qMaLioffG: A genetically encoded green fluorescence lifetime-based indicator enabling quantitative imaging of intracellular ATP, Satoshi Arai*, Hideki Itoh, Cong Quang Vu, Loan Thi Ngoc Nguyen, Mizuho Nakayama, Masanobu Oshima, Atsuya Morita, Kazuko Okamoto, Satoru Okuda, Aki Teranishi, Madori Osawa, Yoshiteru Tamura, Shigeaki Nonoyama, Megumi Takuma, Toshinori Fujie, Satya Ranjan Sarker, Thankiah Sudhaharan, Akihiro Furube, Tetsuro Katayama, Taketoshi Kiya, E. Birgitte Lane, Tetsuya Kitaguchi*, Nature Communications, 16, 9972 (2025)
A red fluorescent genetically encoded biosensor for in vivo imaging of extracellular l-lactate dynamics, Yuki Kamijo, Philipp Mächler, Natalie Ness, Cong Quang Vu, Tsukasa Kusakizako, Jamsad Mannuthodikayil, Zaneta Ku, Marc Boisvert, Ekaterina Grebenik, Ikumi Miyazaki, Rina Hashizume, Haruaki Sato, Rui Liu, Yukiko Hori, Taisuke Tomita, Tetsuro Katayama, Akihiro Furube, Gabriela Caraveo, Marie-Eve Paquet, Mikhail Drobizhev, Osamu Nureki, Satoshi Arai, Marco Brancaccio, Robert E. Campbell, David Kleinfeld, Yusuke Nasu, Nature Communications, 16, 9531 (2025)
Lysine-arginine imbalance overcomes therapeutic tolerance governed by the transcription factor E3-lysosome axis in glioblastoma, Yongwei Jing, Masahiko Kobayashi, Mahmoud I Shoulkamy, Meiqi Zhou, Ha Thi Vu, Hiroshi Arakawa, Hemragul Sabit, Sadahiro Iwabuchi, Cong Quang Vu, Atsuko Kasahara, Masaya Ueno, Yuko Tadokoro, Kenta Kurayoshi, Xi Chen, Yuhang Yan, Satoshi Arai, Shinichi Hashimoto, Tomoyoshi Soga, Tomoki Todo, Mitsutoshi Nakada, Atsushi Hirao*, Nature Communications, 16, 2876 (2025).
A Thermogenetic Tool Employing Elastin-like Polypeptides for Controlling Programmed Cell Death, Cong Quang Vu*, Satoshi Arai*, ACS Nano, 19, 36, 32280-32290 (2025)
Harnessing Dye-Induced Local Heating in Lipid Membranes: A Path to Near-Infrared Light-Modulated Artificial Synaptic Vesicles, Satya Ranjan Sarker, Takeru Yamazaki, Keitaro Sou, Ichiro Takemura, Yusuke Kurita, Kayoko Nomura, Mari Ichimura, Takahito Suzuki, Ayumi Kai, Takumi Araki, Shinnosuke Hattori, Taniyuki Furuyama, Young-Tae Chang, Taketoshi Kiya, Satoshi Arai*, ACS Nano, 19, 31, 28768-28783 (2025)
Cellular Activity Modulation Mediated by Near Infrared-Irradiated Polydopamine Nanoparticles: In Vitro and Ex Vivo Investigation, Alessio Carmignani*, Takeru Yamazaki*, Matteo Battaglini, Cong Quang Vu, Attilio Marino, Seika Takayanagi-Kiya, Taketoshi Kiya, Andrea Armirotti, Andrea Di Fonzo, Satoshi Arai*, Gianni Ciofani*, ACS Nano, 19, 17, 16267-16286 (2025)
Nanomaterials in cancer starvation therapy: pioneering advances, therapeutic potential, and clinical challenges, Nam Anh Tran, Shehzahdi S Moonshi, Alfred K Lam, Cu Tai Lu, Cong Quang Vu, Satoshi Arai, Hang Thu Ta*, Cancer and Metastasis Reviews 44 (2), 1-32 (2025)
Cardiac dysfunction due to mitochondrial impairment assessed by human iPS cells caused by DNM1L mutations, Madori T Osawa*, Yasunori Fujita, Kazuki Kagami, Masataka Ito, Yoshiteru Tamura, Shoichiro Tateishi, Junya Take, Fumi Hirose, Hidetoshi Hagiwara, Kohsuke Imai, Daisuke Yoshinaga, Shiro Baba, Mitsujiro Osawa, Hiroko Harashima, Kei Murayama, Yuko Akioka, Akira Ohtake, Ikuro Suzuki, Takeshi Adachi, Takeru Yamazaki, Satoshi Arai, Shiro Matsumoto, Tetsuya Kitaguchi, Megumu K Saito, Ikuroh Ohsawa, Shigeaki Nonoyama, Pediatric Research (in press)
Harnessing Dye-induced Photothermal Confinement in Lipid Membranes: A Path to NIR-modulated Artificial Synaptic Vesicles, Satya Ranjan Sarker, Takeru Yamazaki, Keitaro Sou, Ichiro Takemura, Yusuke Kurita, Kayoko Nomura, Mari Ichimura, Takahito Suzuki, Ayumi Kai, Takumi Araki, Shinnosuke Hattori, Taniyuki Furuyama, Young-Tae Chang, Taketoshi Kiya, Satoshi Arai*, bioRxiv.
Development of fluorescence lifetime biosensors for ATP, cAMP, citrate, and glucose using the mTurquoise2-based platform, Chongxia Zhong, Satoshi Arai*, Yasushi Okada*, Cell Reports Methods, 4, 11, 100902 (2024)
Metabolic Tug-of-War between Glycolysis and Translation Revealed by Biochemical Reconstitution, Gaku Sato, Saki Kinoshita, Takahiro G. Yamada, Satoshi Arai, Tetsuya Kitaguchi, Akira Funahashi, Nobuhide Doi, Kei Fujiwara, ACS Synthetic Biology, 13, 5, 1572–1581 (2024).
Quantitative Imaging of Genetically Encoded Fluorescence Lifetime Biosensors, Cong Quang Vu*, Satoshi Arai*, Biosensors 2023, 13(10), 939 (Editor's Choice).
qMaLioffG: A single green fluorescent protein FLIM indicator enabling quantitative imaging of endogenous ATP, #Satoshi Arai*, #Hideki Itoh, #Cong Quang Vu, Mizuho Nakayama, Masanobu Oshima, Atsuya Morita, Kazuko Okamoto, Satoru Okuda, Aki Teranishi, Madori Osawa, Yoshiteru Tamura, Shigeaki Nonoyama, Megumi Takuma, Toshinori Fujie, Satya Ranjan Sarker, Thankiah Sudhaharan, Taketoshi Kiya, E. Birgitte Lane, Tetsuya Kitaguchi*, bioRxiv. www.biorxiv.org/content/10.1101/2023.08.29.555275v1
Applicability and limitations of fluorescence intensity-based thermometry using a palette of organelle thermometers, Takeru Yamazaki, Xiao Liu, Young-Tae Chang *, Satoshi Arai*, Chemosensors, 11 (7), 375 (2023).
Radical Caging Strategy for Cholinergic Optopharmacology, Rikako Nakamura, Takeru Yamazaki, Yui Kondo, Miho Tsukada, Yusuke Miyamoto, Nozomi Arakawa, Yuto Sumida*, Taketoshi Kiya, Satoshi Arai*, Hirohisa Ohmiya*, J. Am. Chem. Soc.,145, 19, 10651–10658 (2023).
Intracellular Magnetic Control over the Reversible Assembly of Silica-Based Magnetic Composite Particles for Photothermal Therapy, Ryota Kameda, Taisei Suzuki, Ikumi Kato, Keishi Suga*, Kanako Watanabe, Kimiko Nagino, Kumiko Hayashi, Satoshi Arai, and Daisuke Nagao*, ACS Applied Nano Materials, 6, 5, 3873–3883 (2023).
A palette of site-specific organelle fluorescent thermometers, Xiao Liu, Takeru Yamazaki (equal first), Haw-Young Kwon, Satoshi Arai,* Young-Tae Chang*, Materials Today Bio, 100405 (2022).
Squaraine probes for bimodal staining of lipid droplets and endoplasmic reticulum imaging in live cell, Ferdinandus, Jie Ren Tan, Jin Heng Lim, Satoshi Arai, Keitaro Sou, Lee Chi-Lik Ken, Analyst, 147, 3570-3577 (2022).
