Alphabetical Index

Additional Indexes

Physical Constants Units of Measure Physical Quantities SI Prefixes Ring Index General Formulae Exact Formulae Source Documents Terms by IUPAC Div.

Version 3.0.1 (6463 Terms)

DOI: 10.1351/goldbook

Jan Kaiser - Content Editor
Stuart Chalk - Technical Editor
Joint Subcommittee
on the IUPAC Gold Book

Terms sourced from: 10.1351/pac199668122223

"Glossary of terms used in photochemistry (IUPAC Recommendations 1996)", Verhoeven, J.W., Pure and Applied Chemistry 1996, 68(12), 2223

absorbance \(A\)absorptance \(\alpha\)absorption absorption coefficient absorption cross-section \(\sigma\)absorptivity actinometer action spectrum adiabatic electron transfer adiabatic photoreaction annihilation antimony–xenon lamp (arc) apparent lifetime argon ion laser attenuance \(D\)attenuance filter auxochrome avoided crossing ADMR anti-Stokes shift

back electron transfer bandgap energy \(E_{\text{g}}\)bandpass filter Barton reaction bathochromic shift (effect) Beer–Lambert law bioluminescence bleaching blue shift

carbon dioxide laser cavity dumping charge hopping charge recombination charge separation charge shift charge-transfer transition to solvent charge-transfer (CT) state charge-transfer (CT) transition chemical laser chemiexcitation chemiluminescence chromophore Chemically Induced Dynamic Electron Polarization Chemically Induced Dynamic Nuclear Polarization Chemically Initiated Electron Exchange Luminescence coherent radiation collision complex conduction band configuration (electronic) configuration interaction conversion spectrum copper vapour laser correlation diagram correlation energy crystal field splitting CT current yield cut-off filter CW cadium–helium laser critical quenching radius \(r_{0}\)

dark photochemistry (photochemistry without light) Davydov splitting deactivation delayed fluorescence depth of penetration Dexter excitation transfer diabatic electron transfer diabatic photoreaction diode laser dipolar mechanism doublet state driving force (affinity) of a reaction \(A\)dye laser DEDMR DFDMR dynamic quenching

effectiveness efficiency \(\eta\)efficiency spectrum einstein electrogenerated chemiluminescence electron correlation electron exchange excitation transfer electron transfer electron transfer photosensitization electronic energy migration (or hopping) electronically excited state electrophotography emission emission spectrum emittance \(\varepsilon\)encounter complex encounter pair energy migration energy storage efficiency \(\eta\)energy transfer energy transfer plot enhancer excimer excimer laser exciplex excitation spectrum excitation transfer excited state exciton exitance external heavy atom effect exterplex extinction extinction coefficient electrochemiluminescence electrochromic effect electroluminescence energy pooling ESCA

f number Fermi level \(E_{\text{F}}\)flash photolysis fluence \(F\),\(\varPsi \),\(H_{0}\)Förster cycle Förster excitation transfer Fourier transform spectrometer Franck–Condon principle free electron laser free-running laser frequency \(f\),\(\nu \)frequency doubling FWHM (Full Width at Half Maximum) factor-group splitting Franck–Condon state

gas laser Gaussian band shape ground state

half-width Hammond–Herkstroeter plot harmonic frequency generation harpoon mechanism heavy atom effect helium–cadmium laser helium–neon laser Herkstroeter plot heteroexcimer high-pressure mercury lamp (arc) hole burning hole transfer hot ground state reaction hot quartz lamp hot state reaction Hush model hyperchromic effect hypochromic effect hypsochromic shift Hund rules

imaging (photoimaging) incoherent radiation inner-sphere electron transfer integrating sphere intended crossing intensity interferometer internal conversion intersystem crossing intervalence charge transfer inverted region (for electron transfer) isoabsorption point isoclinic point inner filter effect

Jablonski diagram

Kaptein–Closs rules Kasha–Vavilov rule krypton ion laser

Lambert law lamp Laporte rule laser lasing latent image ligand field splitting ligand to ligand charge transfer (LLCT) transition ligand to metal charge transfer (LMCT) transition light source Lorentzian band shape luminescence lumiphore

