(Invited) Photoresponsive Multiplexed Carbon Nanotube-Hybrid Nanoscale Devices

Abstract

By synergistically combining the individual properties of more than one nanoscale component, research efforts on hybrid structures assembly and their features represent a key motivation for making future functional nanomaterials. In this regard, we developed different platforms based on the in-solution assembly of classes of molecular materials (organic, inorganic, and biological with promising attributes) to single-walled carbon nanotubes (SWCNTs), employed as building blocks that allow for nanoscale studies to be performed in a variety of research fields.[1-7] In this talk, we will present a one-pot assembly strategy for the construction in aqueous solution of hybrid nanostructures comprising inorganic semiconducting nanoparticles (CdS and PbS) grown on carbon nanotubes templates, and their organization in multiplexed nanoscale devices exhibiting photoinduced electrical response.[8] The electrical response observed suggests different processes within the hybrids, depending on the inorganic material employed, i.e. CdS or PbS. We investigated the behaviour of the hybrids via transient absorption spectroscopy, which further cast light on the different photoresponses of our devices.[8] The strategy we developed is of general applicability for the controlled fabrication of CNT-based multiplexed photoresponsive optoelectronic hybrid systems and devices. [1] Journal of the American Chemical Society, 2016, 138, 2905-2908[2] Angewandte Chemie International Edition, 2019, 2019, 59, 9928-9932[3] Small, 2017, 13, 1603042[4] Advanced Science, 2018, 5, 1800596[5] Chemistry of Materials, 2019, 31, 1537-1542[6] Journal of the American Chemical Society, 2017, 139, 17834-17840[7] Nano Letters, 2018, 18, 4130-4135[8] Submitted