Modulation of Local Cellular Activities using a Photothermal Dye-Based Subcellular-Sized Heat Spot, Ferdinandus, Madoka Suzuki, Cong Quang Vu, Yoshie Harada, Satya Ranjan Sarker, Shin’ichi Ishiwata, Tetsuya Kitaguchi, Satoshi Arai*, ACS Nano, 16, 6, 9004-9018 (2022).
Subcellular-sized Heat Spot by a Photothermal dye based Nanoheater Enabling the Modulation of Cellular Activities, Ferdinandus, Madoka Suzuki, Yoshie Harada, Satya Ranjan Sarker, Shin'ichi Ishiwata, Tetsuya Kitaguchi, Satoshi Arai*, bioRxiv, https://www.biorxiv.org/content/10.1101/2021.12.19.471878v1
3D Printing of Okara Ink: The Effect of Particle Size on the Printability, Cheng Pau Lee, Masaki Takahashi, Satoshi Arai, Chi-Lik Ken Lee and Michinao Hashimoto, ACS Food Science & Technology 1 (11), 2053-2061 (2021).
Ultra-thin, transparent, porous substrates as 3D culture scaffolds for engineering ASC spheroids for high-magnification imaging, Yoshitaka Suematsu, Ya An Tsai, Shinji Takeoka, Clemens Martin Franz, Satoshi Arai, Toshinori Fujie, J. Mater. Chem B, 8, 6999-7008 (2020).
Electrochemical System Encapsulated by Nanoscale Liposomes Enabling On-Demand Triggering of Electroless Deposition at Selected Areas, J. Zhan, M. Lin, S. Arai, W.Y. Wan, K. Sou, H Sato, ACS Applied Nano Materials, 3(6), 5098-5106 (2020).
Highly cooperative fuorescence switching of self-assembled squaraine dye at tunable threshold temperatures using thermosensitive nanovesicles for optical sensing and imaging, Keitaro Sou, Li Yan Chan, Satoshi Arai, Chi-Lik Ken Lee, Scientific Reports, 9, 17991 (2019).
Eurotium Cristatum Fermented Okara as a Potential Food Ingredient to Combat Diabetes, Li Yan Chan, Masaki Takahashi, Pei Jean Lim, Shinya Aoyama, Saneyuki Makino, Ferdinandus, Shi Ya Clara Ng, Satoshi Arai, Hideaki Fujita, Hong Chang Tan, Shigenobu Shibata, Chi-Lik Ken Lee, Scientific Reports, 9, 17536 (2019).
Multifunctional temozolomide-loaded lipid superparamagnetic nanovectors: Dual targeting and disintegration of glioblastoma spheroids by synergic chemotherapy and hyperthermia treatment, A. Marino, A. Camponovo, A. degl'Innocenti, M. Bartolucci, C. Tapeinos, C. Martinelli, D. de Pasquale, F. Santoro, V. Mollo, S. Arai, M. Suzuki, Y. Harada, A. Petretto, G. Ciofani. Nanoscale, 11, 21227-21248 (2019).
Sonic hedgehog enhances calcium oscillations in hippocampal astrocytes, Chihiro Adachi, Naoto Kakinuma, Soohyun Jo, Takayuki Ishii, Yusuke Arai, Satoshi Arai, Tetsuya Kitaguchi, Sen Takeda, and Takafumi Inoue, J. Biol. Chem. 294, 16034-16048 (2019).
Visualizing Alzheimer’s Disease Mouse Brain with Multispectral Optoacoustic Tomography using a Fluorescent probe, CDnir7, Sung-Jin Park, Chris Jun Hui Ho, *Satoshi Arai (co-first), Animesh Samanta, Malini Olivo and Young-Tae Chang, Scientific Reports, 9, 12052 (2019).
The ABC Guide to Fluorescent Toolsets for the Development of Future Biomaterials, Ferdinandus, *Satoshi Arai, Front. Bioeng. Biotechnol. 7:5. doi: 10.3389/fbioe.2019.00005 (2019).
Bright Dots And Smart Optical Microscopy to Probe Intracellular Events in Single Cells, Hideaki Fujita, Chongxia Zhong, Satoshi Arai, and Madoka Suzuki, Front. Bioeng. Biotechnol. | doi: 10.3389/fbioe.2018.00204 (2018).
Extracellular pH imaging of a plant leaf with a polyelectrolyte multilayered nanosheet, D. Someya, S. Arai, T. Fujie, S. Takeoka, RSC Advances 8, 35651-35657 (2018).
