小澄大輔

J-GLOBALへ         更新日: 18/11/07 17:36
 
アバター
研究者氏名
小澄大輔
 
コスミ ダイスケ
eメール
kosumikumamoto-u.ac.jp
URL
https://kaken.nii.ac.jp/d/r/70613149.ja.html
所属
熊本大学
部署
パルスパワー科学研究所
職名
准教授
学位
博士(理学)(東北大学)
科研費研究者番号
70613149
ORCID ID
0000-0001-9339-7913

研究分野

 
 

経歴

 
2011年4月
 - 
2015年3月
大阪市立大学 複合先端研究機構 特任准教授
 
2008年4月
 - 
2011年3月
大阪市立大学 理学研究科・数物系専攻 日本学術振興会特別研究員 PD
 
2007年4月
 - 
2008年3月
東北大学 理学研究科・物理学専攻 日本学術振興会特別研究員 PD
 

論文

 
Ryohei Akiyoshi, Yuma Hirota, Daisuke Kosumi, Ryo Ohtani, Masaaki Nakamura, Leonard F. Lindoy, Shinya Hayami
Dalton Transactions      2018年   [査読有り]
Daisuke Kosumi, Takayuki Kajikawa, Kazuhiko Sakaguchi, Shigeo Katsumura, Hideki Hashimoto
Physical Chemistry Chemical Physics   19(4) 3000   2017年   [査読有り]
Yukihira Nao, Sugai Yuko, Fujiwara Masazumi, Kosumi Daisuke, Iha Masahiko, Sakaguchi Kazuhiko, Katsumura Shigeo, Gardiner Alastair T, Cogdell Richard J, Hashimoto Hideki
Faraday Discussions      2017年   [査読有り]
Kosumi D, Kajikawa T, Sakaguchi K, Katsumura S, Hashimoto H.
Phys Chem Chem Phys   19(4) 3000-3009   2017年   [査読有り]
Kosumi D, Kajikawa T, Yano K, Okumura S, Sugisaki M, Sakaguchi K, Katsumura S, Hashimoto H.
Optics InfoBase Conference Papers      2014年   [査読有り]
Kosumi D, Maruta S, Fujii R, Sugisaki M, Takaichi S, Cogdell R.J, Hashimoto H.
Optics InfoBase Conference Papers      2014年   [査読有り]
Kanemoto K, Fukunaga A, Yasui M, Kosumi D, Hashimoto H, Tamekuni H, Kawahara Y, Takemoto Y, Takeuchi J, Miura Y, Teki Y.
Rsc Advances   2(12) 5150-5153   2012年   [査読有り]
Kosumi Daisuke, Maruta Satoshi, Horibe Tomoko, Fujii Ritsuko, Sugisaki Mitsuru, Cogdell Richard J, Hashimoto Hideki
Angewandte Chemie-International Edition   50(5) 1097-1100   2011年   [査読有り]
Kanemoto K, Yasui M, Higuchi T, Kosumi D, Akai I, Karasawa T, Hashimoto H.
Physical Review B   83(20)    2011年   [査読有り]
Sugisaki M, Kosumi D, Saito K, Fujii R, Cogdell R.J, Hashimoto H.
Optics InfoBase Conference Papers      2010年   [査読有り]
Kosumi D, Maruta S, Kusumoto T, Fujii R, Sugisaki M, Iha M, Frank H.A, Hashimoto H.
Optics InfoBase Conference Papers      2010年   [査読有り]
Kosumi D, Fujiwara M, Hashimoto H, Yoshizawa M.
Journal of the Physical Society of Japan   78(10) 104715/1-5   2009年   [査読有り]
Kanemoto K, Yasui M, Kosumi D, Ogata A, Sugisaki M, Karasawa T, Akai I, Hashimoto H.
Physical Review Letters   103(18)    2009年   [査読有り]
Yoshizawa M, Kosumi D, Komukai M, Yanagi K, Hashimoto H.
Optics InfoBase Conference Papers      2006年   [査読有り]
Kosumi D, Yanagi K, Fujii R, Hashimoto H, Yoshizawa M.
Chemical Physics Letters   425(1-3) 66-70   2006年   [査読有り]
Kosumi D, Yanagi K, Nishio T, Hashimoto H, Yoshizawa M.
Chemical Physics Letters   408(1-3) 89-95   2005年   [査読有り]
Yoshizawa M, Kosumi D, Komukai M, Yanagi K, Hashimoto H.
Springer Series in Chemical Physics   79 589-591   2004年   [査読有り]

