Preparation of cellulose-based fluorescent materials as coating pigment by use of DMSO/DBU/CO2 system

A series of cellulose-based fluorescent materials are prepared under relative mild conditions by use the DMSO/1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)/CO2 system to utilize as coating pigments. Through observation 365 nm UV light, exhibit good fluorescence response and bright color. Furthermore, due limitation molecular skeleton cellulose, intrinsic aggregation caused quenching phenomenon commonly existed in conventional organic pigments can be effectively inhibited, which is very helpful retain epoxy-based material its films. Moreover, addition also increases mechanical properties film. The increase tensile strength modulus respectively reaches ~39% ~66%. Solvent resistance thermal property films generally remain unchanged. fabrication DMSO/DBU/CO2 provides a feasible way develop functional application cellulose. Graphic abstract