Premium
Synthesis, Crystal Structure, and Visible Light Responses of Ti 4 Cu 4 ‐Oxo Clusters with Mixed Valence Copper Ions
Author(s) -
Hou Simin,
Chen Shumei,
Zhang Jian,
Zhang Lei
Publication year - 2020
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201900386
Subject(s) - chemistry , photocurrent , valence (chemistry) , copper , x ray photoelectron spectroscopy , visible spectrum , absorption spectroscopy , ion , crystallography , titanium , spectroscopy , single crystal , crystal structure , nuclear magnetic resonance , optics , physics , organic chemistry , quantum mechanics
Summary of main observation and conclusion In order to extend the absorption spectrum of polyoxo‐titanium clusters into the visible region, two new heterometal‐oxo clusters Ti 4 Cu II 2 Cu I 2 (μ 3 ‐O) 6 (benzoate) 10 (MeCN) 4 ( PTC‐153 ) and Ti 4 Cu II 2 Cu I 2 (μ 3 ‐O) 6 (benzoate) 8 (CH 3 COO) 2 (MeCN) 4 ( PTC‐154 ) were successfully synthesized. Single‐crystal X‐ray diffraction and X‐ray photoelectron spectroscopy studies showed that these two heterometallic Ti 4 Cu 4 ‐oxo clusters possessed Chinese knot‐shape structure and mixed valence Cu 1+/2+ ions. UV‐visible spectroscopy analysis demonstrated that the visible light region absorption of PTC‐153 and PTC‐154 could be significantly enhanced by doping copper. Furthermore, their visible‐light driven photocurrent responses were studied by using samples of PTC‐153 and PTC‐154 as electrode precursors.