161678-38-2

Usage

Uses

Used in Polymer Industry:
Octa(γ-Chloropropyl) POSS is used as a crosslinking agent for improving the mechanical, thermal, and chemical properties of polymers. Its incorporation into polymer matrices results in materials with enhanced stability, durability, and resistance to environmental factors.
Used in Coating Industry:
In the coating industry, Octa(γ-Chloropropyl) POSS serves as a dispersant, which helps in achieving uniform distribution of pigments and other additives within the coating formulation. This leads to improved coating performance, including better adhesion, corrosion resistance, and durability.
Used in Surface Modification:
Octa(γ-Chloropropyl) POSS is utilized as a surface modifier for various materials, including metals, ceramics, and plastics. Its reactive γ-chloropropyl groups can form covalent bonds with the surface, resulting in improved adhesion, wear resistance, and chemical resistance of the modified surfaces.
Used in Advanced Materials Development:
Due to its unique structure and reactivity, Octa(γ-Chloropropyl) POSS plays a crucial role in the development of advanced materials with tailored properties. It can be used to create hybrid materials, composites, and nanostructured materials with improved mechanical, thermal, and chemical properties for specific applications in aerospace, automotive, electronics, and other high-tech industries.

Upstream product

• 2530-87-2 3-Chloropropyltrimethoxysilan 
• 77-58-7 dibutyltin dilaurate 
• 5089-70-3 (3-chloropropyl)triethoxysilane 

Relevant academic research and scientific papers

Synthesis and characterization of hybrid congo red from chloro-functionalized silsesquioxanes

Congo red dye has been bonded to the functionalized octameric polyhedral silsesquioxanes (POSS), which were prepared by hydrolytic condensation of chloro-functionalized organosilicon monomers in the presence of a catalyst. The binding reaction of congo red to the POSS with chloro groups was achieved via the addition of the congo red via NaCl elimination. The structures of POSS with chloro side groups provided an attractive site for binding congo red that not only retains some of its characteristic properties, but also has exceptional hybrid properties possessed by the silica. The dye characteristics of the material were determined by means of UV spectroscopy as well as other conventional techniques. TUBITAK.

Funktionalisierte Octa-(propylsilsesquioxane)(3-XC3H6)8(Si8O12) Modellverbindungen fuer oberflaechenmodifizierte Kieselgele

Functionalyzed octa-(propylsilsesquioxanes) have been prepared by the following methods: (a) Hydrolysation of corresponding functionalyzed propyltrialkoxysilanes with X = -Cl, -SH. (b) Hydrosilylation of allyl compounds of octa-(hydri

Environment-induced nanostructural dynamical-change based on supramolecular self-assembly of cyclodextrin and star-shaped poly(ethylene oxide) with polyhedral oligomeric silsesquioxane core

The star-shaped amphiphilic inorganic-organic hybrid polymer POSS-(PEO)8 prepared via click chemistry can self-assemble into spherical aggregates by directly dissolving the hybrid polymer in water. The regular spherical aggregates were gradually transformed to deformed spherical aggregates, cylinders and sheets through adding different amount of α-CD molecules into the POSS-(PEO)8 spherical aggregates solution due to the host-guest inclusion complexation between POSS-(PEO)8 aggregates and α-CD. Adding different amount of phenol which captured α-CD from PEO chains or increasing the environmental temperature of the self-assemblies solutions which also led to the slipping of α-CD out of PEO can reversibly and dynamically change the sheets to cylinders, deformed spherical aggregates or regular spherical aggregates, showing that the reversibly nanostructural dynamical-change can be induced by altering the environmental conditions of the solutions.

Core-shell octa(azidopropyl) POSS-PEO micelle via "click" chemistry

An amphiphilic OAPS-PEO was synthesized by "click" reaction between octa(azidopropyl) POSS (OAPS) and propargyl-terminated PEO. The structure of OAPS-PEO was characterized by nuclear magnetic resonance (NMR). The amphiphilic properties and aggregation process of OAPS-PEO in aqueous solution were investigated by fluorescence, dynamic and static light scattering (DLS and SLS), and transmission electron microscopy (TEM). The critical aggregates concentration was determined at ～ 0.10 mg/mL using fluorescence measurements. At this concentration, unassociated unimolecular micelles with diameter size of 40-50 nm were found by DLS, and were also studied by means of TEM. At a lower concentration, all the OAPS-PEO self-assembled into loose balls. With the increase of the OAPS-PEO polymer concentration, OAPS centralizes to be the core of the aggregates. At the concentration of 2.0 mg/mL, aggregates present to be a core-shell structure.

From an octakis(3-cyanopropyl)silsesquioxane building block to a highly COOH-functionalized hybrid organic-inorganic material

A new nanostructured and highly COOH-functionalized hybrid organic-inorganic material has been synthesized by the hydrolysis of oligomeric octahedral silsesquioxane (POSS), which contains eight cyanopropyl groups. The hybrid, elemental building block oligomeric octakis(3-cyanopropyl)silsesquioxane (CN-POSS) was synthesized from oligomeric octakis(3-chloropropyl)silsesquioxane (Cl-POSS) by an exchange reaction. The formation and nanostructuration of the COOH-functionalized hybrid material were induced by noncovalent hydrogen bonding between COOH-POSS units without decomposition of the core. The material has been fully characterized by scanning electron microscopy, FTIR and 1H, 13C, and 29Si solid-state NMR spectroscopy, X-ray diffraction, and elemental analysis, which confirm that the POSS core remains intact after each chemical modification step. Thermogravimetric analysis indicates that the organic units are thermally stable up to 200 °C. The activation energy related to the proton conductivity of COOH-POSS has been evaluated and confirms the presence of strong hydrogen bonds. Finally, the accessibility and adsorption capacity of the COOH groups towards transition metal ions have been demonstrated and underline the potential of these hybrid materials in extraction chemistry.

