Novel triphenylamine-based cyclometalated platinum(II) complexes for efficient luminescent oxygen sensing

Trifluoromethyl-substituted cyclometalated iridiumIII emitters with high photostability for continuous oxygen sensing

“…6 shows the operational stability of the sensing films. 31 The luminescence intensity of all iridium complexes in this thin film demonstrated very quick response by alternating O 2 and N 2 atmospheres. The complete reversibility of the luminescence emission of the oxygen-sensitive films allows continuous monitoring of an increase and a decrease in p O 2 .…”

“…31 TGA data reveal that all the complexes have excellent thermal stability, and their 5% weight-reduction temperatures (T dec ) range from 270 to 322 1C (see the ESI †).…”

“…4,31 Luminescence quenching analysis is based on the decrease in emission intensity in the presence of the quencher (O 2 ). 4,31 Luminescence quenching analysis is based on the decrease in emission intensity in the presence of the quencher (O 2 ).…”

Luminescent films for chemo- and biosensing

“…102 Luminescent transition metal complexes, including cyclometalated Ru(II), Ir(III), and Pt(II) complexes, are regarded as promising candidates for photo-responsive molecular devices owing to their long-lived triplet excited state and high quantum yield. [108][109][110][111] The introduction of pyrenyl or pyrenylethynylene appendents into the Ru polypyridine complexes can significantly extend the lifetime of the Ru complexes. The unique excited-state properties of these materials allow them to be fabricated into luminescent films for sensing O 2 by quenching luminescence of transition metal complexes, owing to the energy transfer between luminescent transition metal complexes and the triplet ground state of molecular O 2 .…”

Substituent effect on photo- and electroluminescence properties of heteroleptic cyclometalated platinum(II) complexes based on a 2-(dibenzo[b,d]furan-4-yl)pyridine ligand

“…On the other hand, the LUMO levels of Pt-1c and Pt-2c are stabilized more than the corresponding HOMO levels; stabilization by 0.52 and 0.11 eV is estimated forPt-1c and Pt-2c, respectively, in comparison with Pt-3. Obviously, the decrease in the S 0 →T 1 transition energy in Pt-1c and Pt-2c should be attributed to the stabilization of the LUMO[32,33].…”