Three branched molecules (T1-T3) were synthesized through simple step to realize or enhance 2PA in aggregates. Spectra data showed that one-and two-branched molecule (T1 and T2) owned the remarkable AIE properties, which came from the formation of J-aggregation because of their partial planarization in aggregation state. SEM and DLS illustrated that the ordered aggregation and the small particle size had important influence on fluorescence emission. The open aperture Zscan experiments showed that T1 and T2 po…
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