Synthesis and Performances of Hydrocinnamic Acid Derivatives Containing Alkyl Dihydrazide

In this work, four hydrocinnamic acid derivatives including N, N’-succinic bis(hydrocinnamic acid) dihydrazide (HASUD), N, N’-adipic bis(hydrocinnamic acid) dihydrazide (HAADD), N, N’-sebacic bis(hydrocinnamic acid) dihydrazide (HASED) and N, N’-dodecanedioic bis(hydrocinnamic acid) dihydrazide (HADOD) were synthesized via two liquid reactions. And then fourier transform infrared spectrometer and 1H nuclear magnetic resonance were used to characterize molecular structures of four hydrocinnamic acid derivatives. Additionally, the orthogonal experiment obtained the optimum synthesis process of four hydrocinnamic acid derivatives, and the maximum yield of HASUD, HAADD, HASED and HADOD were 33.3%, 43.2%, 43.5% and 51.9%, respectively. DMol3 was used to optimize geometric structure and obtain frontier orbital energy. Finally, hydrocinnamic acid derivatives and poly(L-lactide) (PLLA) were blended using the torque rheometer to investigate these role in PLLA resin. The resultant from the melt-crystallization process showed that hydrocinnamic acid derivatives as heterogeneous nucleating agents could significantly enhance PLLA’s crystallization.

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Facile preparation of g-C3N4 modified BiOCl hybrid photocatalyst and vital role of frontier orbital energy levels of model compounds in photoactivity enhancement

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2013.10.052 ◽

2014 ◽

Vol 416 ◽

pp. 212-219 ◽

Cited By ~ 91

Author(s):

Shan Shi ◽

M.A. Gondal ◽

A.A. Al-Saadi ◽

Radek Fajgar ◽

Jaroslav Kupcik ◽

...

Keyword(s):

Energy Levels ◽

Vital Role ◽

Orbital Energy ◽

Frontier Orbital ◽

Model Compounds ◽

Facile Preparation ◽

Frontier Orbital Energy ◽

Hybrid Photocatalyst

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The role of positively charge poly-L-lysine in the formation of high yield gold nanoplates on the surface for plasmonic sensing application

PLoS ONE ◽

10.1371/journal.pone.0259730 ◽

2021 ◽

Vol 16 (11) ◽

pp. e0259730

Author(s):

Marlia Morsin ◽

Suratun Nafisah ◽

Rahmat Sanudin ◽

Nur Liyana Razali ◽

Farhanahani Mahmud ◽

...

Keyword(s):

Substrate Surface ◽

Surrounding Medium ◽

Resonance Effect ◽

Maximum Yield ◽

Single Layer ◽

Localized Surface Plasmon ◽

High Yield ◽

Synthesis Process ◽

Wavelength Shift ◽

Plasmonic Sensor

An anisotropic structure, gold (Au) nanoplates was synthesized using a two-step wet chemical seed mediated growth method (SMGM) directly on the substrate surface. Prior to the synthesis process, poly-l-lysine (PLL) as a cation polymer was used to enhance the yield of grown Au nanoplates. The electrostatic interaction of positive charged by PLL with negative charges from citrate-capped gold nanoseeds contributes to the yield increment. The percentage of PLL was varied from 0% to 10% to study the morphology of Au nanoplates in term of shape, size and surface density. 5% PLL with single layer treatment produce a variety of plate shapes such as hexagonal, flat rod and triangular obtained over the whole substrate surface with the estimated maximum yield up to ca. 48%. The high yield of Au nanoplates exhibit dual plasmonic peaks response that are associated with transverse and longitudinal localized surface plasmon resonance (TSPR and LSPR). Then, the PLL treatment process was repeated twice resulting the increment of Au nanoplates products to ca. 60%. The thin film Au nanoplates was further used as sensing materials in plasmonic sensor for detection of boric acid. The anisotropic Au nanoplates have four sensing parameters being monitored when the medium changes, which are peak position (wavelength shift), intensity of TSPR and LSPR, and the changes on sensing responses. The sensor responses are based on the interaction of light with dielectric properties from surrounding medium. The resonance effect produces by a collection of electron vibration on the Au nanoparticles surface after hit by light are captured as the responses. As a conclusion, it was found that the PLL treatment is capable to promote high yield of Au nanoplates. Moreover, the high yield of the Au nanoplates is an indication as excellent candidate for sensing material in plasmonic sensor.

