Materials with blue-shifted and enhanced emission exhibit extensive applications in information encryption,solar ultraviolet sensing and ink-free printing,however,preparing blue-shifted and enhanced emission from phot...Materials with blue-shifted and enhanced emission exhibit extensive applications in information encryption,solar ultraviolet sensing and ink-free printing,however,preparing blue-shifted and enhanced emission from photo-responsive material remains a significant challenge.Herein,we designed and synthesized successfully the photo-responsive ionic-bonded organic crystals(IOC)using tetraphenylethylene(TPE)-based multidentate imidazolium salt and sulfonic acid.Impressively,the discernible response of IOC to UV light is evidenced by a blue shift and an enhancement in dilute solution.Specifically,this has resulted in a significant increase in the absolute quantum yield,from 7.0%to 41.3%.This remarkable efficiency can be attributed to the cooperative effect that reduces non-radiative processes,the restriction of intermolecular motions(RIM)and the modulation of charge transfer(CT)behavior.This work first reports blue-shifted and enhanced emission from ionic crystal,providing a new strategy to achieve photochromic materials.展开更多
基金the Gansu Natural Science Foundation(No.21JR7RA076)LICP Cooperation Foundation for Young Scholars(No.HZJJ23-6)for financial support。
文摘Materials with blue-shifted and enhanced emission exhibit extensive applications in information encryption,solar ultraviolet sensing and ink-free printing,however,preparing blue-shifted and enhanced emission from photo-responsive material remains a significant challenge.Herein,we designed and synthesized successfully the photo-responsive ionic-bonded organic crystals(IOC)using tetraphenylethylene(TPE)-based multidentate imidazolium salt and sulfonic acid.Impressively,the discernible response of IOC to UV light is evidenced by a blue shift and an enhancement in dilute solution.Specifically,this has resulted in a significant increase in the absolute quantum yield,from 7.0%to 41.3%.This remarkable efficiency can be attributed to the cooperative effect that reduces non-radiative processes,the restriction of intermolecular motions(RIM)and the modulation of charge transfer(CT)behavior.This work first reports blue-shifted and enhanced emission from ionic crystal,providing a new strategy to achieve photochromic materials.
