title: Coordination-Induced Syntheses of Two Hybrid Framework Iodides: A Thermochromic Luminescent Thermometer.
abstract: Two new 3D hybrid framework iodides, Hmta[(Hmta)Ag4I4] (1; Hmta = hexamethylenetetramine) and [(Hmta)2Ag8I6]I2 (2), have been synthesized under solvothermal conditions. Compound 1 consists of a neutral 3D framework built up from alternation of the tetrahedral Ag4I4 unit and Hmta with dia-b topology. Compound 2 features a 3D cationic framework with flu topology, constructed by cationic [Ag8I6](2+) units linked with Hmta. Tetrahedral Hmta plays crucial structure-directing roles in the formation of these 3D frameworks with high symmetry. The temperature-dependent photoluminescent measurement reveals luminescent thermochromism of the compounds, the emission maximum of which shows a gradual blue shift with increasing temperature. The results indicate that 1 is a promising wavelength- and intensity-dependent luminescent thermometer applicable in two different temperature ranges.
authors.affiliation: Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, China.
authors.forename: Ren-Chun
authors.initials: RC
authors.lastname: Zhang
authors.affiliation: Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, China.
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Wang
authors.affiliation: Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, China.
authors.forename: Jing-Chao
authors.initials: JC
authors.lastname: Zhang
authors.affiliation: Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, China.
authors.forename: Meng-Qi
authors.initials: MQ
authors.lastname: Wang
authors.affiliation: Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, China.
authors.forename: Min
authors.initials: M
authors.lastname: Sun
authors.affiliation: Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Ding
authors.affiliation: Key Laboratory of New Optoelectronic Functional Materials (Henan Province), College of Chemistry and Chemical Engineering, Anyang Normal University , Anyang 455000, China.
authors.forename: Dao-Jun
authors.initials: DJ
authors.lastname: Zhang
authors.affiliation: College of Chemistry, Dalian University of Technology , Dalian 116024, China.
authors.forename: Yong-Lin
authors.initials: YL
authors.lastname: An