発表論文など

論文・総説

2021

  • 46.“Crystal structure of a 1,6-bis(phenylethynyl)pyrene-based cyclophane that exhibits mechanochromic luminescence”
    S. Shimizu, S. Thazhathethil, K. Takahashi,* T. Nakamura, Y. Sagara*
    Mol. Syst. Des. Eng. 2021, in press. (Invited)

  • 45.“Rotaxane-Based Dual Function Mechanophores Exhibiting Reversible and Irreversible Responses”
    T. Muramatsu, Y. Okado, H. Traeger, S. Schrettl, N. Tamaoki, C. Weder,* Y. Sagara*
    J. Am. Chem. Soc. 2021, 143, 9884–9892.

  • 44.“Folded Perylene Diimide Loops as Mechanoresponsive Motifs”
    H. Traeger, Y. Sagara, D. J. Kiebala, S. Schrettl, C. Weder*
    Angew. Chem. Int. Ed. 2021, 60, 16191–16199.
  • 43.“Mechanically Responsive Luminescent Polymers Based on Supramolecular Cyclophane Mechanophores”
    Y. Sagara,* H. Traeger, J. Li, Y. Okado, S. Schrettl, N. Tamaoki, C. Weder*
    J. Am. Chem. Soc. 2021, 143, 5519–5525.
  •     

  • 42.“Two-step mechanoresponsive luminescence and mechanical stimuli-induced release of small molecules exhibited by a luminescent cyclophane”
    Y. Sagara,* K. Takahashi, T. Nakamura, N. Tamaoki
    J. Mater. Chem. C 2021, 9, 1671–1677.

2020

  • 41.“Mechanical and Thermal Stimuli-induced Release of Toluene Included in Luminescent Crystals as One-dimensional Solvent Channels”
    Y. Sagara,* K. Takahashi, T. Nakamura, N. Tamaoki
    J. Mater. Chem. C 2020, 8, 10039–10046.
  • 40.“Mechanochromic Luminescence from Crystals Consisting of Molecular Sheets Constructed by Intermolecular Hydrogen Bonds”
    Y. Sagara,* K. Takahashi, T. Nakamura, N.Tamaoki
    Chem. Asian J. 2020, 15, 478–482. (Invited)
    (Special Issue: “100th Annual Meeting of the Chemical Society of Japan”)
  • 39.“Crystal structure and thermoresponsive luminescence of a 9,10-bis(phenylethynyl)anthracene-based cyclophane”
    Y. Sagara,* K. Takahashi, T. Nakamura, N. Tamaoki
    Mol. Syst. Des. Eng. 2020, 5, 205–211. (Invited)
    (Special Issue: “MSDE Emerging Investigators 2020”)

2019

  • 38.“Mechanoresponsive Behavior of a Polymer-Embedded Red-Light Emitting Rotaxane Mechanophore”
    T. Muramatsu, Y. Sagara,* H. Traeger, N. Tamaoki, C. Weder*
    ACS Appl. Mater. Interfaces 2019, 11, 24571–24576.
  • 37.“Rotaxane-based Mechanophores Enable Polymers with Mechanically Switchable White
    Photoluminescence”
    Y. Sagara,* M. Karman, A. Seki, M. Pannipara, N. Tamaoki, C. Weder*
    ACS Cent. Sci. 2019, 5, 874–881.

    *プレスリリースを行った。C&EN NewsのVIDEO欄, MRS BulletinのMaterials NEWS欄(Vol.44, p.601)、Chem-Stationのスポットライトリサーチ、月刊JETI(2020年2月号)など様々なメディアで取り上げられた。
  • 36.“Photoinduced Emission Color Change of a Rubbed Film of a Bis(cyanostyryl)benzene Analogue”
    R. Kaneko, Y. Sagara, S. Katao, N. Tamaoki, C. Weder, and H. Nakano*
    Chem. Eur. J. 2019, 25, 6162–6169.
  • 35.“Temperature Controlled Locally Excited and Twisted Intramolecular Charge Transfer State Dependent Fluorescence Switching in Triphenylamine-Thiazole Derivatives”
    A. Kundu, S. Karthikeyan, Y. Sagara, D. Moon,* S. P. Anthony*
    ACS Omega 2019, 4, 5147–5154.
  • 34.“Functional Polymers Through Mechanochemistry”
    S. Schrettla,* D. W. R. Balkenende, C. Calvino, M. Karman, A. Lavrenova, L. Neumann, Y. Sagara, E. Verde-Sesto, M. D. Giannantonio, K. M. Fromm, M. Lattuada, C. Weder*
    Chimia 2019, 73, 7–11.
  • 33.“A 1,6-Diphenylpyrene-based, Photoluminescent Cyclophane Showing a Nematic Liquid-crystalline Phase at Room Temperature”
    Y. Sagara,* T. Muramatsu, N. Tamaoki
    Crystals 2019, 9, 92. (Invited)
    (Special Issue: Synthesis and Properties of Light-emitting Liquid Crystals)
  • 32.“Mechanoresponsive Luminescent Polymer Blends Based on an Excimer-Forming Telechelic Macromolecule”
    C. Calvino, Y. Sagara, V. Buclin, A. P. Haehnel, A. del Prado, C. Aeby, Y. C. Simon, S. Schrettl, C. Weder*
    Macromol. Rapid Commun. 2019, 40, 1800705.

