Camphor-modified porphyrins: Near-infrared CPL emission at aggregation states

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-04-11 DOI:10.1016/j.jlumin.2025.121250

Liangbin Lin , Sining Zheng , Yun Li , Hongyu Guo , Fafu Yang

引用次数: 0

Abstract

The near-infrared dyes with high CPL properties in aggregated state were important but rarely reported. In this work, two camphor-modified porphyrins were designed and synthesized in high yields by the simple procedures. They exhibited good CPL properties in both solution and aggregation states. The absolute fluorescence quantum yields attained 0.16 and 0.18 in solid films. The biggest g_lum values of were as high as 2.08 × 10⁻² at 758 nm in THF/H₂O (5/95) and 1.70 × 10⁻² at 736 nm in solid state. This work suggested that the large volume chiral camphor groups not only have good chiral transfer effect for producing CPL emission for porphyrin moieties, but also possess large steric hindrance to reduce ACQ effect for achieving excellent CPL luminescence in aggregated states.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.