This increases the τ 1 lifetime to 5.2 ps, with quite significant expansion in the C–N–C bond angles required to reach the S 3 /S 2 MECI from the S 4 /S 3 MECI, and then a reversal of the geometry changes required to find the S 2 /S 1 MECI (which is located close to the S 4 /S 3 MECI).
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Excited state dynamics of azanaphthalenes reveal opportunities for the rational design of photoactive molecules.
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