2018

  • 31.“Cyclophane-Based Fluorescence Tuning Induced by Hydrostatic Pressure Changes”
    Y. Sagara,* N. Tamaoki, G. Fukuhara*
    ChemPhotoChem 2018, 2, 959–963.
  • 30.“Unusual Fluorescent Photoswitching of Imidazole Derivatives: Role of Molecular Conformation and Twist Angle Controlled Organic Solid State Fluorescence”
    A. Kundu, S. Karthiheyan, Y. Sagara, D. Moon, S. P. Anthony*
    Phys. Chem. Chem. Phys. 2018, 20, 27385–27393.
  • 29.“Linearly Polarized Photoluminescence from an Asymmetric Cyclophane Showing Thermo- and Mechanoresponsive Luminescence”
    Y. Sagara,* A. Seki, Y. Kim, N. Tamaoki*
    J. Mater. Chem. C 2018, 6, 8453–8459.
  • 28.“Drastic Modulation of Stimuli-Responsive Fluorescence by a Subtle Structural Change of Organic Fluorophore and Polymorphism Controlled Mechanofluorochromism”
    P. S. Hariharan, G. Parthasarathy, A. Kundu, S. Karthikeyan, Y. Sagara, D. Moon,* S. P. Anthony*
    Cryst. Growth Des. 2018, 18, 3971–3979.
  • 27.“Stimuli-Responsive Dual-Color Photon Upconversion: A Singlet-to-Triplet Absorption Sensitizer in a Soft Luminescent Cyclophane”
    K. Mase, Y. Sasaki, Y. Sagara,* N. Tamaoki, C. Weder, N. Yanai,* N. Kimizuka*
    Angew. Chem. Int. Ed. 2018, 57, 2806–2810.
  • 26.“Rotaxanes as Mechanochromic Fluorescent Force Transducers in Polymers”
    Y. Sagara,* M. Karman, E. Verde-Sesto, K. Matsuo, Y. Kim, N. Tamaoki, C. Weder*
    J. Am. Chem. Soc. 2018, 140, 1584–1587.

    *科学雑誌「化学」(2018年9月号)で紹介された。

2017

  • 25.“Mechanoresponsive Luminescence and Liquid-crystalline Behaviour of a Cyclophane Featuring Two 1,6-Bis(phenylethynyl)pyrene Groups”
    Y. Sagara,* N. Tamaoki*
    RSC Adv. 2017, 7, 47056–47062.
  • 24.“Asymmetric Cyclophanes Permit Access to Supercooled Nematic Liquid Crystals with Stimuli-responsive Luminescence”
    Y. Sagara,* C. Weder, N. Tamaoki*
    Chem. Mater. 2017, 29, 6145–6152.
  • 23.“Mechano- and Thermoresponsive Photoluminescent Supramolecular Polymer”
    A. Lavrenova, D. W. R. Balkenende, Y. Sagara, S. Schrettl, Y. C. Simon, C. Weder*
    J. Am. Chem. Soc. 2017, 139, 4302–4305.
  • 22.“Temperature-Dependent Mechanochromic Behavior of Mechanoresponsive Luminescent Compounds”,
    Y. Sagara,* K. Kubo, T. Nakamura, N. Tamaoki, C. Weder*
    Chem. Mater. 2017, 29, 1273–1278.