Neurotransmitter-Loaded Nanocapsule Triggers On-demand Muscle Relaxation in Living Organism, D. L. Le, Ferdinandus, C. K. Tnee, T. T. V. Doan, S. Arai, M. Suzuki, K. Sou, H. Sato, ACS Applied Materials & Interfaces 10, 37812-37819 (2018).
RGB-Color Intensiometric Indicators to Visualize Spatiotemporal Dynamics of ATP in Single Cells, Satoshi Arai, Rlkus Kriszt, Kazuki Harada, Liang-Sheng Looi, Shogo Matsuda, Devina Wongso, Satoshi Suo, Shoichi Ishiura, Yu-Hua Tseng, Michael Raghunath, Toshiro Ito, Takashi Tsuboi, and Tetsuya Kitaguchi, Angewandte Chemie International Edition 57, 10873-10878 (2018).
Temperature Compensation of Pressure-Sensitive Luminescent Polymer Sensors, Sachiko Sano, Takahiro Yuuki, Tsuyoshi Hyakutake, Katsuaki Morita, Hirotaka Sakaue, Satoshi Arai, Hidetoshi Matsumoto, Tsuyoshi Michinobu, Sensors and Actuators B: Chemical., 255, 1960-1966 (2018).
Optical visualisation of thermogenesis in stimulated single-cell brown adipocytes. R. Kriszt, S. Arai, H. Itoh, M. H. Lee, A. G. Goralczyk, X. M. Ang, A. M. Cypess, A. P. White, F. Shamsi, R. Xue, J. Y. Lee, S.-C. Lee, Y. Hou, T. Kitaguchi, T. Sudhaharan, S. Ishiwata, E. B. Lane, Y.-T. Chang, Y.-H. Tseng, M. Suzuki, M. Raghunath, Scientific Reports, 7, 1383 (2017).
Gold nanoshell-mediated remote myotube activation, Attilio Marino, Satoshi Arai, Yanyan Hou, Andrea Degl'Innocenti, Valentina Cappello, Barbara Mazzolai, Young-Tae Chang, Virgilio Mattoli, Madoka Suzuki, Gianni Ciofani., ACS Nano 11, 2494–2508 (2017). Highlighted at “Gold nanoparticles: A warm-up for muscle cells” Nature Nanotechnology 12. 188 (2017).
Facilely-fabricated luminescent nanoparticle thermosensor for real-time microthermography in living animals, Ferdinandus, *S. Arai (co-first), S. Takeoka, S. Ishiwata, M. Suzuki, H. Sato, ACS Sensors, 1, 1222-1227 (2016). Highlighted at “Nanosensor reveals temperature variation in the muscles of live creatures” C&En News Nov.3, 2016.
Focal calcium monitoring with targeted nanosensors at the cytosolic side of endoplasmic reticulum, Y. Hou, S. Arai, Y. Takei, A. Murata, S. Takeoka, M. Suzuki, Science and Technology of Advanced Materials, 17, 293-299 (2016)
Direct organelle thermometry with fluorescence lifetime imaging microscopy in single myotubes, H. Itoh, S. Arai, T. Sudhaharan, S-C. Lee, Y-T. Chang, S. Ishiwata, M. Suzuki, E.B Lane, Chem. Commun. 52, 4458–4461 (2016, Back Cover).
Intracellular bottom-up generation of targeted nanosensors for single-molecule imaging, Y. Hou, S. Arai, T. Kitaguchi, M. Suzuki, Nanoscale, 8, 3218-3225 (2016).
Thermosensitive nanoplatforms for photothermal release of cargo from liposomes under intracellular temperature monitoring, *S. Arai, C-K. Lee, Y-T. Chang, H. Sato, K. Sou, RSC Adv., 5, 93530-93538 (2015).
Micro-thermography in millimeter-scale animals by orally-dosed fluorescent nanoparticle thermosensors, *S. Arai, Ferdinandus, S. Takeoka, S. Ishiwata, H. Sato, M. Suzuki, Analyst, 140, 7534-7539 (2015, Front Cover).
Piezoelectric Nanoparticle-Assisted Wireless Neuronal Stimulation, A. Marino, S. Arai, Y. Hou, E. Sinibaldi, M. Pellegrino, Y-T. Chang, B. Mazzolai, V. Mattoli, M. Suzuki, G. Ciofani, ACS Nano, 9, 7678–7689 (2015).
