J.R. Sánchez-Valencia, J. Toudert, L. González-García, A.R. González-Elipe, A. Barranco
Chemical Communications, 46 (2010) 4372-4374
An enhanced fluorescent emission of the dye Rhodamine 800 in the Near-IR is observed in the presence of other xanthene dye molecules (RhX) when they are hosted in different matrices due to the formation of a new type of fluorescent J-heteroaggregates. This enhanced emission of the acceptor occurs despite the low spectral overlapping and the low quantum yield of Rh800.
Excitation transfer mechanism along the visible to the Near-IR in rhodamine J-heteroaggregates