{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Gong Y"],"funding":["South China Normal University","National Natural Science Foundation of China","Higher Education Discipline Innovation Project","Ministry of Education – Kingdom of Saudi Arabi"],"pagination":["30432-30438"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9073372"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["9(52)"],"pubmed_abstract":["In this study, a graphene-based composite 4HQ-rGO/Cu<sup>2+</sup> was prepared <i>via</i> the supramolecular assembly of graphene nanosheets with 4-hydroxyquinoline (4HQ) and copper(ii) ions. The as-prepared supramolecular assembly exhibited an excellent and enhanced sensing performance towards acetic acid at room-temperature, which was due to the fact that the D-π-A molecules, <i>i.e.</i> 4HQ, were able to accelerate the charge transfer between the graphene nanosheets and 4HQ molecules when acetic acid was attached. In addition, at room temperature, the copper(ii) ions also played a critical role as the main active site for gas adsorption, and thus the as-fabricated sensor exhibited a high response, outstanding selectivity, and ultra-fast response/recovery time. To examine the selectivity of the Cu<sup>2+</sup> ions for the supramolecular assembly, various other transition metal ions such as Mn<sup>2+</sup>, Fe<sup>3+</sup>, Co<sup>2+</sup>, Ni<sup>2+</sup>, Cu<sup>2+</sup>, and Cd<sup>2+</sup> were attached to the 4HQ-rGO assembly, and their acetic sensing performance was determined. Interestingly, the supramolecular assembly with the Cu<sup>2+</sup> ions (4HQ-rGO/Cu<sup>2+</sup>) exhibited the best sensing performance compared to other metal ion-based 4HQ-rGO materials. Compared with the typical acetic acid gas sensors reported in the literature, it is noteworthy to mention that the as-prepared 4HQ-rGO/Cu<sup>2+</sup> supramolecular assembly exhibited the shortest gas response time (within 5 s) at room temperature. The presented study demonstrates that the as-prepared supramolecular assembly is a promising material as a room temperature acetic acid gas sensor in practical applications."],"journal":["RSC advances"],"pubmed_title":["Assembly with copper(ii) ions and D-π-A molecules on a graphene surface for ultra-fast acetic acid sensing at room temperature."],"pmcid":["PMC9073372"],"funding_grant_id":["51973070","PCSED-004-18","51773069","51673007"],"pubmed_authors":["Li H","Umar A","Al-Assiri MS","Fan J","Frans de Rooij N","Zhou G","Wang Y","Gong Y","Pei W"],"additional_accession":[]},"is_claimable":false,"name":"Assembly with copper(ii) ions and D-π-A molecules on a graphene surface for ultra-fast acetic acid sensing at room temperature.","description":"In this study, a graphene-based composite 4HQ-rGO/Cu<sup>2+</sup> was prepared <i>via</i> the supramolecular assembly of graphene nanosheets with 4-hydroxyquinoline (4HQ) and copper(ii) ions. The as-prepared supramolecular assembly exhibited an excellent and enhanced sensing performance towards acetic acid at room-temperature, which was due to the fact that the D-π-A molecules, <i>i.e.</i> 4HQ, were able to accelerate the charge transfer between the graphene nanosheets and 4HQ molecules when acetic acid was attached. In addition, at room temperature, the copper(ii) ions also played a critical role as the main active site for gas adsorption, and thus the as-fabricated sensor exhibited a high response, outstanding selectivity, and ultra-fast response/recovery time. To examine the selectivity of the Cu<sup>2+</sup> ions for the supramolecular assembly, various other transition metal ions such as Mn<sup>2+</sup>, Fe<sup>3+</sup>, Co<sup>2+</sup>, Ni<sup>2+</sup>, Cu<sup>2+</sup>, and Cd<sup>2+</sup> were attached to the 4HQ-rGO assembly, and their acetic sensing performance was determined. Interestingly, the supramolecular assembly with the Cu<sup>2+</sup> ions (4HQ-rGO/Cu<sup>2+</sup>) exhibited the best sensing performance compared to other metal ion-based 4HQ-rGO materials. Compared with the typical acetic acid gas sensors reported in the literature, it is noteworthy to mention that the as-prepared 4HQ-rGO/Cu<sup>2+</sup> supramolecular assembly exhibited the shortest gas response time (within 5 s) at room temperature. The presented study demonstrates that the as-prepared supramolecular assembly is a promising material as a room temperature acetic acid gas sensor in practical applications.","dates":{"release":"2019-01-01T00:00:00Z","publication":"2019 Sep","modification":"2025-04-04T23:17:22.859Z","creation":"2025-04-04T23:17:22.859Z"},"accession":"S-EPMC9073372","cross_references":{"pubmed":["35530241"],"doi":["10.1039/c9ra05706d"]}}