本文選題：激發(fā)態(tài)分子內(nèi)質(zhì)子轉(zhuǎn)移　切入點(diǎn)：水楊醛　出處：《高等學(xué)�；瘜W(xué)學(xué)報(bào)》2017年03期 　論文類型：期刊論文

【摘要】：從電子結(jié)構(gòu)控制理論出發(fā),通過在酚羥基對位引入吸電子取代基團(tuán)穩(wěn)定水楊醛中激發(fā)態(tài)的酮式構(gòu)象,制備了目標(biāo)化合物5-對氰基苯基-水楊醛(CN-SA).光譜測試結(jié)果顯示,CN-SA表現(xiàn)出典型的ESIPT態(tài)熒光分子特性,而且輻射躍遷過程的酮式分配比例顯著提高,熒光強(qiáng)度和顏色變化明顯.CN-SA的熒光光譜不但能夠?qū)ν鈬軇┉h(huán)境進(jìn)行選擇性識別,而且對溶解和聚集過程(聚集效應(yīng))及外圍氫鍵形成能力的變化(pH效應(yīng)和陰離子效應(yīng))等具有特異性響應(yīng),其變化可以定量表達(dá).CN-SA僅通過結(jié)構(gòu)微調(diào)即實(shí)現(xiàn)醇-酮構(gòu)象的顯著變化,可作為一個簡單的多重刺激響應(yīng)型熒光探針.
[Abstract]:Based on the theory of electronic structure control, the keto-type conformation of excited states in salicylic aldehyde was stabilized by introducing electron absorbent groups at p-position of phenolic hydroxyl groups. The target compound 5-p-cyanophenyl-salicylidene (CN-SAA) has been prepared. The spectral measurements show that CN-SA exhibits typical fluorescence characteristics of ESIPT state, and the ketone partition ratio in the radiative transition process is significantly increased. Fluorescence intensity and color change obviously. The fluorescence spectrum of CN-SA can not only selectively identify the peripheral solvent environment, Moreover, it has a specific response to the dissolution and aggregation process (aggregation effect) and the variation of hydrogen bond formation ability in the periphery, such as pH effect and anionic effect. The change of CN-SA can be used as a simple fluorescent probe for multiple stimuli response, which can realize the significant change of alcohol-ketone conformation only through structural fine-tuning.
【作者單位】： 沈陽工業(yè)大學(xué)石油化工學(xué)院;香港科技大學(xué)深圳研究院;
【基金】：國家自然科學(xué)基金(批準(zhǔn)號:51673118) 深圳市科技計(jì)劃項(xiàng)目(批準(zhǔn)號:JCYC20160428150429072)資助~~
【分類號】：O657.3

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