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The spectrum of HAp-GnP is similar to that of HAp and GnP which suggests that HAp and GnP retained the essential feature of its native structure in HAp-GnP.
As seen in Fig. 3a GnP indicates multi layer sheets structure.
The surface of GnP was covered by HAp showing a rough structure with many granules, indicating that HAp-GnP was successfully synthesized.
The Journal of Physical Chemistry C,115(2011) 6448-6454
[9] Garskaite, E., et al., Effect of processing conditions on the crystallinity and structure of carbonated calcium hydroxyapatite (CHAp).

The structure of RE oxides,[6] even if slightly modified by anions, is mainly composed of alternating layers of (REO)+ complex cations and Xn- anions (Cl-, Br-, MoO42-, PO43-, benzoate, etc.).[7] The layered structure of RE oxides indicates that these materials exhibit two-dimensional (2D) electronic, magnetic, and luminescence behaviour. [8] We envisioned that an appropriate anion, Xn-, would provide the desired distance between the adjacent (REO)+ layers under microwave conditions.
The inhibited growth direction of the nanosheets can be determined to be (001), because the nanosheets with a large area lies along the Cu grid, this provided a strong evidence that the intralayer structure of the Y(1-0.05)RE0.05OBr remained the originated crystalline during the exfoliation.
Layered Rare-Earth Hydroxides: A Class of Pillared Crystalline Compounds for Intercalation Chemistry.
Synthesis and anion exchange chemistry of new intercalation hosts containing lanthanide cations, Ln2(OH)5(NO3)·xH2O.
Puche, Interplay between crystal structure and magnetic susceptibility of tetragonal ROBr.

Preparation and NH3-sensing properties of Lead(II) tetrakis(4-cumylphenoxy) phthalocyanine spin-coating films Xiaoqing Zhou1,a, Bin Wang1,b*, Zhixue Han4,c, Yiqun Wu1.2.3,d*, Zhimin Chen1.2,e and Chunying He1.2,f 1 School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China 2 Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education (Heilongjiang University), Harbin 150080, China 3 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O.
Experiment The 4-PbPc was purchased from Aldrich, and chemical structure of 4-PbPc was shown in Fig.1a.
Fig. 1 (a) Chemical structure of 4-PbPc and (b) UV-vis absorption spectra of 4-PbPc in chloroform and thin films at different spin-coating concentration: (1) 5.0 mg/ml; (2) 10.0 mg/ml; (3) 15.0 mg/ml; (4) 20.0 mg/ml.
The good sensing properties are contributed to the out-of-planar structure 4-PbPc and forming of adduct complex NH3-PbPc.
Acknowledgements This work was supported by National Natural Science Foundation of China (51202061, 51002046), Foundation of Education Department of Heilongjiang Province (12511384)，Opening Project Foundation of Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education.

Further on, textbooks on the chemistry of silica show evidence that in precious opal highly ordered templates of silica spheres exist [3].
Gupta et al. reported methods to assemble monodisperse silica nanoparticles by sedimentation in glass cylinders over periods of 610 months to get a green opal structure [9].
These ordered structures diffract selectively some wavelengths only and are known as photonic crystals, which have potential applications as optoelectronic materials [7, 8].
Iler: The Chemistry of Silica (Wiley, USA 1979) [4] F.
Scherer: Sol Gel Science, The Physics and Chemistry of Sol-Gel Processing (Academic Press, New York 1990) [12] R.

