Oxygen Sensing Difluoroboron Dinaphthoylmethane Polylactide.

ABSTRACT: Dual emissive luminescence properties of solid-state difluoroboron β-diketonate-poly(lactic acid) (BF₂bdk-PLA) materials have been utilized as biological oxygen sensors. Dyes with red-shifted absorption and emission are important for multiplexing and in vivo imaging, thus hydroxyl-functionalized dinaphthoylmethane initiators and dye-PLA conjugates BF₂dnm(X)PLA (X = H, Br, I) with extended conjugation were synthesized. The luminescent materials show red-shifted absorbance (~435 nm) and fluorescence tunability by molecular weight. Fluorescence colors range from yellow (~530 nm) in 10 - 12 kDa polymers to green (~490 nm) in 20 - 30 kDa polymers. Room-temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) are present under a nitrogen

SUBMITTER: DeRosa CA 

PROVIDER: S-EPMC4457464 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature