A New Triazine‐Based Covalent Organic Framework for High‐Performance Capacitive Energy Storage

Abstract

The new covalent organic framework material TDFP-1 was prepared through a solvothermal Schiff base condensation reaction of the monomers 1,3,5-tris-(4-aminophenyl)triazine and 2,6-diformyl-4-methylphenol. Owing to its high specific surface area of 651 m g , extended π conjugation, and inherent microporosity, TDFP-1 exhibited an excellent energy-storage capacity with a maximum specific capacitance of 354 F g at a scan rate of 2 mV s and good cyclic stability with 95 % retention of its initial specific capacitance after 1000 cycles at 10 A g . The π-conjugated polymeric framework as well as ionic conductivity owing to the possibility of ion conduction inside the micropores of approximately 1.5 nm make polymeric TDFP-1 a favorable candidate as a supercapacitor electrode material. The electrochemical properties of this electrode material were measured through cyclic voltammetry, galvanic charge-discharge, and electrochemical impedance spectroscopy, and the results indicate its potential for application in energy-storage devices.

A Hollow Microtubular Triazine‐ and Benzobisoxazole‐Based Covalent Organic Framework Presenting Sponge‐Like Shells That Functions as a High‐Performance Supercapacitor

“…Bhanja et al. reported TDFP‐1 exhibiting a capacitance of 418 F g −1 at 0.5 A g −1 with 95 % capacitance retention after 1000 cycles at 10 A g −1 . Moreover, Das et al.…”

Light induced construction of porous covalent organic polymeric networks for significant enhancement of CO2 gas sorption

“…[1][2][3][4][5] Inspired by natural zeolite structures, researchers are working to develop porous materials for effective CO 2 capture. Porous materials, such as covalent organic polymers (COPs), [6][7][8][9][10][11] metal-organic frameworks (MOFs) 12 and covalent organic frameworks (COFs) 13,14 with miscellaneous properties and applications have attracted great attention in materials science research. Porous covalent polymers are used as effective CO 2 sorption materials due to their ultra-high hydrothermal stability.…”

“…ESI-MS: calcd for [C 30 H 32 N 2 O 6 + Na] + 539.2158, found 539.2088. Compound 12 was obtained as a white solid (393 mg, 0.46 mmol, 64%).1 H-NMR (400 MHz, CDCl 3 ): d 8.2 (d, 1H, J ¼ 8 Hz, NH of Leu), 7.73 (d, 1H, J ¼ 8 Hz, NH of Leu), 7.67 (d, 1H, J ¼ 8 Hz, NH of Phe), 7.57 (d, 1H, J ¼ 8 Hz, NH of Phe), 7.42-6.32 (m, 18 Hs of aromatic ring), 4.84 (m, 2H, C a Hs of Phe), 4.45 (m, 2H, C a Hs of Leu), 3.15 (m, 2H, C b Hs of Phe), 3.05 (m, 2H, C b Hs of Phe), 1.7 (m, 4H, C b Hs of Leu), 1.24 (m, 2H, C g Hs of Leu), 0.91 (m, 12H, C d Hs of Leu) ppm 13. C NMR (100 MHz, CDCl 3 ): d 171.47, 157.00, 129.56, 128.90, 127.46, 60.70, 53.43, 52.63, 48.47, 38.16, 34.26, 26.24, 25.24, 25.03, 23.50, 21.36, 14.50 ppm.…”

“…FT-IR (KBr, n, cmÀ1 ): 3284 (N-H, amide A), 1761 (C]O, free carboxylic), 1621 (C]O, amide I), 1536 (N-H, amide II). 1 H-NMR (400 MHz, DMSO-d 6 ): d 12.62 (m, 2H, COOH), 9.18 (s, 2H, phenolic-OH of Tyr), 8.52 (d, 2H, J ¼ 8 Hz, NH of Tyr), 8.03 (d, 2H, J ¼ 8 Hz, NH), 7.88 (d, 2H, J ¼ Hz, aromatic Hs), 7.58 (d, J ¼ 8 Hz, 2H, aromatic Hs), 7.00 (d, 4H, J ¼ 8 Hz, 4H of Tyr aromatic ring), 6.61 (d, 4H, J ¼ 8 Hz, 4H of Phe aromatic ring), 4.55 (d, 2H, J ¼ 8 Hz, C a Hs of Tyr), 4.38 (d, 2H, J ¼ 8 Hz, C a Hs of Leu), 2.94 (m, 2H, C b Hs of Tyr), 2.91 (m, 2H, C b Hs of Tyr), 1.52 (m, 4H, C b Hs of Leu), 1.25 (m, 2H, C g Hs of Leu), 0.90 (m, 12H, C d Hs of Leu) ppm 13. C NMR (100 MHz, DMSO-d 6 ): d 178.06, 177.12, 170.70, 161.12, 139.43, 136.76, 135.29, 133.03, 132.61, 129.70, 120.15, 88.15, 88.06, 58.88, 56.84, 41.04, 29.57, 26.27, 26.64 ppm.…”

Band Structure Engineering of Schiff‐Base Microporous Organic Polymers for Enhanced Visible‐Light Photocatalytic Performance

“…On account of the well‐defined porosities and large surface areas, MOPs demonstrate excellent performance for gas storage and gas separation . Moreover, MOPs with incorporated heteroatoms such as S, N, O have unique physical and chemical characteristics, which can be rationally applied in catalysis, photoconductivity devices, sensors, and energy‐storage materials . Among these polymers, Schiff‐base networks (SBNs) can be easily fabricated through reaction between melamine and terephthalaldehyde.…”