Misc

 
Daisuke Kosumi, Daisuke Kosumi, Tomoko Horibe, Mitsuru Sugisaki, Richard J. Cogdell, Hideki Hashimoto
Journal of Physical Chemistry B   120 951-956   2016年2月
© 2016 American Chemical Society. Photosynthetic light-harvesting apparatus efficiently capture sunlight and transfer the energy to reaction centers, while they safely dissipate excess energy to surrounding environments for a protection of their o...
Yuichi Kitagawa, Yuichi Kitagawa, Shin Ogasawara, Daisuke Kosumi, Hideki Hashimoto, Hitoshi Tamiaki
Journal of Photochemistry and Photobiology A: Chemistry   311 104-111   2015年7月
© 2015 Elsevier B.V. All rights reserved. The electron transport system along the Qy axis of the chlorophyll derivatives has attracted considerable attention. Recently, we achieved the first photochemical CO<inf>2</inf> reduction using very low en...
Daisuke Kosumi, Daisuke Kosumi, Tomoya Nishiguchi, Mitsuru Sugisaki, Hideki Hashimoto, Hideki Hashimoto, Hideki Hashimoto
Journal of Photochemistry and Photobiology A: Chemistry   313 72-78   2015年3月
© 2015 Elsevier B.V. All rights reserved. Vibrational dynamics of the photosynthetic pigment chlorophyll a in solution have been investigated by degenerated three-pulse four-wave mixing spectroscopies (transient grating and photon echo) using 20 f...
Yuichi Kitagawa, Yuichi Kitagawa, Shin Ogasawara, Daisuke Kosumi, Hideki Hashimoto, Hitoshi Tamiaki
Bulletin of the Chemical Society of Japan   88 346-351   2015年1月
© 2015 The Chemical Society of Japan. Since photochemical CO2 reduction using long wavelength regions of sunlight is important, we have reported the first photochemical CO2 reduction with red visible light (>650 nm) by using a synthetic chlorophyl...
Noriyuki Tonouchi, Daisuke Kosumi, Mitsuru Sugisaki, Mamoru Nango, Hideki Hashimoto, Hideki Hashimoto
Photosynthesis Research   124 77-86   2015年1月
© 2015 Springer Science+Business Media Dordrecht. Absorption and Raman spectra of spheroidene dissolved in various organic solvents and bound to peripheral light-harvesting LH2 complexes from photosynthetic purple bacteria Rhodobacter (Rba.) sphae...
D. Kosumi, S. Maruta, R. Fujii, R. Fujii, M. Sugisaki, S. Takaichi, R. J. Cogdell, H. Hashimoto, H. Hashimoto
Springer Proceedings in Physics   162 572-575   2015年1月
© Springer International Publishing Switzerland 2015.Ultrafast energy transfer dynamics in photosynthetic antennas were investigated by femtosecond pump-probe measurements. Photo-excited carotenoids with short-polyene chains efficiently transfer e...
D. Kosumi, T. Kajikawa, K. Yano, S. Okumura, M. Sugisaki, K. Sakaguchi, S. Katsumura, H. Hashimoto, H. Hashimoto
Springer Proceedings in Physics   162 576-579   2015年1月
© Springer International Publishing Switzerland 2015.Ultrafast Intramolecular Charge Transfer (ICT) state dynamics of fucoxanthin have been investigated by femtosecond pump-probe measurements. A modification of conjugated polyene chain length of f...
Ayumu Karimata, Shuichi Suzuki, Masatoshi Kozaki, Kenshi Kimoto, Koichi Nozaki, Hironori Matsushita, Noriaki Ikeda, Kimio Akiyama, Daisuke Kosumi, Hideki Hashimoto, Keiji Okada
Journal of Physical Chemistry A   118 11262-11271   2014年11月
© 2014 American Chemical Society. Photoinduced intramolecular electron transfer of dyad PTZ3-PTZ2-PTZ1-B-AQ consisting of phenothiazine trimer (PTZ3-PTZ2-PTZ1), bicyclo[2.2.2]octane (B ), and anthraquinone (AQ) was investigated. After excitation (...
