D-A type molecule with phthalimide as acceptor, preparation method, evaluation method and use of excited state dynamics

By preparing D-A molecules with phthalimide as the receptor and using a variety of spectral techniques, the excitation state dynamics of their in-depth study was solved, and the basic properties of phthalimide molecules were revealed, the charge separation and solvation process was revealed, and the development of high-performance materials was promoted.

CN116410122BActive Publication Date: 2025-07-29DALIAN UNIV OF TECH
0 Cites 0 Cited by

Patent Information

Application Number
CN202310349930.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-04
Publication Date
2025-07-29
Estimated Expiration
2043-04-04

AI Technical Summary

Technical Problem

In the prior art, the basic properties of D-A molecules with phthalimide as receptors are far behind applied research, affecting the possibility of material development, and the research on the excited state evolution channels and their dynamics within the molecule is not in-depth enough.

Method used

D-A molecules with phthalimide as the receptor were prepared, compounds were synthesized through specific chemical reactions, and their excited state process was monitored using time-resolved spectroscopy technology, including ultraviolet-visible spectrophotometers, fluorescence spectrometers, electrochemical workstations, time-related single-photon counting technology and femtosecond pump-detection technology, etc., to conduct in-depth research on the impact of electron-supply capacity and solvent polarity on the exciting state dynamics.

Benefits of technology

Through steady-state spectroscopy testing and electrochemical research, the thermodynamic allowability of the charge separation process is revealed. The femtosecond transient absorption spectrum shows that the charge separation, solvation and structural relaxation processes change with the polarity of the solvent. The nanosecond transient absorption spectrum shows that the formation of triplet states depends on the electron-delivery capacity, providing an in-depth understanding of the dynamics of photoexcited states and helping to develop efficient triplet photosensitizers and organic sensor materials.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The present invention discloses a D-A type molecule with phthalimide as the acceptor, a preparation method, an evaluation method for excited state dynamics and uses thereof. The D-A type molecule with phthalimide as the acceptor is based on phthalimide as the acceptor and carbazole and its derivatives as donors to prepare three compact D-A binary groups. Through structural characterization and related performance analysis and testing of the D-A type molecule with phthalimide as the acceptor, the photoexcited state dynamics of dense electron donor-acceptor compounds is deeply understood, which is of great significance for designing highly efficient heavy-atom-free triplet photosensitizers and developing high-performance organic sensors, dye-sensitized solar cells and other materials. A D-A type molecule with phthalimide as the acceptor, a preparation method and an evaluation method for excited state dynamics disclosed by the present invention provide several D-A type molecules with phthalimide as the acceptor, and study the influence of the electron-donating ability and solvent polarity on the excited state dynamics of the D-A type molecules.
Need to check novelty before this filing date? Find Prior Art