Few‐Layer Graphdiyne Nanosheets Applied for Multiplexed Real‐Time DNA Detection

Parvin, Nargish; Jin, Quan; Wei, Yanze; Yu, Rong; Zheng, Bing; Huang, Ling; Zhang, Ying; Wang, Lianhui; Zhang, Hua; Gao, Mingyuan; Zhao, Huijun; Hu, Wenping; Li, Yuliang; Wang, Dan

doi:10.1002/adma.201606755

Cited by 207 publications

(107 citation statements)

References 43 publications

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“…Moreover, the presence of carbon–carbon triple bonds in the general graphyne structure opens endless possibilities to introduce heteroatoms (e.g., hydrogen, fluorine, oxygen) and functional groups to prepare their derivatives with fine‐tuned properties . In fact, theoretical calculations have concluded that the graphyne family provides an effective area for tailored optical, bandgap, electronic, chemical, mechanical, and magnetic properties . As it is expected that the graphyne would form effective bonding with TiO 2 , perovskite, and spiro‐OMTD, we ventured to use it to interface in between the TiO 2 ETL, perovskite, and spiro HTL, in hoping that it would form a more effective carrier transport channel for boosted solar cell performance.…”

Section: Static Figures Of Merit For the Reference And Gd‐optimized Pmentioning

confidence: 99%

Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells

Zhang

Wang

Jin

et al. 2017

Adv Materials Inter

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Comparing to other carbon materials, the general graphyne structure is much superior in terms of adaptable bandgap, uniformly distributed pores, more design flexibility, easier for chemical synthesis, pliable electronic properties, and smaller atomic density. Herein, novel γ‐graphdiyne quantum dots (GD QDs) are used in perovskite solar cells as a surface modifier or dopant to TiO2, CH3NH3PbI3, and Spiro‐OMeTAD to realize multiple advantageous effects, in hoping that it would form a more effective carrier transport channel for boosted solar cell performance. First, the presence of GD QDs on TiO2 surface increases perovskite grain size for higher current density and fill factor. Second, the GD QDs at each interface reduce the conduction band offset, passivate the surface for suppressed carrier recombination to attain higher open‐circuit voltage. Third, it improves hydrophobicity and eliminates pinholes in the Spiro‐OMeTAD film for enhanced solar cell stability. As a result, the optimized device shows >15% enhancement in power conversion efficiency (from 17.17 to 19.89%) comparing to the reference device. More significantly, the device stability was improved in harsh environment (moist air, UV irradiation, or thermal conditions). It is expected that GD QDs will find their applications in efficient and stable perovskite solar cells and optoelectronic devices.

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Section: Static Figures Of Merit For the Reference And Gd‐optimized Pmentioning

confidence: 99%

Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells

Zhang

Wang

Jin

et al. 2017

Adv Materials Inter

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“…And then γ‐graphdiyne was obtained by the cross‐couling reaction of hexaethynylobenzene under a nitrogen atmosphere with pyridine and copper foil for 2 days. Afterward, the methods by the cross‐coupling reaction of hexaethylbenzene were vastly explored to synthesize γ‐graphdiyne materials like hydrogen‐substituted γ‐graphdiyne, chlorine‐substituted γ‐graphdiyne, γ‐graphdiyne nanowalls, and graphdiyne wires . Li and co‐workers assembled the lithium‐ion battery by using γ‐graphdiyne as anode, and the battery showed the reversible capacity of 500 mAh g −1 after 200 cycles at 50 mA g −1 .…”

Section: Introductionmentioning

confidence: 99%

Mechanochemical Synthesis of γ‐Graphyne with Enhanced Lithium Storage Performance

Yang

et al. 2019

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γ‐Graphyne is a new nanostructured carbon material with large theoretical Li+ storage due to its unique large conjugate rings, which makes it a potential anode for high‐capacity lithium‐ion batteries (LIBs). In this work, γ‐graphyne‐based high‐capacity LIBs are demonstrated experimentally. γ‐Graphyne is synthesized through mechanochemical and calcination processes by using CaC2 and C6Br6. Brunauer–Emmett–Teller, atomic force microscopy, X‐ray photoelectron spectroscopy, solid‐state 13C NMR and Raman spectra are conducted to confirm its morphology and chemical structure. The sample presents 2D mesoporous structure and is exactly composed of sp and sp2‐hybridized carbon atoms as the γ‐graphyne structure. The electrode shows high Li+ storage (1104.5 mAh g−1 at 100 mA g−1) and rate capability (435.1 mAh g−1 at 5 A g−1). The capacity retention can be up to 948.6 (200 mA g−1 for 350 cycles) and 730.4 mAh g−1 (1 A g−1 for 600 cycles), respectively. These excellent electrochemical performances are ascribed to the mesoporous architecture, large conjugate rings, enlarged interplanar distance, and high structural integrity for fast Li+ diffusion and improved cycling stability in γ‐graphyne. This work provides an environmentally benign and cost‐effective mechanochemical method to synthesize γ‐graphyne and demonstrates its superior Li+ storage experimentally.

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“…Graphdiyne (GDY) is an ovel two-dimensional carbon allotrope, which consists of sp-and sp 2 -hybridizedc arbon atoms, different from graphene and other traditional carbon materials. [8] On account of the unique structurea nd stable chemical properties, GDY exhibits excellent performance in many aspects,s uch as lithium storage, [9] supercapacitor, [10] UV photodetector, [11] DNA detection, [12] and oil/water separation. [13] Recently,N -doped GDY has been reported to reveal high activityf or ORR.…”

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Fe,N‐Codoped Graphdiyne Displaying Efficient Oxygen Reduction Reaction Activity

Yang

Wang

et al. 2018

ChemSusChem

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On account of the high‐cost of platinum, researchers are working to develop a new catalyst that is cheaper and has a catalytic effect equivalent to platinum. Herein, owing to the unique acetylenic bonds in graphdiyne, iron, nitrogen co‐doped graphdiyne (Fe‐N‐GDY) is a promising nonprecious metal catalyst, which has been developed with just a small amount of iron precursor with the plan to substitute it for Pt‐based catalysts. The as‐synthesized Fe‐N‐GDY composited catalyst shows excellent catalytic performance with the onset potential of 0.94 V versus reversible hydrogen electrode and limited current density of 5.4 mA cm−2. Moreover, it shows excellent resistance to methanol poisoning and stability in both acidic and alkaline electrolytes, which makes potentially applicable in the oxygen reduction reaction field.

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Few‐Layer Graphdiyne Nanosheets Applied for Multiplexed Real‐Time DNA Detection

Cited by 207 publications

References 43 publications

Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells

Graphdiyne Quantum Dots for Much Improved Stability and Efficiency of Perovskite Solar Cells

Mechanochemical Synthesis of γ‐Graphyne with Enhanced Lithium Storage Performance

Fe,N‐Codoped Graphdiyne Displaying Efficient Oxygen Reduction Reaction Activity

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