Water can release protons when electrolyzed at 2.0 V, leading to the increase of acidity on anode.Therefore, DMT protecting group can be removed.

• 在2.；0V电解电位下电解水，释放氢离子并富集于阳极极板附近，导致局部酸度增强，使核酸单体分子发生脱保护反应。