Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Junzo Umemura"'
Autor:
Klaus Adlkofer, Tomoyuki Morita, Oleg Konovalov, Shunsaku Kimura, Thomas Kaindl, Motomu Tanaka, Junzo Umemura
Publikováno v:
The Journal of Physical Chemistry C. 114:22677-22683
We propose a strategy to modulate the electronic structure of gallium arsenide (GaAs) semiconductors by the covalent deposition of uniform monolayers of helical peptides. After the optimization of coupling groups and reaction conditions, structures o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5701f905e482a285d7a902d4a7d3a194
https://doi.org/10.1021/jp110133t
https://doi.org/10.1021/jp110133t
Publikováno v:
Applied Spectroscopy. 64:1186-1189
Infrared absorption bands due to water vapor in the mid-infrared regions often obscure important spectral features of the sample. Here, we provide a novel method to collect a qualified infrared spectrum without any water vapor interference. The scann
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f01ffdf6250a65df01a568ae8c14c61
https://doi.org/10.1366/000370210792973587
https://doi.org/10.1366/000370210792973587
Autor:
Junzo Umemura, Hiroshi Sakai
Publikováno v:
Colloid and Polymer Science. 286:1637-1641
In situ polarized infrared external reflection spectra of the Langmuir monolayer of zinc stearate on a water surface were recorded during surface pressure relaxation, and the molecular structure of the monolayer was evaluated. The wavenumber of the a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c17b5616dbc536a6d4309ce6881d18d7
https://doi.org/10.1007/s00396-008-1939-2
https://doi.org/10.1007/s00396-008-1939-2
Publikováno v:
Thin Solid Films. 503:224-229
Surface modification with Disperse Red-1 (DR-1), which is a chromophore for optical second harmonic generation (SHG), was carried out by using cyclic peptides as a scaffold for DR-1. Cyclic dipeptide and cyclic octapeptide having DR-1 at the side cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84e2cea7471a898e6fd9e11343cd72dd
https://doi.org/10.1016/j.tsf.2005.10.067
https://doi.org/10.1016/j.tsf.2005.10.067
Autor:
Sang Rae Park, Junzo Umemura
Publikováno v:
Vibrational Spectroscopy. 38:29-32
Raman spectra of Gibbs monolayers adsorbed from the aqueous solution to the solution–air interface were measured for the first time using resonance Raman technique against a surface-active azo dye, CI Acid Red 138 (AR138). The tautomeric structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1314f256e692f799c6b9d0b8c902991
https://doi.org/10.1016/j.vibspec.2005.02.003
https://doi.org/10.1016/j.vibspec.2005.02.003
Publikováno v:
Journal of Molecular Structure. :63-67
Infrared multiple-angle incidence resolution spectrometry (MAIRS) has been employed to characterize a thin cast film of tripeptide-induced lipid (Leu3) prepared on a germanium substrate. Leu3 molecules are designed to spontaneously interact with each
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::436bc042f74a718581516699ae7f8d56
https://doi.org/10.1016/j.molstruc.2004.10.089
https://doi.org/10.1016/j.molstruc.2004.10.089
Publikováno v:
POLYMER JOURNAL. 37(8):599-607
Photoresponsive helical peptides, which are composed of two helical peptide segments with an intervening azobenzene unit, were synthesized, and the self-assembled monolayers (SAMs) were formed on gold. The helical peptides were shown to take vertical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f7180c8c471fa631c89ff4a3471bf49
http://hdl.handle.net/2433/7513
http://hdl.handle.net/2433/7513
Publikováno v:
The Journal of Physical Chemistry B. 107:11996-12002
A unique monolayer that has a novel film architecture has been constructed by controlling a balance of hydrogen-bonding force and monolayer compression pressure, and the new film architecture has been characterized by infrared multiple-angle incidenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79eb66de6ea393b8eb6308cf7d51b64f
https://doi.org/10.1021/jp035997h
https://doi.org/10.1021/jp035997h
Publikováno v:
Polymer. 43:3533-3540
Boc-( l -Leu-Aib) n -OBzl ( n =8, 12, 16; OBzl represents benzyl ester) was spread on water or a mixture of water and methanol (1/1 v/v) and the orientation of the helical peptides on subphase was investigated by FTIR-reflection–absorption spectros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::464a87e50b540d57fd193920a99b71a8
https://doi.org/10.1016/s0032-3861(02)00044-7
https://doi.org/10.1016/s0032-3861(02)00044-7
Autor:
Hiroshi Sakai, Junzo Umemura
Publikováno v:
Colloid & Polymer Science. 280:316-321
In situ polarized Fourier transform IR external reflection spectra of Langmuir monolayers of zinc stearate and zinc 12-hydroxystearate on a water surface were recorded for various surface areas, and their molecular structures were estimated. In the z
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a33004f249fec57f2f82d5e7c431f461
https://doi.org/10.1007/s003960100581
https://doi.org/10.1007/s003960100581