Reflect The few basic types of chemical bonds account for the way different mate

Question

Reflect The few basic types of chemical bonds account for the way different materials behave. The expanding field of materials science is using this knowledge to improve the performance of known materials in specific applications, or to develop entirely new compounds. superconductors, ceramics, alloys, polymers, are just a few examples. Activity Do some research on one material being developed or recently introduced that is used in your work field, or that you find particularly interesting. Present the summary of your findings to the class, making sure your posting contains the following: Why did you choose this particular material? What did you learn from your research? Sources (books, articles, websites) you collected information from. please do not use nanotube

Explanation / Answer

Answer-

Materials behaves in different way due to electronic distribution surrounded by different and the most important factor is HOMO (highly occupied molecular orbital)-LUMO(lowest unoccupied moleculer orbital) gap means band gap between valance band and conduction band is deciding factor for a molecules have lowest band gap. In this phenomenon substituents in the form of donar and acceptor to main molecules play significant role in the form of reduction of diradical character, energy of singlet excitons, energy of triplet excitons play valuable role in band gap reduction.Nowdays people are trying to explore organic molecules as organic electronics as it was discussed in science summit

organic electronic devices will do things that silicon-based electronics cannot do, expanding the functionality and accessibility of electronics, more energy-efficient using more resource-friendly than today’s electronic contributing to a more sustainable electronic world.   

“A White Paper from the Chemical Sciences and Society Summit (CS3)” September2012- CS3 initiative is a collaboration between ACS , RSC, CCS, GDCh, CSJ.

Generally conjugation in the molecules can cause reduction in the band gap.most common used way in organic chemistry is to put alkynyl linkers in between the aromatic compounds to make it usable for organic electronics but again low solar efficiency is major issue with organic electronics. To overcome this problem Researchers are trying Singlet fission or multiexciton generations phenonmenon which is efficient tool to increase solar efficiency upto its 200 % petrcent (44.4 % over pre existing 31% ).

for this puting trispropyl acetylene (TIPS acetylene), Trimethyl silyla cetylene(TMSA) and tri phenyl derivatives etc are efficient way , cofacial arrangement in some cases in Plane arrangement is also tool to inhance efficiency tool so called singlet fussion.

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