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Femtochemistry

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98:. In this method, two or more optical pulses with variable time delay between them are used to investigate the processes happening during a chemical reaction. The first pulse (pump) initiates the reaction, by breaking a bond or exciting one of the reactants. The second pulse (probe) is then used to interrogate the progress of the reaction a certain period of time after initiation. As the reaction progresses, the response of the reacting system to the probe pulse will change. By continually scanning the time delay between pump and probe pulses and observing the response, workers can reconstruct the progress of the reaction as a function of time. 1964: 1394: 1418: 1430: 20: 1976: 1406: 23: 22: 27: 26: 21: 28: 25: 77:
Many publications have discussed the possibility of controlling chemical reactions by this method, but this remains controversial. The steps in some reactions occur in the femtosecond timescale and sometimes in
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dissociation. When dissociated by a 400 nm laser pulse, electrons completely localize onto individual atoms after 140 fs, with Br atoms separated by 6.0 Ă… after 160 fs.
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published an article using this term for the first time, stating "Real-time femtochemistry, that is, chemistry on the femtosecond timescale...". Later in 1999, Zewail received the
51:, hence the name) in order to study the very act of atoms within molecules (reactants) rearranging themselves to form new molecules (products). In a 1988 issue of the journal 271:
Lu, Jia; Kadakkuzha, Beena M.; Zhao, Liang; et al. (2011). "Dynamic Ensemble View of the Conformational Landscape of HIV-1 TAR RNA and Allosteric Recognition".
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for his pioneering work in this field showing that it is possible to see how atoms in a molecule move during a chemical reaction with flashes of
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Kadakkuzha, B. M.; Zhao, L.; Xia, T. (2009). "Conformational Distribution and Ultrafast Base Dynamics of Leadzyme".
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Application of femtochemistry in biological studies has also helped to elucidate the conformational dynamics of
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The simplest approach and still one of the most common techniques is known as pump–probe
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Kling, Matthias F.; Vrakking, Marc J. J. (1 May 2008). "Attosecond Electron Dynamics".
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Femtochemistry has been used to show the time-resolved electronic stages of
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Controlling and probing atoms and molecules with ultrafast laser pulses
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on extremely short timescales (approximately 10 seconds or one
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Femtochemistry: Ultrafast Dynamics of the Chemical Bond
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Zewail, A. H. (1988-12-23). "Laser Femtochemistry".
