Abstract
Limited works are reported about photochromism type room temperature phosphorescence luminogens (RTPs) owing to notorious quenching effect and lacking of reliable guidance. Here we have demonstrated an organic crystal (4-iodophenyl terpyridine) exhibiting photochromism and slowly spontaneous heat recovery. The photochromic crystal can be formed within a few minutes, and it once formed is stable for hours. Fortunately, the single crystals before and after photochromism are all analyzable and clearly indicate molecular conformation and packing structure change. It is deduced that photoactivation has induced single bond internal rotations and intermolecular slipping to form a metastable crystal with more planar molecular conformation and looser stacking. The different molecular conformation and packing structure have changed intermolecular interaction nature, which should be responsible for their different RTP properties.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
