摘要
以一种方酸菁染料、水溶性石墨烯和聚乙烯醇为原料,设计合成了在近红外区具有强荧光(660~665 nm)特性及良好的光热稳定性的方酸菁/聚乙烯醇二元和方酸菁/石墨烯/聚乙烯醇三元高分子材料;与在水中相比,方酸菁染料在聚乙烯醇中的最大紫外-可见吸收和荧光波长红移,荧光强度和光稳定性大幅提高;石墨烯的存在增强了材料的光稳定性。
Near-infrared fluorescence squaraine/polyvinyl alcohol （PVA） binary and squaraine/hydrophilic graphene/PVA ternary polymers with stronger fluorescence （660 - 665 nm） intensity, photostabihty and thermostability were designed and synthesized from a squaraine dye, water soluble graphene and PVA. Compared to those in water, the maximum UV-Vis absorption and fluorescence wavelengths of the squaraine in PVA showed red shifts, and the fluorescence intensity and photostability were significantly enhanced. The presence of the graphene improved the photostability and thermostability of the material.
出处
《应用化学》
CAS
CSCD
北大核心
2018年第1期53-59,共7页
Chinese Journal of Applied Chemistry
基金
河北省自然科学基金资助课题(B2015203259)~~
关键词
近红外荧光高分子材料
聚乙烯醇
改性与合成
方酸菁染料
石墨烯
near infrared fluorescence polymer materials
polyvinyI alcohol
modification and synthesis
squaraine dye
hydrophilic grapheme
