Underfill and mold compounds including siloxane-based aromatic diamines

A method comprising:

• introducing a composition comprising a siloxane-based aromatic diamine in a flowable state between a first substrate comprising a first set of contact points and a second substrate comprising a second set of contact points coupled to the first substrate through interconnections between a portion of the first set of contact points and a portion of the second set of contact points;
• and
• curing the composition,
• wherein the siloxane-based aromatic diamine has a formula:
• wherein groups R1 and R2 are independently selected from a group consisting of hydrogen, an alkyl, a substituted alkyl, an aryl, a substituted aryl moiety, and an —OR7 moiety, wherein R7 is selected from a group consisting of an aliphatic and an aromatic moiety,
• wherein groups R3, R4, R5, and R6 are independently selected from a group consisting of hydrogen, an alkyl, a substituted alkyl, a cycloaliphatic, an alkyl ether, an aryl, and a substituted aryl moiety, except that groups R3, R4, R5 and R6 cannot each be a hydrogen, and
• wherein groups R8 and R9 are independently selected from a group consisting of hydrogen, an aliphatic, and an aromatic moiety.