Materials Literature
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Two low-band-gap conjugated polymers were designed and synthesized with alternating difluorinated quinoxaline(DFQx) or monofluorinated quinoxaline(FQx) as an electron-deficient unit and alkoxyl substituted benzo[1,2-b:4,5-b']dithiophene (BDT) as an electron-rich unit. The weight-averaged molecular of PBDT-DFQx and PBD…
Adjustment of clothing pressure of compression wear is critical to physiological and psychological satisfaction of the wearer, however, there are limited studies on the relationship among extensibility of textile materials, pattern reduction of compression wear and resultant clothing pressure. The ultimate purpose of…
Biofilms are aggregates of microorganisms present in a self-produced matrix of extracellular polymeric substance (EPS) adhered to a surface. Formation of a biofilm in the environment on farms and in dairy plants comprises several stages: attachment, growth (development), and detachment. Generally, biofilms are harmful…
The NiO nanofibers with nano-sized grains were prepared by an electrospinning, and the subsequent thermal process under air atmosphere. Afterwards, the NiO/Polyaniline (PANI) composites were synthesized by coating PANI by in-situ oxidative polymerization on the surface of NiO nanofibers. The NiO/PANI composites provid…
Herein, we demonstrate large surface area and ultrahigh porosity of three-dimensional ultralight, macro- and micro-porous reduced graphene oxide (m2-rGO) monoliths by simple and clean activation chemistry. The resultant actived m2-rGO adsorbents are applied into supercapacitor to demonstrate the superiority of hierarc…
More and more newly registered drugs are proteins. Although many of them suffer from instabilities in aqueous media, the most common way of protein drug administration still is the injection of a solution. Numerous protein drugs require frequent administration, but suitable controlled release systems for proteins are…
Over the last few decades, polyaniline (PANI) has found a wide range of applications due to its electrical properties, reversible redox behaviors and environmental stability. Here, we first present a simple way of preparing PANI nanostructures with three different aspect ratios, namely, nanospheres, nanorods, and nano…
In this work, we prepared the flexible hybrid film with graphite nanoplatelet (GNP) and a minimum use of SWNT. The hybrid film was prepared by casting method with varying the acid-treatment time of carbon fillers. It was observed that the hybrid films from acid-treated carbon filler show the highly increased electrica…
本研究將二氧化矽與金屬有機骨架HKUST-1製備成核殼複合材料，並將其導入至Nafion高分子中，以重鑄法製備具良好分散性之質子交換複合膜且應用於燃料電池，探討奈米複合材料對單電池效能展現之影響。 由結果顯示，利用材料外層包覆的二氧化矽，保護內部HKUST-1在高溫環境下水分的散失，使其單電池效能提升。複合膜之保水率(Water Uptake)可提升40 wt.%~70 wt.%，質子導電度也都優於未添加任何奈米材料之RN膜。單電池測試結果，60 °C、全加濕環境(99.9 %)，FC-3之單電池有最佳的功率密度為718 mW cm-2，比RNFC高出約60 %；在80 °C、全加濕環境，FC-3之單電池最佳功率密度為642 mW…
Organic bulk heterojunction photovoltaic devices based on a series of three naphtho[2,1-b:3,4-b’]dithiophene (NDT) derivatives blended with phenyl-C71-butyric acid methyl ester were studied. These three derivatives, which have NDT units with various thiophene-chain lengths, were employed as the donor polymers. The inf…
Polymer solar cells (PSCs), especially bulk heterojunction (BHJ) PSCs comprising p-conjugated polymers and fullerene derivatives have attracted much interest in recent years due to their solution processability and flexibility, which potentially allow them to be manufactured using low-cost, high-throughput processes s…
In this work, the silicon nitride on carbon fiber surfaces were synthesized directly from the wet-thermal reaction via an 3-aminopropyltriethoxysilane (APS) without additives under N2/NH3 mix gas at high temperature (1400℃). Silicon nitride synthesis was investigated in terms of heating temperature, time, and content…
In this study, ACFs were manufactured through physical activation between steam and CO2 using pitch-based carbon fibers, whose raw materials are inexpensive and easy to secure, to investigate the structural changes, such as in the specific surface area and micropore volume, and to evaluate how such changes affect the…
We were designed and studied two asymmetric alkylphenyl-substituted anthracene for small molecule solar cells applications, NDHPEA and TNDHPEA. The first such molecule was 9,10-bis((4-hexylphenyl) ethynyl)-2-(naphthalen-2-yl)anthracene (NDHPEA), a small molecule containing an alkylphenyl-substituted-anthracene core un…
This chapter summarizes the research on the development of compartmented fibres for self-healing fibre reinforced polymer composite applications. The compartmented fibre concept combines the advantages of both capsule based and hollow fibre based extrinsic healing strategies: the mesoscopic fibre geometry facilitates…
Euroform with steel frame and plywood contact surface and aluminum form with aluminum frame made to improve some of the shortcomings of euroform and aluminum contact surface have mainly been used at a domestic construction site for concrete placement. Aluminum form, however, has some disadvantage that need improvement…
In recent years, polymers and small molecules based on diketopyrrolopyrole(DPP) have been extensively studied in organic solar cells due to its planar structural features. By comparing with the polymers, small molecules have several advantages such as ease of synthesis and purificaion. In this study, we synthesized a…
최근 각광을 받고 있는 Organic Light Emitting Diodes(OLED)는 재료 측면에서 크게 저분자와 고분자로 분류된다. 저분자는 정제가 용이하며 효율과 수명면에서 고분자에 비해 뛰어나지만, 소자를 제작함에 있어 증착이라는 방법을 사용하기 때문에 대면적화에 어려움이 있다. 반면에 고분자는 Spin coating 방법을 사용하여 대면적화에 유리하지만, 증착을 하는 저분자에 비해 효율과 수명이 낮으며, 정제에 큰 어려움이 있다. 따라서 여기에선 저분자와 고분자의 장점인 정제가 용이하며, 증착과 Spin coating 을 이용한 소자 제작이 모두 가능한…
In this study, we investigate how the surface functional groups on OMC support can enhance the catalyst activity for APR of polyol. CMK-3 support having a 2-D hexagonal structure was used as a support material and prepared using 4 different carbon precursors such as FA (furfural alcohol), SC (sucrose), MP (mesoporous…
The dry reforming of propane with CO2 was carried out in a thermocatalytic reactor. The catalytic performance of AAO supported catalysts with various nickel and Ceria loadings at different reaction temperatures. The obtained results show that both C3H8 and CO2 conversions increased with increasing ceria loading up to…