Charge and proton transfer reactions in the excited states of organic dyes can be coupled in
many different ways. Despite the complementarity of charges, they can occur on different …

As a typical class of excited-state intramolecular proton transfer (ESIPT) molecules, 3-
hydroxyflavone derivatives (3HF, also known as flavonols) have received much attention …

A new sensing mechanism based on CN isomerization, which shows a very significant
fluorescence enhancement to the metal cations in a simple and efficient way, is …

Excited-state intramolecular proton transfer (ESIPT) in 3-hydroxyflavone dyes allows us to
record, in addition to common spectroscopic parameters, the positions of absorption (νabs) …

Can polarity-sensitive fluorescent dyes monitor the response of live cells to fundamental
stress conditions, such as deprivation from nutrition and oxidative stress? To address this …

Internal Stark effect (or internal electrochromy) consists of the shift of light absorption and
emission bands under the influence of electric field produced by proximal charges. In the …

3-Hydroxychromones (3HCs) are fluorescent dyes, which respond to solvent perturbations
by shifts and changes in the relative intensity of the two well-separated bands in the …

There is an urgent need for point-of-care tuberculosis (TB) diagnostic methods that are fast,
inexpensive, and operationally simple. Here, we report on a bright solvatochromic dye …

A new highly selective, reversible, chromogenic, and fluorogenic chemosensor (4) based on
thiazole–coumarin moieties for quantification of copper ions in aqueous-DMSO was …

hydroxyflavone (3-HF) derivatives are very attractive fluorescence sensors due to their ability
to respond to small changes in their microenvironment via a dramatic alteration of the …