nπ-ct-π* transitions:: nπ* transitions of the second kind

被引：12

作者：

Kosower, EM ^{[1
]}

De Souza, JR ^{[1
]}

机构：

[1] Tel Aviv Univ, Sch Chem, Biophys Organ Chem Unit, IL-69978 Tel Aviv, Israel

来源：

CHEMICAL PHYSICS | 2006年 / 324卷 / 01期

关键词：

maleimides; bimanes [syn-bicyclo[3.3.0]octadienediones; charge-transfer absorptions; charge-transfer emissions; n(pi)-ct ->pi* transitions; two n(pi)-ct ->pi* transitions; solvent effects;

D O I：

10.1016/j.chemphys.2005.08.067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two important classes of molecules, maleimides and syn-bimanes [syn-bicyclo[3.3.0]octadienediones], are shown to exhibit charge-transfer absorptions and emissions, mainly on the basis of solvent effects on emissions. The electronic excitation originates mainly in a "non-bonding" p-orbital substantially localized on N, and oriented parallel to the pi-system, hence n(pi). The label, n(pi)-ct ->pi*, is proposed for these transitions. For the first time, two n(pi)-ct ->pi* transitions for a molecule containing a pair of adjacent nitrogens adjacent to a pi-acceptor system are reported. (c) 2005 Published by Elsevier B.V.

引用

页码：3 / 7

页数：5

共 30 条

[1] Effects of π* ← n excitation in 4-cyclopentene-1,3-dione [J].

Back, RA ;

Robert, D .

JOURNAL OF MOLECULAR SPECTROSCOPY, 2000, 204 (01) :85-93

[2] Theoretical analysis of the excited states in maleimide [J].

Climent, T ;

González-Luque, R ;

Merchán, M .

JOURNAL OF PHYSICAL CHEMISTRY A, 2003, 107 (36) :6995-7003

[3]

FOSTER R, 1974, MOL COMPLEXES, V2, P251

[4] BIMANES .19. CHARACTERISTICS OF THE MOLECULAR-STRUCTURES OF 1,5-DIAZABICYCLO[3.3.0]OCTADIENEDIONES (9,10-DIOXABIMANES) DETERMINED BY X-RAY CRYSTALLOGRAPHY [J].

GOLDBERG, I ;

BERNSTEIN, J ;

KOSOWER, EM ;

GOLDSTEIN, E ;

PAZHENCHEVSKY, B .

JOURNAL OF HETEROCYCLIC CHEMISTRY, 1983, 20 (04) :903-912

[5] Unexpected photophysical properties of symmetric indolylmaleimide derivatives [J].

Kaletas, BK ;

Mandl, C ;

van der Zwan, G ;

Fanti, M ;

Zerbetto, F ;

De Cola, L ;

König, B ;

Williams, RM .

JOURNAL OF PHYSICAL CHEMISTRY A, 2005, 109 (29) :6440-6449

[6] CHARACTERIZATION OF ELECTRONIC TRANSITIONS IN COMPLEX MOLECULES [J].

KASHA, M .

DISCUSSIONS OF THE FARADAY SOCIETY, 1950, (09) :14-19

[7] The art of discovery in biophysical organic chemistry [J].

Kosower, EM .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 2005, 83 (09) :1207-1211

[8] THE EFFECT OF SOLVENT ON SPECTRA .4. PYRIDINIUM CYCLOPENTADIENYLIDE [J].

KOSOWER, EM ;

RAMSEY, BG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1959, 81 (04) :856-860

[9] BIMANES .22. FLEXIBLE FLUORESCENT MOLECULES - SOLVENT EFFECTS ON THE PHOTOPHYSICAL PROPERTIES OF SYN-BIMANES (1,5-DIAZABICYCLO[3.3.0]OCTA-3,6-DIENE-2,8-DIONES) [J].

KOSOWER, EM ;

GINIGER, R ;

RADKOWSKY, A ;

HEBEL, D ;

SHUSTERMAN, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (22) :5552-5557

[10] INTRA-MOLECULAR DONOR-ACCEPTOR SYSTEMS .3. 3RD TYPE OF EMITTING SINGLET-STATE FOR N-ALKYL-6-N-ARYLAMINO-2-NAPHTHALENESULFONATES - SOLVENT MODULATION OF SUBSTITUENT EFFECTS ON CHARGE-TRANSFER EMISSIONS [J].

KOSOWER, EM ;

DODIUK, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1978, 100 (13) :4173-4179

← 1 2 3 →