2-D layered Silver Iodide Exhibits Luminescent Thermochromism with a Large Emission Shift

【作者】 宋丹娜； 张道军； 王军杰； 廖水娇； 张仁春；

【Author】 Dan-Na Song;Dao-Jun Zhang;Jun-Jie Wang;Shui-Jiao Liao;Ren-Chun Zhang;Henan Province Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University;College of Basic Sciences, Huazhong Agricultural University;

【机构】 Henan Province Key Laboratory of New Optoelectronic Functional Materials, College of Chemistry and Chemical Engineering, Anyang Normal University； College of Basic Sciences, Huazhong Agricultural University；

【摘要】 Luminescent thermochromic materials display high sensitivity and visual emission colorimetric responses to temperature variation,making them potential candidates for temperature sensing.^1,2 In this work,one new silver iodide （emIm）Ag₃I₄ （1） has been synthesized under solvothermal condition.Compound 1 features 2-D layered structure （figure a）,and displays luminescent thermochromism with a large emission shift.³ As the temperature increases from 77 to320 K,the emission band shows a gradual blue shift from 768 to 603 nm （figure b）.In accordingly,the emission color changes from red to orange and finally to yellow,as shown in figure c.The variable temperature single-crystal diffraction results illustrate that the Ag···Ag distance change is responsible for the luminescent thermochromism of the compound 1.更多还原

【Abstract】 Luminescent thermochromic materials display high sensitivity and visual emission colorimetric responses to temperature variation,making them potential candidates for temperature sensing.^1,2 In this work,one new silver iodide （emIm）Ag₃I₄ （1） has been synthesized under solvothermal condition.Compound 1 features 2-D layered structure （figure a）,and displays luminescent thermochromism with a large emission shift.³ As the temperature increases from 77 to320 K,the emission band shows a gradual blue shift from 768 to 603 nm （figure b）.In accordingly,the emission color changes from red to orange and finally to yellow,as shown in figure c.The variable temperature single-crystal diffraction results illustrate that the Ag···Ag distance change is responsible for the luminescent thermochromism of the compound 1.更多还原