|
rdf:type |
|
|
lifeskim:mentions |
|
|
pubmed:issue |
2
|
|
pubmed:dateCreated |
2003-7-29
|
|
pubmed:abstractText |
The photovoltaic signal associated with the primary photochemical event in an oriented bacteriorhodopsin film is measured by directly probing the electric field in the bacteriorhodopsin film using an ultrafast electro-optic sampling technique. The inherent response time is limited only by the laser pulse width of 500 fs, and permits a measurement of the photovoltage with a bandwidth of better than 350 GHz. All previous published studies have been carried out with bandwidths of 50 GHz or lower. We observe a charge buildup with an exponential formation time of 1.68 +/- 0.05 ps and an initial decay time of 31.7 ps. Deconvolution with a 500-fs Gaussian excitation pulse reduces the exponential formation time to 1.61 +/- 0.04 ps. The photovoltaic signal continues to rise for 4.5 ps after excitation, and the voltage profile corresponds well with the population dynamics of the K state. The origin of the fast photovoltage is assigned to the partial isomerization of the chromophore and the coupled motion of the Arg-82 residue during the primary event.
|
|
pubmed:grant |
|
|
pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-11250031,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-11705380,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-12206785,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-12358516,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-16063250,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-16063253,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-1867724,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-19431670,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-19431755,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-2195566,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-2257039,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-2359127,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-291920,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-3349137,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-3363359,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-6961407,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-7020578,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-7763952,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-7787036,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-8312486,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-8580349,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-9172760,
http://linkedlifedata.com/resource/pubmed/commentcorrection/12885657-9370465
|
|
pubmed:language |
eng
|
|
pubmed:journal |
|
|
pubmed:citationSubset |
IM
|
|
pubmed:chemical |
|
|
pubmed:status |
MEDLINE
|
|
pubmed:month |
Aug
|
|
pubmed:issn |
0006-3495
|
|
pubmed:author |
|
|
pubmed:issnType |
Print
|
|
pubmed:volume |
85
|
|
pubmed:owner |
NLM
|
|
pubmed:authorsComplete |
Y
|
|
pubmed:pagination |
1128-34
|
|
pubmed:dateRevised |
2011-9-26
|
|
pubmed:meshHeading |
|
|
pubmed:year |
2003
|
|
pubmed:articleTitle |
Direct measurement of the photoelectric response time of bacteriorhodopsin via electro-optic sampling.
|
|
pubmed:affiliation |
Solid State Electronics Laboratory, Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan, USA.
|
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.
|
