Large emergent optoelectronic enhancement in molecularly cross-linked gold nanoparticle nanosheets.

ABSTRACT: A central goal in molecular electronics and optoelectronics is to translate tailorable molecular properties to larger materials and to the device level. Here, we present a method to fabricate molecularly cross-linked, self-assembled 2D nanoparticle sheets (X-NS). Our method extends a Langmuir approach of self-assembling gold nanoparticle (NP) arrays at an air-water interface by replacing the liquid sub-phase to an organic solvent to enable cross-linking with organic molecules, and then draining the sub-phase to deposit films. Remarkably, X-NS comprising conjugated oligophenylene dithiol cross-linkers (HS-(C₆H₄)_n-SH, 1 ≤ n ≤ 3) exhibit increasing conductance with molecule length, ~6 orders of magnitude enhancement in UV-Vis extinction coefficients, and photo

SUBMITTER: Gravelsins S 

PROVIDER: S-EPMC9814044 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature