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← ScienceWhich consequence results when mismatch in orbital symmetry hinders pi bond formation in conjugated polymer backbones?
A)Increased oxidative polymerization stability
B)Reduced charge carrier mobility✓
C)Enhanced singlet fission quantum yield
D)Suppressed intersystem crossing efficiency
💡 Explanation
Reduced charge carrier mobility results when orbital mismatch prevents proper pi bond overlap along the polymer, limiting delocalization due to destructive interference. Therefore, mobility decreases, because electron propagation requires continuous orbital overlap, rather than conductivity being enhanced, since orbital coupling diminishes.
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