| poly(3,4-HBA-Cr-FDA)2011 · Synthesis and characterization of a novel kind soluble, conjugated, and fluorescent chelate polymer containing fluorene ring in the backbone: Optical, electrical, and electrochemical properties | Not specifiedCr(III) ions coordinated by catecholate/phenolate oxygen donors from 3,4-dihydroxybenzaldehyde-derived units · 9,9'-bis(4-aminophenyl)fluorene (FDA) condensed with Cr-coordinated 3,4-dihydroxybenzaldehyde (3,4-HBA) units to form azomethine linkages | 1D · PristineLinear conjugated chelate/coordination polymer assigned from Scheme 1-2, FT-IR Cr-O and imine bands, NMR, SEC molecular weight, and red-shifted UV-vis spectra; no crystalline MOF framework or porosity is reported. | 13-16 · Abstract; 2.2. Syntheses of the compounds; 3.1. Solubility and structures · Scheme 1; Scheme 2 |