| 초록 |
We developed novel self-monitoring photothermal (PT) agents using opto-thermally responsive block copolymer-molybdenum disulfide composites (BCP-MoS2), which enabled simultaneous PT heating and imaging of temperature profiles. In particular, upon near-infrared light exposure, PT energy from MoS2 successfully increased local temperature and induced thermally activated conformational transitions of the BCP on MoS2. This led to fluorescent signal changes caused by distant-dependent Förster resonance energy transfer between the BCP and MoS2. Importantly, the use of BCP-MoS2 for PT heating and optical mapping was fully reversible with excellent stability. The detailed mechanism of the responsive behavior of BCP-MoS2 was elucidated by measurements of time-resolved fluorescence and dynamic light scattering. The BCP-MoS2 system was integrated into organogel matrices to demonstrate its potential as portable, self-monitoring PT system suitable for biological and environmental applications. |
