{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1883680965904079488.json","@type":"Dataset","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.34804/supra.20210928306"}}],"dc:title":[{"@value":"Photophysical Properties and Rotational Relaxation Dynamics of Neutral Red Bound to β-Cyclodextrin"}],"dc:language":"en","description":[{"notation":[{"@value":"Photophysical properties and the rotational relaxation dynamics of a phenazine based dye, neutral red, have been investigated in aqueous solutions in the presence of β-cyclodextrin (β-CD) using ground-state absorption and steady-state and time-resolved fluorescence measurements. It has been observed that while the neutral form (NR) of the dye forms an inclusion complex with β-CD, its protonated form (NRH+) does not. In the presence of β-CD (10 mM), the pKa value of the dye is estimated to be about 6.06 ± 0.05, much lower than the pKa value of 6.81 ± 0.05 measured in aqueous solution. Both photophysical properties and the rotational relaxation dynamics of NR undergo substantial changes in the presence of β-CD. Steady-state and time-resolved fluorescence studies suggest simultaneous formation of 1:1 and 1:2 complexes of NR/β-CD in aqueous solutions. Time-resolved fluorescence anisotropy measurements confirm that only NR forms an inclusion complex with β-CD and the NR/β-CD complex rotates as a whole with a relaxation time much longer than that observed for free NR in aqueous solution."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1893680965904079491","@type":"Researcher","foaf:name":[{"@value":"Pal, H."}]},{"@id":"https://cir.nii.ac.jp/crid/1893680965904079488","@type":"Researcher","foaf:name":[{"@value":"Koti, A. S. R."}]},{"@id":"https://cir.nii.ac.jp/crid/1893680965904079490","@type":"Researcher","foaf:name":[{"@value":"Singh, M. K."}]},{"@id":"https://cir.nii.ac.jp/crid/1893680965904079489","@type":"Researcher","foaf:name":[{"@value":"Sapre, A. V."}]}],"publication":{"dc:publisher":[{"@value":"SupraBank"}],"prism:publicationDate":"2024-01-01"},"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360576118798707584","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Synthesis of Silica Nanoparticles with Physical Encapsulation of Near-Infrared Fluorescent Dyes and Their Tannic Acid Coating"}]}],"dataSourceIdentifier":[{"@type":"OPENAIRE","@value":"doi_________::cf7bbb3b617cdc1a73cfd1ee9e4052f8"}]}