Development of A Thermo‐Responsive Conjugated Polymer with Photobleaching‐Resistance Property and Tunable Photosensitizing Performance. Issue 15 (1st July 2020)

• Record Type: Journal Article
• Authors: Xu, Qingling; Lv, Fengting; Liu, Libing; Wang, Shu
• Is Part Of: Macromolecular rapid communications. Volume 41:Issue 15(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-07-01
• Subjects: conjugated polymers -- photosensitizing -- photostability -- thermo‐responsive polymers; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.202000249
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: A thermo‐responsive conjugated polymer, PFBT‐gPA is synthesized by grafting the poly( N ‐isopropylacrylamide) (PNIPAAm) to the side chains of a conjugated polyfluorene derivative through atom transfer radical polymerization (ATRP). PFBT‐gPA undergoes a reversible phase transition in water below and above the lower critical solution temperature (LCST) and the process is studied by differential scanning calorimetry (DSC) analysis and UV/vis absorption spectra. PFBT‐gPA shows a good photostability under UV light irradiation especially above the LCST. Moreover, the photosensitizing performance of PFBT‐gPA could be tuned simply by changing temperature. The unique properties of PFBT‐gPA promise its potential applications in sensing and photodynamic therapy. Abstract : A conjugated polymer grafted with poly( N ‐isopropylacrylamide) (PNIPAAm) is achieved by atom transfer radical polymerization from the side chains of a polyfluorene derivative. The polymer exhibits a reversible thermal‐responsive phase transition. The polymer shows high photostability under UV light irradiation especially above lower critical solution temperature. The photosensitizing performance varies at different temperature.