| DC 欄位 |
值 |
語言 |
| DC.contributor | 化學學系 | zh_TW |
| DC.creator | 劉倚佑 | zh_TW |
| DC.creator | LIOU,YI-YOU | en_US |
| dc.date.accessioned | 2014-12-29T07:39:07Z | |
| dc.date.available | 2014-12-29T07:39:07Z | |
| dc.date.issued | 2014 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=101223038 | |
| 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 | 本論文利用吸收光譜儀和螢光光譜儀以及飛秒脈衝式雷射來激
發模型分子，量測模型分子的吸收光譜、螢光光譜、螢光生命期、螢
光量子產率和非線性光學中雙光子吸收的效應，論文總共分為六個章
節， 11 個模型分子， 三個系列作為探討； 三個系列分別以
Thieno[3,4-c]pyrrole-4,6-dione(TPD)、咪唑(imidazole)及噻吩(thiophene)
做為不同的共軛中心來進行討論，歸類出以下結論：
[1]以TPD為共軛中心，兩邊掛有推電子官能基對雙光子吸收有較好表
現。
[2]咪唑連接的分子具有較佳的量子產率，但引入芴共軛單元無法做
有效的π電子轉移，導致雙光子吸收表現不如預期。
[3]延長噻吩數目可以有效的降低吸收能隙，提升雙光子吸收的表
現。 | zh_TW |
| dc.description.abstract | The purpose of this study is to utilize absorption spectroscopy,
fluorescence spectroscopy, and femtosecond pulsed laser to
measure the absorption spectra, fluorescence spectra, fluorescence
lifetimes, fluorescence quantum yield and two-photon absorption
spectra of three series of model molecules. This thesis is divided
into six chapters and organized as follows:
Chapter1: Introduction; Chapter2: Molecular Design;
Chapter3: Result and Discussion; Chapter4: Synthesis;
Chapter5: The spectrum of nmr and mass, and Chapter6:
Experimental Section.
The experimental results show that: (1) using
thieno[3,4-c]pyrrole-4,6-dione as the π-center and
electron-donating functional units as the end-groups will lead to
better two-photon absorption; (2) all the imidazole-containing
model compounds show high fluorescence quantum yields, but the
incorporation of fluorene units does not lead to effective
charge-transfer upon excitation. Therefore the molecular
two-photon absorption performance of such model chromophores
are under our expectation; (3) increase the number of thiophene
units or extend the conjugated length of fused thiophene unit can
effectively reduce band-gap and enhance the molecular
two-photon absorption. | en_US |
| DC.subject | 非線性 | zh_TW |
| DC.subject | 雙光子吸收 | zh_TW |
| DC.subject | 雜環 | zh_TW |
| DC.title | 合成各類以雜環為核心的分子並研究其非線性光學性質 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Synthesis and investigation of nonlinear optical properties of various organic molecules with different heterocyclic cores | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |