A5035688859- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Dendrimers and Hyperbranched Polymers
- Catalytic Alkyne Reactions
- Advanced biosensing and bioanalysis techniques
- Advanced Polymer Synthesis and Characterization
- Asymmetric Hydrogenation and Catalysis
- Catalytic C–H Functionalization Methods
- Block Copolymer Self-Assembly
- Asymmetric Synthesis and Catalysis
- Genomics and Chromatin Dynamics
- Conducting polymers and applications
- DNA and Nucleic Acid Chemistry
- Thin-Film Transistor Technologies
- RNA Interference and Gene Delivery
- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Polymer Nanocomposites and Properties
- Silicon Nanostructures and Photoluminescence
- Retinal Development and Disorders
- Oxidative Organic Chemistry Reactions
- Synthetic Organic Chemistry Methods
- Receptor Mechanisms and Signaling
- Synthesis and pharmacology of benzodiazepine derivatives
- Epoxy Resin Curing Processes
National Synchrotron Radiation Research Center
2011-2022
National Tsing Hua University
1995-2021
National Changhua University of Education
2013-2015
Preordering behavior of poly(trimethylene terephthalate) (PTT) upon cold crystallization was revealed via in situ simultaneous small/wide-angle X-ray scattering and differential scanning calorimetry (SAXS/WAXS/DSC) as well time-resolved Fourier transform infrared (FTIR) spectroscopy. In the induction stage prior to appearance WAXS crystalline peaks, changes low-q (0.005−0.03 Å−1) range SAXS profiles suggested formation mesomorphic domains (with a linear dimension ∼18 nm). Parallel DSC FTIR...
This study provides new evidence on a long postulated mechanism of phase separation in polymer/fullerene mixture during spin coating for controlled nanodomains oriented crystallization and heterojunctions that favor applications polymer solar cells (PSCs). The simultaneous nanoscale the are traced using situ grazing‐incidence small‐ wide‐angle X‐ray scattering. Combined with complimentary results from time‐resolved optical reflectance spectroscopy, transient stratification liquid film...
Abstract The study synthesized a trifluoromethyl (CF 3 ) groups with modified epoxy resin, diglycidyl ether of bisphenol F (DGEBF), using environmental friendly methods. resin was cured 4,4′‐diaminodiphenyl‐methane (DDM). For comparison, this also investigated curing commercially available A (DGEBA) the same agent by varying ratios DGEBF. structure and physical properties resins were characterized to investigate effect injecting fluorinated into structures. Regarding thermal behaviors...
Polyamidoamine (PAMAM) dednrimer bearing a well-defined number of amine groups can be protonated under physiological or acidic condition to generate the macrocations capable forming electrostatic complex (called "dendriplex") with DNA for gene delivery. Using small-angle X-ray scattering (SAXS) and small angle neutron (SANS), here we constructed morphological map PAMAM dendrimer generation four (G4) in terms charge density nominal N/P ratio given by feed molar group phosphate group. With...
Interfacial morphologies of hierarchically phase-separated domains in supramolecular dendron-jacketed block copolymers (DJBCP) are directed via liquid-crystalline (LC) phases the dendronized blocks. The DJBCP is formed with a dendron 4′-(3,4,5-trioctyloxybenzoyloxy)benzoic acid (TOB), selectively incorporated into P4VP poly(styrene)-block-poly(4-vinylpyridine) (PS-b-P4VP). Revealed from small- and wide-angle X-ray scattering as well transmission electron microscopy, hexagonally packed...
Small angle X-ray scattering reveals linker DNA-induced partial unwrapping of nucleosomal DNA on the nucleosome core particle (NCP) and impact NCP interaction demonstrating crucial role DNA.
The electrostatic complex of DNA with poly(amidoamine) G6 dendrimer (called "dendriplex") is used as a model system to resolve if pure interaction can lead the key structural features nucleosome. Both and histone octamer (HO) are found attract wrap helically around them comparable pitch lengths; however, superhelical trajectory in dendriplex loose fluctuating, whereas that nucleosome tight rigid. DNA-wrapped particles closely spaced along fiber, while core (NCPs) array separated by...
A procedure has been developed for the concise synthesis of hexahydro-1H-isoindole derivatives starting from phenacyl bromides. The approach employs a sequence involving an initial indium-mediated allenylation reaction arylacyl bromide with propargyl bromide. This process is followed by FeBr3-mediated SN2'-type substitution formed homoallenic bromohydrin to produce 2,5-dibromo-4-aryl-1,3-pentadiene, which then subjected sequential, one-pot N-alkylation N-allyl-N-(p-tosyl)amine and highly...
The micellization behavior of novel tertiary amine methacrylate-based ABA type triblock copolymers formed by poly[2-(dimethylamino)ethyl methacrylate] [PDMA] middle block and poly[2-(diethylamino)ethyl [PDEA] or poly[2-(diisopropylamino)ethyl [PDPA] side blocks, PDPAm-b-PDMAn-b-PDPAl, PDEAm-b-PDMAn-b-PDEAl was investigated. Both types were water-soluble had potential for various applications due to their self-assembled the bottom-up nanoscale micellar construction. aggregations in aqueous...
A dendron amphiphile 4′-(3,4,5-trioctyloxybenzoyloxy)benzoic acid (TOB) is designated to bind, via hydrogen bonding, into vinylpyridine blocks of polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP), for a high TOB grafting density 0.7. Stretching followed by specific annealing enables the TOB-jacketed P4VP blocks, P4VP(TOB)0.7, exhibit several liquid crystal (LC) phases with increasingly better packing strength, from bilayer smectic highly oriented and hexagonally packed columnar phase;...
Time-resolved, grazing incidence small- and wide-angle X-ray scattering together with in situ UV-Vis reflectance spectroscopy unveil the surface layering early stage of spin-coating a polymer-fullerene mixture, which drives surface-down local phase separation over flow- to evaporation-dominated stages film formation for mutually confined intercalated nanodomains polymer crystallites fullerene aggregates. This is reported by Chun-Jen Su, U-Ser Jeng, co-workers article number 1601842.
Electrostatic compaction of dsDNA induced by a positively charged poly(amidoamine) dendrimer (PAMAM) generation four produced two unique types DNA mesophases, in which the bent into superhelices packed tetragonal or hexagonal lattice.
Abstract The new route for the synthesis of furane derivatives is based on indium promoted reaction arylacyl bromides with propargyl as key step.
In this work, we present in depth structural investigations of nanocomposite ZnO: Ge thin films by utilizing a state the art grazing incidence small angle x-ray spectroscopy (GISAXS) technique. The samples have been deposited sequential r.f. and d.c. sputtering ZnO film layers, respectively, on single crystal Si(100) substrates. Transformation layers into nanoparticles (Ge-np) has initiated ex-situ rapid thermal annealing asprepared at 600 °C for 30, 60, 90 s under forming gas atmosphere. A...
Abstract A synthesis of hexahydro‐1H‐isoindoles (IV) and (VIII) is achieved by a base promoted reaction homoallenic bromohydrins (II) (VII).
The retina segments obtained from Mice-664 C57BL/6J eyeballs were investigated at 23A1 IASW- Beamline, NSRRC. Transmission small and wide-angle scattering (SAXS WAXS) measurements the related data used to reach nanoscale natural morphology internal structural information of ROS. Rhodopsin macromolecules in their medium (inside rods retina) successfully detected. X-ray effects rhodopsin mice eyeball surgically separated samples carried out most situation molecules same animal species...