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Main Title: Electronic and Optical Properties of Methylated Adamantanes
Author(s): Rander, Torbjörn
Bischoff, Tobias
Knecht, Andre
Wolter, David
Richter, Robert
Merli, Andrea
Möller, Thomas
Type: Article
Abstract: Recent theoretical work has identified functionalized diamondoids as promising candidates for the tailoring of fluorescent nanomaterials. However, experiments confirming that optical gap tuning can be achieved through functionalization have, up until now, found only systems where fluorescence is quenched. We address this shortcoming by investigating a series of methylated adamantanes. For the first time, a class of functionalized diamondoids is shown to fluoresce in the gas phase. In order to understand the evolution of the optical and electronic structure properties with degree of functionalization, photoelectron spectroscopy was used to map the occupied valence electronic structure, while absorption and fluorescence spectroscopies yielded information about the unoccupied electronic structure and postexcitation relaxation behavior. The resulting spectra were modeled by (time-dependent) density functional theory. These results show that it is possible to overcome fluorescence quenching when functionalizing diamondoids and represent, a significant step toward tailoring the electronic structure of these and other semiconductor particles in a manner suitable to applications.
Subject(s): functionalization
electronic structure
Issue Date: 24-Jul-2017
Date Available: 28-Dec-2021
Language Code: en
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Sponsor/Funder: DFG, 120401550, FOR 1282: Controlling the electronic structure of semiconductor nanoparticles by doping and hybrid formation
Journal Title: Journal of the American Chemical Society
Publisher: American Chemical Society (ACS)
Volume: 139
Issue: 32
Publisher DOI: 10.1021/jacs.7b05150
Page Start: 11132
Page End: 11137
EISSN: 1520-5126
ISSN: 0002-7863
TU Affiliation(s): Fak. 2 Mathematik und Naturwissenschaften » Inst. Optik und Atomare Physik » FG Cluster und Nanokristalle
Appears in Collections:Technische Universität Berlin » Publications

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