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(November 23, 2010). 89: 1902:Inelastic electron tunneling spectroscopy 1582:Resonance-enhanced multiphoton ionization 497: 400: 390: 344:10.1146/annurev.physchem.59.032607.093532 1670:Extended X-ray absorption fine structure 451:, Ahmed H Zewail, World Scientific, 1994 18: 312:, Vol. 72, No. 12, pp. 2219–2231, 2000. 106: 1995: 164: 1450: 471: 299: 1975: 1405: 82:timescales, and will sometimes form 1429: 324:Annual Review of Physical Chemistry 13: 421: 364: 14: 2024: 1887:Deep-level transient spectroscopy 1639:Saturated absorption spectroscopy 455: 224:The 1999 Nobel Prize in Chemistry 1974: 1963: 1962: 1892:Dual-polarization interferometry 1476: 1428: 1416: 1404: 1393: 1392: 1907:Scanning tunneling spectroscopy 1882:Circular dichroism spectroscopy 1877:Acoustic resonance spectroscopy 1836:Fourier-transform spectroscopy 1524:Vibrational circular dichroism 264: 229: 217: 158: 1: 1634:Cavity ring-down spectroscopy 1539:Thermal infrared spectroscopy 757:Interface and colloid science 511:Glossary of chemical formulae 187:10.1126/science.242.4886.1645 151: 1768:Inelastic neutron scattering 136:Ultrafast laser spectroscopy 7: 1829:Data collection, processing 1705:Photoelectron/photoemission 1034:Bioorganometallic chemistry 521:List of inorganic compounds 226:, article on nobelprize.org 118: 101: 10: 2029: 1914:Photoacoustic spectroscopy 1856:Time-resolved spectroscopy 960:Dynamic covalent chemistry 931:Enantioselective synthesis 911:Physical organic chemistry 864:Organolanthanide chemistry 1958: 1940:Astronomical spectroscopy 1932: 1919:Photothermal spectroscopy 1869: 1828: 1821: 1783: 1755: 1697: 1647: 1547: 1484: 1388: 1291: 1052: 968: 889: 839: 715: 658: 549:Electroanalytical methods 534: 506: 427:Andrew M. Weiner (2009). 1304:Nobel Prize in Chemistry 1220:Supramolecular chemistry 859:Organometallic chemistry 61:Nobel Prize in Chemistry 1924:Pump–probe spectroscopy 1813:Ferromagnetic resonance 1605:Laser-induced breakdown 1242:Combinatorial chemistry 1153:Food physical chemistry 1116:Environmental chemistry 1000:Bioorthogonal chemistry 926:Retrosynthetic analysis 747:Chemical thermodynamics 730:Spectroelectrochemistry 673:Computational chemistry 392:10.1073/pnas.1014723107 90:Pump–probe spectroscopy 2008:Ultrafast spectroscopy 1620:Glow-discharge optical 1600:Raman optical activity 1514:Rotational–vibrational 1314:of element discoveries 1160:Agricultural chemistry 1148:Carbohydrate chemistry 1039:Bioinorganic chemistry 904:Alkane stereochemistry 849:Coordination chemistry 678:Mathematical chemistry 544:Instrumental chemistry 33: 1841:Hyperspectral imaging 1309:Timeline of chemistry 1206:Post-mortem chemistry 1191:Clandestine chemistry 1121:Atmospheric chemistry 1044:Biophysical chemistry 876:Solid-state chemistry 826:Equilibrium chemistry 735:Photoelectrochemistry 127:(1 attosecond = 10 s) 84:intermediate products 32:Pump-probe techniques 31: 1593:Coherent anti-Stokes 1548:UV–Vis–NIR "Optical" 1299:History of chemistry 1254:Chemical engineering 1029:Bioorganic chemistry 779:Structural chemistry 516:List of biomolecules 107:Bromine dissociation 1897:Hadron spectroscopy 1687:Conversion electron 1648:X-ray and Gamma ray 1555:Ultraviolet–visible 1322:The central science 1276:Ceramic engineering 1201:Forensic toxicology 1174:Chemistry education 1072:Radiation chemistry 1054:Interdisciplinarity 1007:Medicinal chemistry 945:Fullerene chemistry 821:Microwave chemistry 690:Molecular mechanics 685:Molecular modelling 383:2010PNAS..10720219L 377:(47): 20219–20222. 336:2008ARPC...59..463K 179:1988Sci...242.1645Z 173:(4886): 1645–1653. 57:Ahmed Hassan Zewail 2003:Physical chemistry 1945:Force spectroscopy 1870:Measured phenomena 1861:Video spectroscopy 1565:Cold vapour atomic 1365:Chemical substance 1227:Chemical synthesis 1196:Forensic chemistry 1077:Actinide chemistry 1019:Clinical chemistry 700:Molecular geometry 695:Molecular dynamics 650:Elemental analysis 603:Separation process 125:Attosecond physics 45:chemical reactions 41:physical chemistry 34: 1990: 1989: 1954: 1953: 1846:Spectrophotometry 1773:Neutron spin echo 1747:Beta spectroscopy 1660:Energy-dispersive 1444: 1443: 1380:Quantum mechanics 1345:Chemical compound 1328:Chemical reaction 1266:Materials science 1184:General chemistry 1179:Amateur chemistry 1107:Photogeochemistry 1092:Stellar chemistry 1062:Nuclear chemistry 983:Molecular biology 950:Polymer chemistry 921:Organic synthesis 916:Organic reactions 881:Ceramic chemistry 871:Cluster chemistry 801:Chemical kinetics 789:Molecular physics 668:Quantum chemistry 581:Mass spectrometry 440:978-0-471-41539-8 285:10.1021/bi200495d 279:(22): 5042–5057. 250:10.1021/bi900256q 244:(22): 3807–3809. 29: 2020: 1978: 1977: 1966: 1965: 1826: 1825: 1737:phenomenological 1486:Vibrational (IR) 1471: 1464: 1457: 1448: 1447: 1432: 1431: 1420: 1408: 1407: 1396: 1395: 1340:Chemical element 995:Chemical biology 854:Magnetochemistry 831:Mechanochemistry 784:Chemical physics 725:Electrochemistry 630:Characterization 492: 485: 478: 469: 468: 444: 430:Ultrafast Optics 415: 414: 404: 394: 362: 356: 355: 319: 313: 310:Pure Appl. Chem. 308:. A. H. Zewail, 303: 297: 296: 268: 262: 261: 233: 227: 221: 215: 214: 162: 146:Flash photolysis 141:Ultrashort pulse 74:RNA structures. 30: 2028: 2027: 2023: 2022: 2021: 2019: 2018: 2017: 1993: 1992: 1991: 1986: 1950: 1928: 1865: 1817: 1779: 1751: 1693: 1643: 1543: 1504:Resonance Raman 1480: 1475: 1445: 1440: 1384: 1287: 1281:Polymer science 1237:Click chemistry 1232:Green chemistry 1126:Ocean chemistry 1102:Biogeochemistry 1048: 964: 936:Total synthesis 899:Stereochemistry 885: 835: 752:Surface science 742:Thermochemistry 711: 654: 625:Crystallography 530: 502: 496: 458: 441: 424: 422:Further reading 419: 418: 363: 359: 320: 316: 304: 300: 269: 265: 234: 230: 222: 218: 163: 159: 154: 131:Femtotechnology 121: 109: 104: 92: 39:is the area of 19: 17: 12: 11: 5: 2026: 2016: 2015: 2013:Photochemistry 2010: 2005: 1988: 1987: 1985: 1984: 1972: 1959: 1956: 1955: 1952: 1951: 1949: 1948: 1942: 1936: 1934: 1930: 1929: 1927: 1926: 1921: 1916: 1911: 1910: 1909: 1899: 1894: 1889: 1884: 1879: 1873: 1871: 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608:Chromatography 605: 600: 599: 598: 593: 588: 578: 577: 576: 571: 566: 561: 551: 546: 540: 538: 532: 531: 529: 528: 526:Periodic table 523: 518: 513: 507: 504: 503: 495: 494: 487: 480: 472: 466: 465: 457: 456:External links 454: 453: 452: 439: 423: 420: 417: 416: 357: 330:(1): 463–492. 