High-Sensitivity Poly(dendrimer)-Based Sensors for the Detection of Explosives and Taggant Vapors

Loch, Alex S.; Stoltzfus, Dani M.; Burn, Paul L.; Shaw, Paul E.

doi:10.1021/acs.macromol.0c00060

Cited by 23 publications

(22 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Graphene‐based sensors were demonstrated that platforms were designed to incorporate pristine graphene, graphene oxide, and nanopatterned graphene, which showed excellent potential in the explosive trace detection 94 . In particular, poly(dendrimers) were reported for identifying nitro‐based explosives 95 . Furthermore, a promising platform of field‐effect transistors based on silicon nanowires (SiNWs) has been developed for selective and sensitive identification 96 .…”

Section: Hazardous Chemicalsmentioning

confidence: 99%

On‐Site Detection for Hazardous Materials in Chemical Accidents

Kim

Joo

2020

Bulletin Korean Chem Soc

View full text Add to dashboard Cite

Chemical accidents, such as fire, explosion, and leakages, not only cause damage to humans but also have a harmful impact on the environment. In modern industrialization period, researchers have been attracted by the elaboration of novel detection platforms that have been widely adopted for monitoring and the early warning of the risk of hazardous chemicals including hydrogen fluoride, hydrogen chloride, nitric acid, ammonia, hydrogen peroxide, chlorine gas, formaldehyde, aromatic compounds such as benzene‐toluene‐xylene, and heavy metals. This review explores novel sensor platforms based on novel materials including plasmonic metals, transition metal oxides, and composites. Due to the unique optical, spectroscopic, electrical, and physicochemical properties of materials, the development of functional materials‐based sensors significantly augments the current outlook on reducing the risk of hazardous chemical accidents to ensure security for humans and the environment.

show abstract

Section: Hazardous Chemicalsmentioning

confidence: 99%

On‐Site Detection for Hazardous Materials in Chemical Accidents

Kim

Joo

2020

Bulletin Korean Chem Soc

View full text Add to dashboard Cite

show abstract

“…[ 3,4 ] Thus, research of high energy and insensitivity of explosives has attracted some attention. [ 5,6 ] 1,3,5‐Triamino‐2,4,6‐trinitrobenzene (TATB) is a thermally stable, insensitive high explosive that is favorable for preparing insensitive munitions. TATB has attracted great attention and is widely used in the field of EMs.…”

Section: Introductionmentioning

confidence: 99%

Self‐Assembly Method for Insensitive DAAF/FOX‐7 Composite Crystals with Microspheres Structure

Liu

Xie

et al. 2021

Crystal Research and Technology

View full text Add to dashboard Cite

Highly efficient design for the formulation of explosives is desired for accelerating the development of energetic materials. These investigations are focused on the preparation of the compounds 3,3′‐diamino‐4,4′‐azoxyfurazan (DAAF) and 1,1‐diamino‐2,2‐dinitroethylene (FOX‐7). DAAF/FOX‐7 microspheres are prepared via the self‐assembly method using different mass ratios of DAAF and FOX‐7. Materials Studio is used to analyze the intermolecular binding energy (Ebind) of the composite system. DAAF/FOX‐7 with a mass ratio of 90:10 shows a higher Ebind (183.24 kJ mol−1) and peak temperature at the heating rate of 0 °C min−1 (266.2 °C) than DAAF/FOX‐7 with a mass ratio of 70:30 and DAAF/FOX‐7 with a mass ratio of 80:20; this indicates that DAAF/FOX‐7 (90:10) shows better thermal stability. EXPLO5 is used to analyze the detonation velocity of the composite system, and the detonation velocity of DAAF/FOX‐7 microspheres increase by 0.5 km s−1 compared to that of DAAF. The characteristic drop height of impact sensitivity is more than 100 cm, and this demonstrates that the microspheres exhibit good safety performance. The morphology, crystal structure, thermal decomposition property, and impact sensitivity of the microspheres are investigated and compared. X‐ray diffraction and Fourier transform infrared spectroscopy results indicate that the structure of the DAAF/FOX‐7 composite is not changed compared to that of the raw material.

show abstract

“…[1][2][3][4] These monodispersed dendritic polymers exhibit wide applications in the field of catalysis, sensing, molecular electronics, photonics, fluorescence, and therapeutics. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] After Tomalia's first report on poly(amidoamine) (PAMAM) dendrimers in 1985, 20 many research groups have reported the synthesis dendritic macromolecules using ether, ester, carbosilane, amide, and alkyne linkages. [21][22][23][24][25][26][27][28][29][30][31][32][33] Nevertheless, very few have reported the synthesis of dendrimers having urethane linkage.…”

Section: Introductionmentioning

confidence: 99%

Thiol-Ene Click Inspired Late-Stage Modification of Long-Chain Polyurethane Dendrimers

Poudel

Taylor²

2021

Preprint

View full text Add to dashboard Cite

Compared to the synthesis of polyurethane polymers, construction of well-defined polyurethane dendrimers is challenging due to the high reactivity of externally added or in-situ formed isocyanates leading to the formation of side products. For this reason, the synthesis of dendritic polyurethanes is limited to very few reports. With primary focus of dendrimer research on the interaction of the periphery and the core, we report the synthesis of a common polyurethane dendron, which allows for late-stage variation of both the periphery and the core. The periphery can be varied simply by installing a clickable unit in the dendron and then attaching to the core and vice-versa. Thus, a common dendron allows for varying periphery and core in just two steps. To accomplish this, protecting group free one-pot multicomponent Curtius reaction was utilized to afford a robust and versatile AB2 type polyurethane dendron employing commercially available simple molecules 5-hydroxyisophthalic acid, 11-bromoundecanol, and 4- penten-1-ol. Subsequent late-stage modification of either dendrons or dendrimers via thiol-ene click reaction gave surface?functionalized alternating aromatic-aliphatic polyurethane homodendrimers to generation-three (G3). The dendrons and the dendrimers were characterized by NMR, mass spectrometry, and FT-IR analysis. A bifunctional AB2 type dendritic monomer demonstrated this approach's versatility that can either undergo a thiol-one click or attachment to the core. This approach enables the incorporation of functionalities at the periphery and the core that may not withstand the dendrimer growth for the synthesis of polyurethane dendrimers and other dendritic macromolecules

show abstract

High-Sensitivity Poly(dendrimer)-Based Sensors for the Detection of Explosives and Taggant Vapors

Cited by 23 publications

References 31 publications

On‐Site Detection for Hazardous Materials in Chemical Accidents

On‐Site Detection for Hazardous Materials in Chemical Accidents

Self‐Assembly Method for Insensitive DAAF/FOX‐7 Composite Crystals with Microspheres Structure

Thiol-Ene Click Inspired Late-Stage Modification of Long-Chain Polyurethane Dendrimers

Contact Info

Product

Resources

About