Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Takayuki Kajikawa"'
Publikováno v:
Physical Chemistry Chemical Physics. 19:3000-3009
Carotenoids possessing a carbonyl group along their polyene backbone exhibit unique excited state properties due to the occurrence of intramolecular charge transfer (ICT) in the excited state. In fact, the ICT characteristics of naturally occurring c
Autor:
Takayuki Kajikawa, Satoshi Okumura, Daisuke Kosumi, Shigeo Katsumura, Hideki Hashimoto, Koki Yano, Kazuhiko Sakaguchi, Mitsuru Sugisaki
Publikováno v:
Chemical Physics Letters. 602:75-79
Ultrafast excited state dynamics of the short fucoxanthin homolog with four conjugated double bonds and its allene-modified analog in various solvents have been studied by femtosecond pump-probe spectroscopy. The results clarified that the short fuco
Autor:
Hideki Hashimoto, Satoshi Okumura, Daisuke Kosumi, Kazuhiko Sakaguchi, Mitsuru Sugisaki, Shigeo Katsumura, Takayuki Kajikawa
Publikováno v:
The Journal of Physical Chemistry Letters. 5:792-797
Fucoxanthin is an essential pigment for the highly efficient light-harvesting function of marine algal photosynthesis. It exhibits excited state properties attributed to intramolecular charge transfer (ICT) in polar environments due to the presence o
Autor:
Hongbin Liu, Nikki Cecil M. Magdaong, Kazuhiko Sakaguchi, Harry A. Frank, Takayuki Kajikawa, Koki Yano, Jordan A. Greco, Shigeo Katsumura, Robert R. Birge, Dariusz M. Niedzwiedzki
Publikováno v:
Chemical Physics Letters. 593:132-139
C 29 -peridinin is a synthetic analogue of the important, naturally-occurring carotenoid, peridinin, found in several marine algal species. C 29 -peridinin has five conjugated carbon–carbon double bonds compared to eight possessed by peridinin and
Autor:
Kazuhiko Sakaguchi, Satoshi Okumura, Daisuke Kosumi, Koki Yano, Hideki Hashimoto, Shigeo Katsumura, Takayuki Kajikawa
Publikováno v:
Tetrahedron Letters. 55:407-410
Fucoxanthin is an essential pigment for the light-harvesting of aquatic algae. It exhibits high energy transfer efficiencies to Chl a (>80%) as well as peridinin (>95%). In order to verify the generality and specificity of the noticeable observation
Publikováno v:
The Journal of Physical Chemistry B. 117:6874-6887
The lifetime of the lowest excited singlet state of carbonyl-containing carotenoids typically depends on the polarity of the solvent, an effect that has been attributed to the presence of an intramolecular charge transfer (ICT) state. The nature of t
Autor:
Robert R. Birge, Miriam M. Enriquez, Harry A. Frank, Shohei Hananoki, Takayuki Kajikawa, Nicole L. Wagner, Shinji Hasegawa, Shigeo Katsumura
Publikováno v:
The Journal of Physical Chemistry B. 116:10748-10756
The spectroscopic properties and dynamics of the excited states of two different synthetic analogues of peridinin were investigated as a function of solvent polarity using steady-state absorption, fluorescence, and ultrafast time-resolved optical spe
Autor:
Takayuki Kajikawa, Dariusz M. Niedzwiedzki, Marcel Fuciman, Kazuyoshi Aoki, Harry A. Frank, Miriam M. Enriquez, Shanti Kaligotla, Shigeo Katsumura
Publikováno v:
The Journal of Physical Chemistry B. 115:4436-4445
The peridinin-chlorophyll a-protein (PCP) is a light-harvesting pigment-protein complex found in many species of marine algae. It contains the highly substituted carotenoid peridinin and chlorophyll a, which together facilitate the transfer of absorb
Autor:
Takayuki KAJIKAWA, Shigeo KATSUMURA
Publikováno v:
KAGAKU TO SEIBUTSU. 49:281-286
Autor:
Hideki Hashimoto, Shigeo Katsumura, Harry A. Frank, Toshiyuki Kusumoto, Richard J. Cogdell, Tomoko Horibe, Robert R. Birge, Takashi Iwashita, Takayuki Kajikawa, Shinji Hasegawa
Publikováno v:
Chemical Physics. 373:71-79
Stark absorption spectra of peridinin (Per) and five allene-modified analogues and their angular dependence as a function of an externally applied electric field were measured in methyl methacrylate polymer at 77K. In all cases, the energetically low