All issues
Predecessor
Volume 74, Issue 7
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
Jun KURAKI, Mitsunobu IWASAKI, Hiroaki TADA, Seishiro ITO2001 Volume 74 Issue 7 Pages 332-338
Published: July 20, 2001
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSThick anodized titanium plates with high photocatalytic activity were prepared by 2-step anodization method : first anodization in the bath (H3PO4-H2SO4-H2O2) containing SnO2 and/or TiO2 particles; reanodization in the mixture of NH4HF2 and H2O2. The apparent rate constant (k), which was evaluated by the photooxidation decomposition of CH3CHO gas, was drastically improved by the addition of SnO2 and/or TiO2 particles. The high k value was mainly induced by the three things : (1) TiO2 particles loaded on the film surface; (2) crystal growth of anatase because of a significant change in electrolytic behaviour; (3) acceleration of charge career separation owing to the transfer of a part of photogenerated electrons from TiO2 to SnO2 particles in the films.View full abstractDownload PDF (1351K) -
Yukinori NAGAO, Masashi TACHIKAWA, Kozo KOZAWA2001 Volume 74 Issue 7 Pages 339-345
Published: July 20, 2001
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDiphenylaminophthalide derivatives were synthesized and their properties as color formers were investigated. Condensation of benzoyl benzoic acids and diphenylamines in acetic anhydride and pyridine afforded the diphenylaminophthalide derivatives having substituents of 4-R2 and 4-R3 in diphenylamino moiety and of 2-X in 3-phenyl moiety.
The diphenylaminophthalides were colored red to reddish violet in acidic solvent. The visible absorption spectra were measured for the investigation of the substituent effect. R2 and R3 substituents gave a bathochromic shift of the λmax in the order of diethylamino>>dimethylamono>>methoxy>>H. X substituent provided a hypsochromic shift of λmax in the order of ethoxy>>hydroxy>>methyl. Therefore the bathochromic shift increased with incresing electron donating ability of R2 and R3 substituents, and the hypsochromic shift increased with incresing electron-donating ability of X substituent. PPP-MO calculation also gave a reasonable explanation for the substituent effect.View full abstractDownload PDF (909K) -
Masatsugu MURASE, Chiaki KATOH2001 Volume 74 Issue 7 Pages 346-349
Published: July 20, 2001
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESS -
Katsuhiko FUKUSHIMA2001 Volume 74 Issue 7 Pages 350-353
Published: July 20, 2001
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (701K) -
Takahiro GUNJI, Yoshimoto ABE2001 Volume 74 Issue 7 Pages 354-359
Published: July 20, 2001
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1260K) -
Yoshinori HOSHINO2001 Volume 74 Issue 7 Pages 360-365
Published: July 20, 2001
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1908K) -
Shinya OKABE2001 Volume 74 Issue 7 Pages 366-371
Published: July 20, 2001
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1216K)
- |<
- <
- 1
- >
- >|