* 最近の主な発表論文等 * 
       
       ・ The lowest excited triplet state of potassium 4-methoxysalicylic acid
      (4-MSK), 
         a skin-whitening active ingredient,  
         and its effects on riboflavin-photosensitized singlet oxygen generation 
             S. Hisanaga, S. Hirokawa, K. Miyazawa,, M. Yagi, A. Kikuchi 
             Journal of Photochemical and Photobiology A: Chemistry, 472, 116743 (2026).  
       ・ Photoexcited triplet state and singlet oxygen generation of quinine, an antimalarial drug 
             Y. Suzuki, M. Yagi, A. Kikuchi 
             Photochemical & Photobiological Sciences, 22, 2851-2859 (2023). 
       ・ A novel characteristics of a water-soluble UV-B absorber, 2-phenylbenzimidazole-5-sulfonic
      acid;  
         suppression of riboflavine-sensitized singlet oxygen generation  
             S. Hisanaga, K. Miyazawa, M. Yagi, A. Kikuchi 
             Chemistry Letters, 52, 798-802 (2023). 
       ・ Suppression of menthyl anthranilate (UV-A sunscreen)-sensitized singlet
      oxygen generation  
         by Trolox and α-tocopherol 
             S. Kitasaka, M. Yagi, A. Kikuchi 
             Photochemical & Photobiological Sciences, 19, 913-919 (2020). 
       ・ Short-lived and nonphosphorescent triplet state of Mexoryl SX , a UV-A
      sunscreen 
             Y. Shamoto, R. Shimizu, M. Yagi, N. Oguchi-Fujiyama, J. Kang, A.
      Kikuchi 
             Applied Magnetic Resonance, 51, 567-580 (2020).   
       ・ A novel chracteristic of salicylate UV absorbers: suppression of diethylhexyl 2,6-naphthalte  
          (Corapan TQ)-photosensitized singlet oxygen generation 
             S. Fukuchi, M. Yagi, N. Oguchi-Fujiyama, J. Kang, A. Kikuchi 
             Photochemical & Photobiological Sciences, 18, 1556-1564 (2019).  
       ・ Suppression of riboflavin-sensitized singlet oxygen generation by L-ascorbic acid, 3-O-ethyl-L-ascorbic 
         acid and Trolox 
            R. Shimizu, M. Yagi,  A. Kikuchi 
             Journal of Photochemistry and Photobiology B: Biology, 191, 116-122 (2019). 
       ・ Photophysical properties of diethylhexyl 2,6-naphthalate (Corapan TQ),
      a photostabilizer for sunscreens 
             R. Shimizu, M. Yagi, N. Oguchi-Fujiyama, K. Miyazawa, A. Kikuchi 
             Photochemical & Photobiological Sciences, 17, 1206-1212 (2018).  
       ・ Photophysical properties of hexyl diethylaminohydroxybenzoylbenzoate (Uvinul
      A Plus), a UV-A 
         absorber 
             Y. Shamoto, M. Yagi, N. Oguchi-Fujiyama, K. Miyazawa, A. Kikuchi 
             Photochemical & Photobiological Sciences, 16, 1449-1457 (2017). 
       ・ Triplet–triplet energy transfer between UV absorbers in solutions at room
      temperature 
             S. Matsumoto, R. Kumasaka, M. Yagi, A. Kikuchi 
             Journal of Photochemistry and Photobiology A: Chemistry, 346, 396-400 (2017). 
       ・ 一重項酸素の直接観測と絶対定量 
             八木幹雄 
             CSJ カレントレビュー21  
             活性酸素・フリーラジカルの科学 ―計測技術の新展開と広がる応用― 
             13章, 137-142 (2016). 
       ・ Optical and electron paramagnetic resonance studies of the excited triplet
      states of UV-B absorbers: 
          2-ethylhexyl salicylate and homomenthyl salicylate 
             K. Sugiyama, T. Tsuchiya, A. Kikuchi, M. Yagi 
             Photochemical & Photobiological Sciences, 14, 1651-1659 (2015). 
       ・ UV吸収剤の光エネルギー移動の解明とその光安定化理論に基づき設計した新規UV-B吸収剤 
         ジオクチルメトキシベンジリデンマロネートの機能 
             小口 希,宮沢和之,菊地あづさ,八木幹雄 
             Fragrance Journal, 43, No. 6, 14-19 (2015). 
       ・ Energy-donor phosphorescence quenching study of triplet-triplet energy transfer between UV absorbers 
             A. Kikuchi, Y. Nakabai, N. Oguchi-Fujiyama, K. Miyazawa, M. Yagi 
             Journal of Luminescence, 166, 203-208 (2015).  
       ・ Photoexcited triplet states of UV-B absorbers: ethylhexyl triazone and
      diethylhexylbutamido triazone 
             T. Tsuchiya, A. Kikuchi, N. Oguchi-Fujiyama, K. Miyazawa, M. Yagi 