The 10^5 gap issue between calculation and measurement in single-cell thermometry, M. Suzuki, V. Zeeb, S. Arai, K. Oyama, S. Ishiwata, Nat. Methods, 12, 802-803 (2015).
Self-calibrated fluorescent thermometer nanoparticles enable in vivo micro thermography in millimeter scale living animals, Ferdinandus, S. Arai, S. Ishiwata, M. Suzuki, H. Sato, Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS), 2015 Transducers, 2228-2231 (2015).
Mitochondria-targeted fluorescent thermometer monitors intracellular temperature gradient, *S. Arai, M. Suzuki, S.-J. Park, J. S. Yoo, L. Wang, H.-H. Ha, Y.-T. Chang, Chem. Commun., 51, 8044–8047 (2015).
Oral dosing of chemical indicators for in vivo monitoring of Ca^2+ dynamics in insect muscle, Ferdinandus, S. Arai, S. Ishiwata, M. Suzuki, H. Sato, PLoS ONE, 10, e0116655 (2015).
Synthesis of large-sized mesoporous phosphosilicate thin film through evaporation-induced polymeric micelle assembly, Y. Li, B. P. Bastakoti, M. Imura, N. Suzuki, X. Jiang, S. Ohki, K. Deguchi, M. Suzuki, S. Arai, Y. Yamauchi, Chem. Asian. J., 10, 183-187 (2015).
A Molecular Fluorescent Probe for Targeted Visualization of Temperature at the Endoplasmic reticulum, *S. Arai, S-C. Lee, Z. Duanting, M. Suzuki, Y-T. Chang, Scientific Reports. 4, 6701 (2014).
Genetically-encoded yellow fluorescent cAMP indicator with an expanded dynamic range for dual-color imaging, H. Odaka, S. Arai, T. Inoue, T. Kitaguchi, PLoS ONE, 9, e100252 (2014).
A nanoparticle-based ratiometric and self-calibrated fluorescent thermometer for single living cells, Y. Takei, S. Arai, A. Murata, M. Takabayashi, K. Oyama, S. Ishiwata, S. Takeoka, M. Suzuki, ACS Nano, 8, 198–206 (2014).
1) 新井敏, 細胞小器官の温度測定のための蛍光温度センサー監修：永島計 NTS出版, 温度ストレスによる生体応答ダイナミクス 2023年4月
2) 新井敏, 分子交雑空間の熱力学エンジニアリング生体分子環境の化学（CSJカレントレビュー）日本化学会編 2023年2月
3) 新井 敏, 分子サイズのオルガネラ蛍光温度計の現在地と未来, 月刊「細胞」12月号, Vol.52 No.14, (2020).
4) 新井 敏, 細胞内のエネルギー収支を可視化するためのツール開発, CMCB News Letter, No.4, 4 (2019)（新学術領域「分子夾雑化学」ニュースレター）
5) 新井 敏, 北口哲也, 細胞内ATPの同時計測を可能にする3色の蛍光センサー,バイオサイエンスとインダストリー,77巻 2号 (2019).
6) Satoshi Arai*, Madoka Suzuki, Nanosized Optical Thermometers, Smart Nanoparticles for Nanomedicine 1st edition in Elsevier, pp199-217 (2018).
7) A. Marino, S. Arai, Y. Hou, M. Pellegrino, B. Mazzolai, V. Mattoli, M. Suzuki, G. Ciofani, Assessment of the Effects of a Wireless Neural Stimulation Mediated by Piezoelectric Nanoparticles (Springer, in press)
8) 鈴木 団，新井 敏，佐藤裕崇: 蛍光センサーを食べさせる!?-昆虫生体機能の可視化の取り組み-. 昆虫と自然 2016年, 7月号.
9) *新井 敏，鈴木 団: 1細胞の温度がなんだというのか. バイオマテリアル-生体材料-, 2016年, 34巻3号 p216-223.
10) M. Suzuki, *S. Arai (co-first), K. Oyama, S. Ishiwata: Luminescent nanothermometers for biological applications, CRC Concise Encyclopedia of Nanotechnology (ed. by B.I. Kharisov, O.V. Kharissova and U.O. Mendez, Taylor and Francis/CRC Press) 2015年, p851-859.
11) 大山廣太郎, 新井 敏, 鈴木団: 細胞内温度測定に適した蛍光温度計, ナノ学会誌, 2014年, Vol.13, No.1.
