Accession Number:

ADA625446

Title:

Fluxional Mechanocatalysis

Descriptive Note:

Final rept. 1 Apr 2011-31 Mar 2015

Corporate Author:

DUKE UNIV DURHAM NC

Personal Author(s):

• Craig, Stephen

Report Date:

2015-01-29

Pagination or Media Count:

18.0

Abstract:

During the final, no-cost- extension period of the grant, we continued with our modified experimental plan that leveraged the photoswitchable tension generators developed by Boulatov. This strategy allowed us to demonstrate the concept in a way that can be quantified while in parallel optimizing the reversible actuating platform for covalent mechanochemistry. Pursuant to the three goals described above, we have three principle achievements from the past reporting period 1 we have quantified the force-activity relationship for MeO-BIPHEP ligands in asymmetric Heck arylations and Trost asymmetric alkylations whose behavior we had qualitatively established previously. 2 we have expanded the utility of our PDMS shape recovery platform and shown that it can function efficiently and effectively in new mechanochemically active electroactive devices and displays. 3 we have quantified the forces required for probe activation in the PDMS material and found it to be very similar to the forces required for catalyst actuation.

Descriptors:

• *CATALYSIS
• *LIGANDS
• *MECHANICAL PROPERTIES
• ACETATES
• ACTUATION
• COVALENT BONDS
• DIHEDRAL ANGLE
• DISPLAY SYSTEMS
• ELECTROMECHANICAL DEVICES
• EMBEDDING
• EXPERIMENTAL DESIGN
• FLUORESCENCE
• FORCE(MECHANICS)
• MICROSCOPES
• OPTICAL PROPERTIES
• PHOTOCHEMICAL REACTIONS
• POLYMERS
• REACTIVITIES
• RECOVERY
• REVERSIBLE
• STEREOCHEMISTRY
• SUBSTRATES
• SWITCHING
• TENSION

Subject Categories:

• Physical Chemistry
• Polymer Chemistry
• Electrical and Electronic Equipment
• Optics
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE