1. "Conjugate substitution reaction of α-(substituted methyl)acrylates in polymer chemistry"
    Y. Kohsaka, Polym. J. in press     (DOI/10.1038/s41428-020-0376-z)
 
   
  1. "Magnesium bromide (MgBr2) as a catalyst for living cationic polymerization and ring-expansion cationic polymerization"
    Y. Daito, R. Kojima, N. Kusuyama, Y. Kohsaka, M. Ouchi, Polym. Chem. 2021, in press (DOI: 10.1039/D0PY01584A)
    Collaboration with Prof. Ouchi's Group in Kyoto University; Invited for 'Molecularly Defined Polymers: Synthesis and Function'
  2. "Controls and Effects of Monomer Junctions and Sequences in Curable and Degradable Polyarylate Containing Acrylate Moieties"
    Y. Kohsaka, K. Nagai    , Macromol. Rapid Commun. 2021, in press (doi: 10.1002/marc.202000570)
  3. "Degradable and curable poly(conjugated ester)s prepared by acryl- and conjugate-substitutions of the ‘smallest’ monomer"
    Y. Kohsaka, K. Nagai, Eur. Polym. J. 2020, 141, 110049.)
  4. "Divergence of polycondensation by a tandem reaction based on sequential conjugate substitutions"
    K. Hagiwara, Y. Kohsaka, Polym. Chemistry. 2020, 11, 5128-5132.     (Back Cover)
  5. "End-reactive poly(tetrahydrofuran) for functionalization and graft copolymer synthesis via a conjugate substitution reaction"
    Y. Kohsaka, N. Nagatsuka, Polym. J. 2020, 52, 75 (doi: 10.1038/s41428-019-0258-4)

  6. "Synthesis of Poly(Conjugated Ester)s by Ring-Opening Polymerization of Cyclic Hemiacetal Ester Bearing Acryl Skeleton"
    Y. Kohsaka, M. Yamashita, Y. Matsuhashi, S. Yamashita, Eur. Polym. J. 2019, 120, 109185

  7. "Synthesis and properties of polyethers containing 1,3-butadiene skeleton in the backbones"
    Y. Kohsaka, A. Hiramatsu, Chem. Lett. 2019, 48, 894.

  8. "Radical Polymerization of ‘Dehydroaspirin’ with a Formation of Hemiacetal Ester Skeleton: A Hint for Recyclable Vinyl Polymers"
    A. Kazama, Y. Kohsaka, Polym. Chem. 10, 2764-2768 (2019) (10.1039/C9PY00474B) (Inside Cover).


  9. "Conjugate substitution and addition of α-substituted acrylate: a highly efficient, facile, convenient, and versatile approach to fabricate degradable polymers "
    Y. Kohsaka, T. Miyazaki, K. Hagiwara, Polym. Chem. 9, 1610-1617 (2018) (DOI:10.1039/C7PY02114C). (Invited as Emerging Innovators)

  10. "Bifunctional Acyl-1,2,4-triazole: An Alternative Monomer of Dicarbonyl Chloride for Metal- and Halogen-Free Polyester Synthesis"
    Y. Kohsaka, K. Homma, I. Mori, S. Sugiyama, Y. Kimura, Chem. Lett, 47, 221-224 (2018) .

  11. "Esterification with aromatic acyl-1,2,4-triazole catalyzed by weak base at the rate comparable to acyl chloride"
    Y. Kohsaka, K. Homma, S. Sugiyama, Y. Kimura, Chem. Lett, 47, 100-102 (2018).

  12. "Acid- or photo-cleavable polyrotaxane: Subdivision of supramolecular main-chain type polyrotaxane structure induced by acidolysis or photolysis"
    J. Araki, Y. Honda, Y. Kohsaka, Polymer, 25, 134-137 (2017).

  13. "Anionic polymerization of ethyl acrylate initiated by tetrabutylammonium azide: direct synthesis of end-clickable polyacrylate"
    Y. Kataoka, Y. Kohsaka, T. Kitaura, S. Domae, S. Ishihara, T. Kitayama, Polym. Chem. 8, 3858-3861 (2017). (Front Cover)

  14. "Polymerization of α-(Halomethyl)acrylates through Sequential Nucleophilic Attack of Dithiols using a Combination of Addition–Elimination and Click Reactions"
    Y. Kohsaka, K. Hagiwara, K. Ito, Polym. Chem. 8, 976-979 (2017).

  15. "Synthesis of isotactic poly[α-(hydroxymethyl)acrylate] by anionic polymerization of the protected monomer"
    Y. Kohsaka, K. Yamamoto, K. Suzawa, T. Kitayama, Polym. Bull. 74, 1934-1948 (2017).
  16. "Synthesis of thermo-responsive polymer via radical (co)polymerization of N,N-dimethyl-α-(hydroxymethyl)acrylamide with N,N-diethylacrylamide"
    Y. Kohsaka, Y. Tanimoto, Polymers 2016, 8, 374 (Open Access).

