TY - JOUR
T1 - Near-infrared luminescent PMMA-supported metallopolymers based on Zn-Nd schiff-base complexes
AU - Zhang, Zhao
AU - Feng, Weixu
AU - Su, Peiyang
AU - Lü, Xingqiang
AU - Song, Jirong
AU - Fan, Daidi
AU - WONG, Rick W K
AU - Jones, Richard A.
AU - Su, Chengyong
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/6/16
Y1 - 2014/6/16
N2 - On the basis of self-assembly from the divinylphenyl-modified Salen-type Schiff-base ligands H2L1 (N,N′-bis(5-(3′- vinylphenyl)-3-methoxy-salicylidene)ethylene-1,2-diamine) or H2L 2 (N,N′-bis(5-(3′-vinylphenyl)-3-methoxy-salicylidene) phenylene-1,2-diamine) with Zn(OAc)2·2H2O and Ln(NO3)3·6H2O in the presence of pyridine (Py), two series of heterobinuclear Zn-Ln complexes [Zn(L n)(Py)Ln(NO3)3] (n = 1, Ln = La, 1; Ln = Nd, 2; or Ln = Gd, 3 and n = 2, Ln = La, 4; Ln = Nd, 5; or Ln = Gd, 6) are obtained, respectively. Further, through the physical doping and the controlled copolymerization with methyl methacrylate (MMA), two kinds of PMMA-supported hybrid materials, doped PMMA/[Zn(Ln)(Py)Ln(NO3) 3] and Wolf Type II Zn2+-Ln3+-containing metallopolymers Poly(MMA-co-[Zn(Ln)(Py)Ln(NO3) 3]), are obtained, respectively. The result of their solid photophysical properties shows the strong and characteristic near-infrared (NIR) luminescent Nd3+-centered emissions for both PMMA/[Zn(L n)(Py)Nd(NO3)3] and Poly(MMA-co-[Zn(L n)(Py)Nd(NO3)3]), where ethylene-linked hybrid materials endow relatively higher intrinsic quantum yields due to the sensitization from both 1LC and 3LC of the chromorphore than those from only 1LC in phenylene-linked hybrid materials, and the concentration self-quenching of Nd3+-based NIR luminescence could be effectively prevented for the copolymerized hybrid materials in comparison with the doped hybrid materials.
AB - On the basis of self-assembly from the divinylphenyl-modified Salen-type Schiff-base ligands H2L1 (N,N′-bis(5-(3′- vinylphenyl)-3-methoxy-salicylidene)ethylene-1,2-diamine) or H2L 2 (N,N′-bis(5-(3′-vinylphenyl)-3-methoxy-salicylidene) phenylene-1,2-diamine) with Zn(OAc)2·2H2O and Ln(NO3)3·6H2O in the presence of pyridine (Py), two series of heterobinuclear Zn-Ln complexes [Zn(L n)(Py)Ln(NO3)3] (n = 1, Ln = La, 1; Ln = Nd, 2; or Ln = Gd, 3 and n = 2, Ln = La, 4; Ln = Nd, 5; or Ln = Gd, 6) are obtained, respectively. Further, through the physical doping and the controlled copolymerization with methyl methacrylate (MMA), two kinds of PMMA-supported hybrid materials, doped PMMA/[Zn(Ln)(Py)Ln(NO3) 3] and Wolf Type II Zn2+-Ln3+-containing metallopolymers Poly(MMA-co-[Zn(Ln)(Py)Ln(NO3) 3]), are obtained, respectively. The result of their solid photophysical properties shows the strong and characteristic near-infrared (NIR) luminescent Nd3+-centered emissions for both PMMA/[Zn(L n)(Py)Nd(NO3)3] and Poly(MMA-co-[Zn(L n)(Py)Nd(NO3)3]), where ethylene-linked hybrid materials endow relatively higher intrinsic quantum yields due to the sensitization from both 1LC and 3LC of the chromorphore than those from only 1LC in phenylene-linked hybrid materials, and the concentration self-quenching of Nd3+-based NIR luminescence could be effectively prevented for the copolymerized hybrid materials in comparison with the doped hybrid materials.
UR - http://www.scopus.com/inward/record.url?scp=84902441202&partnerID=8YFLogxK
U2 - 10.1021/ic500132n
DO - 10.1021/ic500132n
M3 - Article
AN - SCOPUS:84902441202
VL - 53
SP - 5950
EP - 5960
JO - Inorganic Chemistry
JF - Inorganic Chemistry
SN - 0020-1669
IS - 12
ER -