Marcus inverted region (for electron transfer) Marcus–Hush relationship merry-go-round reactor metal to ligand charge transfer (MLCT) transition metal to metal charge transfer (MMCT) transition mode-locked laser multiphoton absorption multiphoton process multiplicity

n → π* state n → π* transition n → σ* transition neodymium laser nitrogen laser non-linear optical effect non-radiative decay nonadiabatic electron transfer nonadiabatic photoreaction

optically detected magnetic resonance optical density optical filter oscillator strength \(f_{ij}\)outer-sphere electron transfer oxa-di-π-methane rearrangement

π – π* state π → π* transition Paterno–Büchi reaction phosphorescence photo-Fries rearrangement photoacoustic effect photoacoustic spectroscopy photoassisted catalysis photochemical hole burning photochemistry photoconductivity photocrosslinking photocurrent yield photodegradation photodetachment photodynamic effect photoelectrical effect photoelectrochemical cell photoelectrochemical etching photoelectrochemistry photoelectron spectroscopy photoexcitation photogalvanic cell photoinduced electron transfer photoinduced polymerization photoinitiation photoionization photon photon flow \(\mathit{\Phi} _{\text{p}}\)photooxidation photooxygenation photophysical processes photopolymerization photoreduction photoresist photosensitization photosensitizer photostationary state photothermal effect photothermography photovoltaic cell piezoluminescence population inversion precursor complex predissociation primary photochemical process primary (photo)process primary (photo)product

Q-switched laser quantum counter quantum efficiency quantum quartet state quencher quenching constant

radiant energy \(Q\)radiationless transition radiative transition radical pair radioluminescence red shift relative spectral responsivity resonance absorption technique resonance fluorescence resonance fluorescence technique resonance line resonance radiation rovibronic state ruby laser Rydberg orbital Rydberg transition

π → σ* transition σ → σ* transition sacrificial acceptor sacrificial donor scintillators selection rule self-absorption self-quenching sensitization sensitizer simultaneous pair transitions singlet state singlet-singlet annihilation singlet-singlet energy transfer singlet-triplet energy transfer solar conversion efficiency solid state lasers solvatochromism solvent shift sonoluminescence spectral irradiance \(E_{\lambda}\)spectral overlap spectral (photon) effectiveness spectral photon exitance \(M_{\text{p}\lambda}\)spectral photon flow \(\varPhi_{\text{p}\lambda}\)spectral photon flux \(E_{\text{p}\lambda}\)spectral photon radiance \(L_{\text{p}\lambda}\)spectral radiance \(L_{\lambda}\)spectral radiant exitance \(M_{\lambda}\)spectral radiant flux spectral radiant intensity \(I_{\lambda}\)spectral radiant power \(P_{\lambda}\)spectral responsivity spectral sensitization spherical radiance spherical radiant exposure spin conservation rule spin-allowed electronic transition spin-orbit coupling spin-orbit splitting spin–spin coupling spontaneous emission Stark effect state crossing state diagram Stern–Volmer kinetic relationships stimulated emission Stokes shift superexchange interaction superradiance surface crossing

thermal lensing thermally activated delayed fluorescence thermochromism thermoluminescence through-bond electron transfer through-space electron transfer TICT emission TICT state time-correlated single photon counting time-resolved spectroscopy transient spectroscopy transition polarization transmittance \(T\),\(\tau\)triboluminescence triplet state triplet-triplet annihilation triplet-triplet energy transfer triplet-triplet transitions tunnelling two-photon excitation two-photon process

UV dose UV photoelectron spectroscopy UV stabilizer

Vavilov rule vibrational redistribution vibrational relaxation vibronic coupling vibronic transition

wavelength \(\lambda\)wavenumber \(\sigma\),\(\tilde{\nu }\)Wood horn

xenon lamp

Zeeman effect zero field splitting zero–zero (0–0) absorption or emission