2016

  • 21.“Tuning the Thermo- and Mechanoresponsive Behavior of Luminescent Cyclophanes”
    Y. Sagara,* C. Weder, N. Tamaoki*
    RSC Adv. 2016, 6, 80408–80414.
  • 20.“A Mechano- and Thermoresponsive Luminescent Cyclophane”
    Y. Sagara,* Y. C. Simon, N. Tamaoki, C. Weder*
    Chem. Commun. 2016, 52, 5694–5697.
  • 19.“A Thermo- and Mechanoresponsive Cyano-substituted Oligo(p-Phenylene Vinylene) Derivative with Five Emissive States”
    Y. Sagara,* A. Lavrenova, A. Crochet, Y. C. Simon, K. M. Fromm, C. Weder*
    Chem. Eur. J. 2016, 22, 4374–4378.
  • 18.“Mechanoresponsive Luminescent Molecular Assemblies: An Emerging Class of Materials”
    Y. Sagara,* S. Yamane, M. Mitani, C. Weder, T. Kato*
    Adv. Mater. 2016, 28, 1073–1095. (Front Cover Picture)

2005-2015

  • 17.“Mechanochemistry in Polymers with Supramolecular Mechanophores”
    A. P. Haehnel, Y. Sagara, Y. C. Simon,* C. Weder*
    Top. Curr. Chem. 2015, 369, 345−375.
  • 16.“Thermal or Mechanical Stimuli-Induced Photoluminescence Color Change of a Molecular Assembly Composed of an Amphiphilic Anthracene Derivative in Water”
    Y. Sagara, T. Komatsu, T. Terai, T. Ueno, K. Hanaoka, T. Kato, T. Nagano*
    Chem. Eur. J. 2014, 20, 10397−10403.
  • 15.“Covalent Attachment of Mechanoresponsive Luminescent Micelles to Glasses and Polymers in Aqueous Conditions”
    Y. Sagara, T. Komatsu, T. Ueno, K. Hanaoka, T. Kato, T. Nagano*
    J. Am. Chem. Soc. 2014, 136, 4273−4280.
  • 14.“A Water-soluble Mechanochromic Luminescent Pyrene Derivative Exhibiting Recovery of the Initial Photoluminescence Color in a High-humidity Environment”
    Y. Sagara, T. Komatsu, T. Ueno, K. Hanaoka, T. Kato, T. Nagano*
    Adv. Funct. Mater. 2013, 23, 5277–5284.
  • 13.“Steric Effects on Excimer Formation for Photoluminescent Smectic Liquid-crystalline Materials”
    S. Yamane, Y. Sagara, T. Kato*
    Chem. Commun. 2013, 49, 3839–3841.
  • 12.“Mechanochromic Luminescent Liquid Crystals Based on a Bianthryl Moiety”
    Shogo Yamane, Yoshimitsu Sagara, Toshiki Mutai, Koji Araki, Takashi Kato*
    J. Mater. Chem. C 2013, 1, 2648–2656.
  • 11.“Stimuli-Responsive Photoluminescent Liquid Crystals”
    S. Yamane, K. Tanabe, Y. Sagara, T. Kato*
    Top. Curr. Chem. 2012, 318, 395–406.
  • 10.“Brightly Tri-colored Mechanochromic Luminescence from the Single Luminophore of a Liquid Crystal: Reversible Writing and Erasing of the Images”
    Y. Sagara, T.Kato*
    Angew. Chem. Int. Ed. 2011, 50, 9128–9132. (Inside Cover Picture)


    *新聞「化学工業日報」(2011年8月1日発行)、「Chemical and Engineering News (C&E News)」 (Vol. 89, Issue 33) (米国化学会)、「Chemistry World」(英国王立化学会)(2011年8月3日)、NPG Asia MaterialsのResearch Highlight(2011年12月5日)、および科学雑誌「Newton」(2011年12月号)などで紹介された。また、米国化学会のホームページにおいて、Noteworthy Chemistryとして紹介された (2011年10月24日)

