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Babkov, L. M.; Vedyaeva, E. S.; Puchkovskaya, G. A.

doi:10.1023/a:1010459719994

Cited by 6 publications

(2 citation statements)

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“…Noteworthy, a majority of the chemical systems studied here display a round-shaped morphology, except for NaCl (prism), azelaic acid (exhibited mostly prism and small fraction of rod shapes), and two binary salt–organic mixtures (core–shell morphologies). The observed morphologies are in good agreement with the previous studies on NaCl, MA, Suc, GA, and NaCl/MA binary chemical system observed using AFM and electron microscopy techniques. ,,− In the case of AA, which was the only system that produced two different morphologies (rod and prism shapes), we hypothesize that the morphologies may correspond to two different polymorphs of AA. , Overall, our study covers sub- and supermicron-sized individual particles with volume equivalent diameter ranging from about 100 to 2200 nm (Figure S15).…”

Section: Results and Discussionsupporting

confidence: 90%

Correlating 3D Morphology, Phase State, and Viscoelastic Properties of Individual Substrate-Deposited Particles

et al. 2019

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Depending on the source and relative humidity, aerosols can have different compositional, morphological, and viscoelastic properties. Aerosol studies determining the relationship between these properties and their combined effect on the climate and environment are important. This work aims to correlate the 3D morphology, phase state, and viscoelastic properties of selected single-component chemical systems found in sea spray aerosol (SSA) that were substrate-deposited on a solid surface, studied with atomic force microscopy (AFM). Specifically, two inorganic salts (NaCl and MgSO4), four organic acids (malonic, glutaric, azelaic, and palmitic acids), three saccharides (glucose, sucrose, and raffinose), and lipopolysaccharide from Escherichia coli were studied. Furthermore, three inorganic–organic binary chemical mixtures (NaCl–malonic acid, NaCl–glucose, and MgSO4–glucose) at 1:3 and 3:1 mass ratio were studied. AFM imaging and force spectroscopy at 20% relative humidity were performed to record 3D height images of individual particles and measure force–distance plots, respectively. First, by utilizing combined relative indentation depth (RID) and viscoelastic response distance (VRD) data obtained from the force–distance plots, we establish quantitative framework toward differentiation of the solid, semisolid and liquid phase states of individual particles without prior knowledge of their chemical identity. Second, we show that the single particle aspect ratio (AR) of a wide range of compounds relevant to SSA is a measure of the extent of the particle spreading as a result of impaction with the solid substrate, which can be directly related to the RID and VRD results. Thus, we demonstrate that a quick height imaging and determination of a single particle AR can be used to assess the phase state. Therefore, we introduce the ability to semiquantitatively assess the phase states of individual substrate deposited particles of SSA-relevant compounds, irrespective of the microscopy technique used, which can subsequently be further validated by more quantitative AFM force spectroscopy.

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Section: Results and Discussionsupporting

confidence: 90%

Correlating 3D Morphology, Phase State, and Viscoelastic Properties of Individual Substrate-Deposited Particles

et al. 2019

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“…Based on the comparison between measured and calculated JR absorption spectra for different polymorphic modifications, a conclusion has been made that they have different molecule conformations (conformational polymorphism). The main ideology of such investigations has been presented before [5]. This paper in more detail discusses the effect of nACHCA and nFACHCA molecule conformation changes on the characteristics of calculated spectra.…”

Section: Introductionmentioning

confidence: 99%

Conformational analysis of alkyl- and fluoroalkylcyclohexanecarboxylic acids by infrared spectroscopy methods

Babkov

Puchkovskaya²,

Vedyaeva

2003

SPIE Proceedings

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Modelling of JR spectra has been carried out for alkyl-and fluoroalkylcyclohexanecarboxylic acid sets, which experimental spectra in the temperature range of 77-500 K were received earlier. This modelling took into account the conformational mobility of molecules and the hydrogen bond energy decreasing in H-complexes during heating. Temperature dependent changes of spectra have been shown to be caused by conformational transitions, accompanied with turns of the alkyl (fluoroalkyl) radical or carboxylic groups and the energy decreasing of hydrogen bond during heating.

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Synthesis and optical properties of two new PPV derivatives embedded on the surface of PbS nanocrystals

Piątkowski

Gadomski

Przybylski

et al. 2010

Journal of Photochemistry and Photobiology A: Chemistry

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Cited by 6 publications

References 1 publication

Correlating 3D Morphology, Phase State, and Viscoelastic Properties of Individual Substrate-Deposited Particles

Correlating 3D Morphology, Phase State, and Viscoelastic Properties of Individual Substrate-Deposited Particles

Conformational analysis of alkyl- and fluoroalkylcyclohexanecarboxylic acids by infrared spectroscopy methods

Synthesis and optical properties of two new PPV derivatives embedded on the surface of PbS nanocrystals

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