Provided herein are fluorophore compounds including rhodol and rhodamine compounds which can be used as fluorescent labels and/or fluorogenic probes and methods of making same. Provided also herein are methods that can be used to track, measure, detect, or screen biological species such as protein, DNA, enzyme, antibody, organelle, cell, tissue, drug, hormone, nucleotide, nucleic acid, polysaccharide or lipid in living organisms. Specifically, the methods include the steps of contacting any of the fluorophore compounds, rhodol compounds and rhodamine compounds disclosed herein with the biological species to form one or more fluorescent compounds, and measuring fluorescence properties of the fluorescent compounds. Provided also herein are high-throughput screening fluorescent methods for detecting or screening biological species.