Akitaka Ito, Akihiro Shimizu, Noriaki Kishida, Yusuke Kawanaka, Daisuke Kosumi, Hideki Hashimoto, Hideki Hashimoto, Yoshio Teki
Angewandte Chemie - International Edition   53 6715-6719   2014年6月
The excited-state dynamics of pentacene derivatives with stable radical substituents were evaluated in detail through transient absorption measurements. The derivatives showed ultrafast formation of triplet excited state(s) in the pentacene moiety...
Daisuke Kosumi, Takayuki Kajikawa, Koki Yano, Satoshi Okumura, Mitsuru Sugisaki, Kazuhiko Sakaguchi, Shigeo Katsumura, Hideki Hashimoto, Hideki Hashimoto
Chemical Physics Letters   602 75-79   2014年5月
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 f...
Daisuke Kosumi, Takayuki Kajikawa, Satoshi Okumura, Mitsuru Sugisaki, Kazuhiko Sakaguchi, Shigeo Katsumura, Hideki Hashimoto, Hideki Hashimoto
Journal of Physical Chemistry Letters   5 792-797   2014年3月
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 presenc...
Satoshi Okumura, Takayuki Kajikawa, Koki Yano, Kazuhiko Sakaguchi, Daisuke Kosumi, Hideki Hashimoto, Shigeo Katsumura, Shigeo Katsumura
Tetrahedron Letters   55 407-410   2014年1月
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 observati...
Yuichi Kitagawa, Hiroyuki Takeda, Kenji Ohashi, Tsuyoshi Asatani, Daisuke Kosumi, Hideki Hashimoto, Osamu Ishitani, Hitoshi Tamiaki
Chemistry Letters   43 1383-1385   2014年1月
© 2014 The Chemical Society of Japan. We successfully performed the reduction of CO2to CO by selective illumination of red visible light to a chlorophyll derivative covalently linked with a rhenium bipyridine complex. This is the first example of ...
D. Kosumi, T. Kajikawa, K. Yano, S. Okumura, M. Sugisaki, K. Sakaguchi, S. Katsumura, H. Hashimoto, H. Hashimoto
Optics InfoBase Conference Papers      2014年1月
Ultrafast Intramolecular Charge Transfer (ICT) state dynamics of fucoxanthin have been investigated by femtosecond pump-probe measurements. A modification of conjugated polyene chain length of fucoxanthin enabled us to clarify and control an ICT c...
Daisuke Kosumi, Ritsuko Fujii, Ritsuko Fujii, Mitsuru Sugisaki, Naohiro Oka, Masahiko Iha, Hideki Hashimoto, Hideki Hashimoto
Photosynthesis Research   121 61-68   2014年1月
Fucoxanthin, containing a carbonyl group in conjugation with its polyene backbone, is a naturally occurring pigment in marine organisms and is essential to the photosynthetic light-harvesting function in brown alga and diatom. Fucoxanthin exhibits...
D. Kosumi, S. Maruta, R. Fujii, R. Fujii, M. Sugisaki, S. Takaichi, R. J. Cogdell, H. Hashimoto, H. Hashimoto
Optics InfoBase Conference Papers      2014年1月
Ultrafast energy transfer dynamics in photosynthetic antennas were investigated by femtosecond pump-probe measurements. Photo-excited carotenoids with short-polyene chains efficiently transfer energy to bacteriochlorophylls, while the energy rapid...
Daisuke Kosumi, Daisuke Kosumi, Katsunori Nakagawa, Shunsuke Sakai, Yuya Nagaoka, Yuya Nagaoka, Satoshi Maruta, Satoshi Maruta, Mitsuru Sugisaki, Mitsuru Sugisaki, Takehisa Dewa, Takehisa Dewa, Mamoru Nango, Mamoru Nango, Mamoru Nango, Hideki Hashimoto, Hideki Hashimoto, Hideki Hashimoto
Journal of Chemical Physics   139    2013年11月
Ultrafast excited-state dynamics of the photosynthetic pigment (Mg-)bacteriochlorophyll a and its Zn-substituted form were investigated by steady-state absorption/fluorescence and femtosecond pump-probe spectroscopic measurements. The obtained ste...
