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Cetina-Mancilla E, González-Díaz MO, Sulub-Sulub R, Zolotukhin MG, González A, Herrera-Kao W, Ruiz-Treviño FA, Aguilar-Vega M. Aging resistant, fluorinated aromatic polymers with ladderized, rigid kink-structured backbones for gas separations. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Weng Y, Li Q, Li J, Gao Z, Zou L, Ma X. Facile synthesis of Bi-functionalized intrinsic microporous polymer with fully carbon backbone for gas separation application. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119681] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Esteban N, Ferrer ML, Ania CO, de la Campa JG, Lozano ÁE, Álvarez C, Miguel JA. Porous Organic Polymers Containing Active Metal Centers for Suzuki-Miyaura Heterocoupling Reactions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:56974-56986. [PMID: 33305572 DOI: 10.1021/acsami.0c16184] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A new generation of confined palladium(II) catalysts covalently attached inside of porous organic polymers (POPs) has been attained. The synthetic approach employed was straightforward, and there was no prerequisite for making any modification of the precursor polymer. First, POP-based catalytic supports were obtained by reacting one symmetric trifunctional aromatic monomer (1,3,5-triphenylbenzene) with two ketones having electron-withdrawing groups (4,5-diazafluoren-9-one, DAFO, and isatin) in superacidic media. The homopolymers and copolymers were made using stoichiometric ratios between the functional groups, and they were obtained with quantitative yields after the optimization of reaction conditions. Moreover, the number of chelating groups (bipyridine moieties) available to bind Pd(II) ions to the catalyst supports was modified using different DAFO/isatin ratios. The resulting amorphous polymers and copolymers showed high thermal stability, above 500 °C, and moderate-high specific surface areas (from 760 to 935 m2 g-1), with high microporosity contribution (from 64 to 77%). Next, POP-supported Pd(II) catalysts were obtained by simple immersion of the catalyst supports in a palladium(II) acetate solution, observing that the metal content was similar to that theoretically expected according to the amount of bipyridine groups present. The catalytic activity of these heterogeneous catalysts was explored for the synthesis of biphenyl and terphenyl compounds, via the Suzuki-Miyaura cross-coupling reaction using a green solvent (ethanol/water), low palladium loads, and aerobic conditions. The findings showed excellent catalytic activity with quantitative product yields. Additionally, the recyclability of the catalysts, by simply washing it with ethanol, was excellent, with a sp2-sp2 coupling yield higher than 95% after five cycles of use. Finally, the feasibility of these catalysts to be employed in tangible organic reactions was assessed. Thus, the synthesis of a bulky compound, 4,4'-dimethoxy-5'-tert-butyl-m-terphenylene, which is a precursor of a thermal rearrangement monomer, was scaled-up to 2 g, with high conversion and 96% yield of the pure product.
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Affiliation(s)
- Noelia Esteban
- IU CINQUIMA, Universidad de Valladolid, Paseo Belén 5, E-47011 Valladolid, Spain
| | - María L Ferrer
- Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, ICMM-CSIC, Campus de Cantoblanco, 28049 Madrid, Spain
| | - Conchi O Ania
- CEMHTI CNRS (UPR 3079), University of Orléans, 45071 Orléans, France
| | - José G de la Campa
- Department of Applied Macromolecular Chemistry, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
| | - Ángel E Lozano
- Department of Applied Macromolecular Chemistry, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
- SMAP, UA-UVA_CSIC, Associated Research Unit to CSIC, Universidad de Valladolid, Paseo Belén 7, E-47011 Valladolid, Spain
| | - Cristina Álvarez
- Department of Applied Macromolecular Chemistry, Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, E-28006 Madrid, Spain
- SMAP, UA-UVA_CSIC, Associated Research Unit to CSIC, Universidad de Valladolid, Paseo Belén 7, E-47011 Valladolid, Spain
| | - Jesús A Miguel
- IU CINQUIMA, Universidad de Valladolid, Paseo Belén 5, E-47011 Valladolid, Spain
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González-Díaz MO, Cetina-Mancilla E, Sulub-Sulub R, Montes-Luna A, Olvera LI, Zolotukhin MG, Cárdenas J, Aguilar-Vega M. Novel fluorinated aromatic polymers with ether-bond-free aryl backbones for pure and mixed gas separation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118114] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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