1
|
Peng Q, Niu Y, Wang Z, Jiang Y, Li Y, Liu Y, Shuai Z. Theoretical predictions of red and near-infrared strongly emitting X-annulated rylenes. J Chem Phys 2011; 134:074510. [PMID: 21341862 PMCID: PMC3071303 DOI: 10.1063/1.3549143] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 01/07/2011] [Indexed: 12/22/2022] Open
Abstract
The optical properties of rylenes are extremely interesting because their emission colors can be tuned from blue to near-infrared by simply elongating the chain length. However, for conjugated chains, the dipole-allowed odd-parity 1B(u) excited state often lies above the dipole-forbidden even-parity 2A(g) state as the chain length increases, thus preventing any significant luminescence according to Kasha's rule. We systemically investigated the 1B(u)∕2A(g) crossover behaviors with respect to the elongating rylene chain length with various quantum chemistry approaches, such as time-depended density functional theory (TDDFT), complete active space self-consistent field theory (CASSCF∕CASPT2), multireference configuration interaction (MRCI)∕Zerner's intermediate neglect of diatomic overlap (ZINDO), and MRCI∕modified neglect of differential overlap. The calculated results by CASSCF∕CASPT2 and MRCI∕ZINDO are completely coherent: the optical active 1B(u) state lies below the dark B(3g) or 2A(g) state for perylene and terrylene, which results in strong fluorescence; while a crossover to S(1) = 2A(g) occurs and leads to much weaker fluorescence for quaterrylene. Then we put forward a molecular design rule on how to recover fluorescence for the longer rylenes by introducing heteroatom bridges. Several heteroatom-annulated rylenes are designed theoretically, which are predicted to be strongly emissive in the red and near-infrared ranges. These are further confirmed by theoretical emission spectra as well as radiative and nonradiative decay rate calculations by using the vibration correlation function formalisms we developed earlier coupled with TDDFT.
Collapse
Affiliation(s)
- Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
2
|
Peng Q, Niu Y, Deng C, Shuai Z. Vibration correlation function formalism of radiative and non-radiative rates for complex molecules. Chem Phys 2010. [DOI: 10.1016/j.chemphys.2010.03.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
4
|
Tatchen J, Pollak E. Ab initiospectroscopy and photoinduced cooling of thetrans-stilbene molecule. J Chem Phys 2008; 128:164303. [DOI: 10.1063/1.2895041] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
5
|
Ianconescu R, Pollak E. Theory of coherent thermal photoinduced electron transfer reactions in polyatomic molecules. Mol Phys 2006. [DOI: 10.1080/00268970500373346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
6
|
Banerjee S, Gangopadhyay G. Laser cooling of vibrational degrees of freedom of a molecular system. J Chem Phys 2005; 123:114304. [PMID: 16392556 DOI: 10.1063/1.2032928] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
We consider the cooling of vibrational degrees of freedom in a photoinduced excited electronic state of a model molecular system. For the various parameters of the potential surfaces of the ground and excited electronic states and depending on the excitation frequency of a single-mode laser light, the average energy or average vibrational temperature of the excited state passes through a minimum. The amount of cooling is quantified in terms of the overlap integral between the ground and excited electronic states of the molecule. We have given an approach to calculate the Franck-Condon factor for a multimode displaced-distorted-rotated oscillator surface of the molecular system. This is subsequently used to study the effect of displacement, distortion, and Duschinsky rotation on the vibrational cooling in the excited state. The absorption spectra and also the average energy or the effective temperature of the excited electronic state are studied for the above model molecular system. Considering the non-Condon effect for the symmetry-forbidden transitions, we have discussed the absorption spectra and average temperature in the excited-state vibrational manifold.
Collapse
Affiliation(s)
- Sumana Banerjee
- SN Bose National Centre for Basic Sciences, JD Block, Sector III, Salt Lake, Kolkata, India.
| | | |
Collapse
|
7
|
Zhang ML, Pollak E. Harmonic Theory of Thermal Two-Photon Absorption in Benzene. J Phys Chem A 2004; 109:122-32. [PMID: 16839096 DOI: 10.1021/jp046743e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A correlation function formalism is applied to compute the two-photon absorption spectrum of benzene. Using harmonic Hamiltonians for the ground and excited electronic states, we find that the theory agrees qualitatively with the experimentally observed sparsity of the thermal two-photon absorption spectrum as compared with the single-photon absorption spectrum. An expression for the average vibrational energy in the excited state is derived. We find that cooling of the nascent vibrational energy in the electronically excited state is not as extensive in the two-photon absorption process as compared to the single-photon case.
Collapse
Affiliation(s)
- Ming-Liang Zhang
- Chemical Physics Department, Weizmann Institute of Science, Rehovot 76100, Israel
| | | |
Collapse
|
8
|
Ianconescu R, Pollak E. Photoinduced Cooling of Polyatomic Molecules in an Electronically Excited State in the Presence of Dushinskii Rotations. J Phys Chem A 2004. [DOI: 10.1021/jp037739q] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Reuven Ianconescu
- Chemical Physics Department, Weizmann Institute of Science, 76100 Rehovot, Israel
| | - Eli Pollak
- Chemical Physics Department, Weizmann Institute of Science, 76100 Rehovot, Israel
| |
Collapse
|
9
|
Leitner DM, Levine B, Quenneville J, Martínez TJ, Wolynes PG. Quantum Energy Flow and trans-Stilbene Photoisomerization: an Example of a Non-RRKM Reaction. J Phys Chem A 2003. [DOI: 10.1021/jp0305180] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- David M. Leitner
- Department of Chemistry and Chemical Physics Program, University of Nevada, Reno, Nevada 89557, Department of Chemistry and the Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, and Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093
| | - Benjamin Levine
- Department of Chemistry and Chemical Physics Program, University of Nevada, Reno, Nevada 89557, Department of Chemistry and the Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, and Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093
| | - Jason Quenneville
- Department of Chemistry and Chemical Physics Program, University of Nevada, Reno, Nevada 89557, Department of Chemistry and the Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, and Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093
| | - Todd J. Martínez
- Department of Chemistry and Chemical Physics Program, University of Nevada, Reno, Nevada 89557, Department of Chemistry and the Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, and Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093
| | - Peter G. Wolynes
- Department of Chemistry and Chemical Physics Program, University of Nevada, Reno, Nevada 89557, Department of Chemistry and the Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, and Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093
| |
Collapse
|