D. Kosumi, D. Kosumi, M. Kita, M. Kita, R. Fujii, R. Fujii, M. Sugisaki, M. Sugisaki, N. Oka, Y. Takaesu, T. Taira, M. Iha, H. Hashimoto, H. Hashimoto, H. Hashimoto
Journal of Physical Chemistry Letters   3 2659-2664   2012年9月
Fucoxanthin-chlorophyll-a/c protein (FCP) complexes from brown algae Cladosiphon okamuranus TOKIDA (Okinawa Mozuku in Japanese) contain the only species of carbonyl carotenoid, fucoxanthin, which exhibits spectral characteristics attributed to an ...
Daisuke Kosumi, Daisuke Kosumi, Satoshi Maruta, Satoshi Maruta, Tomoko Horibe, Tomoko Horibe, Yuya Nagaoka, Yuya Nagaoka, Ritsuko Fujii, Ritsuko Fujii, Mitsuru Sugisaki, Mitsuru Sugisaki, Mitsuru Sugisaki, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto, Hideki Hashimoto
Journal of Chemical Physics   137    2012年8月
Ultrafast excited state dynamics of spirilloxanthin in solution and bound to the light-harvesting core antenna complexes from Rhodospirillum rubrum S1 were investigated by means of femtosecond pump-probe spectroscopic measurements. The previously ...
Katsuichi Kanemoto, Atsushi Fukunaga, Motoaki Yasui, Daisuke Kosumi, Hideki Hashimoto, Hirotaka Tamekuni, Yuichi Kawahara, Yohei Takemoto, Jun Takeuchi, Yozo Miura, Yoshio Teki
RSC Advances   2 5150-5153   2012年6月
Ultrafast photoexcitation dynamics of the bodipy-anthracene-radical triad of the photoexcited quartet state and its control compounds were investigated by fs-laser spectroscopy. The fs-spectroscopy successfully unveiled complicated dynamical proce...
Mitsuru Sugisaki, Mitsuru Sugisaki, Mitsuru Sugisaki, Daisuke Kosumi, Daisuke Kosumi, Keisuke Saito, Keisuke Saito, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto, Hideki Hashimoto
Physical Review B - Condensed Matter and Materials Physics   85    2012年6月
Coherent vibronic oscillations in the ground state of carotenoids have been investigated by means of three-pulse four-wave mixing spectroscopy. Here, we especially focused our attention on the influence of the temporal separation between the first...
Takayuki Kajikawa, Satoshi Okumura, Takashi Iwashita, Daisuke Kosumi, Hideki Hashimoto, Shigeo Katsumura
Organic Letters   14 808-811   2012年2月
Fucoxanthin exhibits high energy transfer efficiencies to Chlorophyll a (Chl a) in photosynthesis in the sea. In order to reveal how each characteristic functional group, such as the length of the polyene chain, allene, and conjugated carbonyl gro...
S. Maruta, D. Kosumi, T. Horibe, R. Fujii, M. Sugisaki, M. Sugisaki, R. J. Cogdell, H. Hashimoto, H. Hashimoto
Physics Procedia   13 58-61   2011年6月
Ultrafast excited state dynamics of carotenoids in solution and bound to pigment-protein complexes have been investigated by means of femtosecond pump-probe spectroscopic measurements. Ultrafast triplet formation of carotenoids bound to pigmentpro...
Mitsuru Sugisaki, Daisuke Kosumi, Keisuke Saito, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto
Physics Procedia   13 74-77   2011年6月
The four-wave mixing signals from spheroidene have been systematically investigated at various coherent periods r. The pronounced vibronic oscillations of the fundamental modes in the ground state are clearly observed in the transient grating conf...
Daisuke Kosumi, Daisuke Kosumi, Toshiyuki Kusumoto, Toshiyuki Kusumoto, Ritsuko Fujii, Ritsuko Fujii, Mitsuru Sugisaki, Mitsuru Sugisaki, Mitsuru Sugisaki, Yoshiro Iinuma, Naohiro Oka, Yuki Takaesu, Tomonori Taira, Masahiko Iha, Harry A. Frank, Hideki Hashimoto, Hideki Hashimoto, Hideki Hashimoto
Physical Chemistry Chemical Physics   13 10762-10770   2011年6月
