SEARCH Articles Figures Tables Activation of substrate Bond polarity Bond polarization Bonding bond polarity Bonding polar bonds Bonding single bonds Non-Activated Bonds Non-bonding Non-polar Non-polar bonds Polar activation Polar activator Polar bonds Polarity of bonds Polarization active Polarization of bonds Polarized bond Polarized bonding Single Substrate Single bonds Single polarized Substrate Bonded Substrate activation Substrate bonding