Singlet Oxygen Generation by Novel NIR BODIPY Dyes
摘要:
Five novel near-infrared BODIPY dyes were prepared for improved singlet oxygen generation using thiophene and bromine. Theoretical, optical, photostable, and singlet oxygen generation characteristics of these dyes were assessed. Predicted excitation energies by TDDFT calculations were in good agreement (Delta E approximate to 0.06 eV) with experimental data. All five dyes showed both excitation and emission In the NIR range. In particular, two dyes having sulfur and bromine atoms showed efficient singlet oxygen generation with high photostability.
Thieno-Pyrrole-Fused BODIPY Intermediate as a Platform to Multifunctional NIR Agents
作者:Samuel G. Awuah、Sushanta K. Das、Francis D'Souza、Youngjae You
DOI:10.1002/asia.201300855
日期:2013.12
vivo fluorescence imaging of a series of new thieno–pyrrole‐fused near‐infrared (NIR) BODIPY agents by using a versatile intermediate as a building block. The versatile thieno–pyrrole‐fused BODIPY intermediate was rationallydesigned to bear bromo‐substituents and absorb in the mid‐red region (635 nm) to act as an organic electrophile for the development of NIR multifunctional agents. The use of subsequent
BODIPY Derivatives and Methods of Synthesis and Use Thereof
申请人:The Board of Regents of the University of Oklahoma
公开号:US20150158888A1
公开(公告)日:2015-06-11
Derivatives of BODIPY (boron dipyrromethene difluoride) and their synthesis and use are disclosed.
BODIPY(硼二吡咯甲烷二氟化物)衍生物及其合成和用途被披露。
RESIN COMPOSITION AND MOLDED ARTICLE
申请人:DIC CORPORATION
公开号:US20160271273A1
公开(公告)日:2016-09-22
The invention contains a resin and a near infrared fluorescent material which is one type or two or more types of compounds selected from General Formulas (I
1
) to (I
4
) and has a maximum fluorescence wavelength of 650 nm or longer. In Formulas, R
a
and R
b
, R
c
and R
d
, R
h
and R
i
, and R
j
and R
k
form rings together with the nitrogen atom to which R
a
, R
c
, R
h
, and R
j
are bonded; R
e
and R
f
represent a halogen atom or an oxygen atom; each of R
l
, R
m
, R
n
, and R
o
independently represents a halogen atom, a C
1-20
alkyl group, a C
1-20
alkoxy group, an aryl group, or a heteroaryl group; R
g
, R
r
, and R
s
represent a hydrogen atom or an electron withdrawing group; and each of R
p
and R
q
independently represents a hydrogen atom, a halogen atom, a C
1-20
alkyl group, a C
1-20
alkoxy group, an aryl group, or a heteroaryl group.
Dual Functioning Thieno-Pyrrole Fused BODIPY Dyes for NIR Optical Imaging and Photodynamic Therapy: Singlet Oxygen Generation without Heavy Halogen Atom Assistance
作者:Ryan L. Watley、Samuel G. Awuah、Moses Bio、Robert Cantu、Habtom B. Gobeze、Vladimir N. Nesterov、Sushanta K. Das、Francis D'Souza、Youngjae You
DOI:10.1002/asia.201500140
日期:2015.6
We discovered a rare phenomenon wherein a thieno‐pyrrole fused BODIPY dye (SBDPiR690) generates singletoxygen without heavy halogen atom substituents. SBDPiR690 generates both singletoxygen and fluorescence. To our knowledge, this is the first example of such a finding. To establish a structure–photophysical property relationship, we prepared SBDPiR analogs with electron‐withdrawing groups at the
我们发现了一种罕见的现象,其中噻吩并吡咯稠合的BODIPY染料(SBDPiR690)产生单重态氧而没有重的卤素原子取代基。SBDPiR690产生单线态氧和荧光。据我们所知,这是这种发现的第一个例子。为了建立结构与光物理性质的关系,我们制备了在苯基对位带有吸电子基团的SBDPiR类似物。吸电子基团增加了HOMO-LUMO的能隙和单线态氧的产生。在类似物中,CF 3类似物SBDPiR688具有出色的亮度(82290 m -1 cm -1)和光毒性(99170 m -1 cm ) 双重功能。 -1)媲美PC4的,由于高的消光系数(211 000个 米-1 厘米-1)和平衡的衰变(Φ流感= 0.39和Φ Δ = 0.47)。铅化合物SBDPiR690的双重功能已成功应用于临床前光学成像,并用于PDT以有效控制皮下肿瘤。
Thieno-Pyrrole-Fused 4,4-Difluoro-4-bora-3a,4a-diaza-<i>s</i>-indacene–Fullerene Dyads: Utilization of Near-Infrared Sensitizers for Ultrafast Charge Separation in Donor–Acceptor Systems
作者:Venugopal Bandi、Sushanta K. Das、Samuel G. Awuah、Youngjae You、Francis D’Souza
DOI:10.1021/ja503015f
日期:2014.5.28
Donor-acceptordyads featuring near-IR sensitizers derived from thieno-pyrrole-fused BODIPY (abbreviated as SBDPiR) and fullerene, C60 have been newly synthesized and characterized. Occurrence of ultrafastphotoinducedelectrontransfer (PET) leading to the formation of charge-separated state in these dyads, capable of harvestinglight energy from the near-IR region, is established from femtosecond