Issue 97, 2023

meta-Fluorophores: an uncharted ocean of opportunities

Abstract

meta-Fluorophores (MFs) are unique ultra-light (in terms of molecular weight (MW)) fluorophores exhibiting luminescence with a wide colour gamut ranging from blue to the NIR. Single benzenic MFs are easy to synthesize, are quite bright (with photoluminescence quantum yield (PLQY) as high as 63%) and exhibit very large Stokes shift (as high as 260 nm (8965 cm−1)), with large solvatochromic shift (as high as 175 nm), and very long excited-state-lifetime (as high as 26 ns) for such ultra-light fluorophores. An emission maximum of ≥600 nm has been achieved with an MF in a polar medium having a MW of only 177 g mol−1 and in a nonpolar medium having MW of only 255 g mol−1; therefore, a large-sized π-conjugated para-fluorophore is no longer a prerequisite for red/NIR emission. Structurally varied MFs pave the way for creating an ocean of opportunities and are thus promising for replacing para-fluorophores for different applications, ranging from bioimaging to LEDs.

Graphical abstract: meta-Fluorophores: an uncharted ocean of opportunities

Article information

Article type
Feature Article
Submitted
26 Aug. 2023
Accepted
16 Okt. 2023
First published
17 Okt. 2023

Chem. Commun., 2023,59, 14370-14386

meta-Fluorophores: an uncharted ocean of opportunities

T. Chatterjee, M. Mandal, S. Mardanya, M. Singh, A. Saha, S. Ghosh and P. K. Mandal, Chem. Commun., 2023, 59, 14370 DOI: 10.1039/D3CC04182D

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