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The incorporation of iron into the MnO2 lattice can alter the electronic structure and defect chemistry, resulting in modified charge distribution and improved electron transport [9].
Doping iron into manganese oxide changes the crystal structure by replacing certain manganese atoms.
Surface morphology is the physical structure and characteristics found on the surface of a substance.
Coordination Chemistry Reviews, 2022. 464: p. 214540
Protection of Metals and Physical Chemistry of Surfaces, 2022. 58(5): p. 991-998

Gemini amphiphiles have been widely investigated in many aspects due to the unique structure.
The molecular structures and their abbreviations were shown in Fig. 1.
The structures of the final products were confirmed by 1H NMR and elemental analysis.
Fig. 1 Chemical structures and abbreviations of gemini-type Schiff base amphiphiles.
Acharya, Supramolecular chemistry as a versatile tool for advanced sciences in nanospace, Adv.

Electronic structures and spectral properties of the optoelectronic material rhenium (I) tricarbonyl complexes containing spiro[dipyridine-fluorene]-type ligands Hongying Xia1, a and Feng Zhao1,b 1 Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science &Technology Normal University, Fenglin Street Nanchang, Jiangxi 330013, China.
Molecular geometries, electronic structures, and optical absorption spectra of the complexes studied were discussed in detail using density functional theory (DFT) and time-dependent density functional theory (TDDFT).
They thank the Guizhou University High Performance Computation Chemistry Laboratory (GHPCC) for help with computational studies.

Furthermore, the small-angle scattering data presented that the anatase titanium dioxide constructed a 3-dimensional structure with a compact structure originating from the fractal dimension value of approximately 3.
Besides refining the X-ray diffraction data to ensure that the titanium dioxide is crystallized in anatase structure, it is also important to visualize such structure as shown in Fig. 2.
Crystal structure of anatase titanium dioxide phase.
Yan, Effect of synthesis method on the nanostructure and solar-driven photocatalytic properties of TiO2-CuS composites, ACS Sustainable Chemistry & Engineering. 5 (2017) 1347–1357
Cui, Highly efficient full solar spectrum (UV-vis-NIR) photocatalytic performance of Ag2S quantum dot/TiO2 nanobelt heterostructures, Journal of Industrial and Engineering Chemistry. 45 (2017) 189–196

Spray Pyrolysis Synthesis and Luminescence Properties of Spherical Eu3+ Doped SrMoO4 Phosphors Shun Wanga, Hong-qiang Wangb Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541001, China a 13943772@qq.com; b whq74@mailbox.gxnu.edu.cn (Corresponding Author) Keywords: SrMoO4:Eu3+ phosphors; Spray pyrolysis; Morphology; Luminescence Abstract: Spherical SrMoO4:Eu3+ phosphors had been prepared by spray pyrolysis.
The effect of the total solution concentration on phase structure, microscopic morphology and fluorescent performances of SrMoO4: Eu3+ phosphor have been studied.
All XRD patterns are found to agree well with data in the Inorganic Crystal Structure Database (JCPDS 08-0482), indicating the pure phase of the as-grown samples.
All the compounds have tetragonal structure with the space group I41/a (88).
We can get that the changing of total solution concentration don’t effect the structure of the objective product.

Analysis from FTIR and SEM showed that starch grafting with acrylic acid and acrylamide was successful, while a three-dimensional network structure was formed in superabsorbent.
An effective cross-linked structure cannot be formed [5].
The longer chain, the greater network structure and swelling volume, which increased water absorbency.
It clearly indicated that a three-dimensional network structure was formed at the superabsorbent.
Starch chain and potassium acrylate, acrylamide side chains interspersed with each other to form a well-developed network structure with holes.

Mesoporous zeolite structure and performance of inorganic porous material between amorphous and crystalline structure of zeolites has among its many excellent properties are not available in other porous materials, such as high surface area, high porosity, pore size can be very wide range of control (1.3nm-30nm), and optimized post-processing or synthesis of mesoporous zeolite can have a good hydrothermal stability and acid and alkali resistance.
In the field of environmental protection, bio-medical field, the field of functional materials and host-guest chemistry and many other areas have very broad application potential.
Results show that with increasing temperature, mesoporous zeolite solid structure parameter will be a rising and descending trend, temperature at 110℃ can get considerable structural parameters
The characterization results comparison of crystallization time is beneficial to improve the synthetic samples of solid structure parameters, and the crystallization time is 72h can obtain good structure parameters.
[3] Wu L, Wasystem [J], Journal of Fuel Chemistry and Technology,Vol.36 (2008) ,p.122-124

Preparation of Novel Commercial Polyaniline Composites for Ammonia Detection Muhammad Musa Jusoff Albar1,a, Nurul ‘Ain Jamion1,b, Siti Nor Atika Baharin1,c, Muggundha Raoov2,d and Kavirajaa Pandian Sambasevam1,e* 1School of Chemistry and Environment, Faculty of Applied Sciences, Universiti Teknologi Mara, Cawangan Negeri Sembilan, Kampus Kuala Pilah, 72000 Kuala Pilah, Negeri Sembilan, Malaysia 2Department of Chemistry, Faculty of Sciences, University of Malaya, 50603, Kuala Lumpur, Malaysia aMusa.jusoff95@gmail.com, bain7059@uitm.edu.my, catikabaharin@uitm.edu.my, dmuggundha@um.edu.my, ekavirajaa@live.com* Keywords: Conducting polymer, crab shells, mussel shells, egg shells, sustainable waste management.
Polyaniline (PANI) is one of the unique conducting polymers due to tunable conductivity, acid-base chemistry and optical properties.
It’s due to the easy synthesis, environmental stability and unique acid-base chemistry of PANI [4].
It shows several standard peaks of PANI, which are the π-π* conjugation of the benzenoid structure in the range of 385-390 nm [12], a shoulder-like peak of polaron-π* in the range of 420-430 nm that indicates the polaronic character and the final peak is in the range of 730-740 nm that indicates the doped state of quinoid cations [13].

SHEELA a a Materials Chemistry Division, Centre for Excellence in Nanomaterials, School of Advanced Sciences, VIT University, Vellore.
Schiff bases are important ligands in coordination chemistry as they are capable of forming neutral complexes readily with transition metals.
These ligands have nitrogen and oxygen as well as nitrogen and sulphur donor atoms in their structures providing good chelating sites for metal ions [2-5].
Ethidium bromide intercalates with the double stranded structure of DNA and is necessary in order to view DNA under UV visible trans-illumination.
Yang, Three new Cu(II) and Cd(II) complexes with 3-(2-pyridyl)pyrazole-based ligand: Syntheses, crystal structures, and evaluations for bioactivities J.

Collagen consist of three polypeptide chains (a chains) that are intertwined and forms a triple helix structure which is stabilized by intra and inter-chain hydrogen bond [5].
Besides, FTIR also can be used to study the changes in secondary structure of collagen and gelatin [10].
FTIR spectra indicate that conversion of gelatin from collagen leads the loss of triple helical structure and decrease the molecular order.
Kishimura, Use of pepsin for collagen extraction from the skin of bigeye snapper (Priacanthus tayenus), Food Chemistry, 2(104) (2007) 593-601
Shahariza, Potential use of Fourier transform infrared spectroscopy for differentiation of bovine and porcine gelatins, Food Chemistry 118 (2010) 856 – 860