TY - JOUR
T1 - 9,10-Diphenylanthracene immobilized in mesostructured silica materials with a highly efficient deep-blue fluorescent property
AU - Kim, Aran
AU - Lee, Jihye
AU - Kim, Byeong Guk
AU - Lee, Dong Jin
AU - Jung, Hyun
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/10
Y1 - 2017/10
N2 - The fluorescent solid material, which emits highly efficient deep-blue light, was successfully fabricated by stabilized 9,10-diphenylanthracene (DPA) molecules in mesostructured silica material (MSM) (referred to as DPA-MSM). The DPA molecules are favorably introduced into the hydrophobic domain of a self-assembled amphiphilic triblock copolymer (poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol), Pluronic P123) template through a one-pot synthetic route based on the van der Waals interaction. Powder X-ray diffraction patterns show that the unit-cell parameter of DPA-MSM was 1.2 nm larger than that of pure MSM, along with the well-ordered hexagonal structure. The photophysical properties of DPA-MSM have been studied and compared with those of DPA in solution (0.15 mM) and powdered states, respectively. Both absorption and emission maxima of the immobilized DPA show a remarkable hypsochromic shift as compared with those of pure DPA powder. In addition, we have observed distinct spectral features in the DPA-MSM, which resemble those of DPA dissolved in cyclohexane, indicating that the immobilized DPA is molecularly separated by the interactions with the poly(propylene glycol) part in P123. The fluorescence decay behavior showed that DPA-MSM has a longer lifetime because the intramolecular motions of DPA are strongly restricted by the confined environment within the pore channel of rigid MSM. These results also show that the immobilized DPA has a higher fluorescence quantum yield than did DPA in dissolved or powdered states. The fabricated blue LED chip with DPA-MSM exhibited outstanding deep-blue color with CIE coordinates of (0.15, 0.03). It was found that the incorporation of DPA in MSM provides an efficient blue emitter in the solid-state.
AB - The fluorescent solid material, which emits highly efficient deep-blue light, was successfully fabricated by stabilized 9,10-diphenylanthracene (DPA) molecules in mesostructured silica material (MSM) (referred to as DPA-MSM). The DPA molecules are favorably introduced into the hydrophobic domain of a self-assembled amphiphilic triblock copolymer (poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol), Pluronic P123) template through a one-pot synthetic route based on the van der Waals interaction. Powder X-ray diffraction patterns show that the unit-cell parameter of DPA-MSM was 1.2 nm larger than that of pure MSM, along with the well-ordered hexagonal structure. The photophysical properties of DPA-MSM have been studied and compared with those of DPA in solution (0.15 mM) and powdered states, respectively. Both absorption and emission maxima of the immobilized DPA show a remarkable hypsochromic shift as compared with those of pure DPA powder. In addition, we have observed distinct spectral features in the DPA-MSM, which resemble those of DPA dissolved in cyclohexane, indicating that the immobilized DPA is molecularly separated by the interactions with the poly(propylene glycol) part in P123. The fluorescence decay behavior showed that DPA-MSM has a longer lifetime because the intramolecular motions of DPA are strongly restricted by the confined environment within the pore channel of rigid MSM. These results also show that the immobilized DPA has a higher fluorescence quantum yield than did DPA in dissolved or powdered states. The fabricated blue LED chip with DPA-MSM exhibited outstanding deep-blue color with CIE coordinates of (0.15, 0.03). It was found that the incorporation of DPA in MSM provides an efficient blue emitter in the solid-state.
KW - 9,10-diphenylanthracene
KW - Deep-blue emitter
KW - Fluorescent solid material
KW - Mesostructured silica material
KW - Organic-inorganic hybrid composite
UR - http://www.scopus.com/inward/record.url?scp=85019586537&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2017.05.056
DO - 10.1016/j.jlumin.2017.05.056
M3 - Article
AN - SCOPUS:85019586537
SN - 0022-2313
VL - 190
SP - 154
EP - 160
JO - Journal of Luminescence
JF - Journal of Luminescence
ER -