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The various techniques of characterization used show that the Cu(II) complex was effectively encapsulated in the zeolite and this process does not modify the morphology and structure of the NaY zeolite.
Sodium, potassium and other positively charged exchangeable ions occupy the channels within the three-dimensional structure and can be coordinated by functionalized ligands [1].
No shift or broadening of the zeolite vibrations are observed upon inclusion of the complex, which provides further evidence that the zeolite structure remains unchanged.
However, there is evidence for host-guest interaction between the encapsulated copper(II)-purine complex and the zeolite structure.
Lister: Chemistry of Heterocyclic Compounds (Wiley-Interscience, New York, 1971) Vol. 24 (II), p. 504

Microencapsulation of Styrene/epoxydiacrylate via In Situ polymerization of Melamine-formaldehyde Haiping Wang School of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, P.
The chemical structure of microcapsule was identified by Fourier transform infrared spectroscopy (FT-IR) and proton magnetic resonance spectroscopy (1H-NMR), respectively.
Microcapsules are widely used in a number of diverse applications ranging from electronic inks, food additives, coatings to pharmaceuticals in virtue of their special structure [1].

It was found that the structures between the joining interfacial layers were similar.
The scanning electron microscope (SEM) showed that the structure of the ATG can be divided into three layers; glass body, binder, and coated metal [10], as shown in figure 1.
Paul, in: Chemistry of Glasses, Chapman and Hall Ltd., N Y (1982)

Structure and Rheological Behavior of Alkoxide-Based Precursors for Drawing of Metal Oxide Micro- and Nanofibres Medhat Hussainov1, Tanel Tätte1, Madis Paalo1, Jonas Gurauskis2, Hugo Mändar1, Ants Lõhmus1 1Institute of Physics, University of Tartu, Riia 142, Tartu, Estonia 2 Instituto de Ciencia de Materiales de Aragón C.S.I.C., University of Zaragoza, C/Pedro Cerbuna 12, Zaragoza, Spain 1medhat.hussainov@ut.ee, 2jonas.gurauskis@unizar.es Keywords: metal oxide nanofibre, tin alkoxide, sol-gel, rheology.
The sol–gel process is of special interest because it enables to obtain different geometries by gelling the structures in suitable molds, as thin films, jets pulled into air etc. [2].
Structure of precursors SAXS determined pair distribution functions (Fig. 1) and DAMMIN 3D [1] modeling of observed scattering patterns of Sn(OBu)4 based samples pointed to elongated particle shape.
Firstly, values of storage G´ (elastic response) modulus were measured to determine the linear viscoelastic region where the structure of the dispersion keeps intact.
Kessler: The chemistry behind the sol–gel synthesis of complex oxide nanoparticles for bio-imaging applications.

Kinetics of Cellular Structure Formation at Thermal Treatment Processes Simulation in the Cellular Glass Technology S.V.
It is required to comprehensively approach the study process of porous structure of cellular glass formation for stating the problems of such kind.
Obvious conclusion is that simulation of the cell growth in the cellular glass charge stock taking into consideration limitless glass melt surrounding the latter one will not provide adequate dependencies and perceptions regarding structural transformations in the process of heat treatment of cellular glass charge stock, since cell structure of the target material is not taken into account, as well as the interaction of neighboring cells.
Cellular structure of cellular glass shows that each cell cladding is surrounded by a finite volume within the limits of its glass partitions.
Chemistry and Chemical Technology. 57(3) (2014) 73-79.

Exposure to temperature of 800 °C, the geopolymer lost its strength due to extremely densification and expansion processes of the high unreacted silicate phase in the structure.
Additionally, as the geopolymer exposed to 800 °C, the structure did not return any residual strength as it underwent extremely densification and expansion processes with severe cracking and dimensions changes.
The water in the geopolymer structure transformed to a water vapor when the geopolymer heated further than 100 °C [7] and its pressure increased continuously with increasing the heating temperature.
Figure 1b presents the SEM micrograph of the geopolymer paste exposed to 400 °C, shows the developing in the micro-crakes growing due to the high water evaporation rate from the dense structure.
Davidovits, Chemistry of geopolymeric systems, terminology in: proceeding of International Conference on geopolymers, Geopolymer ’99 International conference, Geopolymer Institute, France. 32: 9–40 (1999)

The electron diffraction (ED) pattern shows broad halos due to polymeric matrix and the sharp rings from the Au crystallites are consistent with the cubic-close-packed structure of Au (Inset in Fig- 1).
The crystalline nature of the Au nanoparticles is also clearly reflected in the Au LIII XANES spectra shown in Fig-2, which show a high degree of similarity to the spectrum of Au foil used as a reference for bulk gold structures.
Using polarized SR on single crystal samples, which allows the identification of different orientations of chemical bonds, Smith et al 9 have provided an excellent basis for the assignment of the different structures in S K-XANES spectra of photographic materials which involves S-Au or S-Ag bond.
The considerable intensity of the additional structure in the spectrum indicates a high yield of S-Au bond formation, indicating that each gold particle is most likely connected to the polymer via several bonds.
This study is significant for the reason that it can be extended to incorporate other nanoparticles such as Pd, Pt, Ag, Cu etc having strong affinity for thiols possibly leading to development of new types of Merrifield resins which can be used in solid phase synthesis in general and combinatorial chemistry in particular.11 Since polymeric beads with various functionalities such as COOH are commercially available, it is also possible to incorporate magnetic nanoparticles such as Co having strong affinity for such functional groups onto polymeric beads.

Structure-Property Relations in xCuO-(1-x)As2O3-0.7B2O3 (0.01≤x≤0.05) Glasses by Magnetic Susceptibility Measurements, IR and EPR Spectroscopy B.
Gopinath Department of Chemistry, Pondicherry University, Pondicherry - 605014, India a Email:das_b_b@yahoo.com Abstract.
Studies on xCuO-(1-x)As2O3-0.7B2O3(0.01≤x≤0.05) (G1-G5: x = 0.01, 0.02, 0.03, 0.04, 0.05) glasses were done using varieties of structure sensitive techniques.
In the case of systems containing boron trioxide [7,8], B2O3, and arsenic trioxide [9,10], As2O3, because of the structural complications involving the different units forming the network, it is interesting to study the structure-property relations of such systems.

Twisted composite structures made by 4D printing method.
Recent advances in analytical chemistry by 3D printing.
The Royal Society of Chemistry; 2017;5:9514–21.
Sequential Self-Folding Structures by 3D Printed Digital Shape Memory Polymers.
Four-dimensional printing of shape memory polyurethanes with high strength and recyclability based on Diels-Alder chemistry.

By means of x-ray diffraction and scanning electron microscopy, the morphologies and phase structures of coating were analyzed.
It is noted that Ni exhibits face-cubic center structure (fcc), with coordination number 12 and lattice parameter a = 3.520.
Because of the smaller grain size of electroless Ni plating, introducing P into fcc Ni structure can destroy the perfect structure, and form the amorphous behavior similar to liquid.
(4) The microscopic structure of the coating exhibits amorphous, which is the origin of perfect property.
Stephen: Materials Chemistry and Physics, Vol. 99(2006), p. 117