Benzylidene fluorene ozonolysis under chemiluminescence mimetic conditions in homegeneous and micellar media I: Kinetic law as a function of hammett's σ constants and quenching by the leaving moiety

Papalambros, L.; Nikokavouras, J.

doi:10.1016/0047-2670(87)80007-2

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“…2.1 Materials and Instrumentations 9-(2-Bromobenzylidene) fluorene, 9-(3-bromobenzylidene) fluorene and 9-(4-bromobenzylidene) fluorene were synthesized according to the literatures, respectively [9][10][11]. 1 H NMR and 13 C NMR spectra were recorded on a Bruker Avance 400 spectrometer.…”

Section: Methodsmentioning

confidence: 99%

Similar and Different: Effect of Substitution Pattern on the Aggregation-Induced Emission Property of [4'-(bisphenylamino)[1,1']biphenyl]methylene Fluorenes

Chen

Xie

Qiu

et al. 2013

AMR

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Three isomers, [4'-(bisphenylamino)[1,1']biphen-2-yl]methylenefluorene (BAB2MF), [4'-(bisphenylamino)[1,1']biphen-3-yl]methylenefluorene (BAB3MF) and [4'-(bisphenylamino)[1,1']biphen-4-yl]methylenefluorene (BAB4MF), were synthesized through Suzuki coupling. The substitution pattern exerts a dramatic influence on the optical property. BAB3MF and BAB4MF are hardly emissive either in the solution or as solid state. On the contrary, BAB2MF emits strongly, especially in the aggregate state with a high fluorescent quantum yield of 69%. Furthermore, BAB2MF shows an aggregation-induced enhanced emission behavior. BAB2MF solid emits at 488 nm, about 60 nm blue-shifted from its solution.

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