             Photochemical & Photobiological Sciences, 14, 807-814 (2015).  
       ・ Photoexcited states of UV absorbers, benzophenone derivatives 
             R. Kumasaka, A. Kikuchi, Yagi 
             Photochemistry and Photobiology, 90, 727-733 (2014).  
       ・ Triplet–triplet energy transfer from a UV-A absorber butylmethoxydibenzoylmethane 
         to UV-B absorbers 
             A. Kikuchi, N. Oguchi-Fujiyama, K. Miyazawa, M. Yagi 
             Photochemistry and Photobiology, 90, 511-516 (2014).  
       ・ 新規UV-B吸収剤: ジオクチルメトキシベンジリデンマロネートの設計とUV-A吸収剤 
         光安定化効果 
             小口 希,宮沢和之,菊地あづさ,八木幹雄 
             日本化粧品技術者会誌,47, 209-215 (2013). 
       ・ Optical and time-resolved electron paramagnetic resonance studies of
      the excited states  
         of a UV-B absorber 4-methylbenzylidenecamphor 
             A. Kikuchi, K. Shibata, R. Kumasaka, M. Yagi 
             Journal of Physical Chemistry A, 117,1413-1419 (2013). 
       ・ Photoexcited singlet and triplet states of a UV absorber ethylhexyl
      methoxycrylene 
             A. Kikuchi, Y. Hata, R. Kumasaka, Y. Nanbu, M. Yagi 
             Photochemistry and Photobiology, 89, 523-528 (2013). 
       ・ Excited states of menthyl anthranilate: a UV-A absorber 
             A. Kikuchi, K. Shibata, R. Kumasaka, M. Yagi 
             Photochemical & Photobiological Sciences, 12, 246-253 (2013). 
       ・ Photopysical properties of dioctyl 4-methoxybenzylidenemalonate:
      UV-B absorber 
             N. Oguchi-Fujiyama, K. Miyazawa, A. Kikuchi, M. Yagi 
             Photochemical & Photobiological Sciences, 11, 1528-1535 (2012). 
       ・ Photoexcited triplet states of new UV absorbers, cinnamic acid 2-methylphenyl esters 
             A. Kikuchi, H. Saito, M. Mori, M. Yagi 
             Photochemical & Photobiological Sciences, 10, 1902-1909 (2011). 
       ・ Direct observation of the intermolecular triplet-triplet energy transfer
      from UV-A absorber  
         4-tert-butyl-4'-methoxydibenzoylmethane to UV-B absorber octyl methoxycinnamate 
             A. Kikuchi, M. Yagi 
             Chemical Physics Letters, 513, 63-66 (2011). 
       ・ 励起分子のEPR (ESR) 
             八木幹雄 
             電子スピンサイエンス,9, 44-47 (2011). 
       ・ Excited triplet state of a UV-B absorber, octyl methoxycinnamate 
             A. Kikuchi, S. Yukimaru, N. Oguchi, K. Miyazawa, M. Yagi 
             Chemistry Letters, 39, 633-635 (2010). 
       ・ Photoinduced diffusive mass transfer in o-Cl-HABI amorphous thin
      films 
             A. Kikuchi, Y. Harada, M. Yagi, T. Ubukata, Y. Yokoyama,
      J. Abe 
             Chemical Communications, 46, 2262-2264 (2010). 
       ・ Optical and electron paramagnetic resonance studies of the excited
      states of  
         4-tert-butyl-4'-methoxydibenzoylmethane and 4-tert-butyl-4'-methoxydibenzoylpropane 
             A. Kikuchi, N. Oguchi, M. Yagi 
             Journal of Physical Chemistry A, 113, 13492-13497 (2009). 
       ・ Luminescence and electron paramagnetic resonance studies of the excited
       
         states of a UV absorber, 2-methylphenyl 2-naphthoate 
             A. Kikuchi, M. Yagi 
             Chemistry Letters, 38, 770-771 (2009). 
       ・ The phosphorescent triplet states of aza-aromatics and their protonated
       
         cations in rigid solutions of ethanol and 1-butyl-3-methylimidazolium
      hexafluorophosphate 
             R. Matsuo, T. Uchiyama, K. Mogi, S. Kaneko, K. Kuwayama,  
             A. Kikuchi, M. Yagi 
             Journal of Photochemistry and Photobiology A: Chemistry,  
             203, 18-23 (2009). 
       ・ Direct measurements of absolute concentration and lifetime of singlet
       
         oxygen in the gas phase by electron paramagnetic resonance 
             K. Hasegawa, K. Yamada, R. Sasase, R. Miyazaki, A. Kikuchi,
      M. Yagi 
             Chemical Physics Letters, 457, 312-314 (2008). 
       
       
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