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首页> 外文期刊>Crystal growth & design >Investigation of Charge-Transfer Interaction in Mixed Stack Donor-Acceptor Cocrystals Toward Tunable Solid-State Emission Characteristics
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Investigation of Charge-Transfer Interaction in Mixed Stack Donor-Acceptor Cocrystals Toward Tunable Solid-State Emission Characteristics

机译：混合堆栈供体 - 受体酰基对可调谐固态发射特性的电荷转移相互作用研究

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摘要

The formation of three mixed binary charge transfer (CT) cocrystals with tunable photoluminescence behavior featuring both CT interaction and directional hydrogen bonding is presented. Our strategy consists of the CT induced cocrystallization of three polycyclic (naphthalene, anthracene, and pyrene) carrying a-cyanostilbene (CS) derivatives, namely, 3-(naphthalene-2-yl)-2-(p-tolyl) acrylonitrile (NPA), 3-(anthracene-9-yl)-2-phenylacrylonitrile (APA), and 2-(4-methoxyphenyl)-3-(pyrene-I-yl) acrylonitrile (MPA) as donors (D) with 1,2,4,5-tetracyanobenzene (TCNB) as an acceptor (A). The as prepared cocrystals were probed in detail by various analytical techniques, namely, X-ray diffraction data, vibrational spectroscopy, diffuse reflectance absorption spectroscopy, fluorescence properties, and fluorescence quantum yields and lifetimes, affirming the formation of CT complexes. Complex IA features a mixed stack arrangement (D-A-D-A-D), while IIA and IIIA revealed (DAD-DAD) stack arrangement. The CT products showed distinct tunable emission colors and photoluminescence characteristics, which is closely associated with the CT interactions between the donor and acceptor moiety, and ionization potential or the it pi-electron rich character of the polycyclic moiety of the donor molecule. This research demonstrates the development of new hybrid CT functional materials with enhanced optical properties such as absorption, fluorescence emissions, and lifetimes compared to the pristine donors, which is important for the exploration of new solid-state luminescent materials.
机译：提出了具有CT相互作用和定向氢键的可调谐光致发光行为的三种混合二元电荷转移（CT）烯库的形成。我们的策略包括CT诱导的三个多环（萘，芘和芘）携带氰蛋白（CS）衍生物，即3-（萘-2-基）-2-（对甲苯基）丙烯腈（NPA ），3-（蒽-9-基）-2-苯基丙烯腈（APA）和2-（4-甲氧基苯基）-3-（芘-1-炔基）丙烯腈（MPa），为供体（D），1,2 ，4,5-四环苯（TCNB）作为受体（A）。通过各种分析技术，即X射线衍射数据，振动光谱，漫射反射吸收光谱，荧光性质和荧光量子产量和寿命，探测如制备的聚碳酸酯，肯定了CT复合物的形成。复杂的IA具有混合堆叠布置（D-A-D-A-D），而IIA和IIIA揭示（爸爸爸爸）堆叠装置。 CT产品显示出明显的可调谐发光颜色和光致发光特性，与供体和受体部分之间的CT相互作用密切相关，以及供体分子的多环部分的电离电位或其富含多环部分的富含性特征。该研究表明，与原始供体相比，具有增强的光学性质，具有增强的光学性能，如吸收，荧光排放和寿命，这对于探索新的固态发光材料是重要的。

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  • 来源
    《Crystal growth & design》 |2018年第10期|共8页
  • 作者

    Usman Rabia; Khan Arshad; Wang Mingliang; Luo Yi; Sun Weiwei; Sun Hao; Du Cunbin; He Nongyue;

  • 作者单位

    Southeast Univ Sch Chem &

    Chem Engn Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ State Key Lab Bioelect Nanjing 210096 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Mat Sci &

    Engn Jiangsu Key Lab Adv Metall Mat Nanjing 211189 Jiangsu Peoples R China;

    KTH Royal Inst Technol Dept Mat Sci &

    Engn SE-10044 Stockholm Sweden;

    Southeast Univ Sch Chem &

    Chem Engn Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ Sch Chem &

    Chem Engn Nanjing 211189 Jiangsu Peoples R China;

    Southeast Univ State Key Lab Bioelect Nanjing 210096 Jiangsu Peoples R China;

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  • 正文语种 eng
  • 中图分类 晶体学;
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