DSpace collection: 期刊論文

Nanoscale electrochemical characterization of a solid-state electrolyte using a manganese-based thin-film probe

Tue, 21 Apr 2026 06:57:46 GMT

title: Nanoscale electrochemical characterization of a solid-state electrolyte using a manganese-based thin-film probe abstract: 摘要： A Li-Mn-O thin-film electrode probe has been developed via a facile synthesis process, which enables nanoscale electrochemical investigation of the solid-state electrolyte LiPON. Detailed information of ion transport can be obtained by the thin-film probe, rather than the macroscale electrochemical impedance analysis. It is clarified from the nanoscale analysis that the charge transfer resistance at the Li-Mn-O/LiPON interface dominates the localized impedance, while it can be significantly reduced rather than the electrolyte resistance by applying a DC bias. A Li-Mn-O thin-film probe has been developed, which enables the topographical and nanoscale electrochemical investigations of LiPON. 出版日期： 2016-12-08 識別號： ISSN: 2040-3364 識別號： EISSN: 2040-3372 識別號： DOI: 10.1039/c6nr07733a

Directed crystallization of isotactic poly(2-vinylpyridine) for preferred lamellar twisting by chiral dopants

Tue, 21 Apr 2026 06:57:42 GMT

title: Directed crystallization of isotactic poly(2-vinylpyridine) for preferred lamellar twisting by chiral dopants abstract: 摘要： As reported in our previous work, banded spherulites of isotactic poly(2-vinylpyridine) (iP2VP) with preferred handedness of twisted lamellae can be formed by the inducement of chiral dopants, i.e., (R)- or (S)-hexahydromandelic acids (HMAs). In the present work, we systematically studied the behaviors of chirality transfer in the crystallization of iP2VP associated with the chiral dopant. As evidenced by the signatures of the split-type Cotton effect of circular dichroism (CD) spectra, the chains of iP2VP exhibit exclusive conformational chirality, i.e., induced circular dichroism (ICD), due to the complexation of chiral dopants (configurational chirality) with the lone-pair electron of the iP2VP. With the same growth axis along the radial direction of the banded spherulites, as indicated by selected area electron diffraction (SAED), the helical sense of the twisted lamellae of the iP2VP with ICD can be driven by the chiral dopants. The handedness of the helical chains remains after crystallization with intrinsic crystalline structure of iP2VP, which was revealed by the corresponding results of CD spectroscopy. As a result, a homochiral evolution from the configurational chirality of chiral dopant to the hierarchical chirality of crystallized iP2VP can be developed through directed crystallization of the iP2VP by chiral HMAs. [Display omitted] •Systematical study on the directed crystallization of isotactic poly(2-vinylpyridine) by chiral dopants.•Banded spherulites of iP2VP with preferred handedness are induced by (R)- and (S)-HMAs through chirality transfer.•The handedness of the lamellae in the banded spherulites of iP2VP is controlled by the induced chain conformation. 出版者： Kidlington: Elsevier Ltd 出版日期： 2016-12-19 出處： Polymer (Guilford), 2016-12, Vol.107, p.44-53 版權： 2016 Elsevier Ltd 版權： Copyright Elsevier BV Dec 19, 2016 識別號： ISSN: 0032-3861 識別號： EISSN: 1873-2291 識別號： DOI: 10.1016/j.polymer.2016.11.016

Isothermal titration calorimetry for drug design: Precision of the enthalpy and binding constant measurements and comparison of the instruments

Tue, 21 Apr 2026 06:57:39 GMT

title: Isothermal titration calorimetry for drug design: Precision of the enthalpy and binding constant measurements and comparison of the instruments abstract: 摘要： Isothermal titration calorimetry (ITC) is one of the most robust label- and immobilization-free techniques used to measure protein – small molecule interactions in drug design for the simultaneous determination of the binding affinity (ΔG) and the enthalpy (ΔH), both of which are important parameters for structure-thermodynamics correlations. It is important to evaluate the precision of the method and of various ITC instrument models by performing a single well-characterized reaction. The binding between carbonic anhydrase II and acetazolamide was measured by four ITC instruments – PEAQ-ITC, iTC200, VP-ITC, and MCS-ITC and the standard deviation of ΔG and ΔH was determined. Furthermore, the limit of an approach to reduce the protein concentration was studied for a high-affinity reaction (Kd = 0.3 nM), too tight to be measured by direct (non-displacement) ITC. Chemical validation of the enthalpy measurements is discussed. 其他題名： Anal Biochem 出版者： United States: Elsevier Inc 出版日期： 2016-12-15 出處： Analytical biochemistry, 2016-12, Vol.515, p.61-64 版權： 2016 Elsevier Inc. 版權： Copyright © 2016 Elsevier Inc. All rights reserved. 識別號： ISSN: 0003-2697 識別號： EISSN: 1096-0309 識別號： DOI: 10.1016/j.ab.2016.10.005 識別號： PMID: 27717855

Live Templates of a Supramolecular Block Copolymer for the Synthesis of Ordered Nanostructured TiO2 Films via Guest Exchange

Tue, 21 Apr 2026 06:57:34 GMT

title: Live Templates of a Supramolecular Block Copolymer for the Synthesis of Ordered Nanostructured TiO2 Films via Guest Exchange abstract: 摘要： In this work, we introduce a facile method based on host-guest chemistry to synthesize a range of nanostructured TiO materials using supramolecular templates of a dendron-jacketed block copolymer (DJBCP). The DJBCP is composed of amphiphilic dendrons (4'-(3,4,5-tridodecyloxybenzoyloxy)benzoic acid, TDB) selectively incorporated into a P4VP block of polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP) via hydrogen bonding. The PS-b-P4VP host acts as a structure-directing template, while the guest molecules (TDB) assist the self-assembly nanostructures and zone-axis alignment, resulting in the nanostructured template of vertically oriented cylinders formed via successive phase transformations from Im3̅m to R3̅m to P6mm upon thermal annealing in the doctor-blade-cast film. The guest molecules subsequently direct the titania precursors into the P4VP domains of the templates via supramolecular guest exchange during immersion of the film in a designated precursor solution containing a P4VP-selective solvent. The subsequent UV irradiation step leads to the formation of PS-b-P4VP/TiO hybrids. Finally, removal of the host template by calcination leaves behind mesoporous channels and makes sacrifices to be a carbon source for carbon-doping TiO materials. Various TiO nanoarchitectures, namely, vertical and wiggly micrometer-length channels, inverse opals, fingerprint-like channels, heterogeneous multilayers, and nanotubes, have been fabricated by highly tunable DJBCP nanostructures. 其他題名： ACS Appl Mater Interfaces 出版者： United States 出版日期： 2016-12-07 出處： ACS applied materials & interfaces, 2016-12, Vol.8 (48), p.33221-33229 資源來源： American Chemical Society Journals 識別號： ISSN: 1944-8244 識別號： EISSN: 1944-8252 識別號： DOI: 10.1021/acsami.6b12216 識別號： PMID: 27934174