new avenue toward smart information protection materials.

Abstract Previous reports have demonstrated significant effects of hole transport layer (HTL) on the morphology quasi‐2 dimensional (2D) perovskites, injection, and interfacial defect density. However, HTL energy landscape funneling quasi‐2D perovskites not been revealed so far. Herein, PEA 2 Cs n −1 Pb Br 3 +1 perovskite films are fabricated four types HTLs including poly(9‐vinylcarbazole):poly(ethylene oxide) (PVK:PEO), PVK, poly(3,4‐ethylene dioxythiophene):poly(styrene sulfonate)...

Herein a new organoplatinum(ii)-based molecular tweezer has been designed and synthesized, which displays pH-responsive mechanical transformation from the "U"- to "W"-shaped conformation. Pt(ii)Pt(ii) metal-metal interactions have successfully incorporated into resulting tweezer/guest recognition motifs self-assembled polymers, can be modulated in response pH variation.

Mechanically linked poly[2]rotaxanes have been designed and synthesized, which displays interesting thermal rheological properties due to the integration of [2]rotaxane moieties into polycaprolactone chains.

This study explores the metal Co- and nonmetal-atom-codoped graphene (CoNMx-graphene, x = 1–3 NM N, Si, P) as substrates for CO oxidation reactions. By density functional theory calculations, we show formation mechanism of CoNM3-graphene configurations their corresponding electronic structures magnetic properties. On sheets, adsorbed O2 is more stable than that molecule serves reactive species. Besides, coadsorption CO/O2 (or 2CO) has larger adsorption energies those isolated molecules,...

Taking depth into consideration has been proven to improve the performance of semantic segmentation through providing additional geometry information. Most existing works adopt a two-stream network, extracting features from color images and separately using two branches same structure, which suffer high memory computation costs. We find that acquired by simple downsampling can also play complementary part in task, sometimes even better than scheme with branches. In this paper, novel...

This paper proposes a solution for the cooperative obstacle avoidance path planning problem in dual manipulator arms using an improved Rapidly Exploring Random Tree (RRT) algorithm. The are categorized into main arm and secondary arm. Initially, master is planned presence of static obstacles. Subsequently, poses during its movement treated as dynamic obstacles slave A cost function incorporating fast convergence policy introduced. Additionally, adaptive weights between distance variation...

A novel main-chain supramolecular polymer (MCSP) with intrinsic stimuli-responsiveness based on dative B ← N bonds has been successfully developed.