Journal Article

PUBDB-2024-06682

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Early bird or night owl? Controlling the ultrafast photodynamics of triphenylamine substituted 2,2′:6′,2′′-terpyridine

Maroń, A. M. (Corresponding author) ; Cannelli, O. (Corresponding author)XFEL.EU*DESY* ; Socie, E. C.Extern*XFEL.EU* ; Lodowski, P. ; Oppermann, M.Extern*XFEL.EU* ; Machura, B. ; Chergui, M.Extern*XFEL.EU*

2024
RSC Publ. Cambridge

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Please use a persistent id in citations: doi:10.1039/D3CP04492K  doi:10.3204/PUBDB-2024-06682

Abstract: Controlling the ultrafast photodynamics of metal-free organic molecules has great potential for technological applications. In this work, we use solvent polarity and viscosity as “external knobs” to govern the photodynamics of an electron-donating derivative of 2,2′:6′,2′′-terpyridine (terpy), namely 4′-(4-(di(4-tert-butylphenyl)amine)phenyl)-2,2′:6′,2′′-terpyridine (tBuTPAterpy). We combine femtosecond fluorescence upconversion (FlUC), transient absorption (TA) and quantum mechanical calculations to provide a comprehensive description of the tBuTPAterpy's photodynamics. Our results demonstrate that, by changing the solvent, the time scale of light-induced conformational changes of the system can be tuned over two orders of magnitude, controlling the tBuTPAterpy fluorescence spectral region and yield. As a result, depending on the local environment, tBuTPAterpy can act either as an “early bird” or a “night owl”, with a tunability that makes it a promising candidate for metal-free sensors.

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Contributing Institute(s):

1. Attosecond Science and Technology (FS-ATTO)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. DYNAMOX - Charge carrier dynamics in metal oxides (695197) (695197)
3. CHIRAX - X-ray spectroscopy of molecular chirality in solutions (101095012) (101095012)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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