A series of PVA red-light films were fabricated thought doping the pure red-light Eu-complex Eu(TTA)2TPY-OCH3 into PVA matrix,then the structures and properties of PVA fluorescent films were characterized and analyzed by FT-IR,UV-Vis,PL,DSC and TGA,etc.The results showed that with the increase of concentration of europium complexes,the emission intensity of film gradually strengthen which the content of europium complexes from 1% to 7%,and the Tg of PVA fluorescence film decreased with the increase of europium complexes content.In addition,Td-5% decomposition temperature of films all were from 230℃ to 240℃,which had better thermal stability and can be meet their application in many fields.
[1]Xie Z L,Xu H B,Geßner A,et al.A transparent,flexible,ion conductive,and luminescent PMMA ionogel based on a Pt/Eu bimetallic complex and the ionic liquid [Bmim][N(Tf)2][J].J Mater Chem,2012,22(16):8110-8116.
[2]Raj D B,Francis B,Reddy M L,et al.Highly luminescent poly(methyl methacrylate)-incorporated europium complex supported by a carbazole-based fluorinated β-diketonate ligand and a 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene oxide co-ligand[J].Inorganic Chemistry,2010,49(19):9055-9063.[3]Balamurugan A,Reddy M L,Jayakannan M.Single polymer photosensitizer for Tb3+ and Eu3+ ions:an approach for white light emission based on carboxylic-functionalized poly(m-phenylenevinylene)s[J].Journal of Physical Chemistry B,2009,113(43):14128.
[4]Yang C,Liu S,Xu J,et al.Efficient red emission from poly(vinyl butyral) films doped with a novel europium complex based terpyridyl as ancillary ligand:synthesis,structural elucidation by Sparkle/RM1 calculation,and photophysical properties[J].Polymer Chemistry,2015,7(5):1147-1157.
[5]Yang C,Xu J,Zhang Y,et al.Efficient monochromatic red-light-emitting PLEDs based on a series of nonconjugated Eu-polymers containing a neutral terpyridyl ligand[J].Journal of Materials Chemistry C,2013,1(32):4885-4901.
[6]Yang C,Zhang P,Zhou H,et al.Poly-β-hydroxybutyrate sensitizing effect on the photophysical properties of environment friendly fluorescent films containing europium complex[J].Journal of Luminescence,2016,178:172-177.
[7]Divya V,Reddy M L P.Visible-light excited red emitting luminescent nanocomposites derived from Eu3+-phenathrene-based fluorinated β-diketonate complexes and multi-walled carbon nanotubes[J].Journal of Materials Chemistry C,2013,1(1):160-170.
[8]Zhang H,Song H,Yu H,et al.Electrospinning preparation and photoluminescence properties of rare-earth complex/polymer composite fibers[J].Journal of Physical Chemistry C,2007,111(17):9155-9162.
[9]Görller-Walrand C,Fluyt L,Ceulemans A,et al.Magnetic dipole transitions as standards for Judd-Ofelt parametrization in lanthanide spectra[J].Journal of Chemical Physics,1991,95(5):3099-3106.
[10]吴李国,章悦庭,胡绍华.聚乙烯醇水凝胶的制备及应用进展[J].东华大学学报,2001,27(6):114-118.
[11]杜嘉英,尚会建,许保云,等.聚乙烯醇在医疗中的应用进展[J].河北工业科技,2005,22(1):52-54.
[12]Omidian H,Park K.Biomedical applications of hydrogels handbook[M].New York:Springer-Verlag New York Inc,2010,351-374.
基金资助
国家自然科学基金(21404017);重庆市创新能力建设项目以及重庆市社会事业与民生保障创新专项(cstc2013kjrc-qnrc50003和cstc2016shmszx80052);重庆市教委科学技术研究项目(KJ1709223)