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전기방사에 의한 재기록 가능한 자외선 응답형 폴리카프로락톤 패턴
Fabrication of Rewritable Pattern Images with Ultraviolet-responsive Polycaprolactone Electrospun Fibers
샴샤드알리 ( Shamshad Ali ) , 파르크아흐메드 ( Farooq Ahmed ) , 지산카트리 ( Zeeshan Khatri ) , 김성훈 ( Seong Hun Kim )
UCI I410-ECN-0102-2015-500-002009461
* 발행 기관의 요청으로 구매가 불가능한 자료입니다.

For the first time, the photochromic spiropyran dye [1’-3’-dihydro-1’,3’,3’-trimethyl-6-nitrospiro [2H-1-benzopyran-2,2’-(2H)-indole] (indole) was successfully embedded as a guest molecule into the poly(ε-caprolactone) (PCL) host polymer matrix via the electrospinning technique. The resulting PCL/Indole electrospun fibers exhibit photo-switchable properties without losing depth of color upon alternate irradiation with ultraviolet (UV) and visible light. We found that patterned color images could be recorded on the photochromic PCL/Indole electrospun fiber mats using photo-masked UV irradiation. Subsequent irradiation of the mat with visible light completely erased the recorded patterned color image. The transformation of indole from the colorless form to the colored form upon UV irradiation was confirmed by UV-visible spectrophotometry, fluorescence micrography, and water contact angle measurements. Field emissionscanning electron microscopy images revealed the smooth morphology of the PCL/Indole electrospun fibers. Additionally, the average diameter of the PCL/Indole electrospun fibers was significantly lower than that of the PCL electrospun fibers. Good to excellent ratings were achieved for the washing fastness of the PCL/Indole electrospun fiber mats.

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusion
Acknowledgements
References
[자료제공 : 네이버학술정보]
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