Effects of Different Pretreatment Pressures on the Catalytic Performance of Catalyst Derived from (CO)6Co2CC(COOH)2 for Fischer-Tropsch Synthesis Yinyan Wang, Fenghua Bai, Ang Li, Bo Zhao, Haiquan Su*a Inner Mongolia Key Laboratory of Coal Chemistry, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China (haiquansu@yahoo.com) Keywords: Cobalt carbonyl cluster, Co-based catalyst, Pretreatment pressure, F-T synthesis.
Combined with TEM characterization technology, it was found that under different pretreatment pressures (0 MPa, 1.0 MPa, 2.0 MPa), the structure of carbonyl clusters underwent different changes.
Potential advantages of carbonyl based catalysts are their greater metal dispersion [6], higher number of zero valence cobalt species available [7], well defined organometallic cluster structure [8].
We have studied the changes of the precursor structure in different pretreatment atmospheres in our previous work and found that pretreating with H2 gained the best result.
The above results suggest that the degree of agglomeration is in the order of Co2/0MPa /Al2O3 >Co2 /1MPa/Al2O3> Co2/2MPa/Al2O3.The reason of this phenomenon could be attributed to the structure change of precursor (CO)6Co2CC(COOH)2 under different pressures.

These peaks characterize a well-ordered mesoporous structure with a hexagonal symmetry of P6 mm [32, 33].
Indonesian Journal of Chemistry, (2018), 19, 1
Frontiers in Chemistry, (2020), 8, 591766
Journal of Physical Chemistry B, (2000), 104, 20, 4835–4839
UltrasonicsSono chemistry, (2017), 39,765-773

We suggest that any material with large DEHOMO-LUMO,N value (more than a few eV), in which valence bands are completely occupied by electrons, which has been believed to be typical insulator in view of solid state physics and chemistry, has a possibility to exhibit high temperature superconductivity in solids.
In our previous researches [1-4], we suggested that electron-phonon interactions play an essential role in the forming of the closed-shell electronic structures with finite valence-conduction band gaps, by which spin singlet electronic states formed by two electrons with opposite momentum and spins occupying the same orbitals become stable, and the Coulomb interactions play an essential role in the attractive interactions between these two electrons.
Let us discuss how hydrogen atoms and water molecules play an important role in the electronic structures in these carbon materials.
We can expect that any material with large DEHOMO-LUMO,N value (more than a few eV) in which valence bands are completely occupied by electrons, which has been believed to be typical insulator in view of solid state physics and chemistry, has a possibility to exhibit high temperature superconductivity (Tc ≈ 104~105 K) in solids.
In summary, any material with large DEHOMO-LUMO,N value (more than a few eV), in which valence bands are completely occupied by electrons, which has been believed to be typical insulator in view of solid state physics and chemistry, has a possibility to exhibit high temperature superconductivity in solids.

Introduction Perovskite structure is one of the most frequently encountered structure types in solid state inorganic chemistry.
Consequently, the perovskite-type complex oxide is an active research field in material chemistry.
The simple and intuitionistic regions in these structure maps may be easily adopted in the design of advanced materials with perovskite structure.
Square symbols represent the perovskite structure and fork symbols represent the non-perovskite structure.
Therefore, the utility of structure map diagrams lay not so much in rationalizing the structures of known compositions, but in predicting the structures of new compositions.

Atomic Structure of Hydrous Ruthenium Oxide Coating on Ti and CNT Substrate by Cathodic Deposition Method H.
Combination of amorphous and nanocrystalline structure of hydrous ruthenium oxide was also investigated on this specimen.
Combination of amorphous and nanocrystalline structure of hydrous ruthenium oxide was investigated.
Combination of amorphous and nanocrystalline structure of hydrous ruthenium oxide was also investigated.
Čukman, Journal of Electrochemical Chemistry 482, 188-201（2000）. 6.

The unique properties of conjugated polymers originate from their covalent and configurational structure.
Absorption characteristics of the conjugated polymer in the solution reflect significantly the covalent and configurational structure of the polymer.
Therefore, changes in the absorption characteristics can indicate changes in the covalent and configurational structure of the polymer.
Secondly, we have demonstrated that SEC-DAD represents powerful tool in the polythiophene chemistry.
Müllen Optical Spectra and Structure of oligomeric models of polyparaphenylenevinylene, J.