Search results for: Jem-Kun Chen

Items from 1 to 20 out of 74 results

article

Immobilization of antibody conjugated ZnS quantum dots onto poly(2,6-dimethyl-1,4-phenylene oxide) nanofibers with Poly(N-isopropylacrylamide) grafts as reversibly fluorescence immunoassay

Jian-Wei Guo, Yi-Hui Wu, Po-Li Wei, Yan-Jiun Huang, more

Dyes and Pigments > 2018 > 159 > C > 198-208

In this study a reversibly fluorescence immunoassay was prepared through grafting, using hydrogen bonding, of an antibody-conjugated ZnS quantum dots (ZQD-antiHA) onto an electrospun poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) fibrous mats (EPFM) with poly (n-isopropylacrylamide) (PNIPAAm) grafts. The PPO was first electrospun into a fibrous mat, then brominated and reacted with NaN₃ to generate...

article

Fabrication of ordered metallic glass nanotube arrays for label-free biosensing with diffractive reflectance

Wei-Ting Chen, Shao-Sian Li, Jinn P. Chu, Kuei Chih Feng, more

Biosensors and Bioelectronics > 2018 > 102 > C > 129-135

In this study, a photoresist template with well-defined contact hole array was fabricated, to which radio frequency magnetron sputtering process was then applied to deposit an alloyed Zr₅₅Cu₃₀Al₁₀Ni₅ target, and finally resulted in ordered metallic glass nanotube (MGNT) arrays after removal of the photoresist template. The thickness of the MGNT walls increased from 98 to 126nm upon increasing the...

article

Binary-blend fibber-based capture assay of circulating tumor cells for clinical diagnosis of colorectal cancer

Ai-Wei Lee, Fu-Xiang Lin, Po-Li Wei, Guo Jian-Wei, more

Journal of Nanobiotechnology > 2018 > 16 > 1 > 1-16

Background In addition to conventional approaches, detecting and characterizing CTCs in patient blood allows for early diagnosis of cancer metastasis. Methods We blended poly(ethylene oxide) (PEO) into nylon-6 through electrospinning to generate a fibrous matbased circulating tumour cells (CTCs) assay. The contents of nylon-6 and PEO in the electrospun blend fibrous mats (EBFMs) were optimized to...

article

Robust, sensitive and facile method for detection of F−, CN− and Ac− anions

P. Madhusudhana Reddy, Shih-Rong Hsieh, Jem-Kun Chen, Chi-Jung Chang, more

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy > 2017 > 186 > C > 8-16

Sensing of F⁻, CN⁻ and Ac⁻ is important from the viewpoint of both medically and environmentally. Particularly, sensing of the anions in 100% water by a colorimetric chemical sensor is a highly difficult task as water molecules interfere the sensing mechanism. In this regard, sensor R1, having azo and nitrophenyl groups as signaling units and thiourea as a binding site was prepared. This sensor exclusively...

article

Fabrication of device with poly(N-isopropylacrylamide)-b-ssDNA copolymer brush for resistivity study

Yi-Zu Liu, May-Show Chen, Chih-Chia Cheng, Shih-Hsun Chen, more

Journal of Nanobiotechnology > 2017 > 15 > 1 > 1-13

In this study, we grafted bromo-terminated poly(N-isopropylacrylamide) (PNIPAAm) brushes onto thin gold films deposited on silicon, and then reacted with NaN₃ to produce azido-terminated PNIPAAm brushes. A probe sequence of single-stranded DNA (ssDNA) with a 4-pentynoic acid succinimidyl ester unit was grafted onto the azido-terminated PNIPAAm brushes through a click reaction, resulting in the formation...

article

In Situ Polymerization and Characteristics of Biodegradable Waterborne Thermally-Treated Attapulgite Nanorods and Polyurethane Composites

Chia-Hung Liu, Hsun-Tsing Lee, Chi-Hui Tsou, Jia-Hao Gu, more

Journal of Inorganic and Organometallic Polymers and Materials > 2017 > 27 > 1 > 244-256

This study used thermal treatment to modify attapulgite (AT) to form thermally treated attapulgite (TAT). The process involved removing the AT functional groups at 600 °C and using in situ polymerization to synthesize TAT water-based polyurethane (TAT/WPU) nanocomposite materials. Transmission electron microscopy results show that the TAT was evenly dispersed among the WPU matrices. Subsequently,...

article

Amplification of Hofmeister effect on poly(n-isopropylacrylamide) by crown ether

P. Madhusudhana Reddy, Shih-Rong Hsieh, Chi-Jung Chang, Yun-Yi Leong, more

Colloids and Surfaces A: Physicochemical and Engineering Aspects > 2017 > 528 > C > 1-9

