A Carbocationic Triarylmethane-Based Porous Covalent Organic Network |
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| Authors: | Sunny K S Freitas Felipe L Oliveira Thiago C dos Santos Danilo Hisse Claudia Merlini Célia M Ronconi Prof?Dr Pierre M Esteves |
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| Institution: | 1. Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, 149, CT, A-622, Cid. Univ., 21941-909 Rio de Janeiro, Brazil;2. Departamento de Química Inorgânica, Universidade Federal Fluminense, Campus do Valonguinho, Outeiro São João Batista s/n, Centro, 24020-150 Niterói, RJ, Brazil;3. Coordenadoria Especial de Engenharia de Materiais, Universidade Federal de Santa Catarina, Rua João Pessoa, 2750, Bairro Velho, 89036-002 Blumenau, SC, Brazil |
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| Abstract: | A thermally stable carbocationic covalent organic network (CON), named RIO-70 was prepared from pararosaniline hydrochloride, an inexpensive dye, and triformylphloroglucinol in solvothermal conditions. This nanoporous organic material has shown a specific surface area of 990 m2 g?1 and pore size of 10.3 Å. The material has CO2 uptake of 2.14 mmol g?1 (0.5 bar), 2.7 mmol g?1 (1 bar), and 6.8 mmol g?1 (20 bar), the latter corresponding to 3 CO2 molecules adsorbed per pore per sheet. It is shown to be a semiconductor, with electrical conductivity (σ) of 3.17×10?7 S cm?1, which increases to 5.26×10?4 S cm?1 upon exposure to I2 vapor. DFT calculations using periodic conditions support the findings. |
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| Keywords: | carbocation covalent organic network dye porous materials |
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