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聊城大学 物理科学与信息工程学院, 山东省光通信科学与技术重点实验室,山东 聊城,252059
纸质出版日期:2016-3-5,
收稿日期:2015-11-8,
修回日期:2015-12-16,
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高学喜, 王文军, 刘云龙等. 螺芴氧杂蒽LB膜的制备及光谱特性研究[J]. 发光学报, 2016,37(3): 315-320
GAO Xue-xi, WANG Wen-jun, LIU Yun-long etc. Preparation and Spectral Properties of Spirofluorene Oxygen Complex LB Films[J]. Chinese Journal of Luminescence, 2016,37(3): 315-320
高学喜, 王文军, 刘云龙等. 螺芴氧杂蒽LB膜的制备及光谱特性研究[J]. 发光学报, 2016,37(3): 315-320 DOI: 10.3788/fgxb20163703.0315.
GAO Xue-xi, WANG Wen-jun, LIU Yun-long etc. Preparation and Spectral Properties of Spirofluorene Oxygen Complex LB Films[J]. Chinese Journal of Luminescence, 2016,37(3): 315-320 DOI: 10.3788/fgxb20163703.0315.
为了研究聚芴材料DSFX-SFX分子在气液两相表面的行为
分子处于溶液、LB膜及粉末状态的光学特性
以及分子有序排列对其发光特性的影响
制备了聚芴材料DSFX-SFX的X型LB膜
研究了-A等温曲线
测量了其紫外-可见吸收谱和稳态荧光光谱。结果表明
分子以face-on形式平躺在亚相表面
单分子面积为4.78 nm
2
。在氯仿溶液中吸收峰位在354 nm
归属于分子中三聚氧杂蒽部分与芴环间-
*
电子跃迁;荧光发射峰位在396
419
445 nm(肩峰)
归属于发色团三聚氧杂蒽
是芴环与氧杂蒽环之间的电荷转移。在LB膜中
吸收谱和荧光光谱与其溶液光谱相比
整体红移6 nm。结果表明:在LB膜中
两个分子形成激基缔合物
与单分子状态相比
激基缔合物的HOMO升高而LUMO降低。与粉末状态相比
该材料在LB膜中有很强的荧光发射
表明该材料形成有序排列超薄膜有利于荧光发射。
In order to study the behavior of polyfluorene DSFX-SFX molecule in the air-water interface
the spectroscopic characteristics
and the effect of the orderly arrangement of molecular on the luminescence properties
Langmuir-Blodgett(LB) films of the polyfluorene DSFX-SFX were prepared. The -A isothermal curve was studied
and the UV-Vis absorption and steady-state fluorescence spectra were measured. The experimental results show that the molecules lie flat on the subphase surface in the form of face-on. The single molecular area is 4.78 nm
2
. In chloroform solution
the absorption peak is at 354 nm
which belongs to -
*
electronic transition of the oxygen mixing into fluorene ring. The fluorescent emission peaks are at 396
419
and 445 nm (shoulder)
respectively. This is due to the emission of trimeric oxa anthracene
and the charge transfer between the fluorene ring and oxygen impurity anthracene ring. In LB film
the fluorescence spectra have an overall red-shifted of 6 nm. This is due to formation of an excimer
leading to the elevated HOMO and the reduction of LUMO. The orderly arrangement in ultra-thin film is propitious to blue fluorescence emission.
LB膜螺芴氧杂蒽荧光光谱
LB filmspirofluorene oxygen complexfluorescence spectra
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高学喜,王文军,刘云龙,等. 两种烷基取代喹吖啶酮衍生物LB膜的荧光特性研究 [J]. 光学学报, 2012, 32(7):0731002-1-6. GAO X X, WANG W J, LIU Y L, et al.. Fluorenscence spectra of two kinds of alkyl substitution quinacridone derivative Langmuir-Blodgett films [J]. Acta Opt. Sinica, 2012, 32(7):0731002-1-6. (in Chinese)
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