Mingzhi Chen, Huan Hu, Xin Cheng, Yu Wu, Zhimin Ma, Rint P. Sijbesma, Zhiyong Ma
{"title":"超灵敏浓度依赖性激发态分子内质子转移机理团产生的多色聚合物机理色度","authors":"Mingzhi Chen, Huan Hu, Xin Cheng, Yu Wu, Zhimin Ma, Rint P. Sijbesma, Zhiyong Ma","doi":"10.1002/adom.202400733","DOIUrl":null,"url":null,"abstract":"An ultrasensitive concentration‐dependent ESIPT mechanochromic mechanophore (MM) NaMz (4‐amino‐2‐(1<jats:italic>H</jats:italic>‐naphtho[2,3‐<jats:italic>d</jats:italic>]imidazol‐2‐yl)phenol), which exhibits real‐time and reversible multicolor mechanochromism in polyurethane is reported. NaMz has one single link point and can be obtained facilely by one‐step reaction. As the concentration of NaMz increased from 0.01 to 0.05 mol%, the intensity ratio IE/IK of enol emission to keto emission changed significantly and concentration‐dependent multicolor fluorescence (yellow, white, blue) can be realized. Then, a simple strategy, force‐tuning the aggregation state of NaMz molecules, to adjust the ESIPT process to achieve ultrasensitive colorful mechanochromism is proposed. Intriguingly, force‐tuned white light emitting can be realized for 0.035 mol%NaMz@PU. Because the extended conjugation structure, NaMz@PU shows a red‐shifted keto emission at 541 nm with a larger Stoke shift compared with PhMz‐NH2@PU, which is also the key to multicolor concentration‐dependent polymer mechanochromism of NaMz@PU. Control experiments of NaMz‐OH@PU and NaMz‐3OH@PU show that the aliphatic hydroxyl group on the naphthimidazole moiety impedes the planarization of molecular structure and thus hinders aggregation, further verifying that the multicolor concentration‐dependent mechanochromism of NaMz@PU is indeed caused by force induced disaggregation. The excellent color‐changing effect, real‐time reversible force‐optical coupling and precise regulation of this study will make a new contribution to polymer mechanochemistry.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":null,"pages":null},"PeriodicalIF":8.0000,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Multicolor Polymer Mechanochromism from an Ultrasensitive Concentration‐Dependent Excited State Intramolecular Proton Transfer Mechanophore\",\"authors\":\"Mingzhi Chen, Huan Hu, Xin Cheng, Yu Wu, Zhimin Ma, Rint P. Sijbesma, Zhiyong Ma\",\"doi\":\"10.1002/adom.202400733\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An ultrasensitive concentration‐dependent ESIPT mechanochromic mechanophore (MM) NaMz (4‐amino‐2‐(1<jats:italic>H</jats:italic>‐naphtho[2,3‐<jats:italic>d</jats:italic>]imidazol‐2‐yl)phenol), which exhibits real‐time and reversible multicolor mechanochromism in polyurethane is reported. NaMz has one single link point and can be obtained facilely by one‐step reaction. As the concentration of NaMz increased from 0.01 to 0.05 mol%, the intensity ratio IE/IK of enol emission to keto emission changed significantly and concentration‐dependent multicolor fluorescence (yellow, white, blue) can be realized. Then, a simple strategy, force‐tuning the aggregation state of NaMz molecules, to adjust the ESIPT process to achieve ultrasensitive colorful mechanochromism is proposed. Intriguingly, force‐tuned white light emitting can be realized for 0.035 mol%NaMz@PU. Because the extended conjugation structure, NaMz@PU shows a red‐shifted keto emission at 541 nm with a larger Stoke shift compared with PhMz‐NH2@PU, which is also the key to multicolor concentration‐dependent polymer mechanochromism of NaMz@PU. Control experiments of NaMz‐OH@PU and NaMz‐3OH@PU show that the aliphatic hydroxyl group on the naphthimidazole moiety impedes the planarization of molecular structure and thus hinders aggregation, further verifying that the multicolor concentration‐dependent mechanochromism of NaMz@PU is indeed caused by force induced disaggregation. The excellent color‐changing effect, real‐time reversible force‐optical coupling and precise regulation of this study will make a new contribution to polymer mechanochemistry.\",\"PeriodicalId\":116,\"journal\":{\"name\":\"Advanced Optical Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2024-07-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Optical Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1002/adom.202400733\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Optical Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/adom.202400733","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Multicolor Polymer Mechanochromism from an Ultrasensitive Concentration‐Dependent Excited State Intramolecular Proton Transfer Mechanophore
An ultrasensitive concentration‐dependent ESIPT mechanochromic mechanophore (MM) NaMz (4‐amino‐2‐(1H‐naphtho[2,3‐d]imidazol‐2‐yl)phenol), which exhibits real‐time and reversible multicolor mechanochromism in polyurethane is reported. NaMz has one single link point and can be obtained facilely by one‐step reaction. As the concentration of NaMz increased from 0.01 to 0.05 mol%, the intensity ratio IE/IK of enol emission to keto emission changed significantly and concentration‐dependent multicolor fluorescence (yellow, white, blue) can be realized. Then, a simple strategy, force‐tuning the aggregation state of NaMz molecules, to adjust the ESIPT process to achieve ultrasensitive colorful mechanochromism is proposed. Intriguingly, force‐tuned white light emitting can be realized for 0.035 mol%NaMz@PU. Because the extended conjugation structure, NaMz@PU shows a red‐shifted keto emission at 541 nm with a larger Stoke shift compared with PhMz‐NH2@PU, which is also the key to multicolor concentration‐dependent polymer mechanochromism of NaMz@PU. Control experiments of NaMz‐OH@PU and NaMz‐3OH@PU show that the aliphatic hydroxyl group on the naphthimidazole moiety impedes the planarization of molecular structure and thus hinders aggregation, further verifying that the multicolor concentration‐dependent mechanochromism of NaMz@PU is indeed caused by force induced disaggregation. The excellent color‐changing effect, real‐time reversible force‐optical coupling and precise regulation of this study will make a new contribution to polymer mechanochemistry.
期刊介绍:
Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.