Synthesis and Characterization of Viologen Based Covalent Organic Framework

Altınışık S., Koyuncu S.

2nd International Natural Science, Engineering and Material Technologies Conference, Kırklareli, Türkiye, 15 - 17 Eylül 2022, ss.30

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Kırklareli
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.30
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet

Özet

Since they were first reported by Yaghi and coworkers in 2005 [1], covalent organic framework (COF) structures have been used in numerous applications, including catalysis [2], gas separation [3], gas storage [4] and energy storage [5]. The excellent performance of COFs with low density, high surface area, thermal stability, persistent porosity and simple functional design makes their of significant technological value. In particular, COFs are also used as a new type of photocatalyst for hydrogen production due to their high thermal and chemical stability [6]. Viologens are n-type functional organic molecules composed of conjugated bi-/multi-pyridyl with quaternary salt. In many optoelectronic applications, viologens provide significant electron transport capabilities, particularly in electrochromic and photochromic devices [7]. Viologens have been integrated into a wide range of novel and well-known materials (such as host-guest supramolecules, porous polymers, covalent- and metal-organic frameworks) as a result of the rapid development of functional materials in the twenty-first century but viologens do not yet appear to be a major player in the technology in which such COFs are used. In this study, it was aimed to synthesis and characterize the viologen-based COF (COF-TPCBP) structure. The viologen-based covalent organic framework was synthesized using the Suzuki-Miyaura reactions. This structure was characterized using FT-IR, TGA, AFM, TEM and XRD techniques.

[1] A. P. Côté, A. I. Benin, N. W. Ockwig, M. Keeffe, A. J. Matzger and O. M. Yaghi, Porous, Crystalline, Covalent Organic Frameworks, Science, 310, 5751, 1166-1170 (2005). [2] J. Guo and D. Jiang, Covalent Organic Frameworks for Heterogeneous Catalysis: Principle, Current Status, and Challenges, ACS Cent. Sci., 6, 6, 869-879 (2020). [3] H. Fan, A. Mundstock, A. Feldhoff, A. Knebel, J. Gu, H. Meng, and J. Caro, Covalent Organic Framework-Covalent Organic Framework Bilayer Membranes for Highly Selective Gas Separation, J. Am. Chem. Soc., 140, 32, 10094-10098 (2018). [4] H. Furukawa and O. M. Yaghi, Storage of Hydrogen, Methane, and Carbon Dioxide in Highly Porous Covalent Organic Frameworks for Clean Energy Applications, J. Am. Chem. Soc., 131, 25, 8875-8883 (2009). [5] P. Bhanja, K. Bhunia, S. K. Das, D. Pradhan, R. Kimura, Y.Hijikata, S. Irle, A. Bhaumik, A New Triazine-Based Covalent Organic Framework for High-Performance Capacitive Energy Storage, ChemSusChem, 10, 5, 921-929 (2017). [6] L. Stegbauer, K. Schwinghammer and B. V. Lotsch, A hydrazone-based covalent organic framework for photocatalytic hydrogen production, Chemical Science, 5, 2789-2793 (2014). [7] K. Madasamy, D. Velayutham, V. Suryanarayanan, M. Kathiresan and K. Ho, Viologen-based electrochromic materials and devices, J. Mater. Chem. C, 7, 4622-4637 (2019).