  • 9.“Piezochromic Luminescence of Amide and Ester Derivatives of Tetraphenylpyrene—Role of Amide Hydrogen Bonds in Sensitive Piezochromic Response”
    M. Sase, S. Yamaguchi, Y. Sagara, I. Yoshikawa, T. Mutai, K. Araki*
    J. Mater. Chem. 2011, 21, 8347–8354.
  • 8.“A Mechanical and Thermal Responsive Luminescent Liquid Crystal Forming a Colourless Film under Room Light”
    Y. Sagara, T. Kato*
    Supramol. Chem. 2011, 23, 310–314.
  • 7.“A Thermoresponsive Photoluminescent Smectic Liquid Crystal: Change of Photoluminescent Color on the Smectic–Smectic Phase Transition”
    S. Yamane, Y. Sagara, T. Kato*
    Chem. Commun. 2009, 3597–3599.
  • 6.“Mechanically Induced Luminescence Changes in Molecular Assemblies”
    Y. Sagara, T. Kato,*
    Nat. Chem. 2009, 1, 605–610.
  • 5.“A Stimuli-Responsive, Photoluminescent, Anthracene-Based Liquid Crystal: Emission Color Determined by Thermal and Mechanical Processes”
    Y. Sagara, S. Yamane, T. Mutai, K. Araki, T. Kato*
    Adv. Funct. Mater. 2009, 19, 1869–1875.
  • 4.“Stimuli-Responsive Luminescent Liquid Crystals: Change of Photoluminescent Colors Triggered by a Shear-Induced Phase Transition”
    Y. Sagara, T. Kato*
    Angew. Chem. Int. Ed. 2008, 47, 5175–5178.

    *科学雑誌「現代化学」(2008年10月号)、新聞「日経産業新聞」(2008年6月11日発行)に紹介された。
  • 3.“Material Design for Piezochromic Luminescence: Hydrogen-Bond-Directed Assemblies of a Pyrene Derivative”
    Y. Sagara, T. Mutai, I. Yoshikawa, K. Araki*
    J. Am. Chem. Soc. 2007, 129, 1520–1521.

    *科学雑誌「Newton」(2007年6月号)、科学雑誌「現代化学」(2008年10月号)、新聞「化学工業日報」(2007年3月15日発行)などで紹介された。
  • 2.“Uniaxially Parallel Alignment of a Smectic A Liquid-Crystalline Rod−Coil Molecule and Its Lithium Salt Complexes Using Rubbed Polyimides”
    Y. Iinuma, K. Kishimoto, Y. Sagara, M. Yoshio, T. Mukai, I. Kobayashi, H. Ohno, T. Kato*
    Macromolecules 2007, 40, 4874–4878.
  • 1.“Two Dimensionally Ion-Conductive Liquid Crystals of Cholesterol/Tetra(Ethylene Oxide) Block Molecules”
    K. Kishimoto, Y. Sagara, T. Mukai, H. Ohno, N. Tamaoki, T. Kato*
    Mol. Cryst. Liq. Cryst. 2005, 435, 777–785.

日本語の解説記事等

  • 9.相良剛光
    「ゲスト分子が決定する結晶形成プロセス」、科学と工業、74、217、2021。
  • 8.相良剛光
    「クロミックポリマー」、高分子、68、501-505、2019。
  • 7.相良剛光
    「伸ばすと光るゴム―超分子メカノルミノフォアの創製―」、現代化学、572、56-59、2018。
  • 6.相良剛光
    「機械的刺激で発光色が変化する有機材料」、化学と教育、66、232-235、2018。
  • 5.相良剛光
    「渡り鳥研究者」、液晶、21、79、2017。
  • 4.相良剛光・三谷真人・長野哲雄・加藤隆史
    「デンドロンを利用した機械的刺激応答性発光材料の開発」、ファインケミカル、44、21-28、2015。
  • 3.相良剛光・加藤隆史
    「三色の発光色を示すメカノクロミックルミネッセンス液晶材料の開発」、液晶、17、117-124、2013。
  • 2.相良剛光・加藤隆史
    「液晶-構造制御と機能化の最前線-」(シーエムシー出版)中の第二章「超分子液晶の分子設計と 環境・刺激応答性材料への展開」の章、16-22、2010。
  • 1.加藤隆史・一川尚広・相良剛光
    「ソフトマター~分子設計・キャラクタリゼーションから機能性材料まで」(丸善)中の第二章 第三項「液晶」、41-49、2009。

受賞

  • 公益財団法人 新世代研究所(2021年5月)
    ATI 研究奨励賞 
    相良剛光
    「シクロファンを用いた機械的刺激を鋭敏に検知する複合材料の開発」
  • 東京工業大学(2020年7月)
    東工大挑戦的研究賞 末松特別賞
    相良剛光
    「環状構造を持つ超分子メカノフォアの開発」
  • 第28回ポリマー材料フォーラム
    広報委員会パブリシティ賞
    相良剛光
    「伸縮に応じて蛍光をOn/Offスイッチするエラストマー」
  • 文部科学省(2019年4月)
    文部科学大臣表彰 若手科学者賞
    相良剛光
    「機械的刺激に応じて発光特性が変化する有機超分子材料の研究」

報道、プレスリリース等

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