  17. "Synthesis and reaction of block copolymer composed of independently clickable segments via monomer-selective living copolymerization"
    V. Ladelta, Y. Kohsaka, T. Kitayama, Microsystem Tech. in press.
  18. "α-Exomethylene lactone possessing acetal-ester linkage: Polymerization and postpolymerization modification for water-soluble polymer"
    Y. Kohsaka, Y. Matsumoto, T. Zhang, Y. Matsuhashi, T. Kitayama, J. Polym. Sci. Part A: Polym. Chem. 54, 955-961 (2016).     (Spotlight Article)

  19. "α-(Aminomethyl)acrylate: polymerization and spontaneous post-polymerization modification of β-amino acid ester for a pH/temperature-responsive material "
    Y. Kohsaka, Y. Matsumoto, T. Kitayama, Polym. Chem.6, 5026-5029 (2015).

  20. "Termination of living anionic　polymerization of butyl acrylate with α-(chloromethyl)acrylate for end-functionalization and application to the evaluation of monomer reactivity"
    Y. Kohsaka, S. Ishihara, T. Kitayama, Macromol. Chem. Phys. 216, 1534-1539 (2015).
  21. "Stereoregular poly(methyl methacrylate) with double-clickable ω-end: Synthesis and click reaction"
    Y. Kohsaka, K. Yamamoto, T. Kitayama, Polym. Chem. 6, 3601-3607 (2015).     (Inside Cover)

  22. "C60-Containing polymethacrylates: synthesis, properties, and potential application as n-type semiconductor for organic solar cell"
    V. Ladelta, Y. Kohsaka, T. Ohsnishi, M. Matsumura, and T. Kitayama, Polym. Bull. 72, 1265-1280 (2015).
  23. "Stereospecific Anionic Polymerization of α-(Hydroxymethyl)acrylate with Protective Group"
    Y. Kohsaka, K. Suzawa, T. Kitayama, Macromol. Symp. 350, 86-98 (2015).
  24. "Synthesis and post-polymerization reaction of end-clickable stereoregular polymethacrylates via termination of stereospecific living anionic polymerization"
    Y. Kohsaka, T. Kurata, K. Yamamoto, S. Ishihara, T. Kitayama, Polym. Chem. 6, 1078-1087 (2015).　

  25. “Anionic alternating copolymerization of alpha-arylacrylates with methyl methacrylate: effect of monomer sequence on fluorescence”
    Y. Kohsaka, E. Yamaguchi, T. Kitayama, J. Polym. Sci. Part A: Polym. Chem. 52, 2806-2814 (2014).　


  26. “Stimuli-degradable cross-linked polymers synthesized by radical polymerization using a size-complementary [3]rotaxane cross-linker”　
    K. Iijima, Y. Kohsaka, Y. Koyama, K. Nakazono, S. Uchida, S. Asai, T. Takata, Polym. J. 46, 67-72 (2014).　
  27. “End-functional stereoregular poly(methyl methacrylate) with clickable C=C bonds: Facile synthesis and thiol?ene reaction”
    Y. Kohsaka, T. Kurata, T. Kitayama, Polym. Chem. 4, 5043-5047 (2013). 　

  28. “Photo-degradable cross-linked polymer derived from a vinylic rotaxane cross-linker possessing aromatic disulfide axle”
    Y. Koyama, T. Yoshii, Y. Kohsaka, T. Takata, Pure Appl. Chem. 85, 835-842 (2013). 　
  29. “Graft polyrotaxane: A new class of graft copolymer with mobile graft chains”
    Y. Kohsaka, Y. Koyama, T. Takata, Angew. Chem. Int. Ed. 50, 10417-10420 (2011).　     (Introduced by Chemistry World Magazine 2011)

  30. “Size-complementary rotaxane cross-link for stabilization and degradation of supramolecular network”
    Y. Kohsaka, K. Nakazono, Y. Koyama, S. Asai, T. Takata, Angew. Chem. Int. Ed. 50, 4872-4875 (2011).　     (Intoroduced by NPG Asia Materials 2011)

  31. “An efficient synthetic entry to rotaxanes utilising reversible cleavage of aromatic disulphide bonds”
    T. Yoshii, Y. Kohsaka, T. Moriyama, T. Suzuki, Y. Koyama, T. Takata, Supramol. Chem. 23, 65-68 (2011).　
  32. “Synthesis of a main chain-type polyrotaxane consisting of poly(crown ether) and dumbbell sec-ammonium salt and its application to polyrotaxane network”
    Y. Kohsaka, G. Konishi, T. Takata, Polym. J. 39, 861-873 (2007). 　
  33. “Main chain-type polyrotaxane with controlled ratio of rotaxanated units”
    T. Takata, Y. Kohsaka, G. Konishi, Chem. Lett. 36, 292-293 (2007).　

