Premium
Fluorescent Block Copolymer‐MoS 2 Nanocomposites for Real‐Time Photothermal Heating and Imaging
Author(s) -
Park Chan Ho,
Yun Hongseok,
Yang Hyunseung,
Lee Junhyuk,
Kim Bumjoon J.
Publication year - 2017
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201604403
Subject(s) - materials science , photothermal therapy , copolymer , fluorescence , nanocomposite , photothermal effect , förster resonance energy transfer , scattering , signal (programming language) , dynamic light scattering , nanotechnology , polymer , optoelectronics , nanoparticle , optics , composite material , physics , computer science , programming language
Novel self‐monitoring photothermal (PT) agents are developed using optothermally responsive block copolymer‐MoS 2 composites (BCP‐MoS 2 ), which enable simultaneous PT heating and imaging of temperature profiles. In particular, upon near‐infrared light exposure, PT energy from MoS 2 successfully increases local temperature and induces thermally activated conformational transitions of the BCP on MoS 2 . This leads to fluorescent signal changes caused by distance‐dependent Förster resonance energy transfer between the BCP and MoS 2 . Importantly, it is demonstrated that the use of BCP‐MoS 2 for PT heating and optical mapping is fully reversible with excellent stability. The detailed mechanism of the responsive behavior of BCP‐MoS 2 is elucidated by measurements of time‐resolved fluorescence and dynamic light scattering. In addition, the BCP‐MoS 2 system is integrated into organogel matrices to demonstrate its potential as aportable, self‐monitoring PT system suitable for biological and environmental applications.