Search results

Turkish Journal of Chemistry. 35(5) (2011) 769-777
Synthesis and characterization of N-(Arylcarbamothioyl)-cyclohexanecarboxamide Derivatives: The Crystal Structure of N-(Naphthalen-1-ylcarbamothioyl)cyclohexanecarboxamid.
Synthesis and single crystal structure analysis of tree novel benzoylthiourea derivatives.
Turkish Journal of Chemistry. 33 (2009) 857-868
Spectroscopic Studies and Crystal Structure of 1-[(2,5-dioxopyrrolidin-1- yl)(phenyl) methyl] Thiourea.

To overcome this limitation, a bandgap can be introduced into graphene quantum dot structure to modify graphene’s physical properties.
However, the CQDs lack explicit crystal structure that is found in GQDs even they exhibit similar graphitic structure and features.
The examples of bottom-up method are stepwise solution chemistry, precursor pyrolysis, catalysed cage-opening and pyrolysis and exfoliation [6].
Transmission electron microscope (TEM) was used to study the structure of prepared GQDs.
Facile synthesis of analogous graphene quantum dots with sp 2 hybridized carbon atom dominant structures and their photovoltaic application., Nanoscale, 6(21), pp. 13043–13052

Based on above it can be concluded that mechanical behaviour of major elastomeric structures mainly depends on large strains, high strain rate (above 10 1/s) and nonlinear viscoelastic response.
For MAT_181 stresses are higher, which indicates the strain-rate dependency not only on the element structure but also on its stresses.
Roland, Mechanical behaviour of rubber at high strain rates, Rubber Chemistry and Technology, 79 (2006) 429-459
Johnson, Extension of the Bergstrom–Boyce model to high strain rates, Rubber Chemistry and Technology, 77 (2005) 972–981
Chen and others, Crash dynamics of square honeycomb thin rubber wall, Thin-Walled Structures, 47 (2009) 1447-1456 [8] P.A .Du Bois, S.

Synthesis and in vitro Anti-breast Cancer Activity of Trametenolic acid B Derivatives Mingruo Ding, Qiaoyin Zhang, Fang Hu, Nianyu Huang, Junzhi Wang* Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Sciences, China Three Gorges University, Yichang, Hubei 443002, China horsedog@163.com Keywords: Tetracyclic triterpenoid, trametenolic acid B, cytotoxic activity, structure modification Abstract: Six compounds were synthesized from the lanostane-type tetracyclic triterpenoid of trametenolic acid B with the aim of obtaining more active compounds, which were characterized by NMR, IR, ESI-MS and elemental analysis.
Their diverse structure types and various functional groups exhibit widely interesting biological, pharmacological, or medicinal activities including anti-inflammatory and anti-carcinogenic activities [2,3].
The triterpenoids are economically and medicinally important and include many species with a variety of uses [4], which are attractive to the pharmacological and synthetic communities for their complex structures with unusual motifs.
Results and Discussion 2.1 Chemistry Trametenolic acid B (1) was reported to possess widely cytotoxic activities, but the considerable structural modification has not been performed.
The future studies on the structure-activity relationship of the trametenolic acid B derivatives and their in vivo anticancer activity were under way in our research group.

For sample A, which was prepared at the ratio of C2H2/CS2 flow = 100, the vine type micro-sized carbon structures could be observed with formation of the bush-like morphologies here and there as shown in Fig. 3a.
The crystal structures of samples C and J were investigated using XRD.
This result strongly confirms that the stepwise type injection of CS2 flow can promote the typical graphitic structure as well as the formation of the CMCs.
Wang: Materials Chemistry and Physics Vol. 116 (2009), p. 442–448
Wei: Materials Chemistry and Physics Vol. 114 (2009), p. 702–708.

There is neither chemistry reaction process nor costly chemicals required.
Clay and PCC resulted the complex water resistance oppositely may be the reason of the capillary structure of mineral particles in the complex.
In (f) and (g) of Fig2, we can see the more open structure of aggregate of PCC(f).
These open structure formed a lot of capillary linked to the substrate paper, like a pipe to water flow into the substrate, much easily caused water entered fiber.
L., “Surface Sizing” in Pulp and Paper Chemistry and Chemical Technology, 3rd Ed., Casey, J.

Recently, cavity-shaped derivatives of calixarenes containing pendant phosphorus groups were prepared [17,18], but the studies on the host-guest chemistry are not sufficient[19].
Comparing (a) with (b), few change of the wavelength of main adsorption bands was observed, in spite of the peaks intensity have changed by P=O and P-O groups, which indicats that the main structure of EtPO6 is similar to that of calix[6]arene.
Vogtle, Comprehensive supramolecular chemistry, Elsevier Science.
Babain, Radio Chemistry. 482–492.(2007),p.49
Molecular Structure. 63-71(2007),p.837

The effect of cobalt addition in the matrix, on the structure and properties has been studied.
The phenomenon of electrodeposition of laminar metal structures is accompanied by potential fluctuations.
Rajam, Electrodeposition of Ni-Co composites containing nano-CeO2 and their structure, properties, Appl.
Protection of Metals and Physical Chemistry of Surfaces. 56, 2 (2020) 374–378
Hwu, Nano-Particles Dispersion Effect on Ni/Al2O3 Composite Coatings,J.Materials Chemistry and Physics. 86, 1 (2004) 5-10

Many factors can affect the optical absorption spectrum, including chemical structure, thickness and absorbed light energy of the sample under study.
Gregg, "Organic and nano-structured composite photovoltaics: An overview."
Harriman, "The chemistry of fluorescent bodipy dyes: versatility unsurpassed."
Müllen, "The chemistry of organic nanomaterials."
Langford, "Chemistry of naphthalene diimides."

Introduction Technologies of biomimetic films combine the modern biology, chemistry, physics and related engineering disciplines.
They have similar basic structures with biomembranes.
Many attempts have been done to stabilize the extremely delicate bilayer structure of BLMs.
Anhydrous N-Methylmorpholine-N-oxide aqueous powder was purchased from Canto Chemistry (Shanghai) LTD.
Some porous structures are formed in the hybrid films.