Carbon based Y-type molecules for application in nonlinear optics

Yang, Congqiao; He, Yuanyuan; Zheng, Xiaoyuan; Chen, Jiu; Yang, Ling; Li, Weiqi; Tian, Wei Quan

doi:10.1039/c9tc06023e

Cited by 89 publications

(128 citation statements)

References 50 publications

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“…, azulene-embedded nanographene 26,27 and azulene-defected GNRs. 21,28 In this work, the designed X-type molecules are polyacene based molecules with azulenes at four end-corners (Fig. 1) and similar systems have been successfully synthesized.…”

Section: Models and Computational Detailsmentioning

confidence: 99%

“…Accordingly, considerable efforts have been devoted toward synthesizing and predicting carbon based molecules fused with azulenes in various patterns, e.g., azulene-embedded nanographene 26,27 and azulene-defected GNRs. 21,28 In this work, the designed X-type molecules are polyacene based molecules with azulenes at four end-corners (Fig. 1) and similar systems have been successfully synthesized.…”

Section: Models and Computational Detailsmentioning

confidence: 99%

“…The predicted static first hyperpolarizability (〈 β 0 〉) of azulene is larger than that of p -nitroaniline (PNA). 21 Based on the strong NLO response of azulene and the good π-conjugation of carbon nanomaterials, a series of X-type GNRs with azulene defects are designed (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

“…Besides the modifications of the ZGNR edge, introduction of chromophores is another means to enhance NLO responses. Organic materials of various shapes, such as H-type, 19 Y-type, 20,21 V-type 22 and X-type, 23,24 with donor-acceptor chromophores have been investigated experimentally and theoretically. The predicted static first hyperpolarizability (hb 0 i) of azulene is larger than that of p-nitroaniline (PNA).…”

Section: Introductionmentioning

confidence: 99%

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Tuning the edge states in X-type carbon based molecules for applications in nonlinear optics

Yang

Zheng

Tian

et al. 2022

Phys. Chem. Chem. Phys.

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Section: Models and Computational Detailsmentioning

confidence: 99%

Section: Models and Computational Detailsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Tuning the edge states in X-type carbon based molecules for applications in nonlinear optics

Yang

Zheng

Tian

et al. 2022

Phys. Chem. Chem. Phys.

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“…Indeed, the case fatality rate (CFR; the percentage of deaths among positively diagnosed infections) increases sharply with age: from <1% below the age of 50 years, to 2-3% around 60 years, and as much as 10-20% above the age of 80 (Supplementary Figure 1B). The main risk factors that add to this age-related CFR include hypertension, cardiovascular diseases, diabetes mellitus (DM) and severe obesity (18)(19)(20)(21)(22)(23)(24), with varying impact depending on the country (25). The precedent SARS-CoV-1 showed a similar clinical profile and also affected more severely the elderly and those with diabetes and hypertension (26)(27)(28).…”

Section: Introductionmentioning

confidence: 99%

Elevated Blood Glucose Levels as a Primary Risk Factor for the Severity of COVID-19

Logette

Lorin

Favreau

et al. 2021

Preprint

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SARS-CoV-2 started spreading towards the end of 2019 causing COVID-19, a disease that reached pandemic proportions among the human population within months. The reasons for the spectrum of differences in the severity of the disease across the population, and in particular why the disease affects more severely the aging population and those with specific preconditions are unclear. We developed machine learning models to mine 240,000 scientific papers openly accessible in the CORD-19 database, and constructed knowledge graphs to synthesize the extracted information and navigate the collective knowledge in an attempt to search for a potential common underlying reason for disease severity. The literature repeatedly pointed to elevated blood glucose as a key facilitator in the progression of COVID-19. Indeed, when we retraced the steps of the SARS-CoV-2 infection we found evidence linking elevated glucose to each step of the life-cycle of the virus, progression of the disease, and presentation of symptoms. Specifically, elevations of glucose provide ideal conditions for the virus to evade and weaken the first level of the immune defense system in the lungs, gain access to deep alveolar cells, bind to the ACE2 receptor and enter the pulmonary cells, accelerate replication of the virus within cells increasing cell death and inducing an pulmonary inflammatory response, which overwhelms an already weakened innate immune system to trigger an avalanche of systemic infections, inflammation and cell damage, a cytokine storm and thrombotic events. We tested the feasibility of the hypothesis by analyzing data across papers, reconstructing atomistically the virus at the surface of the pulmonary airways, and performing quantitative computational modeling of the effects of glucose levels on the infection process. We conclude that elevation in glucose levels can facilitate the progression of the disease through multiple mechanisms and can explain much of the variance in disease severity seen across the population. The study proposes diagnostic recommendations, new areas of research and potential treatments, and cautions on treatment strategies and critical care conditions that induce elevations in blood glucose levels.HighlightsPatients with severe COVID-19 commonly present with elevated blood glucose levels.Elevated blood glucose impacts numerous biochemical pathways that can facilitate many steps of the SARS-CoV-2 infection.Elevated blood glucose increases glucose in the pulmonary airway surface liquid (ASL), which breaks down the primary innate antiviral defenses of the lungs and facilitates viral infection and replication.Elevated blood glucose causes dysregulations of the immune response that facilitates the cytokine storm and acute respiratory distress syndrome (ARDS).Elevated glucose levels act synergistically with SARS-CoV-2-dependent inactivation of angiotensin-converting enzyme 2 (ACE2) to escalate the disease to multi-organ failure and thrombotic events.

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In Situ Carbon Insertion in Laminated Molybdenum Dioxide by Interlayer Engineering Toward Ultrastable “Rocking‐Chair” Zinc‐Ion Batteries

Wang

Yan

Zhang

et al. 2021

Adv Funct Materials

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Aqueous zinc-ion batteries (ZIBs) have attracted significant attention due to their intrinsic safety, cost-effectiveness, and environmental friendliness. However, the common zinc metal anode suffers from zinc dendrite formation, self-corrosion, and surface passivation, which impede the further application of aqueous ZIBs. Herein, carbon-inserted molybdenum dioxide (MoO 2 ) materials with laminated structure are designed as novel intercalation-type anodes for ZIBs by combination of interlayer engineering and in situ carbonization of aniline guest in molybdenum trioxide interlayers. The uniform dispersion of carbon layers in laminated MoO 2 not only provide fast transportation paths for electron but also strengthen the framework of MoO 2 , leading to high structural integration during high-rate cycling. Benefiting from the unique structural design, the carbon-inserted MoO 2 electrode exhibits high initial Coulombic efficiency, excellent cycling stability, and outstanding rate capability. Multiple ex situ characterizations reveal its excellent electrochemical stability is derived from reversible intercalation mechanism and ultrastable structural framework. Furthermore, the rocking-chair zinc-ion full battery assembled with the zinc pre-intercalated Na 3 V 2 (PO 4 ) 2 O 2 F cathode presents excellent stability and ultralong lifespan with a high capacity retention of 91% over 8000 cycles.

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Carbon based Y-type molecules for application in nonlinear optics

Abstract: Introduction of polar azulenes and further functionalization significantly enhance the NLO properties of carbon based materials.

Cited by 89 publications

References 50 publications

Tuning the edge states in X-type carbon based molecules for applications in nonlinear optics

Tuning the edge states in X-type carbon based molecules for applications in nonlinear optics

Elevated Blood Glucose Levels as a Primary Risk Factor for the Severity of COVID-19

In Situ Carbon Insertion in Laminated Molybdenum Dioxide by Interlayer Engineering Toward Ultrastable “Rocking‐Chair” Zinc‐Ion Batteries

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