《Exploitation of two-dimensional conjugated covalent organic frameworks based on tetraphenylethylene with bicarbazole and pyrene units and applications in perovskite solar cells》 was published in Journal of Materials Chemistry A: Materials for Energy and Sustainability in 2020. These research results belong to Mohamed, Mohamed Gamal; Lee, Chia-Chen; El-Mahdy, Ahmed F. M.; Luder, Johann; Yu, Ming-Hsuan; Li, Zhen; Zhu, Zonglong; Chueh, Chu-Chen; Kuo, Shiao-Wei. Computed Properties of C12H7Br2N The article mentions the following:
In this work, two-dimensional conjugated covalent organic frameworks (2D-COF) based on a building block of tetraphenylethylene are successfully developed. Bicarbazole and pyrene moieties are resp. coupled with 4,4′,4′′,4′′′-(ethane-1,1,2,2-tetrayl)tetranilino (ETTA) via [4 + 4] solvothermal condensation conditions of 3,3′,6,6′-tetraformyl-9,9′-bicarbazole (Car-4CHO) and 1,3,6,8-tetrakis(4-formylphenyl)pyrene (TFPPy) to afford Car-ETTA and TFPPy-ETTA COFs. According to thermogravimetric anal. (TGA), powder X-ray diffraction (PXRD), and N2 adsorption and desorption measurements, both Car-ETTA and TFPPy-ETTA COFs exhibit excellent thermal stability, highly crystalline structure, and high sp. surface area, resp. These findings are supported by force field and ab initio calculations Furthermore, successful applications of these COFs in perovskite solar cells (PVSCs) are demonstrated owing to their well-conjugated properties and π-π interactions. While serving as interlayers in the devices, these COFs could effectively promote the interfacial charge dynamic to further optimize the resulting performance. Besides, certain interaction between COFs and perovskite also leads to an improved morphol. and crystallinity of the perovskite layer, presenting defect passivation capability. As a result, it is shown that the performance of the COF-modified PVSC could be improved from 17.40-19.80%. After reading the article, we found that the author used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Computed Properties of C12H7Br2N)
3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.Computed Properties of C12H7Br2N
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary