Solvent modulation of the morphology of homochiral gadolinium coordination polymers and its impact on circularly polarized luminescence

Ting Hou; Chen-Chen Zhao; Song-Song Bao; Zhi-Min Zhai; Li-Min Zheng

doi:10.1039/d3dt03735e

Solvent modulation of the morphology of homochiral gadolinium coordination polymers and its impact on circularly polarized luminescence

Dalton Trans. 2024 Feb 27;53(9):4291-4298. doi: 10.1039/d3dt03735e.

Authors

Ting Hou¹, Chen-Chen Zhao², Song-Song Bao¹, Zhi-Min Zhai¹, Li-Min Zheng¹

Affiliations

¹ State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China. lmzheng@nju.edu.cn.
² Theoretical and Computational Chemistry Institute, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China.

PMID: 38345325
DOI: 10.1039/d3dt03735e

Abstract

Studying the effect of morphology on the circularly polarized luminescence (CPL) of chiral molecular materials is important for the development of CPL-active materials for applications. Herein, we report that the morphology of Gd(NO₃)₃/R-,S-AnempH₂ [AnempH₂ = (1-anthrylethylamino)methylphosphonic acid] assemblies can be controlled by solvent modulation to form spiral bundles Gd(R-,S-AnempH)₃·2H₂O (R-,S-1), crystals Gd(R-,S-AnempH)₃·2H₂O (R-,S-2) and spindle-shaped particles Gd(R-,S-AnempH)₃·3H₂O·0.5DMF (R-,S-3) with similar chain structures. Interestingly, R-,S-1 are CPL active and show the highest value of dissymmetric factor among the three pairs of enantiomers (|g_lum| = 2.1 × 10^-3), which is 2.8 times larger than that of R-,S-2, while R-,S-3 are CPL inactive with |g_lum| ≈ 0. This work provides a new route to control the morphology of chiral coordination polymers and improve their CPL performance.