A new Guinier–Porod model

Hammouda, Boualem

doi:10.1107/s0021889810015773

Cited by 487 publications

(521 citation statements)

References 5 publications

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“…The use of modernized variants is recommended, which are available for some of the aforementioned relationships. These modernized variants may be capable of fitting an extended region of data [9,68].…”

Section: What's Next? a Few Words On Data Fittingmentioning

confidence: 99%

Everything SAXS: small-angle scattering pattern collection and correction

Pauw

2013

J. Phys.: Condens. Matter

158

136

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Section: What's Next? a Few Words On Data Fittingmentioning

confidence: 99%

Everything SAXS: small-angle scattering pattern collection and correction

Pauw

2013

J. Phys.: Condens. Matter

158

136

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“…Also, the in-plane 1D GISAXS profiles were deduced from the 2D patterns and depicted in Supplementary Fig 3d-f. In order to obtain more detailed information about the high electron density PCBM phase domains present in low electron density P3HT matrices, the extracted in-plane GISAXS profiles were fit by combining Guinier-Porod model 51 and polydisperse sphere model with Schulz size distribution 52 as shown in Supplementary Fig. 3d-f.…”

Section: Methodsmentioning

confidence: 99%

The isotopic effects of deuteration on optoelectronic properties of conducting polymers

et al. 2014

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The attractive optoelectronic properties of conducting polymers depend sensitively upon intra-and inter-polymer chain interactions, and therefore new methods to manipulate these interactions are continually being pursued. Here, we report a study of the isotopic effects of deuterium substitution on the structure, morphology and optoelectronic properties of regioregular poly(3-hexylthiophene)s with an approach that combines the synthesis of deuterated materials, optoelectronic properties measurements, theoretical simulation and neutron scattering. Selective substitutions of deuterium on the backbone or side-chains of poly(3-hexylthiophene)s result in distinct optoelectronic responses in poly(3-hexylthiophene)/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) photovoltaics. Specifically, the weak non-covalent intermolecular interactions induced by the main-chain deuteration are shown to change the film crystallinity and morphology of the active layer, consequently reducing the short-circuit current. However, side-chain deuteration does not significantly modify the film morphology but causes a decreased electronic coupling, the formation of a charge transfer state, and increased electron-phonon coupling, leading to a remarkable reduction in the open circuit voltage.

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“…Hammouda introduced an empirical model to unify Guinier-like and power-law scattering by constraints of continuity in the curve and its first derivative [30]. In the case of (AuCys)n β , the curve starts with a q -2 power-law, which later turns down, indicating a case for lamellae.…”

Section: ) This Is In Correspondence With the Characteristic Emissmentioning

confidence: 99%

The supramolecular chemistry of gold and l -cysteine: Formation of photoluminescent, orange-emitting assemblies with multilayer structure

Söptei

Mihály

Szigyártó

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The protein mediated approach is a common method for the synthesis of photoluminescent gold quantum clusters (GQCs), where proteins, acting as reducing and stabilizing agents, react with gold salts through cysteine residues. For the better understanding of the phenomenon, the aqueous phase reaction of HAuCl4 and L-cysteine has been investigated at the supramolecular level by various experimental techniques and molecular mechanics simulations. We have observed the formation of a novel photoluminescent product, (AuCys)n β , which shows emission in the orange region of the spectrum. Small-and wide-angle X-ray scattering (SWAXS) measurements have revealed the presence of nanosized lamellae, which have an internal multilayer superlattice structure with a characteristic periodic distance of 1.3 nm. Based on the results, the layers are built up by zigzag shaped (AuCys)n polymer chains connected through aurophilic bonds. The aurophilic network is stabilized via salt bridges and hydrogen bonds, which are also responsible for the interlayer interactions. Here, the evolution of the multilayer structure has been monitored by the combined application of photoluminescence spectroscopy and time-resolved SAXS. It has been concluded that there is a strong correlation between the emission and the scattering intensity, which suggests that the two-and three-dimensional aggregation of the building blocks to form sheets and multilayers are simultaneous processes. Furthermore, we have revealed that the formation and behavior of (AuCys)n β show significant differences to that of Au-L-glutathione compounds desrcibed earlier despite the similarity of L-cysteine and L-glutathione. These results evidence that L-cysteine and gold species form building blocks that can be applied expansively in supramolecular and cluster chemistry.

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A new Guinier–Porod model

Cited by 487 publications

References 5 publications

Everything SAXS: small-angle scattering pattern collection and correction

Everything SAXS: small-angle scattering pattern collection and correction

The isotopic effects of deuteration on optoelectronic properties of conducting polymers

The supramolecular chemistry of gold and l -cysteine: Formation of photoluminescent, orange-emitting assemblies with multilayer structure

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