15) Intracellular click reaction with a fluorescent chemical Ca2+ indicator to prolong its cytosolic retention, Y. Takei, A. Murata, K. Yamagishi, S. Arai, H. Nakamura, T. Inoue, S. Takeoka. Chem Commun., 49, 7313–7315 (2013).
14) Mass Spectrometric Screening of Ligands with Lower Off-rate from a Clicked-based Pooled Library, *S. Arai, S. Hirosawa, Y. Oguchi, M. Suzuki, A. Murata, S. Ishiwata, S. Takeoka, ACS Comb. Sci., 14, 451–455 (2012).
13) A TEMPO-Conjugated fluorescent probe for monitoring mitochondrial redox reactions, S. Hirosawa, S. Arai, S. Takeoka, Chem Commun., 48, 4845–4847 (2012).
12) Walking nanothermometers: Spatiotemporal temperature measurement of transported acidic organelles in single living cells, K. Oyama, M. Takabayashi, Y. Takei, S. Arai, S. Takeoka, S. Ishiwata, and M. Suzuki, Lab Chip, 12, 1591–1593 (2012).
11) Evaluation of the influence of ionization states and spacers in the thermotropic phase behavior of a amino acid-based cationic lipids and the tranfection efficiency of their assemblies, S. R. Sarker, S. Arai, M. Murate, H. Takahasi, M. Takata, T. Kobayashi, S. Takeoka, Int. J. Pharm. 422, 364–73 (2012).
10) Aqueous Colloidal Mesoporous Nanoparticles with Ethenylene-Bridged Silsesquioxane Frameworks C. Urata, H. Yamada, R. Wakabayashi, Y. Aoyama, S. Hirosawa, S. Arai, S. Takeoka, Y. Yamauchi, K. Kuroda, J. Am. Chem. Soc., 133, 8102–8105 (2011).
9) Non-diastereomeric Sensing of Chirality by Non-chiral Porphines, J. Labuta, S. Ishihara, A. Shundo, S. Arai, S. Takeoka, K. Ariga, J. P. Hill, Chem. Eur. J. , 17, 3558–3561 (2011).
8) Fluorescent “Turn-on” System Utilizing the Quencher-conjugated Peptide toward Specific Protein Labeling for Living Cells, *S. Arai, Su-In Yoon, A. Murata, M. Takabayashi, Xiaoyu Wu, Yixin Lu, S. Takeoka, M. Ozaki, Biochem. Biophys. Res. Commun. 404, 211–216 (2011).
7) Construction of a "Turn-on" Fluorescent Probe System for His-tagged Proteins, A. Murata, S. Arai, Yoon Su-In, M. Takabayashi, M. Ozaki, S. Takeoka, Bioorg. Med. Chem. Lett. 20, 6905–6908 (2010).
6) Synthesis and Self-Assembling Behavior of a Porphyrin Bearing Multiple meso-Conjugated Barbiturates, *S. Arai, T. Okamura, S. Takeoka, Tetrahedron letters, 51, 5177–5180 (2010).
5) Synthesis of Porphyrin Bearing Uracyl Group and Their Assembly Induced by Melamine Derivative, *S. Arai, H. Ohshiro, H. Nishide, S. Takeoka., Polym. Adv. Technol., 18, 497–501 (2007).
4) Atropisomers of meso-Conjugated Uracyl Porphyrin Derivatives and their Assembling Structures, *S. Arai, D. Niwa, H. Nishide, S. Takeoka., Org. Lett., 9, 17(2007).
3) Porphyrin Capped with Calix[4]arene via Hydrogen Bonds, *S. Arai, H. Ohkawa, S. Ishihara, S. Takeoka, T. Shibue, H. Nishide., Bull. Chem. Soc. Jpn., 78, 2007 (2005).
2) Stability of porphyrin and calix[4]arene complexes analyzed by electrospray ionization mass spectrometry, *S. Arai, H. Ohkawa, S. Ishihara, S. Takeoka, T. Shibue, H. Nishide., Rapid Commun. Mass Spectro., 18, 2065 (2004).
1) A Duplex of Tetra(2-pyridyl)porphyrin and Tetrahydroxylcalix[4]arene, H. Ohkawa, S. Arai, S. Takeoka, T. Shibue, H. Nishide., Chem. Lett., 1052 (2003).