Synthesis and Anti-migration Studies of Ferrocene-Based Amides as Burning Rate Catalysts

Amin, Bilal Ul; Yu, Haojie; Wang, Li; Fahad, Shah; Nazir, Ahsan; Haq, Fazal; Mahmood, Sahid; Uddin, Md Alim; Shen, Di; Liang, Ruihong

doi:10.1007/s10904-020-01861-7

Cited by 17 publications

(5 citation statements)

References 48 publications

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“…This not only introduces the strong and stable iron as the metal center but also imparts rmness to the chains and characteristics associated to ferrocene such as ame retarding behavior, electroactivity, redox properties etc. [3,4].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Khan

Akhter

Gul

et al. 2022

J Inorg Organomet Polym

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Efforts have been devoted to synthesize and characterize processable polymers with desired properties.Herein, four different series of aromatic and aliphatic terpolyamides were prepared via solution phase polycondensation of 4,4'-oxydianiline and hexamethylenediamine (HMDA) with various diacids chlorides (isophthalyol dichloride, terepthalyol dichloride, 1, 1'-ferrocene dicarboxylic acid chloride and transazobenzene-4, 4'-dicarbonyl chloride). The structural, morphological and physico-chemical nature of as prepared polymers was explored by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermal analysis (TGA and DSC), and wide-angle x-ray diffraction (WAXRD). Moreover, an aliphatic diamine was incorporated in varying concentration as a exible methylene spacer and the effect of its concentration on the properties of polyamides was also studied. Changes in various physicochemical properties such as solubility, inherent viscosity, surface morphology and ame retarding behaviour were investigated. Marked difference in morphology and solubility was observed with the change in the ratio of segments in the chain. Inherent viscosities of polymers ranged from 1.8052-1.6274 dl/g indicating reasonably moderate molecular weights. Interestingly, ferrocene based aromatic polymers were more thermally stable (T g 260 o C, T i 310 o C, T h 525 o C, T f 720 o C, for PF 0 ), and also found to exhibit best ame retarding behavior (limiting oxygen index (LOI) value for PF 0 is LOI 33.15 %).

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Khan

Akhter

Gul

et al. 2022

J Inorg Organomet Polym

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“…In the 21st century, the development of missiles, aviation, and aerospace technology requires solid propellant to meet more complex standards and further promote its development. [1][2][3][4] The burn rate is one of the most important technical parameters for evaluating the flammability of solid composite propellants, [5] and the use of burn rate catalysts (BRCs) has been proven to be one of the most effective ways to change the burn rate; [6] various BRCs have been reported, such as transition metal oxides, metal complexes, carbon black-related compounds, nanomaterials, and ferrocene-based derivatives. [7] Among these BRCs, ferrocene derivatives are characterized by their inherent thermal stability, aromaticity, low toxicity, lipophilicity and efficient burn rate catalytic activity; these and other advantages have attracted much attention.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of binuclear ferrocene energetic compounds as combustion rate catalyst

Zhao

Hou

et al. 2022

Zeitschrift anorg allge chemie

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In order to improve the catalytic performance, oxidation resistance and thermal stability of neutral alkyl ferrocene-based combustion rate catalysts, mononuclear ferrocene energetic compounds were designed and prepared, but four binuclear ferrocene energetic compounds were unexpectedly discovered during the synthesis compounds. The new compounds were characterized by single-crystal X-ray diffraction, 1 H and 13 C nuclear magnetic resonance spectroscopy, and high-resolution mass spectrometry. The crystal structures of compounds a, b, c and d confirmed that we have successfully prepared binuclear ferrocene nitrogen-containing heterocyclic compounds. The thermogravimetric results revealed that most of the compounds exhibit high thermal stability. The electrochemical properties of the four compounds were examined by cyclic voltammetry (CV) and differential pulse voltammetry; the CV experimental results indicated that these compounds showed good electrochemical performance, which contributed to their burning rate catalytic activity in composite solid propellants. Differential scanning calorimetry was used to study the catalytic performance of the binuclear ferrocene energetic compounds for ammonium perchlorate (AP). The results show that these compounds have a good combustion catalytic effect on AP due to the increase in the number of ferrocene groups.

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“…43 The CV curves became deformed and the peak current was also decreased to an increase in the solvent polarity. 51 In different organic solvents, the peak shape, the peak potential and the peak current were different (Figure 2E). In addition, electronic interactions did not significantly affect the redox reaction between the radicals.…”

Section: Resultsmentioning

confidence: 98%

“…It is assumed that the electron-transfer was reversible and obeyed Fick’s law (diffusion-control activity in solution) . The CV curves became deformed and the peak current was also decreased to an increase in the solvent polarity . In different organic solvents, the peak shape, the peak potential and the peak current were different (Figure E).…”

Section: Results and Discussionmentioning

confidence: 99%

Dynamics in Controllable Stimuli-Responsive Self-Assembly of Polymer Vesicles with Stable Radical Functionality

Uddin

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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Self-assembled polymer vesicles have emerged as exciting and promising materials for their potential application in drug delivery, but the dynamics of stimuli-responsive polymers in these areas with pendant functionality in order to understand the structure–property relationship under different physicochemical conditions is still open to discussion. In this work, nitroxide radical-containing copolymers were synthesized and utilized to investigate local dynamics in their vesicular assemblies. Herein, electron paramagnetic resonance (EPR) spectroscopy was applied to reveal the smart supramolecular vesicular structure and polymer chain dynamics in stimuli-responsive controlled assemblies by considering molecular-level interactions. These interactions and dynamics were dependent on the microenvironment of the assemblies, which might be affected by physicochemical parameters such as radical concentration, pH, redox agent, polarity, and viscosity. These observations help to accomplish quantitative insights into the stimuli-responsive colloidal vesicular assemblies. The vesicles were used as an anticancer drug carrier, which showed high drug loading efficiency (63.65%). The reduction-responsive prompt disassembly accelerated the release. Furthermore, the biocompatibility and anticancer activity were examined by cellular experiments against normal fibroblasts (L929) and human cervical cancer (HeLa) cell lines, respectively. The results demonstrate that this effort provides an easy strategy for designing controllable stimuli-responsive polymer nanosystems which promotes their promising application in cancer treatment.

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Synthesis and Anti-migration Studies of Ferrocene-Based Amides as Burning Rate Catalysts

Cited by 17 publications

References 48 publications

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Facile Synthesis of Ferrocene-Based Polyamides and Their Organic Analogues Terpolyamides: Influence of Aliphatic and Aromatic Sequences on Physico-Chemical Characteristics

Synthesis and properties of binuclear ferrocene energetic compounds as combustion rate catalyst

Dynamics in Controllable Stimuli-Responsive Self-Assembly of Polymer Vesicles with Stable Radical Functionality

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