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| Type |
Poster Presentation |
| Area |
무기화학 |
| Room No. |
포스터발표장 |
| Time |
4월 21일 (금요일) 13:00~14:30 |
| Code |
INOR.P-67 |
| Subject |
Luminescence Mechanochromism of a Cu(I) Coordination Polymer without Phase Transition |
| Authors |
권은진, 박현진, 임한수, 김진은*, 김태호*
경상대학교 화학과, Korea
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| Abstract |
A Cu(I) coordination polymer, [Cu2I2L2]n (CP 1), was prepared by the reaction between CuI and 3-(2-(benzylthio)ethoxy)pyridine (L). CP 1 shows luminescence mechanochromism with a color change from greenish-blue to yellow upon the application of pressure. No new peak was observed in Powder X-ray diffraction (PXRD) patterns, indicating non-phase-transition process. The d-spacing value of the (111) lattice plane was 7.96, 7.99, and 8.09 Å at 0, 0.05, and 0.4 GPa, respectively. The Raman peaks corresponding to Cu-I, N-Cu, I-I, and Cu-Cu vibration shift from 128.2, 174.3, 208.0, and 253.4 cm-1 to 123.8, 169.8, 206.5, and 252.3 cm-1, respectively. PXRD and Raman studies reveal that the changes in the bond lengths in crystalline CP 1 are the main cause of luminescence mechanochromism. After the addition of several drops of acetonitrile to the ground and compressed samples, the original greenish-blue emissive and crystalline states are restored. Therefore, the luminescence color conversion processes are fully reversible |
| E-mail |
kwon_jjin@gnu.ac.kr |
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119th General Meeting of the KCS