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201.
Chen C. Y. Kao C. L. Yeh H. C. Li H. T. Cheng M. J. Li W. J. 《Chemistry of Natural Compounds》2022,58(5):793-795
Chemistry of Natural Compounds - Cinnamosmophin (1), along with 12 known compounds, was isolated from the barks of Cinnamomum osmophloeum (Lauraceae). Their structures were unambiguously elucidated... 相似文献
202.
Chen C. Y. Kao C. L. Huang S. T. Yeh H. C. Li H. T. Wu M. D. Li W. J. Cheng M. J. 《Chemistry of Natural Compounds》2022,58(4):634-636
Chemistry of Natural Compounds - A new diphenyl ether, 3,3′-dihydroxy-2,2′,4,4′-tetramethoxy-6,6′-dimethyldiphenyl ether (1) was isolated from the woods of Aquilaria... 相似文献
203.
Shih-Yuan Lin Chih-Ming Wang Kuo-Sheng Kao Ying-Chung Chen Chan-Chih Liu 《Journal of Sol-Gel Science and Technology》2010,53(1):51-58
Molybdenum trioxide (MoO3) films were deposited on ITO/Glass substrates by the sol–gel method using a spin-coating technique and heat treated at various
temperatures under different ambient atmosphere. Effects of the process parameters on the electrochromic properties of MoO3 films were studied using cyclic voltammetry (CV) in a propylene carbonate (PC) non-aqueous solution containing 1 M lithium
perchlorate (LiClO4). Electrochromic MoO3 film on lithium intercalation was investigated by in-situ transmittance measurement during the CV process. The MoO3 films showed reversible recharge ability on Li+/e− intercalation/deintercalation. Experimental results revealed that the heat-treatment temperature, the ambient atmosphere,
and the thickness will have the string influence on the electrochromic properties of MoO3 thin films. X-ray diffraction (XRD) results show that the amorphous MoO3 films can be obtained with the heat-treatment temperature below 300 °C in O2 ambient atmosphere. The optimum electrochromic MoO3 film, with a thickness of 130 nm, exhibits a maximum transmittance variation (ΔT%) of 30.9%, an optical density change (ΔOD) of 0.213, an intercalation charge (Q) of 8.47 mC/cm2, an insertion coefficient x in Li
x
MoO3 was 0.21 and a coloration efficiency (η) of 25.1 cm2/C between the colored and bleached states at a wavelength (λ) of 550 nm. 相似文献
204.
205.
Cis-syn thymine dimers are the major photoproducts of DNA and are the principal cause of mutations induced by sunlight. To better understand the nature of base pairing with cis-syn thymine dimers, we have synthesized a decamer oligodeoxynucleotide (ODN) containing a cis-syn thymine dimer labeled at the N3 of both T's with 15N by two efficient routes from [3-15N]-thymidine phosphoramidite. In the postsynthetic irradiation route, an ODN containing an adjacent pair of [3-15N]-labeled T's was irradiated and the cis-syn dimer-containing ODN isolated by HPLC. In the mixed building block route, a mixture of cis-syn and trans-syn dimer-containing ODNs was synthesized from a mixture of [3-15N]-labeled thymine dimer phosphoramidites after which the cis-syn dimer-containing ODN was isolated by HPLC. The N3-nitrogen and imino proton signals of an (15)N-labeled thymine dimer-containing decamer duplex were assigned by 2D 1H-15N heterocorrelated HSQC NMR spectroscopy, and the 15N-1H coupling constant was found to be 1.8 Hz greater for the 5'-T than for the 3'-T. The larger coupling constant is indicative of weaker H-bonding that is consistent with the more distorted nature of the 5'-base pair found in solution state NMR and crystallographic structures. 相似文献
206.
207.
David Kao Deryn Graham Brian Knight Koulis Pericleous 《Applied Mathematical Modelling》2007,31(12):2684-2695
This paper describes hybrid mathematical model which couples the mechanics of the mass/spring model to the acoustic wave propagation model for use in generating the acoustic signal emitted by complex structures of paper fibres under strain. A discussion of the coupling method is presented including remarks on the errors encountered intrinsic to the discretisation scheme. The numerical results of a vibrating rubber band and a vibrating paper fibre are compared to their experimental counterparts. The fundamental frequencies of the acoustic signals are compared showing a close agreement between the experimental and numerical results. 相似文献
208.
Dr. Youming Zhang Hao-Che Kao Dr. Chao Shi Chengjun Wu Dr. Minrong Zhu Dr. Kai Li Prof. Dr. Chung-Chih Wu Prof. Dr. Chuluo Yang 《Chemistry (Weinheim an der Bergstrasse, Germany)》2022,28(2):e202103543
A series of [−2, −1, 0] charged-ligand based iridium(III) complexes of [Ir(bph)(bpy)(acac)] ( 1 ), [Ir(bph)(2MeO-bpy)(acac)] ( 2 ), [Ir(bph)(2CF3-bpy)(acac)] ( 3 ), [Ir(bph)(bpy)(2tBu-acac)] ( 4 ) and [Ir(bph)(bpy)(CF3-acac)] ( 5 ), which using biphenyl as dianionic ligand [−2], acetylacetone (or its derivatives) as monoanionic ligand [−1], and 2,2′-bipyridine (or its derivatives) as neutral ligand [0] were designed and synthesized. The chemical structures were well characterized. All of the ligands have simple chemical structures, thus further making the complexes have excellent thermal stability and are easy to sublimate and purify. Phosphorescent characteristics with short emission lifetime were demonstrated for these emitters. Notably, all of the complexes exhibit remarkable deep red/near infrared emission, which is quite different from the reported [−1, −1, −1] charged-ligand based iridium(III) complexes. The photophysical properties of these complexes are regularly improved by introducing electron-donating or -withdrawing groups into [−1] or [0] charged-ligand. The related organic light-emitting diodes exhibited deep red/near infrared emission with acceptable external quantum efficiency and low turn-on voltage (<2.6 V). This work provides a new idea for the construction of new type phosphorescent iridium(III) emitters with different valence states of [−2, −1, 0] charged ligands, thus offering new opportunities and challenges for their optoelectronic applications. 相似文献
209.
Prof. Dr. Ying Zhang Der-Shyang Kao Dr. Bing Gu Dr. Rajdeep Bomjan Dr. Mayank Srivastava Prof. Dr. Haojie Lu Prof. Dr. Daoguo Zhou Prof. Dr. W. Andy Tao 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2020,132(6):2255-2260
Studying the dynamic interaction between host cells and pathogen is vital but remains technically challenging. We describe herein a time-resolved chemical proteomics strategy enabling host and pathogen temporal interaction profiling (HAPTIP) for tracking the entry of a pathogen into the host cell. A novel multifunctional chemical proteomics probe was introduced to label living bacteria followed by in vivo crosslinking of bacteria proteins to their interacting host-cell proteins at different time points initiated by UV for label-free quantitative proteomics analysis. We observed over 400 specific interacting proteins crosslinked with the probe during the formation of Salmonella-containing vacuole (SCV). This novel chemical proteomics approach provides a temporal interaction profile of host and pathogen in high throughput and would facilitate better understanding of the infection process at the molecular level. 相似文献
210.