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Cover Illustration
2019, Vol.5  No.1
The cover picture shows nonfullerene acceptor molecules for bulk-heterojunction polymer solar cells. The summary and discussion are focused on the molecular architecture and device performance of three types of nonfullerene acceptor materials including perylene diimide-based acceptors, A-D-A and A-π-D-π-A conjugated acceptors, aiming to understand the structure-property relationship. More details are discussed in the article by Ren on page 180025.
Online ISSN: 2414-3421
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  • Table of Content
      29 March 2019, Volume 5 Issue 1 Previous Issue    Next Issue
    For Selected: View Abstracts Toggle Thumbnails
    Contents: Gen. Chem. 1/2019
    General Chemistry. 2019, 5 (1): 199001-199001.  
    Abstract   PDF (374KB) ( )
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    Interview with Dr. Bao-Yi Ren
    Bao-Yi Ren
    General Chemistry. 2019, 5 (1): 198002-198002.  
    Abstract   PDF (125KB) ( )
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    Recent Progress of Nonfullerene Acceptor Molecules for Bulk-Heterojunction Polymer Solar Cells
    Qin Xu, Yan-Mei Tan, Bao-Yi Ren, Meng-Jiao Wang, Ya-Guang Sun, Zhong-Min Su
    General Chemistry. 2019, 5 (1): 180025-0.   DOI: 10.21127/yaoyigc20180025
    Abstract   PDF (1707KB) ( )
    The bulk-heterojunction (BHJ) polymer solar cell (PSC) has been considered as one of the most promising next-generation photovoltaic technologies. Electron-accepting material, which is the key component as important as polymer donor in the BHJ blend of a PSC, can almost only choose from fullerene derivatives before 2015. Currently, nonfullerene acceptor (NFA) materials are attracting drastically increasing interest in organic photovoltaics as alternatives for fullerene derivatives, due to their advantages of structural diversity, low-cost, as well as extraordinary chemical, thermal, and photostability. Benefiting from the facile functionalization of NFA molecules, their photoelectric properties and stacking characteristics can be adequately adjusted to promote photoinduced charge separation and extraction. In recent five years, a lot of NFA molecules have been successfully designed and synthesized, and the power conversion efficiencies of NFA-based PSCs have reached ~13%, revealing the great potential of NFA-material for improving PSCs performances. In this review, the summary and discussion are focused on the molecular architecture and device performance of three types of NFAs materials including PDI-based acceptors, A-D-A and A-π-D-π-A conjugated acceptors, aiming to understand the structure-property relationship.
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    High Performing CO2 Capture by Smart Strategies in Functionalized Ionic Liquids
    Mingguang Pan, Jianxin Zou
    General Chemistry. 2019, 5 (1): 180018-180018.   DOI: 10.21127/yaoyigc20180018
    Abstract   PDF (871KB) ( )
    Functionalized ionic liquids (ILs) are the most promising approaches to achieve high performing CO2 capture. This mini-review outlines some important progress for functionalized ILs in CO2 capture. Ami-no-functionalized ILs exhibit high reactivity with CO2, and their careful structural design is able to produce high absorption capacity of CO2. The introduction of intra-molecular hydrogen bonding/proton transfer in ami-no-functionalized ILs is an attractive approach to avoid the formation of intermolecular hydrogen bonded networks generally occurred in traditional amino-functionalized ILs, thus resulting in enhanced absorption capacity of CO2 and improved uptake rate. Non-amino anion-functionalized ILs such as substituted azolide or phenolate ILs show great potential for rapid and reversible uptake of CO2 due to their lack of hydrogen bonding, controllable absorption enthalpy and excellent stability. However, there is still a long way to go to construct high performing systems based on functionalized ILs including high capacity of CO2, rapid absorption kinetics and excellent cycling life. Smart strategies such as dual-tuning methods, multi-site cooperative interactions, and intra-molecular hydrogen bonding/proton transfer would promote the development of CO2 capture in functionalized ILs significantly.
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    High Performance Layered Inorganic Flame Retardants: a Review
    Dongqin Su, Zehua Tang, Jinfeng Xie, Zhengxu Bian, Junhao Zhang, Aihua Yuan
    General Chemistry. 2019, 5 (1): 180021-180021.   DOI: 10.21127/yaoyigc20180021
    Abstract   PDF (944KB) ( )
    Layered inorganic compounds are potential flame retardant materials with good flame retardant performance. In particular, inorganic composites or inorganic-organic hybrids may be a promising candidate of flame re-tardants. This review introduces the thermal stability, flame retardancy, smoke suppression and their mecha-nism of layered inorganic-based flame retardants. The results indicate that the incorporation of layered in-organic based flame retardants can improve the thermal stability and residual yield at high temperature, flame retardancy and smoke suppression. The improved flame retardancy and smoke suppression performances were mainly ascribed to layered inorganic based flame retardants with excellent lamellar barrier effect and outstanding catalytic carbonization performance, which was propitious to form compact and stiff carbonaceous ceramic layer, and suppressed efficiently the heat and mass transmission between polymer nanocomposites and flame zone.
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    Effects of Nitric Acid Activation on Textural, Surface, and Supercapacitive Properties of Ultra-Small Carbon Nanospheres
    Zhe Chen, Zhibin Ye
    General Chemistry. 2019, 5 (1): 180023-180023.   DOI: 10.21127/yaoyigc20180023
    Abstract   PDF (4730KB) ( )
    Chemical activation of carbon materials is critical to modify their textural and surface properties in an effort to optimize their supercapacitive performance as electrode materials for supercapacitors. This present work investigates the effects of nitric acid activation on the textural, surface, and supercapacitive properties of ul-tra-small carbon nanospheres with a uniform size of 24 nm synthesized through a unique catalytic emulsion polymerization strategy. Nitric acid activation has been undertaken at different temperatures for various time. The effects of these two activation parameters have been systematically examined, with some important cor-relations established. The optimum activation conditions for achieving the best supercapacitive performance in different aqueous electrolytes have been identified.
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