Evaluation of poly(n-butyl methacrylate) as an alternative support for graphene transfer: Characterizations and performances

In this study, we evaluated poly(n-butyl methacrylate) (PnBMA) as a promising alternative to traditionally used poly(methyl methacrylate) (PMMA) for graphene transfer. We synthesized PnBMA on laboratory condition and characterized it using Raman spectroscopy and ¹H NMR, confirming its molecular structure. Transfer of graphene was performed using PnBMA and the results were compared with PMMA transfer. Raman analyses and I D /I G mappings revealed that graphene transferred with PnBMA exhibits superior uniformity and fewer defects induced by the transfer process. This improvement is attributed to PnBMA's structure. These results open promising prospects for the use of PnBMA in graphene transfer applications, potentially improving the quality and uniformity of transferred graphene layers while reducing production costs. This study significantly contributes to the development of more efficient and potentially less expensive methods for graphene transfer, essential for the fabrication of advanced electronic devices based on graphene. • First demonstration of PnBMA for graphene transfer replacing standard PMMA. • Steric hindrance minimized transfer-induced defects – a key limitation of PMMA. • Propose Raman spectroscopy to rigorously characterize PnBMA.