Slip‐stacked J‐aggregate materials for organic solar cells and photodetectors

JH Kim, T Schembri, D Bialas, M Stolte… - Advanced …, 2022 - Wiley Online Library
Dye–dye interactions affect the optical and electronic properties in organic semiconductor
films of light harvesting and detecting optoelectronic applications. This review elaborates …

Expanded theory of H-and J-molecular aggregates: the effects of vibronic coupling and intermolecular charge transfer

NJ Hestand, FC Spano - Chemical reviews, 2018 - ACS Publications
The electronic excited states of molecular aggregates and their photophysical signatures
have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel …

An Efficient Narrowband Near‐Infrared at 1040 nm Organic Photodetector Realized by Intermolecular Charge Transfer Mediated Coupling Based on a Squaraine Dye

JH Kim, A Liess, M Stolte, AM Krause… - Advanced …, 2021 - Wiley Online Library
A highly sensitive short‐wave infrared (SWIR, λ> 1000 nm) organic photodiode (OPD) is
described based on a well‐organized nanocrystalline bulk‐heterojunction (BHJ) active layer …

Exploring the origin of high optical absorption in conjugated polymers

MS Vezie, S Few, I Meager, G Pieridou, B Dörling… - Nature materials, 2016 - nature.com
The specific optical absorption of an organic semiconductor is critical to the performance of
organic optoelectronic devices. For example, higher light-harvesting efficiency can lead to …

Controlling the supramolecular polymerization of squaraine dyes by a molecular chaperone analogue

L Kleine-Kleffmann, V Stepanenko… - Journal of the …, 2023 - ACS Publications
Molecular chaperones are proteins that assist in the (un) folding and (dis) assembly of other
macromolecular structures toward their biologically functional state in a non-covalent …

Polymorphism in Squaraine Dye Aggregates by Self‐Assembly Pathway Differentiation: Panchromatic Tubular Dye Nanorods versus J‐Aggregate Nanosheets

CA Shen, D Bialas, M Hecht, V Stepanenko… - Angewandte …, 2021 - Wiley Online Library
A bis (squaraine) dye equipped with alkyl and oligoethyleneglycol chains was synthesized
by connecting two dicyanomethylene substituted squaraine dyes with a phenylene spacer …

Achieving Ultra‐Narrow‐Band Deep‐Red Electroluminescence By a Soliton‐type Dye Squaraine

W Tan, Y Yu, T Shi, L Zhang, H Gan, B Wang… - Advanced …, 2024 - Wiley Online Library
Due to the soliton‐like electronic structural characteristics, cyanine dyes typically exhibit
spectral behaviors such as large molar extinction coefficients, narrow spectra, and high …

Structural Disorder as the Origin of Optical Properties and Spectral Dynamics in Squaraine Nano-Aggregates

R Bernhardt, M Manrho, J Zablocki… - Journal of the …, 2022 - ACS Publications
In contrast to regular J-and H-aggregates, thin film squaraine aggregates usually have
broad absorption spectra containing both J-and H-like features, which are favorable for …

Time-resolved circular dichroism of excitonic systems: Theory and experiment on an exemplary squaraine polymer

L Ress, P Malý, JB Landgraf, D Lindorfer, M Hofer… - Chemical …, 2023 - pubs.rsc.org
Experimental and theoretical foundations for femtosecond time-resolved circular dichroism
(TRCD) spectroscopy of excitonic systems are presented. In this method, the system is …

Extended-charge-transfer excitons in crystalline supramolecular photocatalytic scaffolds

NJ Hestand, RV Kazantsev… - Journal of the …, 2016 - ACS Publications
Coupling among chromophores in molecular assemblies is responsible for phenomena
such as resonant energy transfer and intermolecular charge transfer. These processes are …