TY - JOUR
T1 - Near-infrared (NIR) luminescent metallopolymers based on Ln 4(Salen)4 nanoclusters (Ln = Nd or Yb)
AU - Feng, Weixu
AU - Zhang, Yao
AU - Zhang, Zhao
AU - Su, Peiyang
AU - Lü, Xingqiang
AU - Song, Jirong
AU - Fan, Daidi
AU - WONG, Rick W K
AU - Jones, Richard A.
AU - Su, Chengyong
PY - 2014/2/28
Y1 - 2014/2/28
N2 - A series of novel Wolf Type II Ln3+-containing metallopolymers PNBE-co-Ln4(Salen)4 (Ln = La, Nd, Yb, Er or Gd) are obtained from the controlled ring-opening metathesis polymerization (ROMP) of norbornene (NBE) and the homoleptic tetranuclear [Ln4(L) 2(HL)2Cl2(μ3-OH) 2]·2Cl (Ln4(Salen)4, Ln = La, 1; Nd, 2; Ln = Yb, 3; Ln = Er, 4; Ln = Gd, 5) self-assembled from the diallyl-modified flexible hexadentate Salen-type Schiff-base ligand H2L (N,N′-bis(5-allyl-3-methoxysalicylidene)cyclohexane-1,2-diamine) with LnCl3·6H2O. The results of their photophysical properties show that the strong and characteristic near-infrared (NIR) luminescent Ln3+-centered emissions for PNBE-co-Ln 4(Salen)4 (Ln = Nd, 2; Yb, 3) are retained with relatively higher intrinsic quantum yields than the corresponding monomers in solution, and the concentration self-quenching of Ln3+-based materials could be effectively prevented in both solution and solid states.
AB - A series of novel Wolf Type II Ln3+-containing metallopolymers PNBE-co-Ln4(Salen)4 (Ln = La, Nd, Yb, Er or Gd) are obtained from the controlled ring-opening metathesis polymerization (ROMP) of norbornene (NBE) and the homoleptic tetranuclear [Ln4(L) 2(HL)2Cl2(μ3-OH) 2]·2Cl (Ln4(Salen)4, Ln = La, 1; Nd, 2; Ln = Yb, 3; Ln = Er, 4; Ln = Gd, 5) self-assembled from the diallyl-modified flexible hexadentate Salen-type Schiff-base ligand H2L (N,N′-bis(5-allyl-3-methoxysalicylidene)cyclohexane-1,2-diamine) with LnCl3·6H2O. The results of their photophysical properties show that the strong and characteristic near-infrared (NIR) luminescent Ln3+-centered emissions for PNBE-co-Ln 4(Salen)4 (Ln = Nd, 2; Yb, 3) are retained with relatively higher intrinsic quantum yields than the corresponding monomers in solution, and the concentration self-quenching of Ln3+-based materials could be effectively prevented in both solution and solid states.
UR - http://www.scopus.com/inward/record.url?scp=84893484736&partnerID=8YFLogxK
U2 - 10.1039/c3tc31814a
DO - 10.1039/c3tc31814a
M3 - Journal article
AN - SCOPUS:84893484736
SN - 2050-7526
VL - 2
SP - 1489
EP - 1499
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 8
ER -