期刊文献+

掺杂香豆素6的杂化纳米颗粒的制备及荧光性能研究(英文) 被引量:1

Preparation and Analysis of Fluorescent Properties of Coumarin 6-doped Polymer/Alkoxysilane Hybrid Nanoparticles
下载PDF
导出
摘要 采用一种再沉淀-封装法制备了掺杂香豆素6(C6)的杂化荧光纳米颗粒,并通过SEM和DLS对其进行了形貌和粒径大小表征。在450 nm光激发下,制备的C6掺杂纳米颗粒表现出绿色荧光。通过比较光致发光光谱随掺杂浓度的变化,得出C6掺杂纳米颗粒的浓度猝灭是因为分子间能量转移而非C6分子聚集所致。另外,由于所选聚合物基质材料PS和PMMA分子结构的区别,导致PS-基质和PMMA-基质的纳米颗粒的光谱形状不同。C 6分子在PS-基质的纳米颗粒中处于两种不同的微环境,所以发射峰较宽;PMMA是线性分子,PMMA-基质的纳米颗粒中只存在一种局域环境,所以发射峰较窄。高的掺杂浓度会超过纳米颗粒对C6分子的负载能力,从而导致C6分子在水溶液中聚集。 Coumarin 6( C6) doped fluorescent hybrid nanoparticles( NPs) were prepared by a reprecipitation-encapsulation method. The as-prepared NPs were characterized by SEM and DLS. The C6-doped NPs gave strong green fluorescence under the excitation of 450 nm. The concentration-dependent fluorescence of C6-doped NPs was then studied. The results indicated that the fluorescence of C6 was quenched by intermolecular energy transfer rather than by aggregation. In addition,the difference in spectral shape of PS-based and PMMA-based NPs was interpreted from the view of polymer structure. The broad emission band in PS-based NPs was attributed to two different microenvironments surrounding C6,while the narrower emission band in PMMA-based NPs to one local environment. Finally,the loading capacity of the hybrid NPs for C6 is studied,and higher doping concentration will result in aggregates in water.
出处 《发光学报》 EI CAS CSCD 北大核心 2013年第12期1555-1560,共6页 Chinese Journal of Luminescence
基金 国家自然科学基金(61078069,11274038) 教育部新世纪优秀人才支持计划(12-0771) 中央高校基本科研业务费(2010JBZ006)资助项目
关键词 香豆素6 荧光 杂化纳米颗粒 浓度猝灭 Coumarin 6 fluorescence hybrid nanoparticles concentration quenching
  • 相关文献

参考文献7

  • 1T. G. Movchan,T. V. Khamova,O. A. Shilova,Yu. A. Plachev,N. P. Sokolova,A. M. Gorbunov,V. A. Sazhnikov.Influence of the composition and structure of epoxy siloxane matrix on the spectral behavior of the nile red dye: II. Sol-gel system based on tetraethoxysilane and glycidoxypropyltrimethoxysilane[J]Glass Physics and Chemistry,2009(2).
  • 2Suzanne Fery-Forgues,Rami El-Ayoubi,Jean-Fran?ois Lamère.Fluorescent Microcrystals Obtained from Coumarin 6 Using the Reprecipitation Method[J]Journal of Fluorescence,2008(3).
  • 3M S A Abdel-Mottaleb,M S Antonious,M M Abo Ali,L F M Ismail,B A El-Sayed,A M K Sherief.Photophysics and dynamics of coumarin laser dyes and their analytical implications[J]Proceedings of the Indian Academy of Sciences - Chemical Sciences,1992(2).
  • 4Ashim Kumar Dutta,Kenji Kamada,Koji Ohta.Spectroscopic studies of nile red in organic solvents and polymers[J]Journal of Photochemistry & Photobiology A: Chemistry,1996(1).
  • 5Raghu Nath Bera,Youichi Sakakibara,Shuji Abe,Kiyoshi Yase,Madoka Tokumoto.Time-resolved photoluminescence study on concentration quenching of a red emitting tetraphenylchlorin dye for organic electroluminescent devices[J]Synthetic Metals,2005(1).
  • 6杜渭松,高潮,邱少君.宽发射聚芴衍生物的合成及其光谱特性[J].液晶与显示,2011,26(1):1-4. 被引量:4
  • 7IAU Yi,CUI Tian-hong.Organic optoelectronics:materials,devices and applications[J].光学精密工程,2005,13(5):525-534. 被引量:1

二级参考文献59

  • 1Burroughes J H, Bradley D D, Brown A R, etal. Light-emitting diodes based on conjugated polymers[J]. Nature, 1990, 347(6293) :539-541.
  • 2Zheng J R, He G F, Yang C H, et al. Synthesis and properties of alkyl-substituted poly(1,4-phenylenevinylene) derivatives[J]. J. Appl. Polym. Sci., 2001, 80(8):1299-1304.
  • 3Zhou E J, Hou J H, Yang C H, et al. Synthesis and properties of polythiophenes with conjugated side-chains containing carbon-carbon double and triple bonds[J]. J. Polymer Science :Part A : Polymer Chemistry, 2006, 44(7) : 2206-2214.
  • 4Jiang J X, Jiang C Y, Yang W, et al. High- efficiency electrophosphorescent fluorene-alt-carbazole copolymers Ngrafted with eyclometalated Ir complexes[J]. Macromolecules, 2005, 38(10) : 4072-4080.
  • 5Yang W, Hou Q, Liu C Z, et al. Improvement of color purity in blue-emitting polyfluorene by copolymerization with dibenzothiophene[J]. J. Mater. Chem. , 2003, 13(8) :1351-1355.
  • 6Zhou Q M, Hou Q, Zheng L P, et al. Fluorene-based low band-gap copolymers for high performance photovoltaic devices[J]. Appl. Phys. Lett. , 2004, 84(10):1653-1655.
  • 7Wang E G, Wang L, Lan L F, et al. High-performance polymer heterojunction solar cells of a polysilafluorene derivative[J]. Appl. Phys. Lett., 2008,92(3):033307(1-3).
  • 8Hou Q, Zhou Q M, Zhang Y, et al. Synthesis and electroluminescent properties of high-efficiency saturated red emitter based on copolymers from fluorine and 4,7-di(4-hexylthien-2-yl)-2,1,3-benzothiadiazole[J]. Macromolecules, 2004, 37(17):6299-6305.
  • 9Guo X, Qin C J, Chen Y X, etal. White electroluminescence from a phosphonate-functionalized single-polymer system with electro-trapping effect[J]. Adv. Mater. , 2009, 21(36) :3682-3688.
  • 10Mei C Y, Ding J Q, Yao Bing, etal. Synthesis and characterization of white-light-emitting polyfluorenes containing orange phosphorescent moieties in the side chain[J]. J. Polymer Science : Part A : Polymer Chemistry, 2007, 45 (9):1746-1757.

共引文献3

同被引文献11

引证文献1

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部