title: Luminescence thermochromism of two entangled copper-iodide networks with a large temperature-dependent emission shift.
abstract: The luminescence thermochromism properties of two entangled copper(I)-iodide coordination polymers formulated [Cu4I4(dmimpr)2]n (1) and [Cu6I6(dimb)3]n (2) (dmimpr = 1,3-di(2-methyl-imidazol-1-yl)propane, dimb = 1,4-di(imidazol-1-yl)butane) are reported. Upon cooling by liquid nitrogen, their solid-state luminescences at room temperature are drastically changed with the large red-shifts of 41 and 78 nm for 1 and 2, respectively. The correlation between luminescence thermochromism and temperature-dependent variation of the Cu···Cu distance is also elucidated.
authors.affiliation: Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, PR China. dsun@sdu.edu.cn
authors.forename: Di
authors.initials: D
authors.lastname: Sun
authors.forename: Shuai
authors.initials: S
authors.lastname: Yuan
authors.forename: Hua
authors.initials: H
authors.lastname: Wang
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Lu
authors.forename: Sheng-Yu
authors.initials: SY
authors.lastname: Feng
authors.forename: Dao-Feng
authors.initials: DF
authors.lastname: Sun