Modulated photophysics of 2-anthracene sulphonate in micellar assembly

Rana, Dipak; Sarkar, Arindam; Dhar, Sayantan; Mandal, Tapas K.; Bhattacharya, Sumanta

doi:10.1016/j.jlumin.2010.02.005

Cited by 6 publications

(4 citation statements)

References 30 publications

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“…Materials. 2-AS was prepared by reducing the corresponding anthraquinone sulfonic acid with Zn dust and 20% NH 4 OH solution for 4−6 h. 50 The products were treated with active animal charcoal to remove traces of impurities and anthraquinone and then crystallized four times from water and obtained as sodium salt. The structure of 2-AS is given in the Figure S1 (Supporting Information).…”

Section: Methodsmentioning

confidence: 99%

Deciphering the Role of the Length of the Corona in Controlled NSET within Triblock Copolymers

2015

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Nanometal surface energy transfer (NSET) from 2-anthracene sulfonate (2-AS) to gold nanoparticles in watersoluble triblock copolymers (TBP) P123 (PEO 19 PPO 69 PEO 19 ) and F127 (PEO 100 PPO 65 PEO 100 ) is systematically investigated. Fluorescence lifetime and anisotropy experiments provide thorough information on the locations of the 2-AS within these micelles. Variation in the size of the micellar corona region of the TBP is found to be the prime factor for different positions of 2-AS in them. Of late, nanometal surface energy transfer (NSET) from the donor probe to the surface of the metal nanoparticles has emerged as a potential tool for sensing and biolabeling. In the present work, the quenching of emission of the water-soluble 2-AS confined in the two different triblock copolymers in the proximity of a monolayer of the gold nanoparticles has been explored. Closer agreement between the experimental and theoretical characteristic distances has been found across the full wavelength range by the NSET approach. Understanding the location of the water-soluble dye in the vicinity of a polymeric drug delivery system is of significant importance, and how altered locations can trigger different controlled energy transfer efficiency from the 2-AS to the surfaces of gold nanoparticles (GNPs) has been discussed. This strategy could offer a new prospect in designing novel optical materials for chemical sensing and light harvesting endeavors.

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Section: Methodsmentioning

confidence: 99%

Deciphering the Role of the Length of the Corona in Controlled NSET within Triblock Copolymers

2015

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“…The application of a surfactant to solubilize MgO nanoparticles provides a means to achieve control over the MgO nanoparticle size and size distribution in solution, which is essential for tailoring optical, electrical, chemical, and magnetic properties of nanoparticles for specific applications. Micelles have attracted significant attention because of their ability to function as encapsulating systems to provide selective microenvironments [14][15][16][17]. The surfactant selected in this study hydroxyethyl laurdimonium chloride (HY) classified as a typical cationic surfactant whose hydrophilic characteristics are improved by the presence of a hydroxyl group in its structure (see Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Optical and fluorescence properties of MgO nanoparticles in micellar solution of hydroxyethyl laurdimonium chloride

Salem

El‐Nahhal

Hammad

et al. 2015

Chemical Physics Letters

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“…Micelles have attracted significant attention because of their ability to function as encapsulating systems to provide selective microenvironments [14][15][16][17]. This observation is complicated by micellar-encapsulation exhibiting enhancing and/or quenching effects depending on the nature of the surfactant, fluorophore, and quenching agent.…”

Section: Introductionmentioning

confidence: 99%