The methods for synthesizing 1,8-naphthalimide and its derivatives were narrated in brief, and their application progresses in the fields of fluorescent brightening agent, fluorescent dye and other functional materials in recent years were emphatically introduced, especially the application in the fields of biomedical material and fluorescent sensor.

As a link of material science and analysis chemistry,the study in fluorescent sensor and novel sensor material has received a growing attention with the rapid development of cross subject.

Molecular-based fluorescent sensors have received considerable attentions due to their advantages such as high sensitivities and feasibilities, and have been rapidly developed in recent years.

There has been considerable interest in studying fluorescence sensors because they can be applied to a wide range of analytical tasks, such as clinical diagnosis, bioassay, environmental monitoring, etc.

There has been considerable interest in studying fluorescence sensors and probes, because they can be applied to a wide range of analytical tasks, such as clinical diagnosis, bioassay, environmental monitoring, etc.

Therefore,it is a novel highly selective fluorescence sensor,too.

Because fluoresecent chemosensors had the virtues of high sensitivity,high selectivity,good facility and so on,the research on fluorescent chemosensors for metal ion was very meaningful for life chemistry and environmental chemistry.