Search

Your search keyword '"Kang, Jia‐Jhen"' showing total 13 results
Start Over Author "Kang, Jia‐Jhen"
13 results on '"Kang, Jia‐Jhen"'

1. Polyelectrolyte-protein synergism: pH-responsive polyelectrolyte/insulin complexes as versatile carriers for targeted protein and drug delivery

Author

Murmiliuk, Anastasiia, Iwase, Hiroki, Kang, Jia-Jhen, Mohanakumar, Shilpa, Appavou, Marie-Sousai, Wood, Kathleen, Almásy, László, Len, Adél, Schwärzer, Kuno, Allgaier, Jürgen, Dulle, Martin, Gensch, Thomas, Förster, Beate, Ito, Kanae, Nakagawa, Hiroshi, Wiegand, Simone, Förster, Stephan, and Radulescu, Aurel

Published
2024
Full Text
View/download PDF

2. Upgrade of JCNS SANS instrument KWS-2 for improved performance and beam-time efficiency

Author

Radulescu Aurel, Kang Jia-Jhen, Appavou Marie-Sousai, and Papagiannopoulos Aristeidis

Subjects
Physics, QC1-999
Abstract

KWS-2 is a classical small angle neutron diffractometer where, following recent upgrades, the pinhole mode with different neutron-wavelengths and detector distances can be combined with focusing mode with MgF2 lenses to reach a wide Q-range between 2x10−4 and 1.0 Å−1. Further upgrades of the detection system and sample positioning system are currently in progress. A wide-angle detection prototype is currently being tested and optimized aiming at measurement conditions over an extended Q-range up to 2.0 Å−1, which will be beneficial for semi-crystalline materials and small biological morphologies. The high neutron flux provided by the FRMII reactor and transported by the optimized neutron guidance system requires an adjustment of the measurement routine for a more rational use of the beam time. A new versatile in-beam sample positioning system, which includes a multi-position carousel with temperature control, robotic elements, and a storage pool for sample cuvettes, has just been installed at the instrument’s sample position. This allows the instrument to be continuously supplied with samples and provides the ability to combine experiments on similar samples or topics into a common long experimental session. Here we report in detail on the expanded Q-range option of the KWS-2 from the perspective of current performance and planned upgrades, as well as the new sample positioning system with robotic elements.

Published
2023
Full Text
View/download PDF

4. Rigid-to-Flexible Transition in a Molecular Brush in a Good Solvent at a Semidilute Concentration

Author

Kang, Jia-Jhen, primary, Sachse, Clemens, additional, Ko, Chia-Hsin, additional, Schroer, Martin A., additional, Vela, Stefano Da, additional, Molodenskiy, Dmitry, additional, Kohlbrecher, Joachim, additional, Bushuev, Nikita V., additional, Gumerov, Rustam A., additional, Potemkin, Igor I., additional, Jordan, Rainer, additional, and Papadakis, Christine M., additional

Published
2022
Full Text
View/download PDF

5. Structural Properties of Micelles Formed by Telechelic Pentablock Quaterpolymers with pH-Responsive Midblocks and Thermoresponsive End Blocks in Aqueous Solution

Author

Jung, Florian A., Panteli, Panayiota A., Ko, Chia-Hsin, Kang, Jia-Jhen, Barnsley, Lester C., Tsitsilianis, Constantinos, Patrickios, Costas S., Papadakis, Christine M., Patrickios, Costas S. [0000-0001-8855-0370], Tsitsilianis, Constantinos [0000-0002-7265-9037], and Panteli, Panayiota A. [0000-0001-7920-0934]

Subjects
chemistry.chemical_classification, Aqueous solution, Hydrodynamic radius, Polymers and Plastics, Organic Chemistry, 02 engineering and technology, Polymer, 010402 general chemistry, 021001 nanoscience & nanotechnology, Methacrylate, 01 natural sciences, Micelle, Polyelectrolyte, 0104 chemical sciences, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Dynamic light scattering, Chemical engineering, ddc:540, Materials Chemistry, 0210 nano-technology, Ethylene glycol
Abstract

We investigated the structural properties of dynamic micelles arising from the self-assembly of the multiresponsive pentablock quaterpolymer P(nBuMA8-co-TEGMA8)-b-PDMAEMA50-b-PEG46-b-PDMAEMA50-b-P(nBuMA8-co-TEGMA8) (nBuMA, TEGMA, DMAEMA, and EG are n-butyl methacrylate, tri(ethylene glycol) methyl ether methacrylate, 2-(dimethylamino)ethyl methacrylate, and ethylene glycol, respectively) in aqueous solution using a combination of scattering methods. In this multisegmented polymer, a pH-responsive BAB triblock copolymer from the weak cationic polyelectrolyte PDMAEMA and the hydrophilic PEG is end-capped by two blocks comprising random sequences of thermoresponsive TEGMA units and hydrophobic nBuMA units. Dynamic light scattering revealed the existence of single micelles and small clusters in dilute aqueous solution. The hydrodynamic radius of the micelles depends strongly on pH and temperature. The inner structure of the micelles was investigated by small-angle X-ray scattering, small-angle neutron scattering, and static light scattering, and micelles with a hydrophobic core containing a rather high fraction of water and a strongly swollen corona were found. The ratio of loops and dangling ends depends on temperature and pH. 52 24 9746 9758

Published
2019

6. Strukturuntersuchung an molekularen Bürsten

Author

Kang, Jia-Jhen, Papadakis, Christine M. (Prof., Ph.D.), and Hugenschmidt, Christoph P. (Prof. Dr.)

Subjects
Physik, Polymer, Molekulare Bürsten, Kleinwinkelstreuung, dynamischer Lichtstreuung, Ingenieurwissenschaften, polymers, molecular brushes, small-angle scattering, dynamic light scattering, ddc:530, ddc:620
Abstract

Molecular brushes are densely-grafted polymers. In this thesis, their conformation-concentration relation and their thermoresponsive behavior in solution are investigated using small-angle scattering, dynamic light scattering and cryo-electron microscopy. Molekulare Bürsten sind dichtgepfropfte Polymere. In dieser Arbeit werden ihre Konformations-Konzentrations-Beziehung und ihr thermoresponsives Verhalten in Lösungen mit Kleinwinkelstreuung, dynamischer Lichtstreuung und Kryo-Elektronenmikroskopie untersucht.

Published
2021

7. Highly Tunable Nanostructures in a Doubly pH‐Responsive Pentablock Terpolymer in Solution and in Thin Films

Author

Jung, Florian A., primary, Schart, Maximilian, additional, Bührend, Lukas, additional, Meidinger, Elisabeth, additional, Kang, Jia‐Jhen, additional, Niebuur, Bart‐Jan, additional, Ariaee, Sina, additional, Molodenskiy, Dmitry S., additional, Posselt, Dorthe, additional, Amenitsch, Heinz, additional, Tsitsilianis, Constantinos, additional, and Papadakis, Christine M., additional

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results