ライフサイエンスコーパス: internal conversion

1 tion returns directly to the ground state by internal conversion.

2 opulation of P* decays in ~150 ps largely by internal conversion.

3 ground-state potential energy surface after internal conversion.

4 ormation of the proper geometry for reactive internal conversion.

5 tions in unstacked bases decay via ultrafast internal conversion.

6 ted state, which may account for the greater internal conversion.

7 bination of excited-state autodetachment and internal conversion.

8 y forbidden excited state, populated through internal conversion.

9 tor vibrations simply accompanying ultrafast internal conversion.

10 mall lambda(int) that greatly suppresses the internal conversion.

11 es of freedom, initially involving ultrafast internal conversion.

12 (beta+)=77 %)/(58m)Co(2+/3+) (t(1/2)=9.10 h, internal conversion=100 %) radioisotope pair is of inter

13 solvation time (300 femtoseconds) after the internal conversion [140 femtoseconds for (H2O)35-] was

14 of visible excitation energies via ultrafast internal conversion among neighboring coupled chromophor

15 effects on the rates of competing channels (internal conversion and competitive photoreactions) than

16 ited-state deactivation processes due to the internal conversion and intersystem crossing at the Fran

17 Time-resolved spectroscopy reveals ultrafast internal conversion and intersystem crossing, along with

18 Thus, the entire process of internal conversion and vibrational relaxation to therma

19 11)-10(12) s(-1)), which is competitive with internal conversion and/or vibrational relaxation, as co

20 d state, the mechanism is sequential: (i) an internal conversion between singlets (1)nn* (1)nn* (85 f

21 rossing (1)nn* (3)nn* (2.0 ps), and (iii) an internal conversion between triplets (3)nn* (3)nn* (602

22 The first is the subpicosecond internal conversion channel first characterized in 2000.

23 es that block access to unproductive singlet internal conversion conical intersections, which have re

24 ion consequently occurs through nonadiabatic internal conversion driven by a 50 cm(-1) coupling resul

25 spectroscopy measurements, that reveal this internal conversion dynamics to be slightly slower in ch

26 We achieve internal conversion efficiencies of 61.5%, significantly

27 onversion between photonic modes achieved an internal conversion efficiency [Formula: see text] and a

28 The best internal conversion efficiency achieved for the fabricat

29 it voltage, the maximum output power and the internal conversion efficiency decreased when the temper

30 We measure pump-to-comb internal conversion efficiency exceeding 93% (34% out-co

31 We measured an internal conversion efficiency of 58(11)%, a conversion

32 using a similar waveguide, which attains 34% internal conversion efficiency.

33 s as well as beta(-) particles and Auger and internal conversion electrons useful for radiotherapy.

34 the porphyrin monomer (intersystem crossing, internal conversion, fluorescence).

35 The relaxation pathway involves a rapid internal conversion followed by slow ground-state coolin

36 We show that the internal conversion from a bright high-energy singlet ex

37 e singlet carbene is generated on S(0) after internal conversion from S(1).

38 eptide bond to dissociation are due to rapid internal conversion from the excited state to the ground

39 at collinear O-H-H geometries following fast internal conversion from the initially excited [Formula:

40 igma bond dissociation largely happens after internal conversion from the pericyclic minimum to the e

41 lenging, as the energy gap law dictates that internal conversion-governed by the emission energy gap

42 In contrast, a fast, nonradiative internal conversion governs the deactivation of D(5h)-C(

43 Valence-to-non-valence internal conversion has hitherto not been observed in th

44 toexcited CS(2) molecules, where the role of internal conversion (IC) and intersystem crossing (ISC)

45 gligible wavelength-dependent changes in the internal conversion (IC) and ISC events is still lacking

46 Additional deleterious processes, such as internal conversion (IC) and vibrational relaxation (VR)

47 Internal conversion (IC) has been considered as one of t

48 C) occurs in hundreds of femtoseconds, while internal conversion (IC) in the triplet manifold is slow

49 Internal conversion (IC) often is the dominating relaxat

50 doublet ((2)S(1)) state is formed; ultrafast internal conversion (IC) then produces a tripdoublet ((2

51 es for each type of particle emission (Auger/internal conversion [IC] electrons and beta(-) particles

52 s attributed to s-state electrons just after internal conversion in a nonequilibrated solvent environ

53 occur at the local site, including ultrafast internal conversion in hundreds of femtoseconds, vibrati

54 mophore is not responsible for the ultrafast internal conversion in the adenine and guanine monomers.

55 ogether with quantum yields of fluorescence, internal conversion, intersystem crossing, and singlet o

56 The short-lived excited state suggests that internal conversion, intersystem crossing, and/or dissoc

57 The pipi*/npi* internal conversion is difficult to investigate, as most

58 that extrapolate linearly with 1/n toward an internal conversion lifetime of 50 fs in bulk water.

59 s a 50-femtosecond eaq-(p)-->eaq-(s(dagger)) internal conversion lifetime.

