本文選題：水楊醛亞胺 + 壓致熒光變色　； 參考：《吉林大學(xué)》2017年碩士論文

【摘要】：壓致熒光變色材料是一類能對力刺激產(chǎn)生熒光響應(yīng)的智能材料。利用其它途徑如熱處理,溶劑熏蒸熒光又能恢復(fù)到原始狀態(tài),因此是一種可循環(huán)使用的材料。作為檢測用途的材料,通常其發(fā)射光譜相比吸收光譜所受干擾更少,同時靈敏度更高。因而壓致熒光變色材料在力傳感、熒光開關(guān)、無墨書寫、保密存儲、商標(biāo)防偽等方面具有廣泛應(yīng)用。二氟化硼絡(luò)合物類材料因諸多光學(xué)和結(jié)構(gòu)方面的優(yōu)點如,熒光量子產(chǎn)率高、結(jié)構(gòu)易于修飾等而引起人們廣泛興趣。水楊醛單元是重要的化工中間體也是重要的配體單元,在醫(yī)藥、生物和材料領(lǐng)域被廣泛使用。因此,本論文從設(shè)計合成新型咔唑和三苯胺修飾的水楊醛亞胺二氟化硼絡(luò)合物出發(fā),考察分子結(jié)構(gòu)與材料發(fā)光之間的關(guān)系,并研究了該材料的壓致熒光變色性質(zhì)。取得了如下創(chuàng)新性研究結(jié)果:(1)設(shè)計并合成了新型咔唑功能化的水楊醛亞胺二氟化硼絡(luò)合物。這種D-π-A型化合物具有ICT發(fā)射,發(fā)光可以被水楊醛上取代基調(diào)節(jié)。對該類化合物的光物理性質(zhì)的研究表明,八個化合物固體能夠在紫外光下發(fā)出強烈熒光,并表現(xiàn)出可逆的壓致熒光變色行為。例如,研磨TCH的原始樣品,可以使其熒光發(fā)射峰從488nm紅移至571nm。值得注意的是,83nm這樣大的發(fā)射位移在非金屬有機化合物中很少有報道。研磨過的TCH樣品經(jīng)過二氯甲烷熏蒸或者在200℃加熱2分鐘,熒光能從橙色恢復(fù)到藍(lán)綠色。外界刺激使材料從晶體到無定形態(tài)的轉(zhuǎn)變是實現(xiàn)壓致熒光變色的根本原因。因此通過調(diào)節(jié)D-p-A型化合物的ICT性質(zhì)來設(shè)計具有高性能的壓致熒光變色材料是一種可行的策略。(2)設(shè)計并合成了新型三苯胺功能化的水楊醛亞胺二氟化硼絡(luò)合物。結(jié)果發(fā)現(xiàn)四個目標(biāo)化合物表現(xiàn)出壓致熒光變色性質(zhì),并且取代基可以調(diào)節(jié)其發(fā)光�；衔锕腆wTH,TB,TT和TO能夠在紫外光下發(fā)出強烈熒光并表現(xiàn)出可逆的壓致熒光變色行為。TH的原始樣品發(fā)出中心為551nm的黃色熒光,經(jīng)過研磨,發(fā)光顏色變?yōu)橹行臑?00nm橙紅色熒光。TB的原始樣品發(fā)出中心為545nm的黃色熒光,經(jīng)過研磨,發(fā)光顏色變?yōu)橹行臑?10nm橙紅色熒光。研磨過的樣品經(jīng)過二氯甲烷熏蒸或在150°C加熱1分鐘,固態(tài)材料的熒光能恢復(fù)到初始狀態(tài),這說明壓致熒光變色過程能夠可逆進(jìn)行。研磨處理使固體的吸收紅移,研磨可能導(dǎo)致分子平面化。XRD和DSC表征表明材料從晶體到無定形態(tài)的轉(zhuǎn)變是產(chǎn)生壓致熒光變色現(xiàn)象的本質(zhì)原因。三苯胺結(jié)構(gòu)基元扭曲的非平面空間結(jié)構(gòu)和D-π-A電子結(jié)構(gòu)是實現(xiàn)壓致熒光變色性質(zhì)的重要條件。
[Abstract]:Pressure-induced fluorescence discoloration material is a kind of intelligent material which can produce fluorescence response to force stimulation.Solvent fumigation can return to its original state by other means such as heat treatment, so it is a recyclable material.Materials used for detection are usually less interfered and more sensitive in their emission spectra than in absorption spectra.Therefore, pressure-induced fluorescent discoloration materials are widely used in force sensing, fluorescent switch, ink free writing, secret storage, trademark anti-counterfeiting and so on.Boron difluoride complex materials have attracted much attention due to their optical and structural advantages such as high fluorescence quantum yield and easy modification of structures.Salicylic aldehyde units are important chemical intermediates and important ligand units, which are widely used in medicine, biology and materials.Therefore, based on the design and synthesis of novel carbazole and trianiline modified boron difluoride complexes, the relationship between molecular structure and luminescence of the materials was investigated, and the pressure-induced fluorescence discoloration properties of the materials were studied.A novel carbazole-functionalized boron difluoride complex was designed and synthesized.The D- 蟺 -A compound has ICT emission, and its luminescence can be regulated by the substituents on salicylaldehyde.The photophysical properties of these compounds show that eight solid compounds can emit strong fluorescence under ultraviolet light and exhibit reversible pressure-induced fluorescence discoloration behavior.For example, by grinding the original sample of TCH, the fluorescence emission peak can be shifted from 488nm red to 571 nm.It is worth noting that a large emission shift of 83 nm is rarely reported in nonmetallic organic compounds.The ground TCH sample was fumigated by dichloromethane or heated at 200 鈩，

本文編號：1737067