(1) 含2-吡啶吡唑族配基之有機鋨異構錯合物之光致發光性質比較 (2) 鄰位綠螢光蛋白質發光團：七元環氫鍵系統中的激發態分子內質子轉移
Other Title
(1) High-Efficiency, Osmium(II)-Based Phosphorescent Materials: The Distinctive Photoluminescent Properties of Two Isomeric OsII Complexes Containing 2-pyridyl pyrazole Family Ligands(2)Ortho Green Fluorescence Protein Synthetic Chromophore; Excited-State Intramolecular Proton Transfer via a Seven-Membered-Ring Hydrogen-Bonding System
Date Issued
2007
Date
2007
Author(s)
DOI
en-US
Abstract
part 1.
A general review of 2nd and 3rd – row transition-metal complexes incorporating chelating chromophores, which serves as phosphorescent dyes for organic light-emitting diodes, will be depicted in chapter 1. Group of Chi have synthesized two monometallic and isomeric complexes 3 and 4 with the coordination of two phosphine ligands located in the trans-disposition and one CO and one hydride located opposite to the pyridyl triazolate chelate. Chapter 2 focuses on subtle differences in photophysical properties examined for isomers 3 and 4 on the basis of steady state absorption and emission, the relaxation dynamics, and temperature- dependent luminescent studies. The results, in combination with time-dependent density function theory (TDDFT) calculations, provide fundamental insights into the future design and preparation of highly efficient phosphorescent emitters.
part 2.
In chapter 3 the focus is mainly limited to the subject related to the photoinduced excited-state inter/intra-molecular proton transfer (ESPT) process, forming a proton-transfer isomer. Our main goal aims at bi-functional molecules possessing a proton donor group and a proton acceptor group so that ESPT takes place either intramolecularly (i.e. intrinsically) or through the assistance of the guest molecules. Futhermore, a structural isomer of the core chromophore (p-HBDI) in green fluorescence protein, o-HBDI, and as well as a new series of ortho-hydroxy analogues, is synthesized. o-HBDI possesses a seven-membered-ring hydrogen bond, from which the excited-state intramolecular proton transfer takes place, resulting in a remarkable tautomer emission of ~605 nm and be fully discussed in chapter 4.
Subjects
有機發光二極體
綠
螢光蛋白
分子內質子轉移
飛秒雷射
過渡有機金
屬錯合物
OLED
GFP
femto-second
ESIPT
Type
thesis