4.7 Article

Dual-mode fluorescence switching of photochromic bisthiazolylcoumarin

Journal

CHEMICAL COMMUNICATIONS
Volume 48, Issue 5, Pages 765-767

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cc16516j

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Funding

  1. Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan [471]
  2. Grants-in-Aid for Scientific Research [23655123] Funding Source: KAKEN

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Three new photochromic coumarins were synthesized. Fluorescence of the open form of 7-hydroxy-3,4-bisthiazolyl-coumarin increased to 1400% by changing the pH only slightly from 6.05 to 7.58. This was subsequently quenched to 1.5% of the maximum intensity at the UV photostationary state in water-methanol media.

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