=
I wonder if these are made of Unobtanium? I haven't seen any on the market.
mark in roanoke, VA www.reevadiy.org =
=
Sent: Monday, September 20, 2010 10:01 PM
Subject: New Organic Batteries
=
=
The development of new organic batteries =97 lightweight energy storage dev=
ices that work without the need for toxic heavy metals =97 has a brighter f=
uture now that chemists have discovered a new way to pass electrons back an=
d forth between two molecules. The research is also a necessary step toward=
creating artificial photosynthesis, where fuel could be generated directly=
from the sun, much as plants do.
University of Texas at Austin chemists Christopher Bielawski and Jonathan S=
essler led the research, which was published in Science.
When molecules meet, they often form new compounds by exchanging electrons.=
In some cases, the electron transfer process creates one molecule with a p=
ositive charge and one molecule with a negative charge. Molecules with oppo=
site charges are attracted to each other and can combine to form something =
new.
In their research, the chemists created two molecules that could meet and e=
xchange electrons but not unite to form a new compound.
=93These molecules were effectively spring-loaded to push apart after inter=
acting with each other,=94 says Bielawski, professor of chemistry. =93After=
electron transfer occurs, two positively charged molecules are formed whic=
h are repelled by each other, much like magnets held in a certain way will =
repel each other. We also installed a chemical switch that allowed the elec=
tron transfer process to proceed in the opposite direction.=94
Sessler adds, =93This is the first time that the forward and backward switc=
hing of electron flow has been accomplished via a switching process at the =
molecular scale.=94 Sessler is the Roland K. Pettit Centennial Chair in Che=
mistry at The University of Texas at Austin and a visiting professor at Yon=
sei University.
Bielawski says this system gives important clues for making an efficient or=
ganic battery. He says understanding the electron transfer processes in the=
se molecules provides a way to design organic materials for storing electri=
cal energy that could then be retrieved for later use.
=93I would love it if my iPhone was thinner and lighter, and the battery la=
sted a month or even a week instead of a day,=94 says Bielawski. =93With an=
organic battery, it may be possible. We are now starting to get a handle o=
n the fundamental chemistry needed to make this dream a commercial reality.=
=94
The next step, he says, is to demonstrate these processes can occur in a co=
ndensed phase, like in a film, rather than in solution.
Organic batteries are made of organic materials instead of heavy metals. Th=
ey could be lightweight, could be molded into any shape, have the potential=
to store more energy than conventional batteries and could be safer and ch=
eaper to produce.
The molecular switch could also be a step toward developing a technology th=
at mimics plants=92 ability to harvest light and convert it to energy. With=
such a technology, fuel could be produced directly from the sun, rather th=
an through a plant mediator, such as corn.
=93I am excited about the prospect of coupling this kind of electron transf=
er =91molecular switch=92 with light harvesting to go after what might be a=
n improved artificial photosynthetic device,=94 says Sessler. =93Realizing =
this dream would represent a big step forward for science.=94 =
-------------- next part --------------
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_______________________________________________
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I wonder if these are made of Unobtanium? I haven't seen any on the market.
mark in roanoke, VA www.reevadiy.org =
=
Sent: Monday, September 20, 2010 10:01 PM
Subject: New Organic Batteries
=
=
The development of new organic batteries =97 lightweight energy storage dev=
ices that work without the need for toxic heavy metals =97 has a brighter f=
uture now that chemists have discovered a new way to pass electrons back an=
d forth between two molecules. The research is also a necessary step toward=
creating artificial photosynthesis, where fuel could be generated directly=
from the sun, much as plants do.
University of Texas at Austin chemists Christopher Bielawski and Jonathan S=
essler led the research, which was published in Science.
When molecules meet, they often form new compounds by exchanging electrons.=
In some cases, the electron transfer process creates one molecule with a p=
ositive charge and one molecule with a negative charge. Molecules with oppo=
site charges are attracted to each other and can combine to form something =
new.
In their research, the chemists created two molecules that could meet and e=
xchange electrons but not unite to form a new compound.
=93These molecules were effectively spring-loaded to push apart after inter=
acting with each other,=94 says Bielawski, professor of chemistry. =93After=
electron transfer occurs, two positively charged molecules are formed whic=
h are repelled by each other, much like magnets held in a certain way will =
repel each other. We also installed a chemical switch that allowed the elec=
tron transfer process to proceed in the opposite direction.=94
Sessler adds, =93This is the first time that the forward and backward switc=
hing of electron flow has been accomplished via a switching process at the =
molecular scale.=94 Sessler is the Roland K. Pettit Centennial Chair in Che=
mistry at The University of Texas at Austin and a visiting professor at Yon=
sei University.
Bielawski says this system gives important clues for making an efficient or=
ganic battery. He says understanding the electron transfer processes in the=
se molecules provides a way to design organic materials for storing electri=
cal energy that could then be retrieved for later use.
=93I would love it if my iPhone was thinner and lighter, and the battery la=
sted a month or even a week instead of a day,=94 says Bielawski. =93With an=
organic battery, it may be possible. We are now starting to get a handle o=
n the fundamental chemistry needed to make this dream a commercial reality.=
=94
The next step, he says, is to demonstrate these processes can occur in a co=
ndensed phase, like in a film, rather than in solution.
Organic batteries are made of organic materials instead of heavy metals. Th=
ey could be lightweight, could be molded into any shape, have the potential=
to store more energy than conventional batteries and could be safer and ch=
eaper to produce.
The molecular switch could also be a step toward developing a technology th=
at mimics plants=92 ability to harvest light and convert it to energy. With=
such a technology, fuel could be produced directly from the sun, rather th=
an through a plant mediator, such as corn.
=93I am excited about the prospect of coupling this kind of electron transf=
er =91molecular switch=92 with light harvesting to go after what might be a=
n improved artificial photosynthetic device,=94 says Sessler. =93Realizing =
this dream would represent a big step forward for science.=94 =
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.sjsu.edu/mailman/private/ev/attachments/20100923/ecf6945d=
/attachment.html =
_______________________________________________
| REPLYING: address your message to [email protected] only.
| Multiple-address or CCed messages may be rejected.
| UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
| OTHER HELP: http://evdl.org/help/
| OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