Carotenoids containing a carbonyl group in conjugation with their polyene backbone are naturally-occurring pigments in marine organisms and are essential to the photosynthetic light-harvesting function in aquatic algae. These carotenoids exhibit s...
Katsuichi Kanemoto, Motoaki Yasui, Tatsuya Higuchi, Daisuke Kosumi, Ichiro Akai, Tsutomu Karasawa, Hideki Hashimoto, Hideki Hashimoto
Physical Review B - Condensed Matter and Materials Physics   83    2011年5月
Excitons, photocarriers, and bias-induced carriers in regioregular poly(3-alkylthiophene) (P3AT) films were investigated using a variety of spectroscopic techniques, such as continuous-wave- (cw-) and femtosecond (fs-) transient photoinduced absor...
Toshiyuki Kusumoto, Daisuke Kosumi, Chiasa Uragami, Harry A. Frank, Robert R. Birge, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto
Journal of Physical Chemistry A   115 2110-2119   2011年3月
The photophysical properties of a carbonyl-containing carotenoid analogue in an s-cis configuration, relative to the conjugated π system, 2-(all-trans-retinylidene)-indan-1,3-dione (C20Ind), were investigated by femtosecond time-resolved spectrosc...
Daisuke Kosumi, Toshiyuki Kusumoto, Ritsuko Fujii, Ritsuko Fujii, Mitsuru Sugisaki, Mitsuru Sugisaki, Yoshiro Iinuma, Naohiro Oka, Yuki Takaesu, Tomonori Taira, Masahiko Iha, Harry A. Frank, Hideki Hashimoto, Hideki Hashimoto
Journal of Luminescence   131 515-518   2011年3月
Ultrafast relaxation kinetics of fucoxanthin in polar and non-polar solvents have been studied by femtosecond pump-probe spectroscopy. Transient absorption associated with S1 or intramolecular charge transfer (ICT) excited state has been observed ...
Daisuke Kosumi, Satoshi Maruta, Tomoko Horibe, Ritsuko Fujii, Mitsuru Sugisaki, Richard J. Cogdell, Hideki Hashimoto
Angewandte Chemie - International Edition   50 1097-1100   2011年2月
Reaping a good light harvest: Femtosecond spectroscopy uncovered a novel pathway of singlet-singlet excitation-energy transfer (EET) from bacteriochlorophyll (Bchl) in a purple bacterium to the carotenoid spirilloxanthin (Spx) upon the excitation ...
Satoshi Maruta, Daisuke Kosumi, Tomoko Horibe, Ritsuko Fujii, Ritsuko Fujii, Mitsuru Sugisaki, Mitsuru Sugisaki, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto
Physica Status Solidi (B) Basic Research   248 403-407   2011年2月
Ultrafast excited state dynamics of carotenoids in solution and bound to pigment-protein complexes have been investigated by femtosecond pump-probe spectroscopic measurements. Possible excitation energy transfer (EET) pathways between carotenoids ...
Daisuke Kosumi, Daisuke Kosumi, Satoshi Maruta, Satoshi Maruta, Ritsuko Fujii, Ritsuko Fujii, Katsuichi Kanemoto, Katsuichi Kanemoto, Mitsuru Sugisaki, Mitsuru Sugisaki, Mitsuru Sugisaki, Hideki Hashimoto, Hideki Hashimoto, Hideki Hashimoto
Physica Status Solidi (C) Current Topics in Solid State Physics   8 92-95   2011年1月
Ultrafast excited state dynamics of the photosynthetic pigment bacteriochlorophyll a in solution have been investigated by means of steady-state and time-resolved spectroscopic techniques. Photo-induced absorption spectra were observed upon excita...
Katsuichi Kanemoto, Katsuichi Kanemoto, Motoaki Yasui, Daisuke Kosumi, Daisuke Kosumi, Mitsuru Sugisaki, Mitsuru Sugisaki, Tsutomu Karasawa, Hideki Hashimoto, Hideki Hashimoto, Hideki Hashimoto
Physica Status Solidi (C) Current Topics in Solid State Physics   8 88-91   2011年1月