  1. "Degradable and curable poly(conjugated ester)s prepared by acryl- and conjugate-substitutions of the ‘smallest’ monomer"
    Y. Kohsaka, K. Nagai, Eur. Polym. J. 2020, in press (doi: 10.1016/j.eurpolymj.2020.110049)
  2. "Divergence of polycondensation by a tandem reaction based on sequential conjugate substitutions"
    K. Hagiwara, Y. Kohsaka, Polym. Chemistry. 2020, in press (doi: 10.1039/D0PY00648C)
  3. "End-reactive poly(tetrahydrofuran) for functionalization and graft copolymer synthesis via a conjugate substitution reaction"
    Y. Kohsaka, N. Nagatsuka, Polym. J. in press (doi: 10.1038/s41428-019-0258-4)
  4. "Synthesis of Poly(Conjugated Ester)s by Ring-Opening Polymerization of Cyclic Hemiacetal Ester Bearing Acryl Skeleton"
    Y. Kohsaka, M. Yamashita, Y. Matsuhashi, S. Yamashita, Eur. Polym. J. in press (doi:/10.1016/j.eurpolymj.2019.08.012)
  5. "Synthesis and properties of polyethers containing 1,3-butadiene skeleton in the backbones"
    Y. Kohsaka, A. Hiramatsu, Chem. Lett. in press.(10.1246/cl.190381).

  6. "Radical Polymerization of ‘Dehydroaspirin’ with a Formation of Hemiacetal Ester Skeleton: A Hint for Recyclable Vinyl Polymers"
    A. Kazama, Y. Kohsaka, Polym. Chem. 10, 2764-2768 (2019) (10.1039/C9PY00474B) (Inside Cover).
  7. "Conjugate substitution and addition of α-substituted acrylate: a highly efficient, facile, convenient, and versatile approach to fabricate degradable polymers "
    Y. Kohsaka, T. Miyazaki, K. Hagiwara, Polym. Chem. in press (DOI:10.1039/C7PY02114C). (Invited as Emerging Innovators)

  8. "Bifunctional Acyl-1,2,4-triazole: An Alternative Monomer of Dicarbonyl Chloride for Metal- and Halogen-Free Polyester Synthesis"
    Y. Kohsaka, K. Homma, I. Mori, S. Sugiyama, Y. Kimura, Chem. Lett, acceptted.

  9. "Esterification with aromatic acyl-1,2,4-triazole catalyzed by weak base at the rate comparable to acyl chloride"
    Y. Kohsaka, K. Homma, S. Sugiyama, Y. Kimura, Chem. Lett, acceptted.

  10. "Acid- or photo-cleavable polyrotaxane: Subdivision of supramolecular main-chain type polyrotaxane structure induced by acidolysis or photolysis"
    J. Araki, Y. Honda, Y. Kohsaka, Polymer, 25, 134-137 (2017).

  11. "Anionic polymerization of ethyl acrylate initiated by tetrabutylammonium azide: direct synthesis of end-clickable polyacrylate"
    Y. Kataoka, Y. Kohsaka, T. Kitaura, S. Domae, S. Ishihara, T. Kitayama, Polym. Chem. 8, 3858-3861 (2017). (Front Cover)

  12. "Polymerization of α-(Halomethyl)acrylates through Sequential Nucleophilic Attack of Dithiols using a Combination of Addition–Elimination and Click Reactions"
    Y. Kohsaka, K. Hagiwara, K. Ito, Polym. Chem. 8, 976-979 (2017).

  13. "Synthesis of isotactic poly[α-(hydroxymethyl)acrylate] by anionic polymerization of the protected monomer"
    Y. Kohsaka, K. Yamamoto, K. Suzawa, T. Kitayama, Polym. Bull. 74, 1934-1948 (2017).
  14. "Synthesis of thermo-responsive polymer via radical (co)polymerization of N,N-dimethyl-α-(hydroxymethyl)acrylamide with N,N-diethylacrylamide"
    Y. Kohsaka, Y. Tanimoto, Polymers 2016, 8, 374 (Open Access).

