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← ScienceWhich consequence occurs in materials when subjected to intense photobleaching?
A)Reduced fluorescence quantum yield✓
B)Increased triplet state population
C)Enhanced two-photon absorption rates
D)Shift in solvatochromatic behavior
💡 Explanation
Photobleaching causes irreversible damage to fluorescent molecules via photon-induced chemical reactions; the **excited-state deactivation** quenches fluorescence because irreversible structural changes lower quantum yield of emission rather than increase absorption processes.
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