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, Wai Kwok
AU - Jones, Richard A.
AU - Su, Chengyong
N1 - Funding information:
This work is funded by the National Natural Science Foundation (21373160, 91222201, 21173165, 20871098), the Program for New Century Excellent Talents in University from the Ministry of Education of China (NCET-10-0936), the research fund for the Doctoral Program (20116101110003) of Higher Education, the Education Committee Foundation (11JK0588), the Science, Technology and Innovation Project (2012KTCQ01-37) of Shaanxi Province, Graduate Innovation and Creativity Fund (YZZ12038) of Northwest University, Hong Kong Research Grants Council (HKBU 202407 and FRG/06-07/II-16) in P. R. of China, the Robert A. Welch Foundation (Grant F-816), the Texas Higher Education Coordinating Board (ARP 003658-0010-2006), and the Petroleum Research Fund, administered by the American Chemical Society (47014-AC5).
Publisher copyright:
© 2014 American Chemical Society
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 -