Charge Transport Anisotropy in n-Type Disk-Shaped Triphenylene-Tris(aroyleneimidazole)s
摘要:
Two novel n-type disk-shaped molecules containing a triphenylene core and three fused naphthaleneimide imidazole or peryleneimide imidazole "arms" are synthesized and characterized. The n-type charge carrier mobilities of these molecules are evaluated by both field effect transistors and space-charge limited-current measurements, which exhibit drastically different mobility anisotropy. A strong correlation between film morphology and the charge transport behavior is established by X-ray scattering and atomic force microscopic analyses.
申请人:KOREA INSTITUTE OF ENERGY RESEARCH 한국에너지기술연구원(319999002255) BRN ▼314-82-02242
公开号:KR20210070226A
公开(公告)日:2021-06-14
2 개의 유기 리간드를 포함하는 금속-유기 골격체의 제조방법 및 상기 제조방법에 따라 제조된 금속-유기 골격체가 개시된다. 상기 금속-유기 골격체는 높은 다공도 및 우수한 전기 전도도를 가지기 때문에 이를 슈퍼커패시터 또는 이차전지 등의 전극에 사용 시 상기 소자의 에너지밀도 및 출력특성 등을 향상시킬 수 있다.
COMPOSITIONS AND METHODS COMPRISING CONDUCTIVE METAL ORGANIC FRAMEWORKS AND USES THEREOF
申请人:Massachusetts Institute of Technology
公开号:US20170073364A1
公开(公告)日:2017-03-16
Compositions and methods comprising metal organic frameworks (MOFs) and related uses are generally provided. In some embodiments, a MOF comprises a plurality of metal ions, each coordinated with at least one ligand comprising at least two sets of ortho-diimine groups arranged about an organic core.
A Trinuclear Iron(III) Complex of a Triple Noninnocent Ligand for Spin‐Structured Molecular Conductors
作者:Norihisa Hoshino、Tomoyuki Akutagawa
DOI:10.1002/chem.201804280
日期:2018.12.20
Fe3+ ions are coordinated by the triangular hptp6− bridging ligand at its apices. Cyclic voltammetry of (PPh4)3[FeIII3(hptp)6(CN)6] in PhCN solution showed one reductive wave for 3 Fe2+/3 Fe3+ and three oxidative waves for the hptp6− ligand. The controlled‐potential electronic spectra of the solution presented broad absorption bands in the near‐IR (NIR) region for oxidations because a π‐radical is generated
N,N′,N′ ',N ′′′,N ′′′′,N ′′′′′-(Triphenylene‐2,3,6,7,10,11-hexayl)hexapicolinamide(H 6 hptp)制备了包含三个非纯配位点的三角形配体及其三核铁(III)络合物(PPh 4)3 [Fe III 3(hptp)6(CN)6 ]。在这种复合物中,三个低自旋的Fe 3+离子在其顶点处被三角形的hptp 6−桥联配体配位。(PPh 4)3 [Fe III 3(hptp)6的循环伏安法PhCN溶液中的(CN)6 ]对3 Fe 2+ / 3 Fe 3+显示一个还原波,对hptp 6-配体显示三个氧化波。由于在hptp 6−配体上生成了π自由基,该溶液的受控电位电子光谱在近IR(NIR)区域呈现出宽的吸收带。冷冻溶液的EPR光谱还显示出较大的氧化态依赖性差异,这是由于Fe 3+离子d轨道中的电子与hptp 6-配体中的
A Robust <i>n</i>‐<i>n</i> Heterojunction: CuN and BN Boosting for Ambient Electrocatalytic Nitrogen Reduction to Ammonia
作者:Jiameng Liu、Linghao He、Shuangrun Zhao、Lijun Hu、Sizhuan Li、Zhihong Zhang、Miao Du
DOI:10.1002/smll.202302600
日期:2023.10
An n-n type heterojunction comprising with CuN and BN dual active sites is synthesized via in situ growth of a conductive metal–organicframework (MOF) [Cu3(HITP)2] (HITP = 2,3,6,7,10,11-hexaiminotriphenylene) on hexagonal boron nitride (h-BN) nanosheets (hereafter denoted as Cu3(HITP)2@h-BN) for the electrocatalytic nitrogen reductionreaction (eNRR). The optimized Cu3(HITP)2@h-BN shows the outstanding
通过原位生长导电金属有机骨架(MOF)[Cu 3 (HITP) 2 ](HITP = 2,3,6)合成了包含 Cu N 和 B N 双活性位点的n - n型异质结。 ,7,10,11-六亚氨基苯并菲)在六方氮化硼(h -BN)纳米片(以下表示为Cu 3 (HITP) 2 @ h -BN)上用于电催化氮还原反应(eNRR)。优化的 Cu 3 (HITP) 2 @ h -BN 显示出出色的 eNRR 性能,由于高孔隙率、丰富的氧空位和 Cu,NH 3产量为 146.2 µg h −1 mg cat −1 ,法拉第效率为 42.5% N/B N 个双活性位点。n - n异质结的结构有效地将活性金属位点的态密度调节到费米能级,促进催化剂和反应物中间体之间界面的电荷转移。此外,通过原位FT-IR光谱和密度泛函理论计算说明了Cu 3 (HITP) 2 @ h -BN异质结催化NH 3生产的途径。这项工作提出了一种基于导电
Poly(benzimidazobenzophenanthroline)‐Ladder‐Type Two‐Dimensional Conjugated Covalent Organic Framework for Fast Proton Storage**
Electrochemical proton storage plays an essential role in designing next‐generation high‐rate energy storage devices, e.g., aqueous batteries. Two‐dimensional conjugated covalent organic frameworks (2D c‐COFs) are promising electrode materials, but their competitive proton and metal‐ion insertion mechanisms remain elusive, and proton storage in COFs is rarely explored. Here, we report a perinone‐based poly(benzimidazobenzophenanthroline) (BBL)‐ladder‐type 2D c‐COF for fast proton storage in both a mild aqueous Zn‐ion electrolyte and strong acid. We unveil that the discharged C−O− groups exhibit largely reduced basicity due to the considerable π‐delocalization in perinone, thus affording the 2D c‐COF a unique affinity for protons with fast kinetics. As a consequence, the 2D c‐COF electrode presents an outstanding rate capability of up to 200 A g−1 (over 2500 C), surpassing the state‐of‐the‐art conjugated polymers, COFs, and metal–organic frameworks. Our work reports the first example of pure proton storage among COFs and highlights the great potential of BBL‐ladder‐type 2D conjugated polymers in future energy devices.