The photophysics of the regioregular (RR) poly(3-alkylthiophene) (P3AT) films is investigated by cw-photoinduced absorption (PIA) measurements based on bleaching signals. The photoexcitation intensity dependence of the cw-PIA signals demonstrates ...
Mitsuru Sugisaki, Mitsuru Sugisaki, Daisuke Kosumi, Keisuke Saito, Keisuke Saito, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto
Physica Status Solidi (C) Current Topics in Solid State Physics   8 151-154   2011年1月
The nonlinear optical responses of carotenoids can be investigated by means of the four-wave mixing (FWM) spectroscopy. Here we especially focus on the relationship among the pulse sequences, temporal separations between the pulses and the resulti...
Mitsuru Sugisaki, Daisuke Kosumi, Keisuke Saito, Ritsuko Fujii, Richard J. Cogdell, Hideki Hashimoto
Optics InfoBase Conference Papers      2010年12月
Vibronic coherent oscillations of carotenoids have been investigated under various excitation conditions. It was found that coupled modes can be excited in the stimulated photon-echo configuration. A model that explains the results is discussed. ©...
D. Kosumi, S. Maruta, T. Kusumoto, R. Fujii, M. Sugisaki, M. Iha, H. A. Frank, H. Hashimoto
Optics InfoBase Conference Papers      2010年12月
The ultrafast excited state dynamics of fucoxanthin in a polar solvent have been investigated by femtosecond one- and two-photon pump-probe spectroscopic measurements. Transient absorption spectra and their kinetics depend strongly on excitation e...
Daisuke Kosumi, Kenta Abe, Hiroshi Karasawa, Masazumi Fujiwara, Masazumi Fujiwara, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto, Masayuki Yoshizawa, Masayuki Yoshizawa
Chemical Physics   373 33-37   2010年7月
Femtosecond one- and two-photon pump-probe dispersive spectroscopic measurements have been applied to the investigation of the vibrational relaxation kinetics of the dark S1 (21Ag-) state in β-carotene, combining a higher sensitive detection syste...
Mitsuru Sugisaki, Masazumi Fujiwara, Daisuke Kosumi, Ritsuko Fujii, Mamoru Nango, Mamoru Nango, Richard J. Cogdell, Hideki Hashimoto
Physical Review B - Condensed Matter and Materials Physics   81    2010年6月
The concurrent dynamics of the electronic excitation and vibronic oscillations of spheroidene have been investigated by means of the transient grating (TG) spectroscopy. The third-order optical responses of spheroidene in an organic solvent, in th...
杉崎 満, 小澄 大輔, 橋本 秀樹
光化学 = Photochemistry   41(1) 28-34   2010年4月
Daisuke Kosumi, Toshiyuki Kusumoto, Ritsuko Fujii, Mitsuru Sugisaki, Yoshiro Iinuma, Naohiro Oka, Yuki Takaesu, Tomonori Taira, Masahiko Iha, Harry A. Frank, Hideki Hashimoto
Chemical Physics Letters   483 95-100   2009年12月
The ultrafast relaxation kinetics of fucoxanthin in polar and non-polar solvents have been studied by femtosecond dispersed one- and two-photon pump-probe spectroscopies. Transient absorption kinetics of the lowest singlet S1 (21Ag -) state and/or...
Katsuichi Kanemoto, Motoaki Yasui, Daisuke Kosumi, Akihiko Ogata, Mitsuru Sugisaki, Tsutomu Karasawa, Ichiro Akai, Hideki Hashimoto
Physical Review Letters   103    2009年10月
Bleaching probe spectroscopy performed for regioregular poly(3-hexylthiophene) diodes reveals that coexistent morphological phases determine the conducting and optical properties of conjugated polymer films. Photoinduced absorption measurements de...
