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Peer-reviewedCC BYLight: Advanced Manufacturing

Two-photon photopolymerization directly initiated by spiropyran photochromic molecules

  • Dandan Ge
  • Jean Aubard
  • Erell Bodinier
  • Safi Jradi
  • Stéphanie Lau-Truong
  • Nordin Felidj
  • Renaud Bachelot
  • Anne-Laure Baudrion
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Abstract

Here, we report the ability of spiropyrans to initiate two-photon polymerization (TPP) for the first time in the literature.The comparison and synergies between the spiropyran photochromic molecule of interest, namely 6nitro-BIPS, and well-known photoinitiators of radical photopolymerization have been studied.The spiropyran (SPy) molecule can initiate TPP in the presence of trifunctional acrylic monomers and create true 3D structures.The comparison with Irgacure 819, a well-known Type-I photoinitiator, shows that SPy has a comparable capability for TPP.In addition, the combination of SPy with methyl diethanolamine increased the reactivity of both one-and two-photon polymerizations.In the last section, we discuss which SPy isomer is the active photochromic species capable of generating radicals for initiating two-photon polymerization.

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Cite

BibTeXRIS
BibTeX
@article{ge2026twophoton,
  title = {{Two-photon photopolymerization directly initiated by spiropyran photochromic molecules}},
  author = {Dandan Ge and Jean Aubard and Erell Bodinier and Safi Jradi and Stéphanie Lau-Truong and Nordin Felidj and Renaud Bachelot and Anne-Laure Baudrion},
  journal = {Light: Advanced Manufacturing},
  year = {2026},
  month = sep,
  doi = {10.37188/lam.2023.004},
  url = {https://hal.science/hal-05761554v1},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Two-photon photopolymerization directly initiated by spiropyran photochromic molecules
AU  - Dandan Ge
AU  - Jean Aubard
AU  - Erell Bodinier
AU  - Safi Jradi
AU  - Stéphanie Lau-Truong
AU  - Nordin Felidj
AU  - Renaud Bachelot
AU  - Anne-Laure Baudrion
PY  - 2026
DA  - 2026/09/23
JO  - Light: Advanced Manufacturing
DO  - 10.37188/lam.2023.004
UR  - https://hal.science/hal-05761554v1
AB  - Here, we report the ability of spiropyrans to initiate two-photon polymerization (TPP) for the first time in the literature.The comparison and synergies between the spiropyran photochromic molecule of interest, namely 6nitro-BIPS, and well-known photoinitiators of radical photopolymerization have been studied.The spiropyran (SPy) molecule can initiate TPP in the presence of trifunctional acrylic monomers and create true 3D structures.The comparison with Irgacure 819, a well-known Type-I photoinitiator, shows that SPy has a comparable capability for TPP.In addition, the combination of SPy with methyl diethanolamine increased the reactivity of both one-and two-photon polymerizations.In the last section, we discuss which SPy isomer is the active photochromic species capable of generating radicals for initiating two-photon polymerization.
SN  - 2689-9620
ER  -