Bright, Multi‐responsive, Sky‐Blue Platinum(II) Phosphors Based on a Tetradentate Chelating Framework

Abstract

A new class of highly efficient and stable, blue-phosphorescent Pt complexes based on a tetradentate chelating framework has been found to exhibit highly sensitive and reversible responses to multiple external stimuli including temperature, pressure, and UV irradiation with distinct phosphorescent color switching-from blue to red or white. Intermolecular excimer formation is the main origin of this intriguing multi-response phenomenon. Highly efficient singlet-oxygen sensitization by the Pt compounds yields UV-light-induced phosphorescence enhancement and color switching.

Recent advances in phosphorescent platinum complexes for organic light-emitting diodes

“…Two different classes of tetradentate platinum derivatives bearing N^C^C^N rigid ligands were recently reported by Wang and co-workers, bearing either bis(1,2,3-triazolylphenyl) [86] or bis(1,2,4-triazolylphenyl) ligands [87]. Examples of the former class, namely complexes 39 and 40 , are displayed in Fig.…”

A facile way to obtain near-infrared room-temperature phosphorescent soft materials based on Bodipy dyes

“…Compared with traditional metal complexes and inorganic compounds, pure organic materials with RTP emission are gradually arousing people's interest because of their low cost and low toxicity. [9][10][11][12] In particular, great achievements have been made in preparing RTP emitting materials in the amorphous state because crystallization usually needs strict growth conditions which might restrict their development. [13][14][15][16][17][18] Amorphous polymers have been veried to be rigid enough to effectively suppress nonradiative transition and promote RTP emission.…”

Mechanically triggered reversible stepwise tricolor switching and thermochromism of anthracene-o-carborane dyad

“…Since then, a series of luminescent materials with such features have been reported on owing to their promising potential as sensors, photoluminescence (PL) switches and optical recording devices. 4 – 13 Interestingly, most emission color changing processes of piezochromic luminescent materials are accompanied by a crystal-to-amorphous phase transition, aggregation state change, excimer formation and pressure-induced chemical structure changes. 14 – 18 Although a few piezochromic luminescent materials display tricolor switching and pressure triggered temperature dependent ICT emission, the mechanism is attributed to the mechanical force breaking the donor–acceptor (D–A) interactions which induces the ICT process.…”