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

Min Zhang, Meng Yao Feng, Jia Jun Yan, Hai Yan Li, David James Young, Hong Xi Li, Zhi Gang Ren

Research output: Contribution to journalArticlepeer-review

Abstract

Reaction of tetraphosphine (P4) ligand dppbpda with Ag(I) oxylates yielded new coordination polymers (CPs) of formula [(dppbpda)Ag4(Ox)4]n (Ox=Bz (1), Sal (2), LA (3), Bz=benzoate, Sal=salicylate, LA=lactate). The solid-state structures of 1–3 consist of one dimensional (1D) chains constructed from tetranuclear μ-η22- connected Ag4(Ox)4 cluster cores and dppbpda bridging ligands. Compounds 1–3 absorbed Congo Red in two distinct steps, with maximum uptake quantities of 1438 (1), 1417 (2) and 1656 (3) mg/g, inversely correlating with the size of the anions in the CPs. These CPs had band gaps in the semiconducting region (Eg) 3.05–3.15 eV and all three showed enhanced two-peak photocurrent responses during the stepwise adsorption of CR, with maximum photocurrent densities of 227 (1), 163 (2) and 386 (3) μA cm−2 for composites with optimized dye coverage.

Original languageEnglish
Pages (from-to)2262-2265
Number of pages4
JournalEuropean Journal of Inorganic Chemistry
Volume2021
Issue number23
Early online date30 Apr 2021
DOIs
Publication statusPublished - 21 Jun 2021

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