Photosynergetic Amplification of Radiation Input: from Efficient UV Induced Cycloreversion to Sensitive X-ray Detection
2020
Five photochromic terarylenes which show reversible photocyclisation and cycloreversion with relatively high quantum yields are presented. Some of these have been observed to undergo a highly efficient cycloreversion cascade process from their coloured, closed forms to their uncoloured open forms that leads to cycloreversion quantum yields significantly larger than unity. This cascade effect can been induced with both chemical and X-ray initiation; the limits of detection from X-Ray initiation has been tested and is comparable to existing systems with detection observed at values as low as 0.3 mGy
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