Carbazole- and/or triphenylamine-based D–π–D multiarylamino dyes: synthesis, characterization and photophysical properties

Zhao, Bin; Zhao, Weidong; Yu, Liujian; Li, Jie; Zhao, Yuming; Wang, Tao

doi:10.1039/c7nj02657a

Cited by 28 publications

(44 citation statements)

References 81 publications

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“…However, as presented in Figure (b), as the amount of the flame‐retardant TGIC–AA–DOPO increased, the holes gradually disappeared, and a more continuous and compact char layer surface was formed. Such a structure is beneficial in isolating heat and hindering pyrolysis gas transport; thereby, it protects the underlying matrix from further combustion . The change in the char residue morphologies agreed well with the good flame retardancy of the TGIC–AA–DOPO/901‐VERs discussed in the sections on the LOI, UL‐94, and cone calorimetry tests.…”

Section: Resultssupporting

confidence: 71%

Phosphorus–nitrogen‐type fire‐retardant vinyl ester resin with good comprehensive properties

Duan

Yin

et al. 2019

J of Applied Polymer Sci

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In this study, a series of fire‐retardant vinyl ester resins (VERs) were obtained via the copolymerization of phosphorus–nitrogen‐containing acrylate [1,3,5‐triglycidyl isocyanurate (TGIC)–acrylic acid (AA)–9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO)] and the widely used vinyl ester resin 901 (901‐VER). The influences of the TGIC–AA–DOPO additive amount on 901‐VER were comprehensively evaluated via the measurement of the flame retardancy, thermal performance, and mechanical properties. In the case of 30 and 40% TGIC–AA–DOPO, the thermosets acquired limited oxygen index values of 30.8 and 31.7%, respectively, and reached vertical burning (UL‐94) ratings of V‐1 and V‐0, respectively. In addition, their peak heat‐release rates, average heat‐release rates, total heat release values, average effective heats of combustion, and total smoke productions decreased significantly. These results demonstrated the great progress of 901‐VER in fireproofing performance. More importantly, the flame‐retardant VER thermosets showed good thermal properties and castings, and glass‐fiber‐reinforced composites based on the developed fire‐retardant VERs possessed comparable tensile strength, flexural strength, and better tensile modulus comparing to those based on neat 901‐VER when the TGIC–AA–DOPO amount was no greater than 30%. From an integrated perspective, 901‐VER with 30% TGIC–AA–DOPO was the best desired. The excellent flame retardancy, thermal performance, and mechanical properties promise the as‐obtained VER important applicable values. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47997.

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Section: Resultssupporting

confidence: 71%

Phosphorus–nitrogen‐type fire‐retardant vinyl ester resin with good comprehensive properties

Duan

Yin

et al. 2019

J of Applied Polymer Sci

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“…TGA was used to investigate the thermal stability behavior of the composites because it determines the ideal working temperature of materials. [36] The thermograms of the sample without initiator and with DCP and BIPB cross‐linked with 1,2‐PB/SBS/EPDM composites are shown in Figure 2A,B, and the relevant data are presented in Table 3. Figure 2 shows that all the composites exhibited similar thermal degradation characteristics, in which the weight loss curve shows one step.…”

Section: Resultsmentioning

confidence: 99%

Different Organic Peroxides that Cure Low‐k 1,2‐PB/SBS/EPDM Composites for High‐Frequency Substrate

Mao

Wang

et al. 2020

Vinyl Additive Technology

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Since the advent of 5G network, polymeric low dielectric constant (low‐k) materials have been indispensable for high speed and stable signal transmission at microwave frequency. Herein, the low‐k composites of 1,2‐polybutadiene/styrene‐butadiene‐styrene triblock copolymer/ethylene‐propylene‐dicyclopentadiene (1,2‐PB/SBS/EPDM) were prepared with cured organic peroxide. Two structurally different organic peroxides, namely dicumyl peroxide (DCP) and bis(1‐(tert‐butylperoxy)‐1‐methylethyl)‐benzene (BIPB), were used as free‐radical initiators. The composites with highly efficient initiator—BIPB exhibited considerably enhanced conversion rate, thermal stability, and cross‐link density compared with the DCP system. Furthermore, the increased cross‐link density contributed to dielectric stability over a broad range of frequency (3‐15 GHz) and superior mechanical properties. The cross‐linked composites possessed the typical low polarity group of C─C single bond with suppressed dielectric constant (Dk) and loss (Df). Especially, the average Dk of 2.36 and average Df of 0.0054 were obtained for the composite containing 4 part‐by‐weight (pbw) BIPB. This work demonstrated that the 1,2‐PB/SBS/EPDM composite with 4 pbw BIPB is a good candidate for high‐frequency substrate materials.

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“…2-Aminobenzamides and their derivatives, which are generally used for the preparation of complex nitrogen-containing compounds (see Figure 1 A), 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 have attracted special research interest due to their remarkable applications as important reactive intermediates in organic synthesis, such as in the synthesis of the quinazoline derivatives 19 Hyminal (methaqualone), Afloqualone, Luotonin F, Bouchardatine, Sildenafil, etc. (see Figure 1 B).…”

Section: Table 1 Reaction Optimization Amentioning

confidence: 99%

“…1 2 3 4 5 6 7 8 9 10 11 These skeletons could be easily synthesized from 2-aminobenzamides. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Besides, these 2-aminobenzamides scaffolds also exist in various biological active agents such as anticancer, antimicrobial, anti-inflammatory, anticonvulsant, anti-tubercular, antiviral, and antimalarial agents. 1 6 9 11…”

Section: Table 1 Reaction Optimization Amentioning

confidence: 99%

UV-Light-Induced Dehydrogenative N-Acylation of Amines with 2-Nitrobenzaldehydes To Give 2-Aminobenzamides

et al. 2022

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A simple, mild, green and efficient method for the synthesis of 2-aminobenzamides was highly desired in organic synthesis. Herein, we developed an efficient, one-pot strategy for the synthesis of 2-aminobenzamides with high yields irradiated by UV light. 32 examples proceeded successfully by this photo-induced protocol. The yield reached up to 92%. The gram scale was also achieved easily. This building block could be applied in the preparation of quinazolinones derivatives. Amino acid derivatives could be employed smoothly at room temperature. Finally, a plausible mechanism was proposed.

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Carbazole- and/or triphenylamine-based D–π–D multiarylamino dyes: synthesis, characterization and photophysical properties

Abstract: One-photon and two-photon fluorescence quenching by benzoyl peroxide of D–π–D multiarylamino dyes was investigated.

Cited by 28 publications

References 81 publications

Phosphorus–nitrogen‐type fire‐retardant vinyl ester resin with good comprehensive properties

Phosphorus–nitrogen‐type fire‐retardant vinyl ester resin with good comprehensive properties

Different Organic Peroxides that Cure Low‐k 1,2‐PB/SBS/EPDM Composites for High‐Frequency Substrate

UV-Light-Induced Dehydrogenative N-Acylation of Amines with 2-Nitrobenzaldehydes To Give 2-Aminobenzamides

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