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Synthesis of Linkages to Generate Specified Histories of Forces and Torques: The Planar 4R Four-Bar Mechanism

13th Design Automation Conference: Volume 2 — Robotics, Mechanisms, and Machine Systems ◽

10.1115/detc1987-0084 ◽

1987 ◽

Author(s):

C. Bagci

Keyword(s):

Return Time ◽

Synthesis Process ◽

Synthesis Methods ◽

Multiplication Factor ◽

Optimum Synthesis ◽

Torque Generation ◽

Gear Drives ◽

Position Synthesis ◽

Internal Gear ◽

Generation Problem

Abstract Analytical precision position and optimum synthesis methods for linkages to generate specified force and torque histories are presented and applied to the planar four-bar mechanism. Mechanical advantage method (MAM) and integration of power equilibrium method (IPEM) are used to develop design equations. MAM yields design equations to use when the torque multiplication factor is defined at discrete number of design positions, as well as in continuous forms. IPEM requires continuous forms, but it reduces the torque generation problem into a function generation problem. Design equations with one, two, three, and four unknowns are developed for precision position synthesis; and they are used to formulate optimum synthesis process using many design positions that requires no iteration. Generation of infinite torque multiplication factor and synthesis of quick-return four-bar mechanism to generate specified advance-to-return time ratio are also considered. The synthesized four-bar mechanisms replace circular and non-circular external and internal gear drives. Several industrial application examples are included. The second part of the article considers the slider-crank mechanism.

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Role of the Organic Matrix in the Biopolymer-Mediated Synthesis of Platelike YBCO

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.699.268 ◽

2013 ◽

Vol 699 ◽

pp. 268-272 ◽

Cited By ~ 2

Author(s):

Zi Li Zhang ◽

Stuart C. Wimbush ◽

Ahmed Kursumovic ◽

Hong Li Suo ◽

Judith L. MacManus Driscoll

Keyword(s):

Organic Matrix ◽

Molecular Structures ◽

Biomimetic Synthesis ◽

Synthesis Process ◽

Final Size ◽

Whole Process ◽

Structural And Electrical Properties ◽

Organic Matrices ◽

Superconducting Ceramic

The biomimetic method of achieving dense platelike grain growth of the high temperature superconducting ceramic YBa2Cu3O7 (YBCO) has been studied. By using various organic matrices (dextran and chitosan) having different molecular structures, the final size and arrangement of the platelike YBCO grains exhibit significant differences, possible reasons for which are discussed. The different organic matrices used also indirectly affect the superconducting properties of the YBCO formed. By elucidating the role of the organic matrix in the biomimetic synthesis process in this way, the whole process could be controlled more precisely, leading to structural and electrical properties of the final product more desireable for specific applications.

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Thiazole as a weak electron-donor unit to lower the frontier orbital energy levels of donor–acceptor alternating conjugated materials

Chemical Communications ◽

10.1039/c3cc45481a ◽

2013 ◽

Vol 49 (85) ◽

pp. 9938 ◽

Cited By ~ 30

Author(s):

Elena Zaborova ◽

Patricia Chávez ◽

Rony Bechara ◽

Patrick Lévêque ◽

Thomas Heiser ◽

...

Keyword(s):

Electron Donor ◽

Energy Levels ◽

Orbital Energy ◽

Frontier Orbital ◽

Conjugated Materials ◽

Donor Acceptor ◽

Weak Electron ◽

Frontier Orbital Energy

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Production of Biodiesel in Supercritical Methanol and Related Correlation on Phase Equilibrium

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.560-561.555 ◽

2012 ◽

Vol 560-561 ◽

pp. 555-562 ◽

Cited By ~ 2

Author(s):

Dan Zeng ◽

Yang Li ◽

Tao Fang

Keyword(s):

Phase Equilibrium ◽

Soybean Oil ◽

Orthogonal Experiment ◽

Methyl Esters ◽

Maximum Yield ◽

Influential Factors ◽

Supercritical Methanol ◽

Reaction Conditions ◽

Equilibrium Data ◽

Final Yield

Biodiesel was prepared by methyl esterification and effects of different reaction conditions on the yield of fatty acid methyl esters (FAMEs) were investigated. The result of the orthogonal experiment analysis shows that the order of influential factors is ranked as reaction temperature > methanol-to-soybean-oil (M/O) ratio > reaction time. The maximum yield of 94.8 % has been achieved by reacting supercritical methanol and soybean oil in M/O ratio 4:2 (v/v) at 573 K for 45 min. Moreover, the higher M/O ratio, the higher yield of FAMEs will be obtained. At the temperature ranging from 533 k to 573 k, the yield rises significantly; however, since soybean oil decomposes over 573 K, the yield decreases oppositely. Time longer than 45 min has less effect on the final yield. In addition, the phase equilibrium data of supercritical methanol + C12 methyl esters and supercritical methanol + C18 methyl esters were separately correlated using the Peng-Robinson (PR) equation of state (EOS) with the Adachi-Sugie (AS) mixing rule.

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