TY - JOUR
T1 - Enhanced quantum yield of nanographenes incorporated in supermicroporous silicas and the co-adsorption effect of water molecules
AU - Watanabe, Hiroto
AU - Fujimaki, Yasuto
AU - Hayashi, Kosei
AU - Imai, Hiroaki
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Nanographene with various molecular sizes was synthesized and incorporated into the size-controlled pores of super-microporous silica (SMPS). It was found that when the pore diameter of the SMPS matched the molecular size of the nanographene, the fluorescence quantum yield was greatly enhanced. Furthermore, co-adsorption of water molecules improved the quantum yield. This improvement is attributed to a suppression of the interaction between the nanographene and silica walls, which lowers the quantum yield. Since nanographene is insoluble in water, it becomes surrounded by water molecules, almost like in aqueous solution. Finally, highly fluorescent solid materials were obtained by incorporating nanographene into SMPS.
AB - Nanographene with various molecular sizes was synthesized and incorporated into the size-controlled pores of super-microporous silica (SMPS). It was found that when the pore diameter of the SMPS matched the molecular size of the nanographene, the fluorescence quantum yield was greatly enhanced. Furthermore, co-adsorption of water molecules improved the quantum yield. This improvement is attributed to a suppression of the interaction between the nanographene and silica walls, which lowers the quantum yield. Since nanographene is insoluble in water, it becomes surrounded by water molecules, almost like in aqueous solution. Finally, highly fluorescent solid materials were obtained by incorporating nanographene into SMPS.
KW - Nanographenes
KW - Phosphor
KW - Porous silica
UR - http://www.scopus.com/inward/record.url?scp=85068906928&partnerID=8YFLogxK
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U2 - 10.1246/bcsj.20180383
DO - 10.1246/bcsj.20180383
M3 - Article
AN - SCOPUS:85068906928
VL - 92
SP - 923
EP - 926
JO - Bulletin of the Chemical Society of Japan
JF - Bulletin of the Chemical Society of Japan
SN - 0009-2673
IS - 5
ER -