Abstract
The rational design and fabrication of two-photon excited fluorescent probes for noninvasive bioimaging with deeper tissue penetration and higher spacial resolution is a high-priority target yet grand challenge. To this end, herein, a novel amphiphilic N∧N∧N cyclometalated Pt(II) complex (Pt–N1) was designed and synthesized. Benefiting from its flexible chains and abundant electronic structure, it displayed excellent aggregation-induced emission (AIE) behavior under physiological conditions due to its self-assembly process with the proportion of water increased. As a result, Pt–N1 exhibited considerable two-photon action cross-section in aggregation state, suggesting its potential application in bioimaging.
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