Multi-functional fluorescence cellulose composites based on a modified amphiphilic waterborne polyurethane by covalent suspension of the triazine groups

Green fabrication of high strength, transparent cellulose-based films with durable fluorescence and UV-blocking performance

“…4 Nonetheless, it is difficult to achieve homogeneous distribution at the molecular level through physical recombination. 5,6 Functional moieties also potentially suffer from shedding due to weak physical interactions, on one hand. 7,8 On the other hand, traditional chemical methods still face the risk of ACQ 9,10 or the preparation process usually involves coupling agents, 11,12 requiring additional process stages, which significantly limits the large-scale fabrication.…”

Facile Fabrication and Analysis of Highly Sensitive PtTFPP/Carbon Black/Polystyrene Oxygen-Sensitive Composite Films for Optical Dissolved-Oxygen Sensor

“…29,30 It offers high accuracy and the films prepared this way are reusable, long-lasting, and environmentally friendly. 31,32 However, they can be expensive. 33,34 This study aims to fabricate an oxygen-sensitive film with high performance and low cost, which can be used in dissolvedoxygen sensors.…”

“…They also require the frequent replacement of oxygen-permeable films, which is not cost-effective . This study adopts fluorescence analysis for oxygen measurement, which is based on fluorescence quenching. , It offers high accuracy and the films prepared this way are reusable, long-lasting, and environmentally friendly. , However, they can be expensive. , This study aims to fabricate an oxygen-sensitive film with high performance and low cost, which can be used in dissolved-oxygen sensors. The oxygen-sensitive film is prepared using a suitable substrate and fluorescence indicator dyes, which are often metallic complexes with long fluorescence lifetimes, such as platinum tetrakis­(pentafluorophenyl)­porphyrin (PtTFPP), platinum octaethylporphyrin (PtOEP), and [Ru­(bpy) 3 ]­Cl 2 .…”