Probing molecular orientation in corrosion inhibition via a NEXAFS study of benzotriazole and related molecules on Cu(100)

The roles of mercapto, benzene, and methyl groups in the corrosion inhibition of imidazoles on copper: II. Inhibitor–copper bonding

“…Such scenario was recently demonstrated for benzotriazole on copper surfaces [12]; the respective activation barrier for the N-H bond cleavage was calculated to be 1.14 eV on Cu(111) [12], which is significantly larger than the current E * values of thiones, and yet the dissociation was found plausible on more open surfaces and low-coordinated defects [12]. It was also observed experimentally that the H1 atom of benzotriazole is removed upon chemisorption on copper surfaces, including the Cu(111), even under ultra-high-vacuum conditions [23,46,[79][80][81]. On this basis, we can reasonably conclude that the current-mercapto molecules should exist in dehydrogenated (deprotonated) thiolate form on Cu(111).…”

Review on copper chemical–mechanical polishing (CMP) and post-CMP cleaning in ultra large system integrated (ULSI)—An electrochemical perspective

“…benzotriazole, BTA) in acidic solutions was suggested [23,27,30,31]. Addition of BTA results in the formation of tightly adherent Cu-BTA protective layer film at the metal surface [32][33][34][35][36][37][38], which blocks copper surface removal, leading to a decrease in copper dissolution rate. Many authors [23,27,30,39] indicated that this protective layer may posses the characteristics of a passive oxide film during CMP process: a removal of copper-inhibitor film from the surface of the copper during CMP would result in an active dissolution of bare copper sites.…”

A quartz crystal microbalance study of the kinetics of interaction of benzotriazole with copper

“…It has also been reported to inhibit the corrosion of iron [26][27][28], cobalt [29], zinc [30], and nickel [28] and to enhance the resistance of tin bronze to oxidation in air [31]. The remarkable inhibiting efficiency of BTAH is attributed to adsorption [32][33][34] and complex formation [34][35][36][37][38], i.e.,…”