| DC 欄位 |
值 |
語言 |
| DC.contributor | 化學學系 | zh_TW |
| DC.creator | 李庭安 | zh_TW |
| DC.creator | Ting-An Lee | en_US |
| dc.date.accessioned | 2021-7-21T07:39:07Z | |
| dc.date.available | 2021-7-21T07:39:07Z | |
| dc.date.issued | 2021 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=108223033 | |
| dc.contributor.department | 化學學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本研究以五員雜環呋喃 (furan) 作為核心，以 α, β-二酮(α,β-diketonate) 連接外圍苯環結構之烷氧長碳鏈合成配位基 1a-d，並進而與 BF2 配位形成錯合物 1a-BF2-1d-BF2，以及合成吡唑 (pyrazole) 衍生物 2a-d。由化合物 1d (n = 0) 單晶結構得知晶系為單斜晶系(monoclinic)，空間群為 P21/n，分子形狀為馬蹄型，且兩側苯環與雜環呋喃之二面角分別為 16.582o 與 25.292o。所有的配位基1a-d 均為結晶相，而化合物 1d-BF2、 2a 與 2d 具有 SmA 及 SmC 的液晶相性質。從螢光放光光譜中，可得知硼錯合物 1a-BF2-1d-BF2 (n = 12) 的螢光放光範圍為 max = 520-624 nm，放光為綠光至紅光範圍;而吡唑衍生物 2a-d (n = 12) 的螢光放光範圍為 max = 355-360 nm，放光為紫外光範圍。此外，可發現硼錯合物之最大放光波長皆比配位基紅移，而在固態螢光光譜中，化合物 1d-BF2 (n = 12) 所測得之放光波長為 max = 618 nm，在溶液態所測得之放光波長為 max = 549 nm，可得知化合物 1d-BF2 (n = 12) 在固態所測得之放光波長較溶液態紅位移，此為 J-aggregate 堆疊所導致。 | zh_TW |
| dc.description.abstract | In this work, four new families of borondifluoride complexes 1a-BF2-1d-BF2 and four new families of pyrazole derivatives 2a-d derived from , -ketonate furans 1a-d were reported and their mesomorphic properties investigated. One single crystallographic structure of mesogenic complex 1d (n = 0) was determined X-ray analysis; it crystallizes in a monoclinic space group P21/n. The crystal was shaped as a horsesho. The dihedral angles of the furan ring and the benzene ring on both side are 16.582o and 25.292o respectively. All ligands 1a-b were crystals, however, all bis(BF2) complexes 1d-BF2, 2a and 2d formed SmA or/and SmC phases. The optical property of the bis(BF2)2 complexes 1a-BF2-1d-BF2 (n = 12) was related with their molecular structures, and they emitted green-to-red emissions at max = 520-624 nm in CH2Cl2. Pyrazole derivatives 2a-d (n = 12) emitted ultraviolet emissions at max = 355-360 nm in CH2Cl2. The maximum luminescent emission of the compounds 1a-BF2-1d-BF2 (n = 12) were red-shifted compared to the compounds 1a-d. Furthermore, the maximum luminescent emission of bis(BF2) complex 1d-BF2 (n = 12) in the solid state (max = 618 nm) was red-shifted compared to in the solution (max = 549 nm) because of the J-aggregate. | en_US |
| DC.subject | 呋喃 | zh_TW |
| DC.subject | 液晶 | zh_TW |
| DC.subject | 二氟化硼 | zh_TW |
| DC.subject | furan | en_US |
| DC.subject | Liquid crystal | en_US |
| DC.subject | boron difluoride | en_US |
| DC.title | 呋喃衍生物及其硼錯合物之液晶性質探討 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |