DNA-Based Asymmetric Catalysis: Sequence-Dependent Rate Acceleration and Enantioselectivity

2008 ◽  
Vol 130 (35) ◽  
pp. 11783-11790 ◽  
Author(s):  
Arnold J. Boersma ◽  
Jaap E. Klijn ◽  
Ben L. Feringa ◽  
Gerard Roelfes
Keyword(s):  
Asymmetric Catalysis ◽  
Dependent Rate ◽  
Sequence Dependent ◽  
Rate Acceleration

Characterisation of the interactions between substrate, copper(ii) complex and DNA and their role in rate acceleration in DNA-based asymmetric catalysis

2015 ◽  
Vol 44 (8) ◽  
pp. 3656-3663 ◽  
Author(s):  
Apparao Draksharapu ◽  
Arnold J. Boersma ◽  
Wesley R. Browne ◽  
Gerard Roelfes
Keyword(s):  
Asymmetric Catalysis ◽  
Rate Acceleration ◽  
Effective Molarity

High effective molarity is responsible for the significant increase of binding of substrates to copper(ii) complexes in DNA-based catalysis.

scholarly journals Size-dependent rate acceleration in the silylation of secondary alcohols: the bigger the faster

2018 ◽  
Vol 9 (31) ◽  
pp. 6509-6515 ◽  
Author(s):  
Marta Marin-Luna ◽  
Benjamin Pölloth ◽  
Fabian Zott ◽  
Hendrik Zipse
Keyword(s):  
Organic Solvents ◽  
Secondary Alcohols ◽  
Size Dependent ◽  
Dependent Rate ◽  
Rate Acceleration

Relative rates for the reaction of secondary alcohols carrying large aromatic moieties with silyl chlorides carrying equally large substituents have been determined in organic solvents.

The Effect of Searching Versus Surfing on Cognitive and Emotional Responses to Online News

2009 ◽  
Vol 21 (2) ◽  
pp. 49-59 ◽  
Author(s):  
Kevin Wise ◽  
Hyo Jung Kim ◽  
Jeesum Kim
Keyword(s):  
Heart Rate ◽  
Skin Conductance ◽  
Skin Conductance Level ◽  
Emotional Responses ◽  
Online News ◽  
Self Report ◽  
Mixed Design ◽  
Information Need ◽  
News Stories ◽  
Rate Acceleration

A mixed-design experiment was conducted to explore differences between searching and surfing on cognitive and emotional responses to online news. Ninety-two participants read three unpleasant news stories from a website. Half of the participants acquired their stories by searching, meaning they had a previous information need in mind. The other half of the participants acquired their stories by surfing, with no previous information need in mind. Heart rate, skin conductance, and corrugator activation were collected as measures of resource allocation, motivational activation, and unpleasantness, respectively, while participants read each story. Self-report valence and recognition accuracy were also measured. Stories acquired by searching elicited greater heart rate acceleration, skin conductance level, and corrugator activation during reading. These stories were rated as more unpleasant, and their details were recognized more accurately than similar stories that were acquired by surfing. Implications of these results for understanding how people process online media are discussed.

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