TY - JOUR
T1 - Single-Component Oligomer Nanoparticle-Based Size-Dependent Dual-Emission Modulation
AU - Liu, Wei
AU - Sun, Mingliang
AU - Yu, Liangmin
AU - Song, Xin
AU - Li, Feng
AU - Lee, Chun Sing
AU - Roy, Vellaisamy A.L.
N1 - Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - Multichromophoric oligomers offer a versatile platform for nanoparticle multicolor fluorescent modulation. A donor-acceptor-donor (D-A-D) type oligomer (DDBTD), with blue emitting antenna and red emitting core, is chosen to assemble into fluorescent colloidal nanoparticles (FCNs) using a nanoprecipitation method. By modulating the DDBTD concentrations in good solvent, the DDBTD nanoparticles with average diameters ranging from sub-10 to 300 nm are obtained by the nanoprecipitation process in aqueous solution. Interestingly, multicolor photoluminescence (PL) can be realized from bright blue (∼440 nm) to rose red (∼630 nm) based on FCNs size control. The size-dependent PL originates from the aggregation-enhanced fluorescence resonance energy transfer (FRET) from diphenyl-aminofluorenyl antenna unit (blue emitter) to benzothiadiazole-based core (red emitter). Furthermore, the lifetime measurement of the FCNs in excited state shows a size-dependent behavior, which confirms that the size-dependent multicolor PL modulation is adjusted by FRET in the nanoscale oligomer. This work highlights the potential of the single-component multichromophoric oligomer FCNs for luminescent modulation applications.
AB - Multichromophoric oligomers offer a versatile platform for nanoparticle multicolor fluorescent modulation. A donor-acceptor-donor (D-A-D) type oligomer (DDBTD), with blue emitting antenna and red emitting core, is chosen to assemble into fluorescent colloidal nanoparticles (FCNs) using a nanoprecipitation method. By modulating the DDBTD concentrations in good solvent, the DDBTD nanoparticles with average diameters ranging from sub-10 to 300 nm are obtained by the nanoprecipitation process in aqueous solution. Interestingly, multicolor photoluminescence (PL) can be realized from bright blue (∼440 nm) to rose red (∼630 nm) based on FCNs size control. The size-dependent PL originates from the aggregation-enhanced fluorescence resonance energy transfer (FRET) from diphenyl-aminofluorenyl antenna unit (blue emitter) to benzothiadiazole-based core (red emitter). Furthermore, the lifetime measurement of the FCNs in excited state shows a size-dependent behavior, which confirms that the size-dependent multicolor PL modulation is adjusted by FRET in the nanoscale oligomer. This work highlights the potential of the single-component multichromophoric oligomer FCNs for luminescent modulation applications.
UR - http://www.scopus.com/inward/record.url?scp=85042801780&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.7b12272
DO - 10.1021/acs.jpcc.7b12272
M3 - Article
AN - SCOPUS:85042801780
SN - 1932-7447
VL - 122
SP - 4199
EP - 4205
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 8
ER -