Nandi, RP and Kalluvettukuzhy, NK and Pagidi, S and Thilagar, P (2022) Molecular Persistent Room-Temperature Phosphorescence from Tetraarylaminoboranes. In: Inorganic Chemistry, 62 (3). pp. 1122-1134.
![]() |
PDF
ino_che_62-3_1122-1134_2023.pdf - Published Version Restricted to Registered users only Download (6MB) | Request a copy |
Abstract
Herein, we report the synthesis, molecular structure, and optical features of tetrarylaminoboranes 1 (Mes2B-N(Ph)(C10H7)) and 2 (Mes2B-N(Ph)(C14H9)). In the solution state, 1 shows aggregation-induced emission enhancement and color switching, while 2 displays emission color switching and aggregation-caused quenching. At 77 K, frozen solutions of 1 show delayed fluorescence (DF) and phosphorescence, whereas 2 display only DF. Pristine solids of 1 and 2 showed delayed fluorescence under ambient conditions; however, crystals of both compounds show no phosphorescence under similar conditions. Polymethyl methacrylate thin films of 1 (1 wt % doping concentration) exhibit persistent room-temperature phosphorescence (pRTP) lasting for ∼0.5 s. In contrast, 2 does not show phosphorescence under similar conditions. Systematic photophysical studies and theoretical (DFT and TD-DFT) calculations are performed on these molecules to rationalize their intriguing optical characteristics. © 2023 American Chemical Society.
Item Type: | Journal Article |
---|---|
Publication: | Inorganic Chemistry |
Publisher: | American Chemical Society |
Additional Information: | The copyright for this article belongs to American Chemical Society. |
Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
Date Deposited: | 09 Feb 2023 11:23 |
Last Modified: | 09 Feb 2023 11:23 |
URI: | https://eprints.iisc.ac.in/id/eprint/80126 |
Actions (login required)
![]() |
View Item |