Design of high efficiency for two-photon polymerization initiator

Combination of radical stabilization and large two-photon cross-section achieved by N-benzyl 3,6-bis(phenylethynyl)carbazole derivatives

Jin Feng Xing, Wei Qiang Chen, Jie Gu, Xian Zi Dong, Nobuyuki Takeyasu, Takuo Tanaka, Xuan Ming Duan, Satoshi Kawata

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Novel A-π-D-π-A V-shaped 3,6-bis(phenylethynyl)carbazole based chromophores were designed and synthesized as two-photon polymerization (TPP) initiators combining a large two-photon absorption cross-section with facilitated radical formation. 9-Benzyl-3,6-bis(4-nitrophenylethynyl)carbazole (4d) shows a strong two-photon absorption around 800 nm and exhibits very high two-photon polymerization initiating sensitivity with a threshold power of 0.8 mW at the concentration of 0.18 mol%, which is much lower than the threshold power of 6.37 mW found for benzil. The corresponding threshold of laser exposure intensity for TPP is 3.0 × 107 mJ cm-2. The lowest loading of 4d is up to 0.012 mol% with a threshold power of 3.2 mW.

Original languageEnglish
Pages (from-to)1433-1438
Number of pages6
JournalJournal of Materials Chemistry
Volume17
Issue number14
DOIs
Publication statusPublished - Jan 1 2007
Externally publishedYes

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Photons
Stabilization
Polymerization
Derivatives
Chromophores
carbazole
Lasers

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Cite this

Design of high efficiency for two-photon polymerization initiator : Combination of radical stabilization and large two-photon cross-section achieved by N-benzyl 3,6-bis(phenylethynyl)carbazole derivatives. / Xing, Jin Feng; Chen, Wei Qiang; Gu, Jie; Dong, Xian Zi; Takeyasu, Nobuyuki; Tanaka, Takuo; Duan, Xuan Ming; Kawata, Satoshi.

In: Journal of Materials Chemistry, Vol. 17, No. 14, 01.01.2007, p. 1433-1438.

Research output: Contribution to journalArticle

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abstract = "Novel A-π-D-π-A V-shaped 3,6-bis(phenylethynyl)carbazole based chromophores were designed and synthesized as two-photon polymerization (TPP) initiators combining a large two-photon absorption cross-section with facilitated radical formation. 9-Benzyl-3,6-bis(4-nitrophenylethynyl)carbazole (4d) shows a strong two-photon absorption around 800 nm and exhibits very high two-photon polymerization initiating sensitivity with a threshold power of 0.8 mW at the concentration of 0.18 mol{\%}, which is much lower than the threshold power of 6.37 mW found for benzil. The corresponding threshold of laser exposure intensity for TPP is 3.0 × 107 mJ cm-2. The lowest loading of 4d is up to 0.012 mol{\%} with a threshold power of 3.2 mW.",
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AU - Chen, Wei Qiang

AU - Gu, Jie

AU - Dong, Xian Zi

AU - Takeyasu, Nobuyuki

AU - Tanaka, Takuo

AU - Duan, Xuan Ming

AU - Kawata, Satoshi

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AB - Novel A-π-D-π-A V-shaped 3,6-bis(phenylethynyl)carbazole based chromophores were designed and synthesized as two-photon polymerization (TPP) initiators combining a large two-photon absorption cross-section with facilitated radical formation. 9-Benzyl-3,6-bis(4-nitrophenylethynyl)carbazole (4d) shows a strong two-photon absorption around 800 nm and exhibits very high two-photon polymerization initiating sensitivity with a threshold power of 0.8 mW at the concentration of 0.18 mol%, which is much lower than the threshold power of 6.37 mW found for benzil. The corresponding threshold of laser exposure intensity for TPP is 3.0 × 107 mJ cm-2. The lowest loading of 4d is up to 0.012 mol% with a threshold power of 3.2 mW.

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