Indeed, the relative strength of specific ion effect on macromolecule/biomacromolecules increases with increasing concentration. However, the utilization of high ion concentration may lead to aggregation or precipitation of macromolecule/biomacromolecule. Therefore, in the present study, we provided a potential alternative method to tune the strengths of “salting-in” and “salting-out” effects of Hofmeister...

article

Synthesis and luminescence properties of long-chain (2,7-carbazolyl)-adamantane copolymers

Yingchun Liu, Jianwei Guo, Tao Luo, Hangbo Yue, more

Journal of Polymer Research > 2017 > 24 > 8 > 1-7

Several long-chain (2,7-carbazolyl) adamantane copolymers, with molecular weight ranging from 4500 to 6000, were synthesized by palladium-catalyzed Suzuki reaction using 1,5-bis (4-bromophenyl) adamantane and N-(2-ethylhexyl)-2,7-carbazole as building molecules. The copolymers were characterized by infrared, ultraviolet, nuclear magnetic resonance (NMR), fluorescence spectroscopies, and thermal analysis...

article

Visualization platform of one-dimensional gratings of tethered polyvinyltetrazole brushes on silicon surfaces for sensing of Cr(III)

Jun-Ru Zeng, Chih-Chia Cheng, Ai-Wei Lee, Po-Li Wei, more

Microchimica Acta > 2017 > 184 > 8 > 2723-2730

Polyacrylonitrile (PAN) was grafted on silica (Si) surfaces in the form of one-dimensional (1D) gratings to form well-defined line patterns. The tethered PAN 1D gratings were then subjected to a cyano-to-tetrazole conversion reaction to generate a tethered polyvinyltetrazole (PVT) 1D grating. This results in different properties for the transverse magnetic (TM) and transverse electric (TE) polarizations,...

article

Pillar arrays of tethered polyvinyltetrazole on silicon as a visualization platform for sensing of lead ions

Jun-Ru Zeng, Chih-Chia Cheng, Bohr-Ran Huang, Chi-Hsien Huang, more

Sensors and Actuators B: Chemical > 2017 > 243 > C > 234-243

Using click reactions, we have grafted N-propargyl polyacrylonitrile (PAN) to a dot matrix presenting azido-terminated surfaces on a silicon substrate to generate pillar arrays of two-dimensional photonic crystals (2DPCs). The tethered PAN 2DPCs were then subjected to a cyano-to-tetrazole conversion reaction to generate tethered polyvinyltetrazole (PVT) 2DPCs. Over 88% of the cyano groups on the PAN...

article

Fabrication of two-dimensional photonic crystals of tethered polyvinyltetrazole on silicon surfaces for visualization in Cu2+ ion sensing

Jun-Ru Zeng, Chih-Chia Cheng, Chi-Jung Chang, Chi-Hsien Huang, more

Dyes and Pigments > 2017 > 139 > C > 300-309

We grafted polyacrylonitrile (PAN) from a flat silicon substrate via atom transfer radical polymerization (ATRP) as a bottom layer. Fabrication processes, involving very-large-scale integration (VLSI) and reactive ion etching (RIE), are sequentially used to generate 800 nm-diameter hole array of tethered PAN layer as two-dimensional photonic crystals (2DPCs). The tethered PAN 2DPCs were then subjected...

article

Self-assembled supramolecular polymers with tailorable properties that enhance cell attachment and proliferation

Chih-Chia Cheng, Duu-Jong Lee, Jem-Kun Chen

Acta Biomaterialia > 2017 > 50 > C > 476-483

Self-assembled supramolecular scaffolds, a combination of noncovalent interactions within a biocompatible polymer substrate, can be used for efficient construction of highly-controlled self-organizing hierarchical structures; these newly-developed biomaterials exhibit excellent mechanical properties, tunable surface hydrophilicity, low cytotoxicity and high biodegradability, making them highly attractive...

article

Supramolecular polymer micelles as universal tools for constructing high-performance fluorescent nanoparticles

Chih-Chia Cheng, Zhi-Sheng Liao, Jyun-Jie Huang, Duu-Jong Lee, more

Dyes and Pigments > 2017 > 137 > C > 284-292

This study is the first attempt to encapsulate fluorescent rhodamine 6G (R6G) into supramolecular micelles as a means of manipulating the fluorescence color and quantum efficiency of R6G, and provides a quick and simple route towards the fabrication of high-efficiency fluorescent nanoparticles for next-generation lighting devices and biomedical image applications. We demonstrate that these R6G-loaded...

article

Rapid fabrication of carbon quantum dots as multifunctional nanovehicles for dual-modal targeted imaging and chemotherapy

