Achieving white light emission using melamine–formaldehyde microcapsules containing three fluorescence color-emitting conjugated polymers

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE

Macromolecular Research Pub Date : 2024-02-28 DOI:10.1007/s13233-024-00248-8

Geun Tae Pak, Seonyoung Jo, Taek Seung Lee

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Abstract

Fluorescent conjugated polymers (CPs) emitting blue, green, and red were polymerized via the Suzuki coupling reaction. Their emissive monomer units were linked to a fluorene unit in the backbone and thus could be excited at the same wavelength to fluoresce their own emission colors. The resultant polymers were dissolved in dioctyl phthalate, which was embedded in melamine–formaldehyde microcapsules (MFMs). The CP-embedded MFMs maintained the red, green, and blue emission colors of the CPs. The three fluorescent MFMs were mixed in suitable amounts to fabricate white light-emitting MFMs under single-wavelength excitation. The microcapsule embedment could effectively avoid the unnecessary energy transfer from short- to long-wavelength emission, which is a crucial obstacle for white emission when using mixed colors. Thus, white light emission was successfully obtained using spatially separated MFMs in aqueous solution.

Graphical Abstract

White light emission was performed using spatially separated RGB conjugated polymers embedded in melamine-formaldehyde microcapsules.

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利用含有三种荧光彩色发光共轭聚合物的三聚氰胺-甲醛微胶囊实现白光发射

摘要通过铃木偶联反应聚合了可发出蓝色、绿色和红色的荧光共轭聚合物（CPs）。它们的发射单体单元与主链中的芴单元相连，因此可在相同波长下激发出各自的发射色荧光。将得到的聚合物溶解在邻苯二甲酸二辛酯中，然后嵌入三聚氰胺-甲醛微胶囊（MFM）中。嵌入氯化石蜡的 MFM 保持了氯化石蜡的红色、绿色和蓝色发射色。在单波长激发下，将这三种荧光 MFMs 以适当的量混合在一起，制成了白光发光 MFMs。微胶囊的嵌入可以有效避免不必要的能量从短波发射到长波发射的转移，而这正是使用混合色时白光发射的关键障碍。因此，在水溶液中使用空间分离的 MFM 成功地获得了白光发射。图文摘要利用空间分离的 RGB 共轭聚合物嵌入三聚氰胺-甲醛微胶囊，实现了白光发射。

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.