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831.
832.
Photo-responsive behavior of a monolayer composed of an azobenzene containing polypeptide in the main chain 总被引:1,自引:0,他引:1
A photoresponsive polypeptide, two -helical poly(-methyl L-glutamate)s joined with an azobenzene (MAzoM,Mn=11000), have been prepared. Monolayers of the polypeptide were formed at air-water interface and the photoresponsive behavior of the monolayer obtained was investigated. A trans to cis photo-isomerization of the azobenzene moiety in the main chain of MAzoM induced by UV light irradiation resulted in a bending structure formation in the main chain of the polypeptide via photo-induced changes in the geometry of the azobenzene chromophore. As a result, the limiting area per molecule of the MAzoM monolayer was decreased. Based on the degree of the decrease in the limiting area per molecule, it was estimated that the bending angle between the two -helical rods of MAzoM molecule under UV light irradiation was ca. 140°. The photo-responsive behavior of the MAzoM monolayer was reversible and consisted along with the photo-isomerization of azobenzene moiety. 相似文献
833.
834.
835.
Yasunari Higuchi 《Probability Theory and Related Fields》1993,97(1-2):1-33
Summary We show a strong type of conditionally mixing property for the Gibbs states ofd-dimensional Ising model when the temperature is above the critical one. By using this property, we show that there is always coexistence of infinite (+ *)-and (–*)-clusters when is smaller than c andh=0 in two dimensions. It is also possible to show that this coexistence region extends to some non-zero external field case, i.e., for every < c, there exists someh
c()>0 such that |h|<h
c() implies the coexistence of infinite (*)-clusters with respect to the Gibbs state for (,h).work supported in part by Grant in Aid for Cooperative research no. 03302010, Grant in Aid for Scientific Research no. 03640056 and ISM Cooperative research program (91-ISM,CRP-3)To the memory of Professor Haruo Totoki 相似文献
836.
Yasunari Higuchi 《Probability Theory and Related Fields》1993,97(4):489-514
We show that the percolation transition for the two-dimensional Ising model is sharp. Namely, we show that for every reciprocal temperature >0, there exists a critical valueh
c
() of external magnetic fieldh such that the following two statements hold.
We also shows that the percolation probability is continuous in (,h) except on the half line {(, 0);
c
}. 相似文献
(i) | Ifh>h c (), then the percolation probability (i.e., the probability that the origin is in the infinite cluster of + spins) with respect to the Gibbs state ,h for the parameter (,h) is positive. |
(ii) | Ifhh c (), then the connectivity function ,h + (0,x) (the probability that the origin is connected by + spins tox with respect to ,h ) decays exponentially as |x|. |
837.
Yasuo Tanaka Shohei Saito Shigeki Mori Naoki Aratani Dr. Hiroshi Shinokubo Prof. Dr. Naoki Shibata Prof. Dr. Yoshiki Higuchi Prof. Dr. Zin Seok Yoon Kil Suk Kim Su Bum Noh Jong Kang Park Dongho Kim Prof. Dr. Atsuhiro Osuka Prof. Dr. 《Angewandte Chemie (International ed. in English)》2008,47(4):614-614
838.
839.
Single crystals of dysprosium-doped gadolinium orthovanadate (Dy:GdVO4) were successfully grown by the floating zone method and their fluorescence properties were investigated. The as-grown crystals did not contain any macroscopic defects such as cracks and inclusions for any Dy-concentration of up to 4 at%. Every crystal showed optical homogeneity under observation with a polarizing microscope; that is, no low-angle grain boundaries and growth striations were detected. In the visible region, two distinct fluorescence bands were observed around 480 and 575 nm, corresponding to 4F9/2→6H15/2 and 4F9/2→6H13/2 transitions, respectively. The excitation spectrum for the emission of 573 nm indicates the possibility to use a commercially available laser diode of 450 nm as a pumping source for solid-state yellow laser. 相似文献
840.
Aya?Kaide Takashi?SaekiEmail author Yuichi?Sakanishi Ryota?Nakamura 《Rheologica Acta》2018,57(10):681-690
We synthesized a low-molecular-mass organogelator, cyclohexanecarboxamide (HPMDA-R), which is composed of four amide groups with two kinds of side chains (R and R′). We selected two different alkyl groups, 2-ethylhexyl and oleyl, as side chains, considering the solubility and formation of a self-assembled structure within the solvents. We measured the rheological properties of HPMDA-2C8/oleyl dissolved in paraffin oil and three kinds of ester oils as solvents. The results indicated that the compound contributed to viscoelasticity in both isododecane and 2-ethylhexyl isononanoate, but increased viscosity only in cetyl caprylate. In addition, the compound behaved as a gelator for isostearyl isostearate. We were able to associate differences in function with the morphology of self-assembly observed by TEM. The formation of a gel may have contributed to the presence of the minute network structure. Our measurements for time-dependency supported that notion. 相似文献