Sheng-Hui Chiu, Gangaraju Gedda, Wubshet Mekonnen Girma, Jem-Kun Chen, more

Acta Biomaterialia > 2016 > 46 > C > 151-164

Herein, we synthesized an S, N, and Gd tri-element doped magnetofluorescent carbon quantum dots (GdNS@CQDs) within 10min by using a one-pot microwave method. Our results showed that these magnetofluorescent GdNS@CQDs have excellent fluorescent and magnetic properties. Moreover, GdNS@CQDs exhibited high stability at physiological conditions and ionic strength. These magnetofluorescent GdNS@CQDs were...

article

Supermolecules of poly(N-isopropylacrylamide) complexating Herring sperm DNA with bio-multiple hydrogen bonding

Ai-Wei Lee, Cheng-Chen Hsu, Yi-Zu Liu, Po-Li Wei, more

Colloids and Surfaces B: Biointerfaces > 2016 > 148 > C > 422-430

In this study we used the poly(N-isopropylacrylamide) (PNIPAAm) as a medium to blend with an organic DNA, herring sperm DNA (HSD), to generate PNIPAAm-HSD supramolecular complexes. Bio-multiple hydrogen bonding (BMHB) between PNIPAAm and HSD was investigated that changed the temperature responsiveness of PNIPAAm relatively to the HSD concentrations. With blending the HSD into PNIPAAm matrix, the phase...

article

Sol-gel-synthesized titania-vanadia nanocrystal films for triple-functional window coatings

Si-Ying Wu, Shuenn-Kung Su, Chi-Jung Chang, Chi-Hsien Huang, more

Ceramics International > 2016 > 42 > 15 > 17610- 17619

In this study we employed mixtures of titanium and vanadium sols, with various ratios of titanium to vanadium, in a polyvinylpyrrolidone solution to generate precursor titania-vanadia composites. Titania-vanadia nanocrystals (TVNCs) were then obtained after calcination at 700°C for 3h. Acanthosphere-, actinia-, and gear wheel-like structures appeared on the surfaces of the TVNCs when the ratio of...

article

Preparation of vanadium‐modified phenolic resin/modified zirconia composites and its applied properties in cubic boron nitride (cBN) grinding wheels

Chun‐Te Lin, Hsun‐Tsing Lee, Jem‐Kun Chen

Polymer Composites > 37 > 12 > 3354 - 3364

In this work, novolac bisphenol‐F‐based vanadium–phenolic resin/modified zirconia (Bis‐VPF/m‐ZrO) composites were obtained successfully. In the preparation process, ammonium vanadate reacted with Bis‐PF resin to form Bis‐VPF resin with the VO chemical bonds. Simultaneously, zirconia (ZrO₂) was modified with N‐(2‐aminoethyl‐3‐aminopropyl)trimethoxysilane (AEAPTMS). Then, this modified zirconia (m‐ZrO)...

article

Nucleobase‐Functionalized Supramolecular Micelles with Tunable Physical Properties for Efficient Controlled Drug Release

Chih‐Chia Cheng, I‐Hong Lin, Jem‐Kun Chen, Zhi‐Sheng Liao, more

Macromolecular Bioscience > 16 > 10 > 1415 - 1421

Complementary nucleobase‐functionalized polymeric micelles, a combination of adenine‐thymine (A‐U) base pairs and a blend of hydrophilic–hydrophobic polymer pairs, can be used to construct 3D supramolecular polymer networks; these micelles exhibit excellent self‐assembly ability in aqueous solution, rapid pH‐responsiveness, high drug loading capacity, and triggerable drug release. In this study, a...

article

Robust polymer grafted Fe3O4 nanospheres for benign removal of oil from water

P. Madhusudhana Reddy, Chi-Jung Chang, Jem-Kun Chen, Meng-Ting Wu, more

Applied Surface Science > 2016 > 368 > C > 27-35

Removal of oil from the oil–water mixture (O–W mixture) or oil-in-water emulsions (O/W emulsion) is highly imperative. We have fabricated two series of polymer grafted iron oxide (Fe₃O₄) nanospheres. The oil removal efficiency of the nanospheres was found to be dependent on the grafted amount of polymers. The polystyrene grafted Fe₃O₄ nanospheres have shown better oil removal efficiency than the corresponding...

article

Highly efficient drug delivery systems based on functional supramolecular polymers: In vitro evaluation

Chih-Chia Cheng, Feng-Chih Chang, Wan-Yi Kao, Shiaw-Min Hwang, more

Acta Biomaterialia > 2016 > 33 > C > 194-202

The novel concept of modifying and enhancing the properties of existing functional micelles through self-complementary interactions has significant potential. In this study, a practical approach to living polymerization of functionalized thermoresponsive monomers enabled the incorporation of self-constituted multiple hydrogen bonded groups into micelles that have potential as supramolecular drug-delivery...

