High-resolution electron microscopy and microanalysis of ordered arrays of size-controlled amorphous gallium nitride nanoparticles synthesized in situ in a block copolymer matrix

Leppert, Valerie J.; Murali, Amith; Risbud, Subhash H.; Stender, Matthias; Power, Philip P.; Nelson, Christopher P.; Banerjee, P.; Mayes, Anne M.

doi:10.1080/13642810110120532

Cited by 8 publications

(9 citation statements)

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“…[1][2][3][4][5][6][7][8][9][10][11] In some applications, the microphase separation of the block copolymers is used as a template to control the ordering of the particles and to produce highly organized hybrid materials. 1,2,4,12 In other applications, the particles are used to modify the self-assembly of the parent block copolymer to lead to new morphologies of self-assembly.…”

Section: Introductionmentioning

confidence: 99%

Strong Segregation Theory of Block Copolymer−Nanoparticle Composites

2006

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We present strong segregation approximation based analytical calculations and complementary computer simulation results on the ordering and structural characteristics of block copolymer-nanoparticle mixtures. We consider specifically the case of a symmetric block copolymer organized in a lamella phase, which is mixed with both selective and nonselective nanoparticles. We present results within the strong segregation approximation quantifying the density distribution of nanoparticles and the influence of the nanoparticles upon the lamella thickness and their elastic constants. The case of nonselective nanoparticles is treated in detail to account more accurately for both size effects and finite concentrations of nanoparticles. The latter results suggest the possibility of layer instabilities and morphological transitions resulting from the surfactant-like role of nonselective particles. Qualitative features of our model predictions are in agreement with our computer simulation results.

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Section: Introductionmentioning

confidence: 99%

Strong Segregation Theory of Block Copolymer−Nanoparticle Composites

2006

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“…AFM, which has the capacity for molecular and submolecular resolution and in situ imaging capability, is a versatile tool that can be used to quantify and visualize surface chemical properties, hydrophobicity, and local mechanical properties of surfaces. It can also probe the structure, properties, and functions of a biological specimen under physiological conditions with unprecedented nanometer resolution [115].…”

Section: Atomic Force Microscopy Characterization and Detectionmentioning

confidence: 99%

Molecularly imprinted polymer membranes and thin films for the separation and sensing of biomacromolecules

Boysen

Schwarz

Nicolau

et al. 2016

J of Separation Science

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This review describes recent advances associated with the development of surface imprinting methods for the synthesis of polymeric membranes and thin films, which possess the capability to selectively and specifically recognize biomacromolecules, such as proteins and single- and double-stranded DNA, employing "epitope" or "whole molecule" approaches. Synthetic procedures to create different molecularly imprinted polymer membranes or thin films are discussed, including grafting/in situ polymerization, drop-, dip-, or spin-coating procedures, electropolymerization as well as micro-contact or stamp lithography imprinting methods. Highly sensitive techniques for surface characterization and analyte detection are described, encompassing luminescence and fluorescence spectroscopy, X-ray photoelectron spectroscopy, FTIR spectroscopy, surface-enhanced Raman spectroscopy, atomic force microscopy, quartz crystal microbalance analysis, cyclic voltammetry, and surface plasmon resonance. These developments are providing new avenues to produce bioelectronic sensors and new ways to explore through advanced separation science procedures complex phenomena associated with the origins of biorecognition in nature.

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“…Composites of GaN nanoparticles in polymer [7] or silica gel matrices [8,9] through the use of organogallium precursors have also been reported. We have recently reported that ordered arrays of amorphous GaN can be synthesized in block copolymers with controlled architectures [10,11].…”

Section: Introductionmentioning

confidence: 99%