Covalent organic framework based on melamine and dibromoalkanes for versatile use

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dc.authoridDemirci, Şahin / 0000-0001-7083-1481
dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.authoridSel, Kıvanç / 0000-0002-4623-5206
dc.contributor.authorŞahiner, Nurettin
dc.contributor.authorDemirci, Şahin
dc.contributor.authorSel, Kıvanç
dc.date.accessioned2025-01-27T20:35:10Z
dc.date.available2025-01-27T20:35:10Z
dc.date.issued2016
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractCovalent organic frameworks (COFs), based on melamine and dibromoalkanes [Br(CH2)(n)Br] with n = 2, 4, 6, and 8 for 1,2-dibromoethane, 1,4-dibromobutane, 1,6-bibromohexane and 1,8-dibromooctane as COF-1,2, COF-1,4, COF-1,6, COF-1,8, were synthesized in dimethyl sulfoxide at 150 A degrees C. The COFs had distinct color depending on the number of C atoms (n) in the dibromoalkanes e.g., light-yellow, intense yellow, brown and dark brown for COF-1,2, COF-1,4, COF-1,6, and COF-1,8, respectively. Furthermore, it was demonstrated that COF-1,2 and COF-1,4 COFs can be used as a template for in situ Co metal nanoparticle preparation by loading CoCl2 salt from ethanol solution into COFs and then treating with NaBH4 solution. Then the prepared catalyst systems of COF-1,2-Co and COF-1,4-Co were tested for H-2 generation from hydrolysis of NaBH4. The COF-1,2-Co composite materials showed better catalyst performance than COF-1,4-Co composite in the hydrolysis of NaBH4. The hydrogen generation rates (HGR) and turnover frequency values were calculated as 1589 and 594 ml H-2/(g of catalyst) x (min) HGR values, and 3.75 and 1.41 mol H-2/(mol catalyst min) for COF-1,2-Co and COF-1,4-Co composite materials, respectively. The room temperature conductivities were measured and the highest conductivity was measured as 2.26E-07 S cm(-1) for COF-1,2-(CoCl2). The COF also had fluorescent properties and their emission wavelengths reduced in the presence of Co nanoparticles depending on the n values of the dibromoalkanes.
dc.identifier.doi10.1007/s10934-016-0160-9
dc.identifier.endpage1035
dc.identifier.issn1380-2224
dc.identifier.issn1573-4854
dc.identifier.issue4
dc.identifier.scopus2-s2.0-84961205939
dc.identifier.scopusqualityQ2
dc.identifier.startpage1025
dc.identifier.urihttps://doi.org/10.1007/s10934-016-0160-9
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23588
dc.identifier.volume23
dc.identifier.wosWOS:000379169400020
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Porous Materials
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectPorous COF
dc.subjectCOF composites
dc.subjectIL COFs
dc.subjectConductive COFs
dc.subjectFluorescent COFs
dc.titleCovalent organic framework based on melamine and dibromoalkanes for versatile use
dc.typeArticle

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