Synthesis, nonlinear optical, magnetic and electrical properties of ultra-stable open-shell pancake bonding linked perylene diimide anion radicals π-oligomer

Dong, Danyang; Li, Qizhe; Hou, Wenlong; Zhang, Haiquan

doi:10.1016/j.molstruc.2019.127002

Cited by 10 publications

(7 citation statements)

References 26 publications

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“…134 The presence of free radicals is correlated to the surrounding conditions. 34 As shown in Figure 8a, the group [TA + H 2 O 2 + Pd 55 -G5MCI] had the maximal absorption at 430 nm. Figure 8b shows that the fluorescence intensities of TA, TA + Pd 55 -G5MCI, TA + H 2 O 2 , and TA + H 2 O 2 +Pd 55 -G5MCI were 19.7, 10.5, 406.6, and 1223.0, respectively.…”

Section: Resultsmentioning

confidence: 94%

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Biocompatible Dendrimer-Encapsulated Palladium Nanoparticles for Oxidation of Morin

et al. 2019

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Development of highly efficient catalysts to expedite the degradation of organic dyes has been drawing great attention. The aggregation of catalysts reduces the accessibility of catalytic centers for organic dyes and therefore decreases their catalytic ability. Herein, we report a facile method to prepare highly biocompatible and stable dendrimer-encapsulated palladium nanoparticles (Pdn-G5MCI NPs), which exhibit high catalytic efficiency for oxidation of morin. The biocompatible dendrimers were prepared via surface modification of G5 polyamidoamine (G5 PAMAM) dendrimers using maleic anhydride and l-cysteine. Then, they were incubated with disodium tetrachloropalladate, followed by reduction using sodium borohydride to generate Pdn-G5MCI NPs. Transmission electron microscopy results demonstrated that palladium nanoparticles (Pd NPs) inside Pdn-G5MCI had small diameters (1.77–2.35 nm) and monodisperse states. Dynamic light scattering results confirmed that Pdn-G5MCI NPs had good dispersion and high stability in water. Furthermore, MTT results demonstrated that Pdn-G5MCI NPs had high biocompatibility. More importantly, Pdn-G5MCI NPs successfully catalyzed the decomposition of H2O2 to the hydroxyl radical (•OH), and the generated •OH quickly oxidized morin. This reaction kinetics followed pseudo-first-order kinetics. Apparent rate constant (kapp) is an important criterion for evaluating the catalytic rate. The concentrations of Pdn-G5MCI NPs and H2O2 were positively correlated with kapp, whereas the correlation between the concentration of morin and kapp was negative. The prepared Pdn-G5MCI NPs have great potential to catalyze the degradation of organic dyes in bio-related systems in the future.

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Section: Resultsmentioning

confidence: 94%

“…Liu and coworkers reported that Ag 2 S-montmorillonites catalyzed the decomposition of H 2 O 2 into • OH . The presence of free radicals is correlated to the surrounding conditions . As shown in Figure a, the group [TA + H 2 O 2 + Pd 55 -G5MCI] had the maximal absorption at 430 nm.…”

Section: Resultsmentioning

confidence: 99%

Biocompatible Dendrimer-Encapsulated Palladium Nanoparticles for Oxidation of Morin

et al. 2019

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“…Antioxidant activity plays an important role in the protection of our body from harm of free radical. 43,44 Fig. 7 showed that when the concentration of Pd 150 -LNT NPs increased from 0.27 to 1.33 mg mL À1 , the antioxidant activity increased from 20% to 60%, indicating effective free radical inhibition by Pd 150 -LNT NPs.…”

Section: Dpph Free Radical Scavenging Assaymentioning

confidence: 98%

Green synthesis of palladium nanoparticles using lentinan for catalytic activity and biological applications

et al. 2019

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“…At present, the design and synthesis of high-performance NLO materials in organic and inorganic systems still meet major challenges [ 4 ]. In recent decades, many materials exhibited good optical nonlinearity, including organic materials [ 5 , 6 , 7 , 8 ], perovskite quantum dots [ 9 ], nanoclusters [ 10 , 11 , 12 , 13 , 14 ], organic-inorganic hybrid materials [ 1 , 15 , 16 ], etc. Among them, organic compounds that are easy to synthesize, with the advance of lower dielectric coefficients, have attracted wide attention [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Design of A-D-A-Type Organic Third-Order Nonlinear Optical Materials Based on Benzodithiophene: A DFT Study

Gong

Tong

et al. 2022

Nanomaterials

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The acceptor-donor-acceptor (A-D-A) type conjugated organic molecule has been widely applied in the organic optoelectronics field. A total of Nine compounds (1–9) were designed under the A-D-A framework, with the electron donor benzodithiophene as the core and dicyanomethylene as the acceptor moiety, modifying the benzodithiophene with the phenyl, naphthyl, and difluorinated phenyl groups. The conjugation length can be changed by introducing a thiophene π-conjugated bridge. The geometric structures, electronic structure, excited state properties, aromaticity, and the static- and frequency-dependent second hyperpolarizabilities were investigated by employing high-precision density functional theory (DFT) calculations with an aug-cc-pVDZ basis set. As a result, the three compounds with the longest conjugation length exhibit a smaller energy gap (Egap), larger UV-vis absorption coefficient, and response range, which are the three strongest third-order nonlinear optical (NLO) response properties in this work. This work systematically explored the connection between molecular structure and NLO response, which provides a rational design strategy for high-performance organic NLO materials.

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Synthesis, nonlinear optical, magnetic and electrical properties of ultra-stable open-shell pancake bonding linked perylene diimide anion radicals π-oligomer

Cited by 10 publications

References 26 publications

Biocompatible Dendrimer-Encapsulated Palladium Nanoparticles for Oxidation of Morin

Biocompatible Dendrimer-Encapsulated Palladium Nanoparticles for Oxidation of Morin

Green synthesis of palladium nanoparticles using lentinan for catalytic activity and biological applications

Design of A-D-A-Type Organic Third-Order Nonlinear Optical Materials Based on Benzodithiophene: A DFT Study

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