Daisuke Kosumi, Masazumi Fujiwara, Masazumi Fujiwara, Ritsuko Fujii, Ritsuko Fujii, Richard J. Cogdell, Hideki Hashimoto, Hideki Hashimoto, Masayuki Yoshizawa, Masayuki Yoshizawa
Journal of Chemical Physics   130    2009年6月
The ultrafast relaxation kinetics of all-trans- β -carotene homologs with varying numbers of conjugated double bonds n (n=7-15) and lycopene (n=11) has been investigated using femtosecond time-resolved absorption and Kerr-gate fluorescence spectro...
Kenta Abe, Daisuke Kosumi, Kazuhiro Yanagi, Kazuhiro Yanagi, Yasumitsu Miyata, Yasumitsu Miyata, Hiromichi Kataura, Hiromichi Kataura, Masayuki Yoshizawa, Masayuki Yoshizawa
Physical Review B - Condensed Matter and Materials Physics   77    2008年4月
Single-walled carbon nanotubes (SWCNTs) encapsulating β -carotene are attractive components for enhancing optical functionalities of SWCNTs. We have investigated ultrafast dynamics of light-harvesting function of β -carotene. The relaxation kineti...
Daisuke Kosumi, Kazuhiro Yanagi, Ritsuko Fujii, Hideki Hashimoto, Masayuki Yoshizawa
Chemical Physics Letters   425 66-70   2006年7月
Ultrafast dynamics of the optically allowed S2 (1 1 Bu +) state in all-trans-carotenoids with a number of conjugated double bonds, n = 7-15, has been investigated by femtosecond Kerr-gate fluorescence spectroscopy. The lifetime of the S2 state is ...
M. Yoshizawa, D. Kosumi, M. Komukai, H. Hashimoto
Laser Physics   16 325-330   2006年2月
Ultrafast optical phenomena in all-trans-β-carotene have been investigated by femtosecond absorption and fluorescence spectroscopy. Following a resonant pump pulse, both fluorescence and absorbance changes have a decay time of 150 fs. The signals ...
M. Yoshizawa, D. Kosumi, M. Komukai, K. Yanagi, K. Yanagi, H. Hashimoto, H. Hashimoto
Optics InfoBase Conference Papers      2006年1月
Carotenoids with several conjugation lengths have been investigated. Time-resolved absorbance change and fluorescence are explained by relaxation of excited states and nonlinear optical effects. A role of intermediate states between S2 and S1 is d...
D. Kosumi, M. Komukai, K. Yanagi, H. Hashimoto, M. Yoshizawa
IQEC, International Quantum Electronics Conference Proceedings   2005 710-711   2005年12月
Responses to femtosecond tunable excitation pulses have been investigated in carotenoids. Relaxation kinetics depends on excess vibrational energy given by photoexcitation. Nonlinear responses to non-resonant excitation is interpreted by resonance...
D. Kosumi, M. Komukai, H. Hashimoto, M. Yoshizawa
Physical Review Letters   95    2005年11月
Excitation energy dependence of transmittance change has been investigated in β-carotene. The signal induced by nonresonant excitation is ascribed to the ac Stark effect and the two-photon absorption of the excitation and probe pulses in three-lev...
Daisuke Kosumi, Kazuhiro Yanagi, Tomohiro Nishio, Hideki Hashimoto, Masayuki Yoshizawa
Chemical Physics Letters   408 89-95   2005年6月
Ultrafast relaxation kinetics in β-carotene and lycopene has been investigated by femtosecond absorption and fluorescence spectroscopies using tunable excitation pulses. The transient signals induced by the photoexcitation with larger excess energ...
M. Yoshizawa, D. Kosumi, M. Komukai, K. Yanagi, H. Hashimoto
Springer Series in Chemical Physics   79 589-591   2004年12月
Ultrafast optical responses in β -carotene and lycopene depend on the pump wavelength. Excess vibrational energy induced by the photoexcitation remains longer than several picoseconds in the excited states and slows down the relaxation kinetics.

