Issue 3, 2012

BF2-bound chromophore-containing NNPt(ii) bisacetylide complex and its application as sensitizer for triplet–triplet annihilation based upconversion

Abstract

Difluoroboron (BF2) bound phenylacetylide was attached to the Pt(II) center of NNPt(II) bisacetylide complex (Pt-1). Enhanced absorption in the visible region (ε = 1.37 × 104 M−1 cm−1 at 434 nm) and emissive 3IL excited state (τ = 0.92 μs, Φ = 3.3%) were observed for Pt-1, compared to the model complex dbbpy Pt(II) bisphenylacetylide (Pt-2, τ = 0.90 μs, Φ = 40.0%. dbbpy = 4,4′-di-tert-butyl-2,2′-bipyridine). Pt-1 was used as the triplet sensitizer for triplet–triplet annihilation (TTA) based upconversion and an upconversion quantum yield (ΦUC) of 8.9% was observed with 9,10-diphenylanthracence (DPA) as the triplet acceptor. In comparison, no upconversion was observed for the model complex Pt-2.

Graphical abstract: BF2-bound chromophore-containing N⁁NPt(ii) bisacetylide complex and its application as sensitizer for triplet–triplet annihilation based upconversion

Supplementary files

Article information

Article type
Paper
Submitted
10 Jul 2011
Accepted
12 Oct 2011
First published
07 Dec 2011

RSC Adv., 2012,2, 1061-1067

BF2-bound chromophore-containing NNPt(II) bisacetylide complex and its application as sensitizer for triplet–triplet annihilation based upconversion

Y. Liu, Q. Li, J. Zhao and H. Guo, RSC Adv., 2012, 2, 1061 DOI: 10.1039/C1RA00434D

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