title: Fluorescence quenching of 1,4-dihydroxy-2,3-dimethyl-9,10-anthraquinone by silver nanoparticles: size effect.
abstract: Size effect of silver nano particles on the photophysical properties of 1,4-dihydroxy-2,3-dimethyl-9,10-anthraquinone (DHDMAQ) have been investigated using optical absorption and fluorescence emission techniques. Silver nanoparticles of different sizes have been prepared by Creighton method using magnetic stirrer and ultrasonic field. Quenching of fluorescence of DHDMAQ has been found to increase with decrease in the size of the silver nanoparticles. Stern-Volmer quenching constants have also been calculated.
authors.affiliation: Department of Physics, Mother Teresa Women's University, Kodaikanal, 624 102, Tamil Nadu, India. ums10@yahoo.com
authors.forename: M
authors.initials: M
authors.lastname: Umadevi
authors.forename: P
authors.initials: P
authors.lastname: Vanelle
authors.forename: T
authors.initials: T
authors.lastname: Terme
authors.forename: Beulah J M
authors.initials: BJ
authors.lastname: Rajkumar
authors.forename: V
authors.initials: V
authors.lastname: Ramakrishnan
mesh_terms: D000880:Anthraquinones / Q000737:chemistry*; D005453:Fluorescence; D053768:Metal Nanoparticles / Q000737:chemistry*; D015394:Molecular Structure; D010316:Particle Size; D011789:Quantum Theory; D012834:Silver / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: C540415:1,4-dihydroxy-2,3-dimethyl-9,10-anthraquinone; D000880:Anthraquinones; D012834:Silver