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[1]李梦肖,张 欢,林仰举,等.一种基于罗丹明衍生物的力致变色力敏团[J].厦门大学学报(自然科学版),2018,57(04):447-454.[doi:10.6043/j.issn.0438-0479.201709014]
 LI Mengxiao,ZHANG Huan,LIN Yangju,et al.A Novel Mechanochromic Mechanophore Based on a Rhodamine Derivative[J].Journal of Xiamen University(Natural Science),2018,57(04):447-454.[doi:10.6043/j.issn.0438-0479.201709014]
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一种基于罗丹明衍生物的力致变色力敏团(PDF/HTML)
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《厦门大学学报(自然科学版)》[ISSN:0438-0479/CN:35-1070/N]

卷:
57卷
期数:
2018年04期
页码:
447-454
栏目:
研究论文
出版日期:
2018-07-31

文章信息/Info

Title:
A Novel Mechanochromic Mechanophore Based on a Rhodamine Derivative
文章编号:
0438-0479(2018)04-0447-08
作者:
李梦肖张 欢林仰举曾德智潘亦菲翁文桂*
厦门大学化学化工学院,福建 厦门 361005
Author(s):
LI MengxiaoZHANG HuanLIN YangjuZENG DezhiPAN YifeiWENG Wengui*
College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China
关键词:
力敏团 力致变色 罗丹明
Keywords:
mechanophore mechanochromism rhodamine
分类号:
O 631.3
DOI:
10.6043/j.issn.0438-0479.201709014
文献标志码:
A
摘要:
为了探测聚合物材料受力时的损伤和断裂机理,延长材料的使用寿命和耐久度,将一种基于罗丹明衍生物的力致变色力敏团共价连接到聚甲基丙烯酸甲酯(PMA)中,并通过溶液超声、固体压缩、紫外-可见吸收光谱和荧光光谱对其力致变色性能进行了表征.结果显示,含罗丹明力敏团的PMA受力后从无色转变为红色,其550 nm处的紫外-可见吸收峰和567 nm处的荧光发射峰强度均明显提升,这种转变可通过加热(70 ℃)恢复到初始状态,且能够多次重复.以上实验结果可通过外力诱导的罗丹明力敏团开环反应和加热导致的逆反应加以解释.结果表明合成的罗丹明力敏团是一类较为理想的损伤探测力敏团,可用于力响应材料的开发.
Abstract:
Stress-sensing in polymeric materials is important to prevent destructive failure,interpret failure mechanism,and improve the lifetime and durability of the product.In this study,a mechanochromic mechanophore based on a rhodamine derivative was synthesized,and the mechanophore was covalently linked to poly(methyl acrylate)(PMA).Then its mechanochromic properties were investigated by ultrasound sonication,compression,UV-vis and fluorescence spectroscopies.Under mechanical force,the rhodamine-containing PMA changed from colorless to pink(activation),accompanying the increase of absorption at 550 nm and fluorescence intensity at 567 nm,while the pink color faded upon heating at 70 ℃,and such an activation-fading of color were repeatable.These results could be interpreted as a consequence of force-induced ring-opening and heat-induced ring-closure reactions of rhodamine mechanophore.The results showed that the rhodamine mechanophore could be an ideal force-probe for stress-sensing applications and stress-responsive polymers.

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备注/Memo

备注/Memo:
收稿日期:2017-09-15 录用日期:2017-11-20
基金项目:国家自然科学基金(21574108)
*通信作者:wgweng@xmu.edu.cn
引文格式:李梦肖,张欢,林仰举,等.一种基于罗丹明衍生物的力致变色力敏团[J].厦门大学学报(自然科学版),2018,57(4):447-454.
Citation:LI M X,ZHANG H,LIN Y J,et al.A novel mechanochromic mechanophore based on a rhodamine derivative[J].J Xiamen Univ Nat Sci,2018,57(4):447-454.(in Chinese)
更新日期/Last Update: 1900-01-01