2010年上映的美国电影《怦然心动》讲述了一段清新温暖的成长故事,同年上映的日本电影《告白》讲述的是阴暗惊悚的复仇故事,两部电影风格迥异却广受好评,同样运用了独特的POV(Point Of View,视点人物写作手法)来构建整个故事,在丰富电...2010年上映的美国电影《怦然心动》讲述了一段清新温暖的成长故事,同年上映的日本电影《告白》讲述的是阴暗惊悚的复仇故事,两部电影风格迥异却广受好评,同样运用了独特的POV(Point Of View,视点人物写作手法)来构建整个故事,在丰富电影叙事的同时也增添了影片的艺术性与研究价值。本文分别对《怦然心动》和《告白》的叙事视角及效果进行分析,探索POV手法在不同题材影片中的叙事魅力。展开更多
The selective oxidative esterification of aldehydes with alcohols to the corresponding esters has been one of the hot spots in scientific research and industrial synthesis.However,the application of precious metal cat...The selective oxidative esterification of aldehydes with alcohols to the corresponding esters has been one of the hot spots in scientific research and industrial synthesis.However,the application of precious metal catalytic systems is limited by their complicated synthetic steps and high cost.Thus a highly efficient,green,recyclable selective synthesis method of esters catalyzed by polyoxovanadate(POV)-based molecu-lar catalysts has been developed in this paper.The results show that supramolecular interaction between POV and 1,3-dibenzylimidazolium bromide(Act_(2)Im)can efficiently convert alcohols and aldehydes to the corresponding esters in high yield under much milder conditions.Mechanistic insight is also provided based on the control experiments,single crystal X-ray diffraction and cyclic voltammetry studies.展开更多
文摘2010年上映的美国电影《怦然心动》讲述了一段清新温暖的成长故事,同年上映的日本电影《告白》讲述的是阴暗惊悚的复仇故事,两部电影风格迥异却广受好评,同样运用了独特的POV(Point Of View,视点人物写作手法)来构建整个故事,在丰富电影叙事的同时也增添了影片的艺术性与研究价值。本文分别对《怦然心动》和《告白》的叙事视角及效果进行分析,探索POV手法在不同题材影片中的叙事魅力。
基金supported by the National Natural Science Foundation of China(NSFC,Nos.22371158,21801153,21225103)2021-2023 Intergovernmental S&T Cooperation Project No.1 between China and Serbia,Tsinghua University Initiative Foundation Research Program(No.20131089204)the State Key Laboratory of Natural and Biomimetic Drugs(No.K202008).
文摘The selective oxidative esterification of aldehydes with alcohols to the corresponding esters has been one of the hot spots in scientific research and industrial synthesis.However,the application of precious metal catalytic systems is limited by their complicated synthetic steps and high cost.Thus a highly efficient,green,recyclable selective synthesis method of esters catalyzed by polyoxovanadate(POV)-based molecu-lar catalysts has been developed in this paper.The results show that supramolecular interaction between POV and 1,3-dibenzylimidazolium bromide(Act_(2)Im)can efficiently convert alcohols and aldehydes to the corresponding esters in high yield under much milder conditions.Mechanistic insight is also provided based on the control experiments,single crystal X-ray diffraction and cyclic voltammetry studies.
