Work

Alkoxy Chain Engineering Enables Dual‐Mode Temperature‐Activated Phosphorescence in Neutral Manganese(II) Complexes

Year: 2025

Type: article

Abstract: ABSTRACT Temperature‐responsive luminescent materials hold great potential for applications in various advanced photoelectronic fields. However, realizing dual‐mode, temperature‐activated luminescence within a single molecular system remains a significant challenge. Here, two neutral Mn(II) complexes with dual‐mode temperature‐activated luminescent properties have been successfully synthesized by an alkoxy chain engineering strategy. At room temperature, these complexes are strongly emission‐quenched. Reducing or increasing temperature triggers pronounced luminescence enhancement, due to the prohibition of thermal population to the upper lying quenching state or the removal of trace water molecules. Notably, this study provides the first definitive evidence of the dual‐mode temperature‐activated photoluminescent behavior in quartet excited states. Furthermore, simple digit‐display patterns and anti‐counterfeiting applications are demonstrated in this work.

Source: Aggregate

DOI: 10.1002/agt2.70236

Authors: Yanyan Qin, Zinan Wu, Mingbin Lian, Pengfei She, Wai‐Yeung Wong

Institutions: Hong Kong Polytechnic University, Nanjing University of Posts and Telecommunications

Language: English

Topic: Luminescence and Fluorescent Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $3,000

Funders: National Natural Science Foundation of China, Hong Kong Polytechnic University, Nanjing University of Posts and Telecommunications, Nanjing University