  15. "Synthesis and reaction of block copolymer composed of independently clickable segments via monomer-selective living copolymerization"
    V. Ladelta, Y. Kohsaka, T. Kitayama, Microsystem Tech. in press.
  16. "α-Exomethylene lactone possessing acetal-ester linkage: Polymerization and postpolymerization modification for water-soluble polymer"
    Y. Kohsaka, Y. Matsumoto, T. Zhang, Y. Matsuhashi, T. Kitayama, J. Polym. Sci. Part A: Polym. Chem. 54, 955-961 (2016).     (Spotlight Article)

  17. "α-(Aminomethyl)acrylate: polymerization and spontaneous post-polymerization modification of β-amino acid ester for a pH/temperature-responsive material "
    Y. Kohsaka, Y. Matsumoto, T. Kitayama, Polym. Chem.6, 5026-5029 (2015).

  18. "Termination of living anionic　polymerization of butyl acrylate with α-(chloromethyl)acrylate for end-functionalization and application to the evaluation of monomer reactivity"
    Y. Kohsaka, S. Ishihara, T. Kitayama, Macromol. Chem. Phys. 216, 1534-1539 (2015).
  19. "Stereoregular poly(methyl methacrylate) with double-clickable ω-end: Synthesis and click reaction"
    Y. Kohsaka, K. Yamamoto, T. Kitayama, Polym. Chem. 6, 3601-3607 (2015).     (Inside Cover)

  20. "C60-Containing polymethacrylates: synthesis, properties, and potential application as n-type semiconductor for organic solar cell"
    V. Ladelta, Y. Kohsaka, T. Ohsnishi, M. Matsumura, and T. Kitayama, Polym. Bull. 72, 1265-1280 (2015).
  21. "Stereospecific Anionic Polymerization of α-(Hydroxymethyl)acrylate with Protective Group"
    Y. Kohsaka, K. Suzawa, T. Kitayama, Macromol. Symp. 350, 86-98 (2015).

  22. "Synthesis and post-polymerization reaction of end-clickable stereoregular polymethacrylates via termination of stereospecific living anionic polymerization"
    Y. Kohsaka, T. Kurata, K. Yamamoto, S. Ishihara, T. Kitayama, Polym. Chem. 6, 1078-1087 (2015).　

  23. “Anionic alternating copolymerization of alpha-arylacrylates with methyl methacrylate: effect of monomer sequence on fluorescence”
    Y. Kohsaka, E. Yamaguchi, T. Kitayama, J. Polym. Sci. Part A: Polym. Chem. 52, 2806-2814 (2014).　


  24. “Stimuli-degradable cross-linked polymers synthesized by radical polymerization using a size-complementary [3]rotaxane cross-linker”　
    K. Iijima, Y. Kohsaka, Y. Koyama, K. Nakazono, S. Uchida, S. Asai, T. Takata, Polym. J. 46, 67-72 (2014).　
  25. “End-functional stereoregular poly(methyl methacrylate) with clickable C=C bonds: Facile synthesis and thiol?ene reaction”
    Y. Kohsaka, T. Kurata, T. Kitayama, Polym. Chem. 4, 5043-5047 (2013). 　

  26. “Photo-degradable cross-linked polymer derived from a vinylic rotaxane cross-linker possessing aromatic disulfide axle”
    Y. Koyama, T. Yoshii, Y. Kohsaka, T. Takata, Pure Appl. Chem. 85, 835-842 (2013). 　
  27. “Graft polyrotaxane: A new class of graft copolymer with mobile graft chains”
    Y. Kohsaka, Y. Koyama, T. Takata, Angew. Chem. Int. Ed. 50, 10417-10420 (2011).　     (Introduced by Chemistry World Magazine 2011)

  28. “Size-complementary rotaxane cross-link for stabilization and degradation of supramolecular network”
    Y. Kohsaka, K. Nakazono, Y. Koyama, S. Asai, T. Takata, Angew. Chem. Int. Ed. 50, 4872-4875 (2011).　     (Intoroduced by NPG Asia Materials 2011)

  29. “An efficient synthetic entry to rotaxanes utilising reversible cleavage of aromatic disulphide bonds”
    T. Yoshii, Y. Kohsaka, T. Moriyama, T. Suzuki, Y. Koyama, T. Takata, Supramol. Chem. 23, 65-68 (2011).　
  30. “Synthesis of a main chain-type polyrotaxane consisting of poly(crown ether) and dumbbell sec-ammonium salt and its application to polyrotaxane network”
    Y. Kohsaka, G. Konishi, T. Takata, Polym. J. 39, 861-873 (2007). 　
  31. “Main chain-type polyrotaxane with controlled ratio of rotaxanated units”
    T. Takata, Y. Kohsaka, G. Konishi, Chem. Lett. 36, 292-293 (2007).　
 
   
  1. "Polyrotaxane netwrok as a topologically cross-linked polymer: Synthesis and properties" In "Supramolecular Polymer Chemistry (Ed. by A. Harada)", T. Takata, T. Arai, Y. Kohsaka, M. Shioya, Y. Koyama, pp.331-346 (2012), Wiley-VCH.