High-intensity near-IR fluorescence in semiconducting polymer dots achieved by cascade FRET strategy

X Zhang, J Yu, Y Rong, F Ye, DT Chiu, K Uvdal

Index: Zhang, Xuanjun; Yu, Jiangbo; Rong, Yu; Ye, Fangmao; Chiu, Daniel T.; Uvdal, Kajsa Chemical Science, 2013 , vol. 4, # 5 p. 2143 - 2151

Full Text: HTML

Citation Number: 36

Abstract

Near-IR (NIR) emitting semiconducting polymer dots (Pdots) with ultrabright fluorescence have been prepared for specific cellular targeting. A series of π-conjugated polymers were synthesized to form water dispersible multicomponent Pdots by an ultrasonication-assisted co-precipitation method. By optimizing cascade energy transfer in Pdots, high-intensity NIR fluorescence (Φ= 0.32) with tunable excitations, large absorption–emission separation (up ...