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Photophysical study of Fluorescent Zn (II) Sensor. [Display omitted] • Fluorescence study of the rhodamine-quinoline type of Al3+sensor. • Absorption spectra of rhodamine-based fluorescent Al3+ chemosensor. • Bioimaging study of FRET-based chromium(III) sensor. • HOMO-LUMO structures of rhodamine-based colorimetric Cu(II) sensors. • Fluorescence emission study of rhodamine-based Fe3+chemosensor. • Live cell imaging of Rhodamine-based Hg2+ chemosensor. Rhodamine-based photoresponsive sensors have emerged as a focal point in the realm of chemical sensing, garnering substantial attention owing to their exceptional sensitivity, straightforward implementation, and real-time detection capabilities across diverse analytes. Within this class, a notable substituent stands out for its well-established reputation, characterized by its electron-donating prowess and customizable coordination cavity, resulting in a heightened sensitivity towards various metal ions. The comprehensive examination of these sensors in the review centers on key parameters such as the detection target, detection limit, detection solution system, and detection method. Notably, the inclusion of an array of metal ions in the discussion contributes to the versatility of these sensors. To enhance the readability and applicability of the review, a detailed exploration of the indirect sensing strategy is presented, showcasing its efficacy in achieving sensitive detection, especially for anions and other species. This strategic approach not only broadens the scope of application but also underscores the versatility of rhodamine-based sensors, making this review a valuable resource for researchers and practitioners in the field of chemical sensing. [ABSTRACT FROM AUTHOR]

[Display omitted] • Zebrafish imaging studies of coumarin probe for Cu2+ sensor. • Photophysical studies of coumarin-based Cu2+ fluorescent sensor. • Absorption spectrum of fluorescein probe for Cu2+ ion. • Prokaryotic bioimaging study of pyrene-based Cu2+ sensor. • Carbon dot for rhodamine B-based Cu2+ sensor. Luminescent chemosensors for sensing Cu2+ have attracted a lot of attention in recent years due to their potential applications in biochemistry and environmental research. Based on host-guest interactions include van der Waals forces, hydrophobic contacts, electrostatic forces, coordination between metal ligands, and hydrogen bonds. They were made to allow for the selective detection of different species. It is immediately and easily detectable in biological and environmental systems, and the development of sensitive imaging technologies that can quickly monitor Cu2+ ions has attracted a lot of attention. Due to their inherent sensitivity, selectivity, and the ability for quick, real-time monitoring, they have proven to be helpful instruments for detecting metal ions. Small-molecule fluorescence probes can report on specific analytes in cells and other complex biological specimens by using selective, bio-orthogonal chemistry. The approaches for recognizing Cu2+ ions with small-molecule fluorescent probes are summarised in this article. [ABSTRACT FROM AUTHOR]

• Rhodamine-GFFYE-CS-EE self-assembly to supramolecular hydrogel via the reduction of glutathione (GSH) Cytotoxicity of TRDM-F in human Hela cells. • Ferrocene-rhodamine receptor linked by a pyridine moiety. • Antibacterial activity of the dendrimer by agar diffusion method. • Rheological property of the Rhodamine- C -glycoside. Spirobifluorene (SBF) is one of the most commonly utilized scaffolds in the construction of Organic Semi-Conductors (OSCs) for organic electronics. In the last ten years, new generations of SBF positional isomers have been surfaced in the literature. The various substitution places have enabled the tailoring of important electrical properties for the future construction of materials. These new generations of organic semiconductors have shown great promise to the field of electronics, particularly when utilized as a host material for Thermally Activated Delayed Fluorescence OLEDs. We present these new generations of SBF compounds, as well as the impact of positional isomerism on electrical characteristics and device performance, in this featured article. We show how distinct structural and electrical characteristics drive and can be adjusted to the electrochemical and photophysical properties of SBF regio-isomers. Such research lays the groundwork for organic electronic material design. [Display omitted] [ABSTRACT FROM AUTHOR]