In the present communication,
we have investigated the interaction
between a biomembrane component 1,2-dioleoyl-
sn
-glycero-3-phosphocholine
(DOPC) and a coagulating protein protamine sulfate (PS) using the
Langmuir–Blodgett (LB) technique. The π–
A
isotherm, π–
t
characteristics,
and analysis of isotherm curves suggested that PS strongly interacted
with DOPC, affecting the fluidity of the DOPC layer. Electrical characterization
indicates that PS as well as the PS–DOPC film showed resistive
switching behavior suitable for Write Once Read Many (WORM) memory
application. Trap-controlled space charge-limited conduction (SCLC)
was the key mechanism behind such observed switching. The presence
of DOPC affected the SCLC process, leading to lowering of threshold
voltage (
V
Th
), which is advantageous in
terms of lower power consumption.