Fig. 2: Growth rate comparisons and appearance of heterostructures 0.5 M NaCl vs 1.0 M NaCl in block B.

a UV–Vis absorbance and (b) thickness of [(PDADMA/Ti3C2Tz)2/(PDADMA/PSS)2]x heterostructures with either 0.5 M NaCl or 1.0 M NaCl in block B. Digital photographs of [(PDADMA/Ti3C2Tz)2/(PDADMA/PSS)2]x with 0.5 M NaCl in block B heterostructures at various “x”/LbL cycles on (c) glass and (d) Si substrates. Digital photographs of [(PDADMA/Ti3C2Tz)2/(PDADMA/PSS)2]x with 1.0 M NaCl in block B heterostructures at various “x”/LbL cycles on (e) glass and (f) Si substrates.