Papadopoulos Kyparisis, Tselekidou Despoina, Zachariadis Alexandros, Laskarakis Argiris, Logothetidis Stergios, Gioti Maria
Nanotechnology Laboratory LTFN, Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Organic Electronic Technologies P.C. (OET), 20th km Thessaloniki-Tagarades, 57001 Thermi, Greece.
Nanomaterials (Basel). 2024 Oct 7;14(19):1608. doi: 10.3390/nano14191608.
A systematic investigation of optical, electrochemical, photophysical, and electrooptical properties of printable green color-emitting polymer (poly(9,9-dioctylfluorene-alt-bithiophene)) (F8T2) and spiro-copolymer (SPG-01T) was conducted to explore their potentiality as an emissive layer for wearable polymer light-emitting diode (PLED) applications. We compared the two photoactive polymers in terms of their spectral characteristics and color purity, as these are the most critical factors for wearable lighting sources and optical sensors. Low-cost, solution-based methods and facile architecture were applied to produce rigid and flexible light-emitting devices with high luminance efficiencies. Emission bandwidths, color coordinates, operational characteristics, and luminance were also derived to evaluate the device's stability. The tuning of emission's spectral features by layer thickness variation was realized and was correlated with the interplay between H-aggregates and J-aggregates formations for both conjugated polymers. Finally, we applied the functional green light-emitting PLED devices based on the two studied materials for the detection of Rhodamine 6G. It was determined that the optical detection of the R6G photoluminescence is heavily influenced by the emission spectrum characteristics of the PLED and changes in the thickness of the active layer.
对可印刷绿色发光聚合物（聚（9,9-二辛基芴-alt-联噻吩））（F8T2）和螺环共聚物（SPG-01T）的光学、电化学、光物理和电光性质进行了系统研究，以探索它们作为可穿戴聚合物发光二极管（PLED）应用发光层的潜力。我们根据光谱特性和色纯度对这两种光活性聚合物进行了比较，因为这些是可穿戴光源和光学传感器的最关键因素。采用低成本、基于溶液的方法和简便的结构来制造具有高亮度效率的刚性和柔性发光器件。还推导出发射带宽、色坐标、操作特性和亮度，以评估器件的稳定性。通过层厚度变化实现了发射光谱特征的调谐，并与两种共轭聚合物的H-聚集体和J-聚集体形成之间的相互作用相关联。最后，我们将基于这两种研究材料的功能性绿色发光PLED器件应用于罗丹明6G的检测。结果表明，PLED的发射光谱特性和有源层厚度的变化对R6G光致发光的光学检测有很大影响。
