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Coumarins, in general, are less soluble and prone to aggregation limiting their application in aqueous medium. To mitigate this issue, the host\u2013guest interaction between coumarin 30 (C30) and sulfobutylether\n                    <jats:italic>\u03b2<\/jats:italic>\n                    \u2010cyclodextrin (SBE\n                    <jats:sub>7<\/jats:sub>\n                    \u03b2CD)\u2010stabilized gold nanoparticles (AuNP\u2010SBE\n                    <jats:sub>7<\/jats:sub>\n                    \u03b2CD) has been explored as an effective strategy to demonstrate utility of self\u2010assembled coumarin dye conjugate in aqueous medium. Surface\u2010functionalized gold nanoparticles received massive response from the researchers in the areas such as drug delivery systems, biological detection, sensing technologies, and bioimaging applications, showcasing their potential across various scientific and medical fields. Gold nanoparticles coated with SBE\n                    <jats:sub>7<\/jats:sub>\n                    \u03b2CD demonstrated improvement in their stability where surface functionalization reduces the coagulating tendency of gold nanoparticles by acting as a stabilizer. The AuNP\u2010SBE\n                    <jats:sub>7<\/jats:sub>\n                    \u03b2CD macrocycle interacts with C30 dye with a binding constant of the order of \u223c10\n                    <jats:sup>9<\/jats:sup>\n                    M\n                    <jats:sup>\u22121<\/jats:sup>\n                    leading to significant enhancement in the fluorescence intensity and average fluorescence lifetime of C30 through the confinement inside the hydrophobic cavity of SBE\n                    <jats:sub>7<\/jats:sub>\n                    \u03b2CD attached to the surface of AuNP. Complex formed with AuNP\u2010SBE\n                    <jats:sub>7<\/jats:sub>\n                    \u03b2CD:C30 showed better photostability allowing prolonged bioimaging when captured with gut of\n                    <jats:italic>Drosophila<\/jats:italic>\n                    fly.\n                  <\/jats:p>","DOI":"10.1002\/cphc.70487","type":"journal-article","created":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T04:00:15Z","timestamp":1783569615000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Sulfobutylether \u03b2\u2010Cyclodextrin\u2010Draped Gold Nanoparticles With Coumarin 30: Enhanced Fluorescence Behavior and Photostability"],"prefix":"10.1002","volume":"27","author":[{"given":"Monika","family":"Gaur","sequence":"first","affiliation":[{"name":"Radiation &amp; Photochemistry Division Bhabha Atomic Research Centre  Mumbai India"},{"name":"Homi Bhabha National Institute Training School Complex  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