Polymer Multilayer Microspheres Loaded with Semiconductor Quantum Dots

Petukhova, Alla; Paton, Andrew S.; Wei, Zhixiang; Gourevich, Ilya; Nair, Selvakumar V.; Ruda, Harry E.; Shik, A.; Kumacheva, Eugenia

doi:10.1002/adfm.200701441

Cited by 25 publications

(15 citation statements)

References 40 publications

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“…If the core and intermediate layer is removed, respectively, a multishell hollow sphere is obtained. [122][123][124][125][126] In some cases, the multishell structure and rattle structure are combined when a solid core is wrapped in multiple hollow shells, as indicated in Figure 4c and 4d. [127] Recently, Chen and co-workers prepared multishell microspheres from azithromycin, an amphiphilic pharmaceutical molecule, by using a very simple self-assembly approach.…”

Section: Multishell Spheresmentioning

confidence: 97%

Hollow Micro/Nanomaterials with Multilevel Interior Structures

2009

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In this Review, recent achievements in the multilevel interior‐structured hollow 0D and 1D micro/nanomaterials are presented and categorized. The 0D multilevel interior‐structured micro/nanomaterials are classified into four main interior structural categories that include a macroporous structure, a core‐in‐hollow‐shell structure, a multishell structure, and a multichamber structure. Correspondingly, 1D tubular micro/nanomaterials are of four analogous structures, which are a segmented structure, a wire‐in‐tube structure, a multiwalled structure, and a multichannel structure. Because of the small sizes and complex interior structures, some special synthetic strategies that are different from routine hollowing methods, are proposed to produce these interior structures. Compared with the same‐sized solid or common hollow counterparts, these fantastic multilevel hollow‐structured micro/nanomaterials show a good wealth of outstanding properties that enable them broad applications in catalysis, sensors, Li‐ion batteries, microreactors, biomedicines, and many others.

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Section: Multishell Spheresmentioning

confidence: 97%

Hollow Micro/Nanomaterials with Multilevel Interior Structures

2009

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“…As far as the author is aware, the radiation of active nanosources, placed in multilayered microspheres with included LH material, has inadequately been studied yet, though it is a logical extension of previous works in the case of bare microspheres. Due to recent synthesization of the microspheres with radial variation in the refractive index [23,24], it is of interest to study new electromagnetic phenomenon when nanosources are incorporated not only onto the surface of a microsphere, but also inside various layers of the spherical stack consisting of the LH and conventional materials.…”

Section: Nm mentioning

confidence: 99%

The Confinement of Electromagnetic Radiation of Nanoemitters in a Multilayered Microsphere with Left-Handed Layers

Burlak

Díaz‐de‐Anda²

2010

JEMAA

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The electromagnetic radiation of nanoemitters placed into a multilayered microsphere with dispersive left-handed (LH) layers included is studied numerically. It is found that in the frequency range where LH layers have a negative refraction index the field frequency spectrum consists of a series of narrow and well separated resonances. In the band of such peaks, the great part of the field energy is located in a LH layer and practically does not leave the microsphere

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“…For instance, Radloff and Halas have demonstrated that tetra-layer concentric nanoshell plasmonic nanostructures exhibited new resonances in the analysis of the plasmon resonant modes and energy controllable hybrid modes via precise tuning of the thickness of the selected shell-layer and the total particle size [6]. Kumacheva and co-workers have synthesized polymer multi-layer microsphere with a quantum dots loaded core and alternating layers with low and high refractive indices, which could be used as optical resonators through increasing the refractive index contrast between the alternating layers and excluding polymers [7]. For these applications, controllable size tuning of each layer and the overcoming of incompatibility between the connecting layers play an essential role.…”

Section: Introductionmentioning

confidence: 99%