Berlin 2018 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 1: Focus: Molecularly Functionalized Low-Dimensional Systems I - organized by Antonio Setaro, Carola Meyer, Aravind Vijayaraghvan and Matteo Mannini

CPP 1.1: Topical Talk

Montag, 12. März 2018, 09:30–10:00, C 130

Diameter-dependent optical absorption and energy transfer from encapsulated dye molecules to single wall carbon nanotubes — •Sofie Cambré¹, Stein van Bezouw¹, Jochen Campo¹, Joeri Defillet¹, Wim Wenseleers¹, Dylan H. Arias², Rachelle Ihly², Andrew J. Ferguson², Justin C. Johnson², and Jeffrey L. Blackburn² — ¹Physics Department, University of Antwerp, Antwerp, Belgium — ²Chemistry & Nanoscience Center, National Renewable Energy Laboratory, Golden Colorado, USA

The hollow core and well-defined diameters of single-walled carbon nanotubes (SWCNTs) allow for creation of unique one-dimensional hybrid structures by encapsulation of various molecules.[1] Here, we show that the optical properties of dye molecules encapsulated in SWCNTs can be strongly modulated by the SWCNT diameter, indicating very specific diameter-dependent stacking and interactions of the molecules. The filling is thoroughly characterized by optical absorption, resonant Raman, and two-dimensional infrared photoluminescence excitation (PLE) spectroscopy. Energy transfer probed by PLE spectroscopy shows the absorption spectrum of the dyes to be strongly diameter-dependent. The design of these functional hybrid systems, with tuneable dye absorption demonstrates potential for implementation in dedicated photo-conversion devices.

[1] S. Cambré, J. Campo et al., Nature Nanotechnol. 10, 248 (2015).