江汉大学学报(自然科学版)
江漢大學學報(自然科學版)
강한대학학보(자연과학판)
JOURNAL OF JIANGHAN UNIVERSITY(NATURAL SCIENCES)
2014年
2期
49-60
,共12页
喻艳华%付成%文丹%贺贤然
喻豔華%付成%文丹%賀賢然
유염화%부성%문단%하현연
分子荧光%络合作用%离子识别%逻辑门%键盘锁
分子熒光%絡閤作用%離子識彆%邏輯門%鍵盤鎖
분자형광%락합작용%리자식별%라집문%건반쇄
fluorescence%complexation%ion recognition%logic gate%keypad lock
合成了基于二氰基亚甲基-四氢吡喃和苯并噻二唑的新型荧光化合物,并研究了该化合物通过改变二价铜离子和氟离子/溴离子滴加顺序对应的分子荧光现象。研究发现先加入二价铜离子导致该化合物的最大发射波长“蓝移”,继续滴加氟离子导致荧光淬灭,若继续滴加的是溴离子则荧光不变;反之先加入氟离子,该化合物荧光强度微弱降低,继续滴加铜离子对荧光强度影响不大,若滴加溴离子,该化合物荧光不变,继续滴加铜离子,最大发射波长强度降低,并且在485nm处出现新的荧光;这些荧光变化的机制也得到研究与证实。分子逻辑门是在分子水平上的逻辑操作来描述逻辑门,输入和输出信号。通过改变离子性质(加入氟离子或溴离子)、滴加顺序、激发波长获得不同的荧光发射波长和荧光强度,模拟了EnYES、EnNOT、EnIMP、EnINH、EnNAND逻辑门,1∶2信号分离器和键盘锁。
閤成瞭基于二氰基亞甲基-四氫吡喃和苯併噻二唑的新型熒光化閤物,併研究瞭該化閤物通過改變二價銅離子和氟離子/溴離子滴加順序對應的分子熒光現象。研究髮現先加入二價銅離子導緻該化閤物的最大髮射波長“藍移”,繼續滴加氟離子導緻熒光淬滅,若繼續滴加的是溴離子則熒光不變;反之先加入氟離子,該化閤物熒光彊度微弱降低,繼續滴加銅離子對熒光彊度影響不大,若滴加溴離子,該化閤物熒光不變,繼續滴加銅離子,最大髮射波長彊度降低,併且在485nm處齣現新的熒光;這些熒光變化的機製也得到研究與證實。分子邏輯門是在分子水平上的邏輯操作來描述邏輯門,輸入和輸齣信號。通過改變離子性質(加入氟離子或溴離子)、滴加順序、激髮波長穫得不同的熒光髮射波長和熒光彊度,模擬瞭EnYES、EnNOT、EnIMP、EnINH、EnNAND邏輯門,1∶2信號分離器和鍵盤鎖。
합성료기우이청기아갑기-사경필남화분병새이서적신형형광화합물,병연구료해화합물통과개변이개동리자화불리자/추리자적가순서대응적분자형광현상。연구발현선가입이개동리자도치해화합물적최대발사파장“람이”,계속적가불리자도치형광쉬멸,약계속적가적시추리자칙형광불변;반지선가입불리자,해화합물형광강도미약강저,계속적가동리자대형광강도영향불대,약적가추리자,해화합물형광불변,계속적가동리자,최대발사파장강도강저,병차재485nm처출현신적형광;저사형광변화적궤제야득도연구여증실。분자라집문시재분자수평상적라집조작래묘술라집문,수입화수출신호。통과개변리자성질(가입불리자혹추리자)、적가순서、격발파장획득불동적형광발사파장화형광강도,모의료EnYES、EnNOT、EnIMP、EnINH、EnNAND라집문,1∶2신호분리기화건반쇄。
Novel fluorescent compounds based on dicyanomethylene-4H-pyran and benzothiadia-zole scaffolds,responding to combinations of Cu2+,F- and/or Br- in a sequence dependent manner were synthesized and their recognition properties were investigated. Addition of Cu2+immediately re-sulted in the"blue shift",introduction of Br-after Cu2+has no detectable influence compared to Cu2+ion alone,whereas F-leads to complete quenching of fluorescence;In contrast,addition of F-before Cu2+induced only a slight reduction of fluorescence intensity at ca. 608 nm,while addition of Cu2+af-ter Br-leads to partial quenching at 608 nm with concomitant partial appearance of fluorescence emission around 485 nm. The mechanism was studied and confirmed. A logic gate is an idealized or physical device implementing a Boolean function,that is,it performs a logical operation on one or more logical inputs,and produces a single logical output. These structurally simple molecules can mimic the functionnalities of various complex logic gate such as EnYES,EnNOT,EnIMP,EnINH, EnNAND arrays by selection of inputs(nature of ions,sequence of additions and excitation wave-length)and outputs(fluorescence reading wavelength and threshold),1∶2 demultiplexer and key-board.