  Transition metal dichalcogenide (TMD) nanoscrolls (NS) exhibit significant
photoluminescence (PL) signals despite their multilayer structure, which cannot
be explained by the strained multilayer description of NS. Here, we investigate
the interlayer interactions in NS to address this discrepancy. The reduction of
interlayer interactions in NS is attributed to two factors: (1) the
symmetry-broken mixed stacking order between neighbouring layers due to
misalignment, and (2) the high inhomogeneity in the strain landscape resulting
from the unique Archimedean spiral-like geometry with positive eccentricity.
These were confirmed through transmission electron microscopy, field emission
scanning electron microscopy and atomic force microscopy. To probe the effect
of reduction of interlayer interactions in multilayered MoS$_2$ nanoscrolls,
low-temperature PL spectroscopy was employed investigating the behaviour of
K-point excitons. The effects of reduced interlayer interactions on
exciton-phonon coupling (EXPC), exciton energy, and exciton oscillator strength
are discussed, providing insights into the unique properties of TMD
nanoscrolls.
