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 |
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Pages (from-to) | 41-45 |
Number of pages | 5 |
Journal | Inorganic Chemistry Communications |
Volume | 20 |
DOIs | |
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