A Cationic Coordination Polymer and Its Orange II Anion-Exchanged Products: Isolation, Structural Characterization, Photocurrent Responses, and Dielectric Properties

Abstract

Solvothermal reactions of AgNO with N,N-bis(5-fluoropyridin-3-yl)succinamide (bfps) in MeCN afforded the one-dimensional cationic coordination polymer {[Ag(bfps)]NO} (1). Upon treatment of 1 with the anionic azo dye orange II (NaOII) in aqueous solution, the NO anions of 1 could be gradually exchanged by the OII anions via an anion-exchange process. The resulting OII anion-exchanged products {[Ag(bfps)](NO)(OII)} (2) and {[Ag(bfps)](NO)(OII)} (3) were formed by different molar ratios of 1 and the newly formed phase "{[Ag(bfps)](OII)}" (4), confirmed by PXRD patterns. Relative to those of the precursors 1 and NaOII, complexes 2 and 3 demonstrated enlarged photocurrent responses and reduced dielectric constants and dielectric losses, which could be correlated with the OII contents in their structures. Complex 3 acquired a stable anodic photocurrent of 12.06 μA, which was 4.9 times higher than that of 1. The dielectric constant (ε = 4.2) and dielectric loss (0.002) of 3 were nearly frequency independent in the range from 1 to 10 Hz. The results provide an interesting insight into the rational assembly of CP-dye complexes and their tunable optoelectronic applications.

Metal-Organic Gels of Catechol-Based Ligands with Ni(II) Acetate for Dye Adsorption

“…It can also be seen from the Table that the ability of dye adsorption of MOG2 is better than that of MOG1. There have been many literature reports on dye adsorption every year. − The MOGs have advantages on adsorption efficiency and diversity as well as material costs.…”

Two 2D Zinc(II) Coordination Polymers and Their Orange IV Composites: Preparation, Structures, and Photocurrent Responses

“…Recently we have found that some one-dimensional (1D) CPs showed excellent adsorption capacities toward organic dyes, and the resultant CP-dye composites displayed better electronic performances. For example, the 1D CP {[Ag­( bfps )]­NO 3 } n ( bfps = N 1 , N 4 -bis­(5-fluoropyridin-3-yl)­succinamide) (Scheme ) could absorb Orange II (OII) with a capacity of 662 mg·g –1 ) . The as-prepared CP-OII composite demonstrated enhanced photocurrent responses and improved dielectric properties relative to those of the parent CP.…”

“…For example, the 1D CP {[Ag-(bfps)]NO 3 } n (bfps = N 1 ,N 4 -bis(5-fluoropyridin-3-yl)succinamide) (Scheme 1) could absorb Orange II (OII) with a capacity of 662 mg•g −1 ). 48 The as-prepared CP-OII composite demonstrated enhanced photocurrent responses and improved dielectric properties relative to those of the parent CP. The preliminary results encouraged us to expand the 1D CPs into higher dimensional structures which might have diversiform topologies and better thermal and water stabilities.…”

“…Orange IV is one of the typical model compounds in polluted water treatment and has been used to improve the photovoltaic performance of some semiconductive materials such as ZnO . To date, although many CPs may exhibit interesting semiconductive performances, the electronic properties by CP–dye composites are less investigated. − …”

New Silver(I)‐P4 Coordination Polymers Strongly Adsorb Congo Red to Yield Composites with Enhanced Photocurrent Responses

“…[15,16] Many CPs absorb organic dyes and the resulting composites exhibit improved photoelectric responses. [17,18] For example, a one dimensional (1D) CP of Zn(II), 1,2,3-BTA (1,2,3-benzenetricarboxylate) and N,N'-di(3-pyridyl)succinamide showed superior Congo Red (CR) sorption up to 1129 mg/g, and the resulting composite exhibited a remarkably enhanced photocurrent response. [17] Scientists usually aim to maximize the uptake of dye and thereby to maximize photocurrent, but without specifically designing for this parameter.…”