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REFRACTIVE INDEX (5)
ATRP (3)
LAB-ON-A-CHIP (3)
POLY(N-ISOPROPYLACRYLAMIDE) (3)
POLYBENZOXAZINE (3)
SELF-ASSEMBLY (3)
TWO-DIMENSIONAL PERIODIC GRATING (3)
VERY-LARGE-SCALE INTEGRATION (3)
BISPHENOL-F (2)
CE-DOPED (2)
DRUG DELIVERY (2)
EFFECTIVE MEDIUM THEORY (2)
FLUIDIC DEVICE (2)
FLUIDIC SYSTEM (2)
GRATING (2)
HYDROGEN BOND (2)
HYDROGEN BONDING (2)
IMMUNOASSAY (2)
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MULTIPLE HYDROGEN BONDS (2)
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POLYMER BLEND (2)
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THERMOCHROMIC (2)
2,7-CARBAZOLE (1)
ADAMANTANE (1)
ADENINE (1)
ADSORBENT, GRAFTING (1)
ALTERNATING MAGNETIC FIELD (1)
ALUMINUM NITRIDE AMMONIUM MOLYBDATE (1)
ANIONS (1)
ATOM TRANSFER RADICAL POLYMERIZATION (1)
ATOM TRANSFER RADICAL POLYMERIZATION (ATRP) (1)
ATTAPULGITE (1)
AU NANOPARTICLE ASSEMBLY (1)
BIO-IMAGING (1)
BIOACTIVE SCAFFOLDS (1)
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BIOCOMPLEMENTARY INTERACTION (1)
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BIOMEMS (1)
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BLOCK COPOLYMER BRUSH (1)
BLOCK COPOLYMERS (1)
BLOOD (1)
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CARBON QUANTUM DOTS (1)
CELLS (BIOLOGY) (1)
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CIRCULATING TUMOUR CELL (1)
CLICK REACTION (1)
COLLOIDAL LITHOGRAPHY (1)
COLORECTAL CANCER DIAGNOSIS (1)
COLORIMETRIC (1)
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COPPER IONS (1)
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CORONA (1)
CROWDING AGENT (1)
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FERROFLUIDS (1)
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INFONA - science communication portal

Search results for: Jem-Kun Chen

Immobilization of antibody conjugated ZnS quantum dots onto poly(2,6-dimethyl-1,4-phenylene oxide) nanofibers with Poly(N-isopropylacrylamide) grafts as reversibly fluorescence immunoassay

Fabrication of ordered metallic glass nanotube arrays for label-free biosensing with diffractive reflectance

Binary-blend fibber-based capture assay of circulating tumor cells for clinical diagnosis of colorectal cancer

Robust, sensitive and facile method for detection of F−, CN− and Ac− anions

Fabrication of device with poly(N-isopropylacrylamide)-b-ssDNA copolymer brush for resistivity study

In Situ Polymerization and Characteristics of Biodegradable Waterborne Thermally-Treated Attapulgite Nanorods and Polyurethane Composites

Amplification of Hofmeister effect on poly(n-isopropylacrylamide) by crown ether

Synthesis and luminescence properties of long-chain (2,7-carbazolyl)-adamantane copolymers

Visualization platform of one-dimensional gratings of tethered polyvinyltetrazole brushes on silicon surfaces for sensing of Cr(III)

Pillar arrays of tethered polyvinyltetrazole on silicon as a visualization platform for sensing of lead ions

Fabrication of two-dimensional photonic crystals of tethered polyvinyltetrazole on silicon surfaces for visualization in Cu2+ ion sensing

Self-assembled supramolecular polymers with tailorable properties that enhance cell attachment and proliferation

Supramolecular polymer micelles as universal tools for constructing high-performance fluorescent nanoparticles

Rapid fabrication of carbon quantum dots as multifunctional nanovehicles for dual-modal targeted imaging and chemotherapy

Supermolecules of poly(N-isopropylacrylamide) complexating Herring sperm DNA with bio-multiple hydrogen bonding

Sol-gel-synthesized titania-vanadia nanocrystal films for triple-functional window coatings

Preparation of vanadium‐modified phenolic resin/modified zirconia composites and its applied properties in cubic boron nitride (cBN) grinding wheels

Nucleobase‐Functionalized Supramolecular Micelles with Tunable Physical Properties for Efficient Controlled Drug Release

Robust polymer grafted Fe3O4 nanospheres for benign removal of oil from water

Highly efficient drug delivery systems based on functional supramolecular polymers: In vitro evaluation

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