The Impact of Aggregation on the Photophysics of Spiro-Bridged Heterotriangulenes

Krug M, Wagner M, Schaub TA, Zhang WS, Schüßlbauer C, Ascherl JDR, Münich PW, Schroeder RR, Gröhn F, Dral PO, Barbatti M, Guldi DM, Kivala M (2020)

Publication Type: Journal article

Publication year: 2020

Journal

DOI: 10.1002/anie.202003504

Abstract

We report on the impact of the central heteroatom on structural, electronic, and spectroscopic properties of a series of spirofluorene-bridged heterotriangulenes and provide a detailed study on their aggregates. The in-depth analysis of their molecular structure by NMR spectroscopy and X-ray crystallography was further complemented by density functional theory calculations. With the aid of extensive photophysical analysis the complex fluorescence spectra were deconvoluted showing contributions from the peripheral fluorenes and the heteroaromatic cores. Beyond the molecular scale, we examined the aggregation behavior of these heterotriangulenes in THF/H2O mixtures and analyzed the aggregates by static and dynamic light scattering. The excited-state interactions within the aggregates were found to be similar to those found in the solid state. A plethora of morphologies and superstructures were observed by scanning electron microscopy of drop-casted dispersions.

Authors with CRIS profile

Involved external institutions

Ruprecht-Karls-Universität Heidelberg Germany (DE) Xiamen University China (CN) Aix-Marseille University / Aix-Marseille Université France (FR)

How to cite

APA:

Krug, M., Wagner, M., Schaub, T.A., Zhang, W.-S., Schüßlbauer, C., Ascherl, J.D.R.,... Kivala, M. (2020). The Impact of Aggregation on the Photophysics of Spiro-Bridged Heterotriangulenes. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202003504

MLA:

Krug, Marcel, et al. "The Impact of Aggregation on the Photophysics of Spiro-Bridged Heterotriangulenes." Angewandte Chemie International Edition (2020).

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