講演・口頭発表等

 
分光手法によるカロテノイドの機能解明 [招待有り]
小澄大輔
ifia Japan 2018 カロテノイドフォーラム   2018年5月17日   
ナノイオンキャリアに担持させたフェオフォーバイドaにおける蛍光寿命の分子密度依存性
内村祐貴、西本徹、垰本真有華、伊藤亮孝、小澄大輔
第28回光物性研究会   2017年12月9日   
シアノバクテリア由来光合成超複合体におけるエネルギー伝達過程
廣田悠真、藤本将吾、川上恵典、神谷信夫、小澄大輔
第28回光物性研究会   2017年12月9日   
超高速分光手法による光合成エネルギー伝達機構の解明 [招待有り]
小澄大輔
2017年日本動物学会・九州沖縄植物学会・日本生態学会 合同熊本例会   2017年11月25日   
波長可変パルスレーザーを用いた時間相関単一光子計数法によるクロロフィルaの蛍光寿命測定
藤本将吾、芳野修平、小澄大輔
光合成セミナー2017   2017年7月15日   
RECONSTITUTION OF THE LIGHT-HARVESTING 1 COMPLEX FROM A PURPLE PHOTOSYNTHETIC BACTERIUM RHODOSPIRILLUM RUBRUM G9+ WITH FUCOXANTHIN
小澄大輔
ICARP2017   2017年3月1日   
TRIPLET EXCITED STATE DYNAMICS OF CHLOROPHYLL A AS REVEALED BY SUB-NS PUMP-PROBE SPECTROSCOPY
小澄大輔
ICARP2017   2017年3月1日   
EXCITATION ENERGY TRANSFER AND DISSIPATION DYNAMICS IN PHOTOSYNTHETIC ANTENNA SYSTEMS [招待有り]
ICARP2017   2017年3月1日   
Tactics to enhance the excitation energy-transfer efficiency in the light-harvesting system using the intra-molecular charge transfer character of carotenoids
小澄大輔
Artificial Photosynthesis: Faraday Discussions   2017年2月24日   
Energy-transfer efficiency fucoxanthin reconstituted into the light-harvesting 1 from a purple photosynthetic bacterium Rhodospirillum rubrum G9+
小澄大輔
The 23th International SPACC Symposium   2016年11月21日   
誘起ラジカルを利用した高い光耐久性を有する新規ペンタセンの創生と機構及びそのスピン物性
清水章晧、伊藤亮孝、小澄大輔、橋本秀樹、手木芳男
第55回スピンサイエンス学会年会   2016年11月10日   
フェムト秒からマイクロ秒領域における光合成光保護過程の観測
小澄大輔、堀部智子、杉崎満、橋本秀樹
第10回分子科学討論会   2016年9月13日   
Using Excited-State Spin Dynamics of p-Radicals Toward Molecular Spintronics
小澄大輔
ICMM2016   2016年9月4日   
モデルカロテノイドにおける分子内電荷移動状態の解明
小澄大輔、梶川敬之、坂口和彦、勝村成雄、橋本秀樹
光合成セミナー2016   2016年7月9日   
サブ30フェムト秒分光手法による光合成アンテナLH2におけるエネルギー移動の観測
小澄大輔、堀部智子、橋本秀樹
光合成セミナー2016   2016年7月9日   
サブナノ秒ポンプ・プローブ分光による励起三重項状態クロロフィルの観測
小澄大輔、西口智也、橋本秀樹
光合成セミナー2016   2016年7月9日   
紅色光合成細菌Rs. rubrum G9+のLH1サブユニット型複合体とフコキサンチンを用いたLH1複合体の再構成
行平奈央、須貝裕子、藤原正澄、浦上千藍紗、小澄大輔、伊波匡彦、坂口和彦、勝村成雄、橋本秀樹
第30回カロテノイド研究談話会   2016年6月25日   
カルボニル基を導入したb-carotene類縁体の光学応答
小澄大輔、梶川敬之、坂口和彦、勝村成雄、橋本秀樹
第30回カロテノイド研究談話会   2016年6月25日   
Photochemically-Stable Pentacene-Radical Derivatives Toward Molecular Spintronics
Pacifichem2015   2015年12月   
Polyfunctional carotenoid synthesis via one-pot strategy: Toward elucidation of highly efficient energy transfer by marine photosynthetic organisms
Pacifichem2015   2015年12月   
超高速分光で観る光合成におけるカロテノイドの光機能
小澄大輔
第29回カロテノイド研究談話会   2015年9月   
Ultrafast excited state dynamics of marine carotenoid fucoxanthin and its homologues [招待有り]
小澄大輔
LHP2015   2015年3月   
Excited-state dynamics of carotenoid-chlorophyll artificial light-harvesting antenna in femtosecond to microsecond time regime
ICARP2014   2014年11月   
Quantum coherence between B800 and B850 asseblies of light-harvesting complex from purple bacteria observed by 5 fs optical pulses
ICARP2014   2014年11月   
The secret of highly efficient light-harvesting antenna found in brown algal photosynthesis
小澄大輔
ICARP2014   2014年11月   
Ultrafast excited state dynamics of marine carotenoid fucoxanthin and its homologues [招待有り]
小澄大輔
The 17th International Carotenoid Symposium   2014年6月   

競争的資金等の研究課題

 
グラフェンプラズモニクスによる光合成単一超分子計測の確立
文部科学省: 挑戦的萌芽研究
研究期間: 2016年4月 - 2018年3月    代表者: 小澄大輔
極限的時空間反応場における光合成機能解明
池谷科学技術振興財団: 池谷科学技術振興財団 単年度助成
研究期間: 2016年4月 - 2017年3月    代表者: 小澄大輔
文部科学省: 科学研究費補助金(若手研究(A))
研究期間: 2013年 - 2015年    代表者: 小澄 大輔
極長短パルスを用いた光合成系エネルギー伝達機構の解明とコヒーレント制御
文部科学省: 特別研究員奨励費
研究期間: 2008年4月 - 2011年3月    代表者: 小澄大輔
光合成系の色素における超高速現象及び非線形光学応答の研究
文部科学省: 特別研究員奨励費
研究期間: 2006年4月 - 2008年3月    代表者: 小澄大輔