Preparation of ligand free Au NPs/PPV composites with high stability and photo-electric response

Zhai, Fei; Wei, Haotong; Zhan, Sumei; Jin, Gan; Yang, Bai; Sun, Haizhu; Huang, Zonghao

doi:10.1007/s10118-015-1574-6

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…In particular, gold nanoparticles or nanoclusters (Au NPs/NCs) exhibit excellent peroxidase-mimicking activity, good biocompatibility, and flexible modification on the surface . However, as Au NPs/NCs tend to aggregate easily due to the high surface energy, the prepared Au NPs/NCs require the protection of ligands or capping agents like macromolecules. , Usually, the catalytic reaction takes place on the surface, and the coating ligands used to protect Au NPs/NCs may block certain active sites on the surface, further reducing the catalytic activity. − Besides, previous studies have shown that the catalytic activity of Au NPs/NCs is correlated with size, and the smaller the size, the more the active sites are generally exposed, and potentially higher the catalytic efficiency.…”

Section: Introductionmentioning

confidence: 99%

Au-Decorated N-Rich Carbon Dots as Peroxidase Mimics for the Detection of Acetylcholinesterase Activity

Zhang

Han

et al. 2022

ACS Appl. Nano Mater.

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Well-distributed metals anchored on supports have attracted great attention owing to their potential application as cost-effective catalysts. Here, we demonstrate the successful preparation of Au-decorated N-rich carbon dot (Au-CD) nanocomposites, which possess excellent stability in aqueous media. The Au-CDs exhibit remarkable peroxidase-mimicking activity and high affinity to the substrate due to the fast electron-transfer process and ligand-free surface. Based on this, an Au-CD nanozyme-based colorimetric biosensor was successfully developed to assess the activity of acetylcholinesterase with high sensitivity and selectivity. More importantly, an ideal performance was achieved in clinical serum analysis. This work paves the way for the development of well-distributed metals anchored on supports as nanozymes for sensing applications.

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Section: Introductionmentioning

confidence: 99%

Au-Decorated N-Rich Carbon Dots as Peroxidase Mimics for the Detection of Acetylcholinesterase Activity

Zhang

Han

et al. 2022

ACS Appl. Nano Mater.

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“…For example, AHSCs fabricated by our group have reached an advanced echelon in just a few years. The prominent progress have been achieved in the power conversion efficiency (PCE) from <1% in 2011 to over 5% in 2017 through designing polymer, synthesizing NCs, passivating NCs, and optimizing device structure, etc . Though the present record PCE of 5.64% is still far behind other PV devices, the insistence of aqueous solvent is significant in the long term …”

Section: Pv Performance Of the Single‐ And Double‐side Bhj Devices Vmentioning

confidence: 99%

Aqueous‐Processed Polymer/Nanocrystal Hybrid Solar Cells with Double‐Side Bulk Heterojunction

Jin

Chen

Zeng

et al. 2017

Advanced Energy Materials

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derivatives of polythiophene, derivatives of fullerene, TiO 2 , CdSe, and CuInS 2 , etc., have been used for fabricating solar cells (SCs). [1][2][3][4][5][6][7][8][9][10][11] Aqueous-solution-processed polymer/nanocrystal (NC) hybrid solar cells (AHSCs) can effectively integrate the advantages of the polymer (e.g., flexibility and lightweight) and the inorganic NCs (e.g., high mobility and broad absorption), [12][13][14] and therefore be considered as an ideal system to further improve the performance of ASCs. For example, AHSCs fabricated by our group have reached an advanced echelon in just a few years. The prominent progress have been achieved in the power conversion efficiency (PCE) from <1% in 2011 to over 5% in 2017 through designing polymer, synthesizing NCs, passivating NCs, and optimizing device structure, etc. [15][16][17][18][19][20][21][22][23][24][25][26] Though the present record PCE of 5.64% is still far behind other PV devices, the insistence of aqueous solvent is significant in the long term. [27] In order to improve the performance of the AHSCs, we developed an effective way to enhance the short-circuit current (J sc ) by controlling the thickness of the active layer. [27] Devices with thin active layer generate relative higher fill factor (FF) but less light absorption. Therefore, the active layer is thickened to obtain more carriers for higher efficiency, and the record PCE of 5.64% is achieved. However, thick active layer results in redundant carriers that cannot reach to the electrodes due to their restricted transport length, increasing the probability of carrier recombination. As a consequence, the leading efficiencies are mainly hovering around ≈5.5%. Therefore, it is a key step to promote the extraction of the carriers in order to minimize their recombination and extend their transport length.To address this issue, an effective method is to create extensive interfaces for exciton dissociation and charge transfer between donor and acceptor. Bulk heterojunction (BHJ) is confirmed to be a successful structure to realize this aim and hence promote the carrier extraction. [28] PCE above 11% have been achieved recently based on oil-phase fullerene-free SCs. [29] Besides, hybrid photoconductive cathode assisted polymer SCs also achieved PCE above 10%. [30][31][32] However, the contact Aqueous-solution-processed solar cells (ASCs) are promising candidates of the next-generation large-area, low-cost, and flexible photovoltaic conversion equipment because of their unique environmental friendly property. Aqueoussolution-processed polymer/nanocrystals (NCs) hybrid solar cells (AHSCs)can effectively integrate the advantages of the polymer (e.g., flexibility and lightweight) and the inorganic NCs (e.g., high mobility and broad absorption), and therefore be considered as an ideal system to further improve the performance of ASCs. In this work, double-side bulk heterojunction (BHJ), in which one BHJ combines the active material with electron transport material and the other combines the active material...

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A combined experimental and theoretical investigation of donor and acceptor interface in efficient aqueous-processed polymer/nanocrystal hybrid solar cells

Jin

et al. 2018

Sci. China Chem.

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Preparation of ligand free Au NPs/PPV composites with high stability and photo-electric response

Cited by 4 publications

References 26 publications

Au-Decorated N-Rich Carbon Dots as Peroxidase Mimics for the Detection of Acetylcholinesterase Activity

Au-Decorated N-Rich Carbon Dots as Peroxidase Mimics for the Detection of Acetylcholinesterase Activity

Aqueous‐Processed Polymer/Nanocrystal Hybrid Solar Cells with Double‐Side Bulk Heterojunction

A combined experimental and theoretical investigation of donor and acceptor interface in efficient aqueous-processed polymer/nanocrystal hybrid solar cells

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