Near-infrared luminescent compound, preparation method thereof and biosensor

The invention provides a near-infrared luminescent compound, a preparation method thereof and a biosensor, the structural general formula (I) of the near-infrared luminescent compound is shown in the specification, in the formula, L11, L12, L21 and L22 are independently selected from a single bond, a double bond, a C6-C30 arylene group, a substituted C6-C30 arylene group, a C3-C30 heteroarylene group or a substituted C3-C30 heteroarylene group; ar11, Ar12, Ar13 and Ar14 are respectively and independently selected from a C6-C30 aryl group, a substituted C6-C30 aryl group, a C3-C30 heteroaryl group or a substituted C3-C30 heteroaryl group. Compared with the prior art, the probe molecular material prepared by the invention has the advantages of high sensitivity, good selectivity, short response time, good membrane permeability, low background noise, capability of directly observing fluorescence and ultraviolet visible spectrums, capability of being applied to cell imaging and living imaging ...