4.8 Article

Isomer Selective Thermosalience and Luminescence Switching in Organic Crystals

Journal

ACS APPLIED MATERIALS & INTERFACES
Volume -, Issue -, Pages -

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c05053

Keywords

boron complex; charge transfer; dynamic crystals; polymorphism; thermosalience

Funding

  1. Institute of Nano Science and Technology, Mohali

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In this study, molecular engineering was used to transform simple naphthalidenimine-boron complexes into functional materials with thermosalience and thermal-luminescence switching properties. Crystallographic and spectroscopic investigations revealed the role of subtle molecular parameters in facilitating charge-transfer interactions.
Organic crystals that respond to external stimuli are interesting for the design of smart materials. Here, we show that molecular engineering can transform simple naphthalidenimine-boron complexes- known for their exciting photophysical properties-into functional materials that exhibit thermosalience and thermal-luminescence switching. Detailed crystallographic and spectroscopic investigations revealed the role of subtle molecular parameters in deciphering charge-transfer interactions, which in turn imparted dynamic properties to the crystals. The simultaneous observation of thermally induced jumping and luminescence switching makes these crystals ideal for optoelectronic applications.

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