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EACON 2020

EurAsian Conference on Nanophotonics

April 6 – 9, 2020 / Jena, Germany

Martin Presselt

Leibniz Institute of Photonic Technology (IPHT), 07745 Jena, Germany

Supramolecular Control of Optical and Electronical Properties of Two-Dimensional Dye Layers

Supramolecular structures essen¬tially de¬ter¬mine photonic1 and elec¬tro¬nic ma¬terial properties.[1] To control supramolecular structures, we utilize interface assembly of amphiphilic dyes, essentially via the Langmuir-Blodgett (LB) technique, to yield well-de¬fined layers and their stacks with tailored optoelectronic properties. We demonstrate how different condensed phases can be accessed and how their intermolecular binding energies can be characterized via LB, respectively.[2] The LB as well as self-assembled monolayers are characterized optically via photothermal deflection spectroscopy[3] and electronically via square wave voltammetry[4]. Using the latter technique we were able to show that via supramolecular tuning the LUMO energy of fullerene films can be significantly shifted by 90 meV as compared to standard spin cast films (cf. 40 meV shift when changing from C60 to C70).[4] This LUMO energy shift was successfully translated to 70 mV variation in open circuit voltage of corresponding pi-Si-hybrid solar cells.[4]

Figure 1. (a) fullerene layers assembled via interface assembly; (b) thin molecular layer produced via the Langmuir-Blodgett (LB) technique; (c) LB isotherms of amphiphilic thiazole dyes with varied linker lengths yielding different condensed phases of the Langmuir layers

[1] S. Das and M. Presselt, Journal of Materials Chemistry C 2019, 7, 6194-6216.
[2] a) M. L. Hupfer, M. Kaufmann, F. Herrmann-Westendorf, T. Sachse, L. Roussille, K. H. Feller, D. Weiss, V. Deckert, R. Beckert, B. Dietzek and M. Presselt, ACS Appl Mater Interfaces 2017, 9, 44181-44191; b) M. L. Hupfer, M. Kaufmann, S. May, J. Preiss, D. Weiss, B. Dietzek, R. Beckert and M. Presselt, Phys Chem Chem Phys 2019, 21, 13241-13247.
[3] M. L. Hupfer, F. Herrmann-Westendorf, M. Kaufmann, D. Weiss, R. Beckert, B. Dietzek and M. Presselt, Chemistry 2019, 25, 8630-8634.
[4] S. Das, J. Preiß, J. Plentz, U. Brückner, M. von der Lühe, O. Eckardt, A. Dathe, F. H. Schacher, E. Täuscher, U. Ritter, A. Csáki, G. Andrä, B. Dietzek and M. Presselt, Advanced Energy Materials 2018, 8, 1801737.

Further Talks

Andrea Csáki

Microfludic Synthesis of plasmonic Nanoparticles for Sensing Applications

Andrey Turchanin

Controlled growth of transition metal dichalcogenide monolayers for applications in nanoelectronic and nanophotonic devices

Chi Chen

Near Field Spectroscopic Imaging: from Hard to Soft Materials

Chi-How Peng

Cobalt mediated controlled/living radical polymerization: from mechanism understanding to materials application

Chun-Hong Kuo

Bridging Energy and Chemistry via Nanoarchitectonic Engineering at Atomic Scale

Falk Eilenberger

Integration of two-dimensional materials in optical systems for nonlinear optics, sensing, and single photon sources

Frank Setzpfandt

Nonlinear frequency conversion in nanostructured optical systems for application in quantum photonics

Heng-Liang Wu

Controlling the Oxidation State of Cu Electrode and Reaction Intermediates for Electrochemical CO2 Reduction to Ethylene

Kien-Voon Kong

Direct Observation of Reaction Intermediates of Metal-based Therapeutic Agents in Single Living Cell Using TERS

Maria Wächtler

Quantum confined semiconductor nanostructures in light-driven catalysis

Martin Presselt

Supramolecular Control of Optical and Electronical Properties of Two-Dimensional Dye Layers

Po-Chiao Lin

New Environment Sensitive Fluorophores with Color-Tailored Emission: In Vivo Monitoring of Carbonic Anhydrases Expression on Growth of Larval Zebrafish

Shangjr (Felix) Gwo

Plasmonic Metasurface-Enhanced Linear and Nonlinear Processes in Two-Dimensional Semiconductors

Ta-Jen Yen

Empowering Bilayer MoS2 by Engineered Plasmonic Nanostructures for Optoelectronic Applications

Tiow-Gan Ong

Carbodicarbene, Carbogenic Maverick, Not a Moderate!

Volker Deckert

Plasmon Enhanced Probe Spectroscopies – Structural Investigation of Nanoscale Objects

Yi-Tsu Chan

Molecular self-assembly methodology for rational construction of metallosupramolecules with high structural complexity

Yian Tai

Toward a universal polymeric material for electrode buffer layers in organic optoelectronics

Yu-Chieh Cheng

Kirigami-based soft robots with light-responsive properties

Yu-Jung Lu

Controlling Light-matter Interactions at Nanoscale with Plasmonics: From Spontaneous Emission to Lasing