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Avyansh Katiyar
Avyansh Katiyar
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All phosphorescent molecules go through the following transitions: excited singlet state -> [intersystem crossing] -> excited triplet state. Why
$$\text{excited singlet state}$$ $$\Bigg\downarrow$$
$$\text{[intersystem crossing]}$$
$$\Bigg\downarrow$$
$$\text{ excited triplet state}$$
Why does that spin change always occur, given it’s a “forbidden” transition and, thus, unfavourable and much less likely to take place?

All phosphorescent molecules go through the following transitions: excited singlet state -> [intersystem crossing] -> excited triplet state. Why does that spin change always occur, given it’s a “forbidden” transition and, thus, unfavourable and much less likely to take place?

All phosphorescent molecules go through the following transitions:
$$\text{excited singlet state}$$ $$\Bigg\downarrow$$
$$\text{[intersystem crossing]}$$
$$\Bigg\downarrow$$
$$\text{ excited triplet state}$$
Why does that spin change always occur, given it’s a “forbidden” transition and, thus, unfavourable and much less likely to take place?

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Rusty
Rusty
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Why is a spin change favourable in intersystem crossing?

All phosphorescent molecules go through the following transitions: excited singlet state -> [intersystem crossing] -> excited triplet state. Why does that spin change always occur, given it’s a “forbidden” transition and, thus, unfavourable and much less likely to take place?