Gelation Enhanced Luminescence and Circular Polarized Luminescence of Pt(IV) Complex

Abstract Pt(IV) complexes has been studied for its synthesis and anticancer therapy, while little is focus on supramolecular self‐assembly of Pt(IV) complexes. Herein, three Pt(IV) complexes of the form Pt(ppy)(py n )Cl 3 (n=1‐3), (where ppy represents 2‐phenylpyridine and py represents 4‐phenylpyridine derivatives), were prepared and investigated their photophysical properties upon self‐assembly in dichromethane. Among three complexes, Pt(ppy)(py 3 )Cl 3 , where 4‐phenylpyridine is decorated with long chain L‐glutamated derivative, showed remarkably amplified chiral signal and enhanced luminescence with calculated photoluminescence quantum yield (Φ PL ) of 22.4 %, through forming supramolecular gel. While Pt(ppy)(py 2 )Cl 3 with short chain observed Φ PL of 1.3 %, the same with that of Pt(ppy)(py 1 )Cl 3 (py represents 4‐phenylpyridine). Moreover, L/D‐2‐Pt gel showed displayed circular polarized luminesce with calculated dissymmetry factor value of ±0.005. This paper presents the gelation enhanced luminescence of Pt(IV) complex upon supramolecular self‐assembly.