BN 嵌入式多环 π 共轭系统：合成、光电性能和光伏应用。,Frontiers in Chemistry

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BN 嵌入式多环 π 共轭系统：合成、光电性能和光伏应用。
Frontiers in Chemistry ( IF 3.8 ) Pub Date : 2018-08-07 , DOI: 10.3389/fchem.2018.00341
Jianhua Huang ₁ , Yuqing Li ₁

Affiliation

在元素周期表中，硼（B，原子序数，5）和氮（N，原子序数，7）与碳（C，原子序数，6）相邻。因此，两个碳（12）的总电子数等于一个硼（5）和一个氮（7）的电子和。因此，与全碳类似物相比，用 π 共轭结构中的 1 个硼和 1 个氮取代 2 个碳得到等电子系统，即 BN 扰动 π 共轭系统。与全碳类似物相比，BN 嵌入的 π 共轭系统具有独特的性质，例如光学吸收、发射、能级、带隙和堆积顺序，并且在新型合成、光物理表征和电子学方面得到了深入研究。近年来的应用。在这篇综述中，我们试图总结代表性的BN嵌入多环π共轭体系的合成方法、光电性能以及在有机光伏（OPV）应用中的进展。首先，从BN单元的一般介绍开始，即B←N配位键、BN共价键和NB←N基团。然后，总结了含B←N配位键、BN共价键和NB←N基团的π共轭体系的代表性合成策略。随后，将讨论典型BN嵌入π共轭体系的前沿轨道能级、光吸收、固态堆积顺序、电荷传输能力和光伏性能。最后，对BN掺杂π共轭体系OPV材料，特别是其在小分子有机太阳能电池中的潜在应用进行了展望。

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BN Embedded Polycyclic π-Conjugated Systems: Synthesis, Optoelectronic Properties, and Photovoltaic Applications.

In the periodic table of elements, boron (B, atomic number, 5) and nitrogen (N, atomic number, 7) are neighboring to the carbon (C, atomic number, 6). Thus, the total electronic number of two carbons (12) is equal to the electronic sum of one boron (5) and one nitrogen (7). Accordingly, replacing two carbons with one boron and one nitrogen in a π-conjugated structure gives an isoelectronic system, i.e., the BN perturbed π-conjugated system, comparing to their all-carbon analogs. The BN embedded π-conjugated systems have unique properties, e.g., optical absorption, emission, energy levels, bandgaps, and packing order in contrast to their all-carbon analogs and have been intensively studied in terms of novel synthesis, photophysical characterizations, and electronic applications in recent years. In this review, we try to summarize the synthesis methods, optoelectronic properties, and progress in organic photovoltaic (OPV) applications of the representative BN embedded polycyclic π-conjugated systems. Firstly, the narrative will be commenced with a general introduction to the BN units, i.e., B←N coordination bond, B-N covalent bond, and N-B←N group. Then, the representative synthesis strategies toward π-conjugated systems containing B←N coordination bond, B-N covalent bond, and N-B←N group will be summarized. Afterwards, the frontier orbital energy levels, optical absorption, packing order in solid state, charge transportation ability, and photovoltaic performances of typical BN embedded π-conjugated systems will be discussed. Finally, a prospect will be proposed on the OPV materials of BN doped π-conjugated systems, especially their potential applications to the small molecules organic solar cells.

更新日期：2019-11-01

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