60 iton fission (SEF) is initiated by ultrafast internal conversion of a singlet exciton into a correlat

61 in which active processes are driven by the internal conversion of chemical energy into work.

62 Thus, we theorize that internal conversion of S(1A) to a vibrationally hot S(0)

63 olution, such as protonated tryptophan, full internal conversion of the absorbed 248-nm photon occurs

64 fission in pentacene proceeds through rapid internal conversion of the photoexcited state into a dar

65 ct ion distributions that correspond to full internal conversion of the photon energy (loss of approx

66 oximately 11 water molecules) and to partial internal conversion of the photon energy and emission of

67 Internal conversion of the S(1) excited state to the gro

68 urfaces, but it is unknown how the ultrafast internal conversion of two nearly degenerate states of T

69 a and intermolecular hydrogen bonds suppress internal conversions of the upper excited states in the

70 decay with concomitant s-state repopulation (internal conversion) on time scales ranging from 180 to

71 e NIR(II) region is hampered by the dominant internal conversion operated by the energy gap law, wher

72 and energy surface intersections leading to internal conversion or intersystem crossings.

73 and cooling of hot polyyne chains, following internal conversion (over approximately 5 ps).

74 ution permits direct observation of the fast internal conversion process for both the pyrene and nitr

75 To understand this nonstatistical internal conversion process, these results are compared

76 rounding water molecules slows the S(1)/S(0) internal conversion process.

77 having no bridging group is attributed to an internal conversion process.

78 ain excitonic state, directly accessible via internal conversion processes.

79 e explained by a significant decrease in the internal conversion rate of the first excited singlet st

80 ticular, the short dephasing times and rapid internal conversion rates are major obstacles.

81 nonfluorescent, which is attributed to fast internal conversion relative to radiative decay and inte

82 ocycles are planar in their ground state and internal conversion requires symmetry breaking.

83 erse intersystem crossing (RISC) and reverse internal conversion (RIC) and the determination of the a

84 transoid-cis form is perturbed, favoring the internal conversion S(1) -> S(0) process as photostabili

85 edge, and unambiguously show that pipi*/npi* internal conversion takes place within (60 +/- 30) fs.

86 broad absorption may be explained by a rapid internal conversion that makes this specific base pair a

87 ole forms in the n orbital during pipi*/npi* internal conversion, the absorption spectrum at the hete

88 tic energy transfer steps resemble molecular internal conversion through a nested intermolecular funn

89 rapidly decays by magnetic exchange-enhanced internal conversion to a (2)T(1) (T = chromophore excite

90 This allows the S(2) -> S(1) internal conversion to occur efficiently in the vicinity

91 s, excitation to S(1) results in nonreactive internal conversion to S(0).

92 has a lifetime of ca. 8 ps before undergoing internal conversion to S(1).

93 (16.6+/-1.2 %) and a slower dissociation via internal conversion to the 3s state (83.4+/-1.2 %).

94 Furthermore, we found that suppression of internal conversion to the dark S1 state by restricting

95 t absorption signals show that subpicosecond internal conversion to the electronic ground state takes

96 but decayed on a subpicosecond time scale by internal conversion to the electronic ground state.

97 ions suggest that these channels result from internal conversion to the ground electronic state follo

98 e radical anion by solvent stabilization and internal conversion to the ground electronic state.

99 time constant and is trifurcated to give (1) internal conversion to the ground state ( approximately

100 This excited state branches between internal conversion to the ground state and formation of

101 r high degree of photostability to ultrafast internal conversion to the ground state and low triplet

102 cceleration of the ring-opening motion after internal conversion to the ground state due to a steepen

103 PhEtyCbl undergoes internal conversion to the ground state with near unit q

104 /- 20 ps and to decay exclusively (>95%) via internal conversion to the ground state, with no evidenc

105 hway is essentially barrierless and involves internal conversion to the ground-state surface via coni

106 ced two-photon absorption, followed by rapid internal conversion to the low-lying S(1) state.

107 is decay involves competition between direct internal conversion to the S(0) state (~40%) and rapid i

108 tion from the S(n) state in competition with internal conversion to the S(1) state in 300 fs.

109 rine S(2) state (<4 ps), in competition with internal conversion to the S(1) state.

110 itially excited S(2)(paipai*) state involves internal conversion to the S(1)(npai*) state with a time

111 of multistep chemical reactions triggered by internal conversion via a conical intersection is a chal

112 Following internal conversion, vibrationally highly excited ground

113 Electronic state changes (S(1)->S(0) internal conversion) were reflected by a strong transien

114 e conical intersection seams that facilitate internal conversion, which is a rare event in both syste

115 for an efficient nonadiabatic S(1) --> S(0) internal conversion, which is followed by a fast ground-

116 ultrafast enhanced intersystem crossing and internal conversion with tau approximately = 2 ps to giv

117 usters with n > or = 25 decay exclusively by internal conversion, with relaxation times that extrapol

118 -bond torsion as an important contributor to internal conversion within this important class of chrom