314: 298: 263: 228: 216: 156: 155: 153: 150: 149: 148: 143: 138: 133: 128: 120: 117: 108: 105: 103: 100: 91: 88: 37:Femtochemistry 15: 9: 6: 4: 3: 2: 2025: 2014: 2011: 2009: 2006: 2004: 2001: 2000: 1998: 1983: 1982: 1973: 1971: 1970: 1961: 1960: 1957: 1946: 1943: 1941: 1938: 1937: 1935: 1931: 1925: 1922: 1920: 1917: 1915: 1912: 1908: 1905: 1904: 1903: 1900: 1898: 1895: 1893: 1890: 1888: 1885: 1883: 1880: 1878: 1875: 1874: 1872: 1868: 1862: 1859: 1857: 1854: 1852: 1849: 1847: 1844: 1842: 1839: 1837: 1834: 1833: 1831: 1827: 1824: 1820: 1814: 1811: 1809: 1806: 1804: 1801: 1797: 1794: 1793: 1792: 1789: 1788: 1786: 1782: 1774: 1771: 1770: 1769: 1766: 1764: 1761: 1760: 1758: 1754: 1748: 1745: 1743: 1740: 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1290: 1282: 1279: 1277: 1274: 1272: 1269: 1268: 1267: 1264: 1260: 1259:Stoichiometry 1257: 1256: 1255: 1252: 1248: 1245: 1243: 1240: 1238: 1235: 1233: 1230: 1229: 1228: 1225: 1221: 1218: 1217: 1216: 1215:Nanochemistry 1213: 1212: 1207: 1204: 1202: 1199: 1198: 1197: 1194: 1192: 1189: 1185: 1182: 1180: 1177: 1176: 1175: 1172: 1171: 1166: 1163: 1162: 1161: 1158: 1154: 1151: 1149: 1146: 1145: 1144: 1141: 1139: 1136: 1134: 1131: 1127: 1124: 1122: 1119: 1118: 1117: 1114: 1113: 1108: 1105: 1103: 1100: 1099: 1098: 1095: 1093: 1089: 1085: 1082: 1078: 1075: 1073: 1070: 1068: 1065: 1064: 1063: 1060: 1059: 1057: 1055: 1051: 1045: 1042: 1040: 1037: 1035: 1032: 1030: 1027: 1025: 1022: 1020: 1017: 1013: 1010: 1009: 1008: 1005: 1001: 998: 997: 996: 993: 989: 986: 984: 981: 980: 979: 976: 975: 973: 971: 967: 961: 958: 956: 953: 951: 948: 946: 943: 941: 940:Semisynthesis 937: 934: 932: 929: 927: 924: 922: 919: 917: 914: 912: 909: 905: 902: 901: 900: 897: 896: 894: 892: 888: 882: 879: 877: 874: 872: 869: 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152:References 80:attosecond 1803:Terahertz 1784:Radiowave 1682:Mössbauer 1333:Catalysis 841:Inorganic 635:Titration 500:chemistry 433:. Wiley. 211:220103588 195:0036-8075 72:stem-loop 1969:Category 1698:Electron 1665:Emission 1615:emission 1572:Vibronic 1399:Category 1355:Molecule 1292:See also 717:Physical 411:21059945 352:18031218 293:21553929 258:19301929 203:17730575 119:See also 102:Examples 1981:Commons 1808:ESR/EPR 1756:Nucleon 1584:(REMPI) 1411:Commons 1375:Alchemy 891:Organic 402:2996685 379:Bibcode 332:Bibcode 175:Bibcode 167:Science 113:bromine 67:light. 53:Science 1822:Others 1610:Atomic 1423:Portal 569:UV-Vis 437:  409:  399:  350:  291:  256:  209:  201:  193:  1763:Alpha 1732:Auger 1710:X-ray 1677:Gamma 1655:X-ray 1588:Raman 1499:Raman 1494:FT-IR 596:MALDI 564:Raman 207:S2CID 65:laser 1350:Atom 618:HPLC 435:ISBN 407:PMID 371:PNAS 348:PMID 289:PMID 254:PMID 199:PMID 191:ISSN 1791:NMR 1360:Ion 591:ICP 574:NMR 397:PMC 387:doi 375:107 340:doi 281:doi 246:doi 183:doi 171:242 1999:: 1796:2D 1715:UV 1090:/ 1086:/ 938:/ 613:GC 586:EI 559:IR 405:. 395:. 385:. 373:. 369:. 346:. 338:. 328:59 326:. 287:. 277:50 275:. 252:. 242:48 240:. 205:. 197:. 189:. 181:. 169:. 55:, 1470:e 1463:t 1456:v 1324:" 1320:" 491:e 484:t 477:v 443:. 413:. 389:: 381:: 354:. 342:: 334:: 295:. 283:: 260:. 248:: 213:. 185:: 177::

Index

physical chemistry
chemical reactions
femtosecond
Ahmed Hassan Zewail
Nobel Prize in Chemistry
laser
stem-loop
attosecond
intermediate products
spectroscopy
bromine
Attosecond physics
Femtotechnology
Ultrafast laser spectroscopy
Ultrashort pulse
Flash photolysis
Bibcode
1988Sci...242.1645Z
doi
10.1126/science.242.4886.1645
ISSN
0036-8075
PMID
17730575
S2CID
220103588
The 1999 Nobel Prize in Chemistry
doi
10.1021/bi900256q
PMID

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