POSS with eight imidazolium iodide arms for efficient solid-state dye-sensitized solar cells

Polyhedral oligomeric silsesquioxane functionalized with eight imidazolium iodide arms has been designed and synthesized for use as solid-state electrolytes in solid-state dye-sensitized solar cells, which exhibits a power conversion efficiency of 7.11% under one sun illumination and good long-term stability under one sun soaking.

An oligosilsesquioxane cage functionalized with molybdenum(II) organometallic fragments

A silsesquioxane cage polymer functionalized with eight chloropropyl arms (1, T8-PrCl) reacted with 2,2′-dipyridiylamine (DPA) to afford a new derivative with eight pendant linear chains (2, T8-Pr-DPA). Further reaction with [Mo(η3-C3H5)Br(CO) 2(NCMe)2] afforded another derivative containing three molybdenum units (3, T8-Pr-DPA-Mo), after substitution of the two nitrile ligands in each complex. These are the first silsesquioxane species containing DPA and the Mo(η3-C3H5)Br(CO) 2 fragment. The three materials were characterized by 1H, 13C, 29Si, and 95Mo NMR, FTIR, XRD, and elemental analysis, and T8-PrCl (1) was also structurally characterized by single-crystal X-ray diffraction. It was identified as a low-temperature polymorph of this material. Elemental analysis indicated that all Cl atoms in the parent material T8-PrCl (1) were substituted by the deprotonated DPA group in T8-Pr-DPA (2). However, only three [Mo(η3-C3H5)Br(CO)2(DPA)] units were detected in T8-Pr-DPA-Mo (3). A comprehensive NMR study, complemented with DFT calculations, was carried out in order to detect the effect of Mo coordination on the cage silicon and on the protons and carbons of the propyl chain, but no significant effects were observed. Both 1H and 29Si chemical shifts vary upon introducing DPA but remain the same after reaction with the Mo(II) precursor. The 95Mo NMR data reveal that the metal is not sensitive to the cage. The catalytic activity of 3 was tested as a precursor in the epoxidation of cyclooctene and styrene in the presence of TBHP. Despite the high selectivity toward the epoxides, the conversion and turnover frequencies were low, reflecting the behavior of the [Mo(η3-C3H5)Br(CO)2(DPA)] complex.

Improved shape memory performance of star-shaped POSS-polylactide based polyurethanes (POSS-PLAUs)

Star-shaped polyhedral oligomeric silsesquioxane multi-arm polylactides (POSS-PLA) with various arm lengths were synthesized by ring opening polymerization of d,l-lactide. Then, the star-shaped POSS-PLA based polyurethanes (POSS-PLAUs) were synthesized by cross-linking POSS-PLAs with various PLA arm lengths and polytetramethylene ether (PTMEG) with hexamethylene diisocyanate (HDI). Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) were utilized to characterize the structures of the materials. Differential scanning calorimetry (DSC) experiments were carried out to investigate the glass transition temperature (Tg) of POSS-PLAUs and crystallinity of PTMEG. Dynamic mechanical analysis (DMA) and stress relaxation experiments were used to study the dynamic mechanical properties and stress relaxation behaviors of POSS-PLAUs. Cyclic thermal mechanical and physical shape recovery tests were used to study the shape memory properties. The effects of POSS and PLA arm length on the mechanical, thermal properties and the shape memory behaviors were investigated. In our system, PLA arm length has no significant effect on glass transition temperature (Tg). Tg increases with the POSS content in the networks due to the obstructed movement of the polymer chains caused by caged POSS. E′ increases from POSS-PLAU110 to POSS-PLAU530 due to the decreasing of PTMEG content. Dynamic mechanical analysis reveals a similar relationship of glass transition temperature to POSS content. The stress relaxation curves show an increase in initial stress in POSS-PLAUs with longer arm length due to lower PTMEG content. The relaxation ratio is higher for the polymer with shorter PLA arm length. The quick relaxation above the triggering temperature of POSS-PLAU with shorter PLA arm length is favorable for quick shape recovery. All the POSS-PLAUs have excellent shape memory properties with high shape fixity ratios above 99%, shape recovery ratios around 84% for the first cycle and above 89% for the second cycle. POSS-PLAUs with the shorter arm length show faster recovery speed due to the higher content of POSS cores.

Functionalization of polyhedral oligomeric silsesquioxane (POSS) via nucleophilic substitution

Octakis(3-chloropropyl)octasilsesquioxane, obtained recently by a new method, has enabled a highly efficient synthesis of a whole family of cube-like T8 silsesquioxanes by nucleophilic substitution of chlorine atom with appropriate nucleophilic agents. Fi

Highly efficient latent fingerprint detection by eight-dansyl-functionalized octasilsesquioxane nanohybrids

The largely demand in continued security issues makes necessary the development of novel materials with outstanding properties to improve the current detection techniques. In this context, latent fingerprint (LF) by fluorescent labeled materials (FLM) is one of the most attractive personnel identification methodologies. Here, two FLM based on polyhedral oligomeric silsesquioxane (POSS) nanohybrids labeled with dansyl chromophores have been synthesized and fully characterized. Their photophysical properties have confirmed that these materials clearly possess the prime qualifications as suitable LF sensing platforms. In fact, they adequately detect LFs on glassy surface with excellence legibility.