TY - JOUR
T1 - Dual-emissive difluoroboron naphthyl-phenyl β-diketonate polylactide materials
T2 - Effects of heavy atom placement and polymer molecular weight
AU - Samonina-Kosicka, Jelena
AU - Derosa, Christopher A.
AU - Morris, William A.
AU - Fan, Ziyi
AU - Fraser, Cassandra L.
PY - 2014/6/10
Y1 - 2014/6/10
N2 - Luminescent materials are important for imaging and sensing. Aromatic difluoroboron β-diketonate complexes (BF2bdks) are classic fluorescent molecules that have been explored as photochemical reagents, two-photon dyes, and oxygen sensors. A series of BF2bdks with naphthyl and phenyl groups was synthesized, and photophysical properties were investigated in both methylene chloride and poly(lactic acid) (PLA). Polymer molecular weight and dye attachment site along with bromide heavy atom placement were varied to tune optical properties of dye-PLA materials. Systems without heavy atoms have long phosphorescence lifetimes, which is useful for lifetime-based oxygen sensing. Bromine substitution on the naphthyl ring resulted in intense, clearly distinguishable fluorescence and phosphorescence peaks important for ratiometric oxygen sensing and imaging.
AB - Luminescent materials are important for imaging and sensing. Aromatic difluoroboron β-diketonate complexes (BF2bdks) are classic fluorescent molecules that have been explored as photochemical reagents, two-photon dyes, and oxygen sensors. A series of BF2bdks with naphthyl and phenyl groups was synthesized, and photophysical properties were investigated in both methylene chloride and poly(lactic acid) (PLA). Polymer molecular weight and dye attachment site along with bromide heavy atom placement were varied to tune optical properties of dye-PLA materials. Systems without heavy atoms have long phosphorescence lifetimes, which is useful for lifetime-based oxygen sensing. Bromine substitution on the naphthyl ring resulted in intense, clearly distinguishable fluorescence and phosphorescence peaks important for ratiometric oxygen sensing and imaging.
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U2 - 10.1021/ma5006606
DO - 10.1021/ma5006606
M3 - Article
AN - SCOPUS:84902203518
SN - 0024-9297
VL - 47
SP - 3736
EP - 3746
JO - Macromolecules
JF - Macromolecules
IS - 11
ER -