Effective enhancement of near-infrared emission by carbazole modification in the Zn-Nd bimetallic Schiff-base complexes

Shunsheng Zhao; Xiangrong Liu; Weixu Feng; Xingqiang Lü; Wai Yeung Wong; Wai Kwok Wong

doi:10.1016/j.inoche.2012.02.010

Effective enhancement of near-infrared emission by carbazole modification in the Zn-Nd bimetallic Schiff-base complexes

Shunsheng Zhao
, Xiangrong Liu
, Weixu Feng
, Xingqiang Lü
, Wai Yeung Wong
, Wai Kwok Wong

Research output: Journal article publication › Journal article › Academic research › peer-review

24 Citations (Scopus)

Abstract

With ZnL1or ZnL2from the simple Salen-type Schiff-base ligand H2L1(H2L1N,N′-bis(3-methoxysalicylidene)-ethylene-1,2-diamine) or the carbazole-modified Salen-type Schiff-base ligand H2L2(H2L2N,N′-bis(3-methoxy-5-{2-[4-(N-carbazyl)- phenyl]-ethynyl}-ethylene-1,2-diamine) as the precursor, two series of four bimetallic ZnLn complexes (Ln=Nd(1 or 3), Ln=Gd (2 or 4) are obtained, respectively. The photophysical properties results showed that the sensitization from the excited state (1LC and3LC) of the ligand H2L1or H2L2and the effective energy transfer of Zn2+-Schiff-base (ZnL1or ZnL2) to the Nd3+ion for the NIR luminescence were realized, respectively. Especially through the cabarzole modification, the improved NIR luminescence of the ZnNd complex 3 was observed due to the realization of the energy level's match of the excited state of the chromophore to the Nd3+ion's exciting state.

Original language	English
Pages (from-to)	41-45
Number of pages	5
Journal	Inorganic Chemistry Communications
Volume	20
DOIs	https://doi.org/10.1016/j.inoche.2012.02.010
Publication status	Published - 1 Jun 2012
Externally published	Yes

Keywords

Carbazole modification
Enhanced NIR luminescence
Sensitization and energy transfer
ZnNd binuclear Schiff-base complex

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

More information

10.1016/j.inoche.2012.02.010

Cite this

@article{b1657ee177ee4f4fa5bbfff228e8ee9d,

title = "Effective enhancement of near-infrared emission by carbazole modification in the Zn-Nd bimetallic Schiff-base complexes",

abstract = "With ZnL1or ZnL2from the simple Salen-type Schiff-base ligand H2L1(H2L1N,N′-bis(3-methoxysalicylidene)-ethylene-1,2-diamine) or the carbazole-modified Salen-type Schiff-base ligand H2L2(H2L2N,N′-bis(3-methoxy-5-\{2-[4-(N-carbazyl)- phenyl]-ethynyl\}-ethylene-1,2-diamine) as the precursor, two series of four bimetallic ZnLn complexes (Ln=Nd(1 or 3), Ln=Gd (2 or 4) are obtained, respectively. The photophysical properties results showed that the sensitization from the excited state (1LC and3LC) of the ligand H2L1or H2L2and the effective energy transfer of Zn2+-Schiff-base (ZnL1or ZnL2) to the Nd3+ion for the NIR luminescence were realized, respectively. Especially through the cabarzole modification, the improved NIR luminescence of the ZnNd complex 3 was observed due to the realization of the energy level's match of the excited state of the chromophore to the Nd3+ion's exciting state.",

keywords = "Carbazole modification, Enhanced NIR luminescence, Sensitization and energy transfer, ZnNd binuclear Schiff-base complex",

author = "Shunsheng Zhao and Xiangrong Liu and Weixu Feng and Xingqiang L{\"u} and Wong, \{Wai Yeung\} and Wong, \{Wai Kwok\}",

year = "2012",

month = jun,

day = "1",

doi = "10.1016/j.inoche.2012.02.010",

language = "English",

volume = "20",

pages = "41--45",

journal = "Inorganic Chemistry Communications",

issn = "1387-7003",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Effective enhancement of near-infrared emission by carbazole modification in the Zn-Nd bimetallic Schiff-base complexes

AU - Zhao, Shunsheng

AU - Liu, Xiangrong

AU - Feng, Weixu

AU - Lü, Xingqiang

AU - Wong, Wai Yeung

AU - Wong, Wai Kwok

PY - 2012/6/1

Y1 - 2012/6/1

N2 - With ZnL1or ZnL2from the simple Salen-type Schiff-base ligand H2L1(H2L1N,N′-bis(3-methoxysalicylidene)-ethylene-1,2-diamine) or the carbazole-modified Salen-type Schiff-base ligand H2L2(H2L2N,N′-bis(3-methoxy-5-{2-[4-(N-carbazyl)- phenyl]-ethynyl}-ethylene-1,2-diamine) as the precursor, two series of four bimetallic ZnLn complexes (Ln=Nd(1 or 3), Ln=Gd (2 or 4) are obtained, respectively. The photophysical properties results showed that the sensitization from the excited state (1LC and3LC) of the ligand H2L1or H2L2and the effective energy transfer of Zn2+-Schiff-base (ZnL1or ZnL2) to the Nd3+ion for the NIR luminescence were realized, respectively. Especially through the cabarzole modification, the improved NIR luminescence of the ZnNd complex 3 was observed due to the realization of the energy level's match of the excited state of the chromophore to the Nd3+ion's exciting state.

AB - With ZnL1or ZnL2from the simple Salen-type Schiff-base ligand H2L1(H2L1N,N′-bis(3-methoxysalicylidene)-ethylene-1,2-diamine) or the carbazole-modified Salen-type Schiff-base ligand H2L2(H2L2N,N′-bis(3-methoxy-5-{2-[4-(N-carbazyl)- phenyl]-ethynyl}-ethylene-1,2-diamine) as the precursor, two series of four bimetallic ZnLn complexes (Ln=Nd(1 or 3), Ln=Gd (2 or 4) are obtained, respectively. The photophysical properties results showed that the sensitization from the excited state (1LC and3LC) of the ligand H2L1or H2L2and the effective energy transfer of Zn2+-Schiff-base (ZnL1or ZnL2) to the Nd3+ion for the NIR luminescence were realized, respectively. Especially through the cabarzole modification, the improved NIR luminescence of the ZnNd complex 3 was observed due to the realization of the energy level's match of the excited state of the chromophore to the Nd3+ion's exciting state.

KW - Carbazole modification

KW - Enhanced NIR luminescence

KW - Sensitization and energy transfer

KW - ZnNd binuclear Schiff-base complex

UR - https://www.scopus.com/pages/publications/84862802270

U2 - 10.1016/j.inoche.2012.02.010

DO - 10.1016/j.inoche.2012.02.010

M3 - Journal article

SN - 1387-7003

VL - 20

SP - 41

EP - 45

JO - Inorganic Chemistry Communications

JF - Inorganic Chemistry Communications

ER -

Effective enhancement of near-infrared emission by carbazole modification in the Zn-Nd bimetallic Schiff-base complexes

Abstract

Keywords

ASJC Scopus subject areas

More information

Other files and links

Fingerprint

Cite this